331 files changed, 11630 insertions, 0 deletions
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-1-1.js b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-1-1.js
new file mode 100644
index 000000000..551c80478
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-1-1.js
@@ -0,0 +1,24 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * PutValue operates only on references (see step 1)
+ *
+ * @path ch11/11.13/11.13.1/11.13.1-1-1.js
+ * @description simple assignment throws ReferenceError if LeftHandSide is not a reference (number)
+ */
+
+
+function testcase() {
+  try {
+    eval("42 = 42");
+  }
+  catch (e) {
+    if (e instanceof ReferenceError) {
+      return true;
+    }
+  }
+ }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-1-2.js b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-1-2.js
new file mode 100644
index 000000000..5abde0d6d
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-1-2.js
@@ -0,0 +1,24 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * PutValue operates only on references (see step 1).
+ *
+ * @path ch11/11.13/11.13.1/11.13.1-1-2.js
+ * @description simple assignment throws ReferenceError if LeftHandSide is not a reference (string)
+ */
+
+
+function testcase() {
+  try {
+    eval("'x' = 42");
+  }
+  catch (e) {
+    if (e instanceof ReferenceError) {
+      return true;
+    }
+  }
+ }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-1-3.js b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-1-3.js
new file mode 100644
index 000000000..1dbeb18c3
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-1-3.js
@@ -0,0 +1,24 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * PutValue operates only on references (see step 1).
+ *
+ * @path ch11/11.13/11.13.1/11.13.1-1-3.js
+ * @description simple assignment throws ReferenceError if LeftHandSide is not a reference (boolean)
+ */
+
+
+function testcase() {
+  try {
+    eval("true = 42");
+  }
+  catch (e) {
+    if (e instanceof ReferenceError) {
+      return true;
+    }
+  }
+ }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-1-4.js b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-1-4.js
new file mode 100644
index 000000000..dbbfb619b
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-1-4.js
@@ -0,0 +1,24 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * PutValue operates only on references (see step 1).
+ *
+ * @path ch11/11.13/11.13.1/11.13.1-1-4.js
+ * @description simple assignment throws ReferenceError if LeftHandSide is not a reference (null)
+ */
+
+
+function testcase() {
+  try {
+    eval("null = 42");
+  }
+  catch (e) {
+    if (e instanceof ReferenceError) {
+      return true;
+    }
+  }
+ }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-1-6-s.js b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-1-6-s.js
new file mode 100644
index 000000000..915caf590
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-1-6-s.js
@@ -0,0 +1,26 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * PutValue operates only on references (see step 3.a).
+ *
+ * @path ch11/11.13/11.13.1/11.13.1-1-6-s.js
+ * @description simple assignment throws ReferenceError if LeftHandSide is an unresolvable reference in strict mode (base obj undefined)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+  'use strict';
+  
+  try {
+    __ES3_1_test_suite_test_11_13_1_unique_id_0__.x = 42;
+    return false;
+  }
+  catch (e) {
+    return (e instanceof ReferenceError);
+  }
+ }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-1-s.js b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-1-s.js
new file mode 100644
index 000000000..5330f5411
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-1-s.js
@@ -0,0 +1,30 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.1/11.13.1-1-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide is a reference to a data property with the attribute value {[[Writable]]:false} under strict mode
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.defineProperty(obj, "prop", {
+            value: 10,
+            writable: false,
+            enumerable: true,
+            configurable: true
+        });
+
+        try {
+            obj.prop = 20;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError && obj.prop === 10;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-2-s.js b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-2-s.js
new file mode 100644
index 000000000..f16e19d18
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-2-s.js
@@ -0,0 +1,32 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.1/11.13.1-2-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide is a reference to an accessor property with the attribute value {[[Set]]:undefined} under strict mode
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.defineProperty(obj, "prop", {
+            get: function () {
+                return 11;
+            },
+            set: undefined,
+            enumerable: true,
+            configurable: true
+        });
+
+        try {
+            obj.prop = 20;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError && obj.prop === 11;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-3-s.js b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-3-s.js
new file mode 100644
index 000000000..79d23670e
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-3-s.js
@@ -0,0 +1,25 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.1/11.13.1-3-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide is a reference to a non-existent property of an object whose [[Extensible]] internal property has the value false under strict mode
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.preventExtensions(obj);
+
+        try {
+            obj.len = 10;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-1.js b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-1.js
new file mode 100644
index 000000000..04e93c38d
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-1.js
@@ -0,0 +1,29 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * PutValue operates only on references (see step 3.b).
+ *
+ * @path ch11/11.13/11.13.1/11.13.1-4-1.js
+ * @description simple assignment creates property on the global object if LeftHandSide is an unresolvable reference
+ */
+
+
+function testcase() {
+  function foo() {
+    __ES3_1_test_suite_test_11_13_1_unique_id_3__ = 42;
+  }
+  foo();
+
+  var desc = Object.getOwnPropertyDescriptor(fnGlobalObject(), '__ES3_1_test_suite_test_11_13_1_unique_id_3__');
+  if (desc.value === 42 &&
+      desc.writable === true &&
+      desc.enumerable === true &&
+      desc.configurable === true) {
+    delete __ES3_1_test_suite_test_11_13_1_unique_id_3__;
+    return true;
+  }  
+ }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-14-s.js b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-14-s.js
new file mode 100644
index 000000000..e82720d70
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-14-s.js
@@ -0,0 +1,24 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.1/11.13.1-4-14-s.js
+ * @description simple assignment throws TypeError if LeftHandSide is a readonly property in strict mode (Number.MAX_VALUE)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+  'use strict';
+
+  try {
+    Number.MAX_VALUE = 42;
+    return false;
+  }
+  catch (e) {
+    return (e instanceof TypeError);
+  }
+ }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-27-s.js b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-27-s.js
new file mode 100644
index 000000000..00da46eda
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-27-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.1/11.13.1-4-27-s.js
+ * @description simple assignment throws TypeError if LeftHandSide is a readonly property in strict mode (Global.undefined)
+ */
+
+
+function testcase() {
+    'use strict';
+
+    try {
+      fnGlobalObject().undefined = 42;
+      return false;
+    }
+    catch (e) {
+      return (e instanceof TypeError);
+    }
+ }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-28-s.js b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-28-s.js
new file mode 100644
index 000000000..039991a37
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-28-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.1/11.13.1-4-28-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier 'eval' appears as the LeftHandSideExpression of simple assignment(=) under strict mode
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var blah = eval;
+        try {
+            eval("var eval = 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === eval;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-28gs.js b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-28gs.js
new file mode 100644
index 000000000..86867f1ba
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-28gs.js
@@ -0,0 +1,14 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.1/11.13.1-4-28gs.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier 'Math.PI' appears as the LeftHandSideExpression of simple assignment(=)
+ * @onlyStrict
+ * @negative NotEarlyError
+ */
+"use strict";
+throw NotEarlyError;
+Math.PI = 20;
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-29-s.js b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-29-s.js
new file mode 100644
index 000000000..c9a5a404c
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-29-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.1/11.13.1-4-29-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier 'arguments' appears as the LeftHandSideExpression of simple assignment(=) under strict mode
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var blah = arguments;
+        try {
+            eval("var arguments = 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === arguments;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-29gs.js b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-29gs.js
new file mode 100644
index 000000000..86e4f59ce
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-29gs.js
@@ -0,0 +1,13 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.1/11.13.1-4-29gs.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier 'Math.PI' appears as the LeftHandSideExpression of simple assignment(=)
+ * @onlyStrict
+ * @negative .
+ */
+"use strict";
+Math.PI = 20;
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-3-s.js b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-3-s.js
new file mode 100644
index 000000000..ff4d1710d
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-3-s.js
@@ -0,0 +1,24 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.1/11.13.1-4-3-s.js
+ * @description simple assignment throws TypeError if LeftHandSide is a readonly property in strict mode (Global.Infinity)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+    'use strict';
+
+    try {
+      fnGlobalObject().Infinity = 42;
+      return false;
+    }
+    catch (e) {
+      return (e instanceof TypeError);
+    }
+ }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-30-s.js b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-30-s.js
new file mode 100644
index 000000000..e494fab1b
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-30-s.js
@@ -0,0 +1,24 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.1/11.13.1-4-30-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier 'eval' appears as the LeftHandSideExpression (PrimaryExpression) of simple assignment(=) under strict mode
+ * @onlyStrict
+ */
+
+
+
+function testcase() {
+        "use strict";
+        var blah = eval;
+        try {
+            eval("(eval) = 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === eval;
+        }
+}
+runTestCase(testcase);
+\ No newline at end of file
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-31-s.js b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-31-s.js
new file mode 100644
index 000000000..1d70a7723
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-31-s.js
@@ -0,0 +1,24 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.1/11.13.1-4-31-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier 'arguments' appears as the LeftHandSideExpression (PrimaryExpression) of simple assignment(=) under strict mode
+ * @onlyStrict
+ */
+
+
+
+function testcase() {
+        "use strict";
+        var blah = arguments;
+        try {
+            eval("(arguments) = 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === arguments;
+        }
+}
+runTestCase(testcase);
+\ No newline at end of file
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-6-s.js b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-6-s.js
new file mode 100644
index 000000000..158152924
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/11.13.1-4-6-s.js
@@ -0,0 +1,24 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.1/11.13.1-4-6-s.js
+ * @description simple assignment throws TypeError if LeftHandSide is a readonly property in strict mode (Function.length)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+  'use strict';
+  
+  try {
+    Function.length = 42;
+    return false;
+  }
+  catch (e) {
+    return (e instanceof TypeError);
+  }
+ }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A1.js b/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A1.js
new file mode 100644
index 000000000..533091b57
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A1.js
@@ -0,0 +1,62 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * White Space and Line Terminator between LeftHandSideExpression and "=" or between "=" and AssignmentExpression are allowed
+ *
+ * @path ch11/11.13/11.13.1/S11.13.1_A1.js
+ * @description Checking by using eval
+ * @noStrict
+ */
+
+//CHECK#1
+if ((eval("x\u0009=\u0009true")) !== true) {
+  $ERROR('#1: (x\\u0009=\\u0009true) === true');
+}
+
+//CHECK#2
+if ((eval("x\u000B=\u000Btrue")) !== true) {
+  $ERROR('#2: (x\\u000B=\\u000Btrue) === true');
+}
+
+//CHECK#3
+if ((eval("x\u000C=\u000Ctrue")) !== true) {
+  $ERROR('#3: (x\\u000C=\\u000Ctrue) === true');
+}
+
+//CHECK#4
+if ((eval("x\u0020=\u0020true")) !== true) {
+  $ERROR('#4: (x\\u0020=\\u0020true) === true');
+}
+
+//CHECK#5
+if ((eval("x\u00A0=\u00A0true")) !== true) {
+  $ERROR('#5: (x\\u00A0=\\u00A0true) === true');
+}
+
+//CHECK#6
+if ((eval("x\u000A=\u000Atrue")) !== true) {
+  $ERROR('#6: (x\\u000A=\\u000Atrue) === true');
+}
+
+//CHECK#7
+if ((eval("x\u000D=\u000Dtrue")) !== true) {
+  $ERROR('#7: (x\\u000D=\\u000Dtrue) === true');
+}
+
+//CHECK#8
+if ((eval("x\u2028=\u2028true")) !== true) {
+  $ERROR('#8: (x\\u2028=\\u2028true) === true');
+}
+
+//CHECK#9
+if ((eval("x\u2029=\u2029true")) !== true) {
+  $ERROR('#9: (x\\u2029=\\u2029true) === true');
+}
+
+
+//CHECK#10
+if ((eval("x\u0009\u000B\u000C\u0020\u00A0\u000A\u000D\u2028\u2029=\u0009\u000B\u000C\u0020\u00A0\u000A\u000D\u2028\u2029true")) !== true) {
+  $ERROR('#10: (x\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u2029=\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u2029true) === true');
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A2.1_T1.js b/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A2.1_T1.js
new file mode 100644
index 000000000..3c3a793ed
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A2.1_T1.js
@@ -0,0 +1,50 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x = y uses GetValue and PutValue
+ *
+ * @path ch11/11.13/11.13.1/S11.13.1_A2.1_T1.js
+ * @description Either AssigmentExpression is not Reference or GetBase is not null
+ */
+
+//CHECK#1
+x = 1;
+if (x !== 1) {
+  $ERROR('#1: x = 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+var x = 1;
+if (x !== 1) {
+  $ERROR('#2: var x = 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+y = 1;
+x = y;
+if (x !== 1) {
+  $ERROR('#3: y = 1; x = y; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+var y = 1;
+var x = y;
+if (x !== 1) {
+  $ERROR('#4: var y = 1; var x = y; x === 1. Actual: ' + (x));
+}
+
+//CHECK#5
+var objectx = new Object();
+var objecty = new Object();
+objecty.prop = 1.1;
+objectx.prop = objecty.prop;
+if (objectx.prop !== objecty.prop) {
+  $ERROR('#5: var objectx = new Object(); var objecty = new Object(); objecty.prop = 1; objectx.prop = objecty.prop; objectx.prop === objecty.prop. Actual: ' + (objectx.prop));
+} else {
+  if (objectx === objecty) {
+    $ERROR('#5: var objectx = new Object(); var objecty = new Object(); objecty.prop = 1; objectx.prop = objecty.prop; objectx !== objecty');
+  } 
+}
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A2.1_T2.js b/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A2.1_T2.js
new file mode 100644
index 000000000..7f48afc64
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A2.1_T2.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x = y uses GetValue and PutValue
+ *
+ * @path ch11/11.13/11.13.1/S11.13.1_A2.1_T2.js
+ * @description If GetBase(AssigmentExpression) is null, throw ReferenceError
+ */
+
+//CHECK#1
+try {
+  x = y;
+  $ERROR('#1.1: x = y throw ReferenceError. Actual: ' + (x = y));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: x = y throw ReferenceError. Actual: ' + (e));  
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A2.1_T3.js b/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A2.1_T3.js
new file mode 100644
index 000000000..3e153946f
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A2.1_T3.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x = y uses GetValue and PutValue
+ *
+ * @path ch11/11.13/11.13.1/S11.13.1_A2.1_T3.js
+ * @description If Type(LeftHandSideExpression) is not Reference, throw ReferenceError (or SyntaxError)
+ * @negative
+ */
+
+//CHECK#1
+try {
+  1 = 1;
+  $ERROR('#1.1: 1 = 1 throw ReferenceError (or SyntaxError). Actual: ' + (1 = 1));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: 1 = 1 throw ReferenceError (or SyntaxError). Actual: ' + (e));  
+  } else {
+    1 = 1;
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A3.1.js b/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A3.1.js
new file mode 100644
index 000000000..d02876814
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A3.1.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x = y PutValue(x, y)
+ *
+ * @path ch11/11.13/11.13.1/S11.13.1_A3.1.js
+ * @description Checking Expression and Variable statements
+ */
+
+//CHECK#1
+var x = 1;
+if (x !== 1) {
+  $ERROR('#1: var x = 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+y = 1;
+if (y !== 1) {
+  $ERROR('#2: y = 1; y === 1. Actual: ' + (y));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A3.2.js b/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A3.2.js
new file mode 100644
index 000000000..f369e21c3
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A3.2.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x = y returns GetValue(y)
+ *
+ * @path ch11/11.13/11.13.1/S11.13.1_A3.2.js
+ * @description Checking Expression and Variable statements
+ */
+
+//CHECK#1
+var x = 0;
+if ((x = 1) !== 1) {
+  $ERROR('#1: var x = 0; (x = 1) === 1. Actual: ' + ((x = 1)));
+}
+
+//CHECK#2
+x = 0;
+if ((x = 1) !== 1) {
+  $ERROR('#2: x = 0; (x = 1) === 1. Actual: ' + ((x = 1)));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A4_T1.js b/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A4_T1.js
new file mode 100644
index 000000000..5781fbdfc
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A4_T1.js
@@ -0,0 +1,18 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * AssignmentExpression : LeftHandSideExpression = AssignmentExpression
+ *
+ * @path ch11/11.13/11.13.1/S11.13.1_A4_T1.js
+ * @description Syntax check
+ */
+
+//CHECK#1
+x = x = 1;
+if (x !== 1) {
+  $ERROR('#1: The expression x = x = 1 is the same x = (x = 1), not (x = x) = 1. Actual: ' + (x));
+}
+
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A4_T2.js b/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A4_T2.js
new file mode 100644
index 000000000..d1d4ea456
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/S11.13.1_A4_T2.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * AssignmentExpression : LeftHandSideExpression = AssignmentExpression
+ *
+ * @path ch11/11.13/11.13.1/S11.13.1_A4_T2.js
+ * @description Syntax check if "x = x" throws ReferenceError
+ */
+
+//CHECK#1
+try {
+  x = x;
+  $ERROR('#1.1: x = x throw ReferenceError. Actual: ' + (x = x));
+} catch(e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: x = x throw ReferenceError. Actual: ' + (e));  
+  }
+}
+
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/browser.js b/js/src/tests/test262/ch11/11.13/11.13.1/browser.js
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/browser.js
diff --git a/js/src/tests/test262/ch11/11.13/11.13.1/shell.js b/js/src/tests/test262/ch11/11.13/11.13.1/shell.js
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.1/shell.js
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-1-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-1-s.js
new file mode 100644
index 000000000..3a8522a32
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-1-s.js
@@ -0,0 +1,22 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-1-s.js
+ * @description Strict Mode - ReferenceError is thrown if the LeftHandSideExpression of a Compound Assignment operator(*=) evaluates to an unresolvable reference
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        try {
+            eval("_11_13_2_1 *= 1;");
+            return false;
+        } catch (e) {
+            return e instanceof ReferenceError;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-10-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-10-s.js
new file mode 100644
index 000000000..e0c7dddb4
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-10-s.js
@@ -0,0 +1,22 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-10-s.js
+ * @description Strict Mode - ReferenceError is thrown if the LeftHandSideExpression of a Compound Assignment operator(^=) evaluates to an unresolvable reference
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        try {
+            eval("_11_13_2_10 ^= 1;");
+            return false;
+        } catch (e) {
+            return e instanceof ReferenceError;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-11-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-11-s.js
new file mode 100644
index 000000000..60d2e8a63
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-11-s.js
@@ -0,0 +1,22 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-11-s.js
+ * @description Strict Mode - ReferenceError is thrown if the LeftHandSideExpression of a Compound Assignment operator(|=) evaluates to an unresolvable reference
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        try {
+            eval("_11_13_2_11 |= 1;");
+            return false;
+        } catch (e) {
+            return e instanceof ReferenceError;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-12-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-12-s.js
new file mode 100644
index 000000000..ae0eff54b
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-12-s.js
@@ -0,0 +1,19 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-12-s.js
+ * @description Strict Mode - ReferenceError isn't thrown if the LeftHandSideExpression of a Compound Assignment operator(*=) evaluates to a resolvable reference
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var _11_13_2_12 = 5
+        _11_13_2_12 *= 2;
+        return _11_13_2_12 === 10;
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-13-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-13-s.js
new file mode 100644
index 000000000..3dc5a0f34
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-13-s.js
@@ -0,0 +1,19 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-13-s.js
+ * @description Strict Mode - ReferenceError isn't thrown if the LeftHandSideExpression of a Compound Assignment operator(/=) evaluates to a resolvable reference
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var _11_13_2_13 = 6
+        _11_13_2_13 /= 2;
+        return _11_13_2_13 === 3;
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-14-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-14-s.js
new file mode 100644
index 000000000..578fae60e
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-14-s.js
@@ -0,0 +1,19 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-14-s.js
+ * @description Strict Mode - ReferenceError isn't thrown if the LeftHandSideExpression of a Compound Assignment operator(%=) evaluates to a resolvable reference
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var _11_13_2_14 = 5
+        _11_13_2_14 %= 2;
+        return _11_13_2_14 === 1;
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-15-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-15-s.js
new file mode 100644
index 000000000..832e1f98d
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-15-s.js
@@ -0,0 +1,19 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-15-s.js
+ * @description Strict Mode - ReferenceError isn't thrown if the LeftHandSideExpression of a Compound Assignment operator(>>>=) evaluates to a resolvable reference
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var _11_13_2_15 = 8
+        _11_13_2_15 >>>= 2;
+        return _11_13_2_15 === 2;
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-16-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-16-s.js
new file mode 100644
index 000000000..ae83bb032
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-16-s.js
@@ -0,0 +1,19 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-16-s.js
+ * @description Strict Mode - ReferenceError isn't thrown if the LeftHandSideExpression of a Compound Assignment operator(-=) evaluates to a resolvable reference
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var _11_13_2_16 = 5
+        _11_13_2_16 -= 2;
+        return _11_13_2_16 === 3;
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-17-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-17-s.js
new file mode 100644
index 000000000..f78dd1b8b
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-17-s.js
@@ -0,0 +1,19 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-17-s.js
+ * @description Strict Mode - ReferenceError isn't thrown if the LeftHandSideExpression of a Compound Assignment operator(<<=) evaluates to a resolvable reference
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var _11_13_2_17 = 1;
+        _11_13_2_17 <<= 2;
+        return _11_13_2_17 === 4;
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-18-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-18-s.js
new file mode 100644
index 000000000..cb2af550d
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-18-s.js
@@ -0,0 +1,19 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-18-s.js
+ * @description Strict Mode - ReferenceError isn't thrown if the LeftHandSideExpression of a Compound Assignment operator(>>=) evaluates to a resolvable reference
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var _11_13_2_18 = 4
+        _11_13_2_18 >>= 2;
+        return _11_13_2_18 === 1;
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-19-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-19-s.js
new file mode 100644
index 000000000..187d7c78a
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-19-s.js
@@ -0,0 +1,19 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-19-s.js
+ * @description Strict Mode - ReferenceError isn't thrown if the LeftHandSideExpression of a Compound Assignment operator(+=) evaluates to a resolvable reference
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var _11_13_2_19 = -1
+        _11_13_2_19 += 10;
+        return _11_13_2_19 === 9;
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-2-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-2-s.js
new file mode 100644
index 000000000..395bed37d
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-2-s.js
@@ -0,0 +1,22 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-2-s.js
+ * @description Strict Mode - ReferenceError is thrown if the LeftHandSideExpression of a Compound Assignment operator(/=) evaluates to an unresolvable reference
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        try {
+            eval("_11_13_2_2 /= 1;");
+            return false;
+        } catch (e) {
+            return e instanceof ReferenceError;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-20-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-20-s.js
new file mode 100644
index 000000000..8f1547ca7
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-20-s.js
@@ -0,0 +1,19 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-20-s.js
+ * @description Strict Mode - ReferenceError isn't thrown if the LeftHandSideExpression of a Compound Assignment operator(&=) evaluates to a resolvable reference
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var _11_13_2_20 = 5
+        _11_13_2_20 &= 3;
+        return _11_13_2_20 === 1;
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-21-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-21-s.js
new file mode 100644
index 000000000..3cf11ab55
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-21-s.js
@@ -0,0 +1,19 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-21-s.js
+ * @description Strict Mode - ReferenceError isn't thrown if the LeftHandSideExpression of a Compound Assignment operator(^=) evaluates to a resolvable reference
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var _11_13_2_21 = 5
+        _11_13_2_21 ^= 3;
+        return _11_13_2_21 === 6;
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-22-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-22-s.js
new file mode 100644
index 000000000..b525c1621
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-22-s.js
@@ -0,0 +1,19 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-22-s.js
+ * @description Strict Mode - ReferenceError isn't thrown if the LeftHandSideExpression of a Compound Assignment operator(|=) evaluates to a resolvable reference
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var _11_13_2_22 = 5
+        _11_13_2_22 |= 2;
+        return _11_13_2_22 === 7;
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-23-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-23-s.js
new file mode 100644
index 000000000..f6b492dc3
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-23-s.js
@@ -0,0 +1,30 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-23-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(*=) is a reference to a data property with the attribute value {[[Writable]]:false}
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.defineProperty(obj, "prop", {
+            value: 10,
+            writable: false,
+            enumerable: true,
+            configurable: true
+        });
+
+        try {
+            obj.prop *= 20;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError && obj.prop === 10;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-24-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-24-s.js
new file mode 100644
index 000000000..7c0886277
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-24-s.js
@@ -0,0 +1,30 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-24-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(/=) is a reference to a data property with the attribute value {[[Writable]]:false}
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.defineProperty(obj, "prop", {
+            value: 10,
+            writable: false,
+            enumerable: true,
+            configurable: true
+        });
+
+        try {
+            obj.prop /= 20;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError && obj.prop === 10;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-25-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-25-s.js
new file mode 100644
index 000000000..3f52583c3
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-25-s.js
@@ -0,0 +1,30 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-25-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(%=) is a reference to a data property with the attribute value {[[Writable]]:false}
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.defineProperty(obj, "prop", {
+            value: 10,
+            writable: false,
+            enumerable: true,
+            configurable: true
+        });
+
+        try {
+            obj.prop %= 20;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError && obj.prop === 10;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-26-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-26-s.js
new file mode 100644
index 000000000..a13b710d8
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-26-s.js
@@ -0,0 +1,30 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-26-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(+=) is a reference to a data property with the attribute value {[[Writable]]:false}
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.defineProperty(obj, "prop", {
+            value: 10,
+            writable: false,
+            enumerable: true,
+            configurable: true
+        });
+
+        try {
+            obj.prop += 20;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError && obj.prop === 10;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-27-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-27-s.js
new file mode 100644
index 000000000..c8b649257
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-27-s.js
@@ -0,0 +1,30 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-27-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(-=) is a reference to a data property with the attribute value {[[Writable]]:false}
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.defineProperty(obj, "prop", {
+            value: 10,
+            writable: false,
+            enumerable: true,
+            configurable: true
+        });
+
+        try {
+            obj.prop -= 20;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError && obj.prop === 10;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-28-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-28-s.js
new file mode 100644
index 000000000..326c710e1
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-28-s.js
@@ -0,0 +1,30 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-28-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(<<=) is a reference to a data property with the attribute value {[[Writable]]:false}
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.defineProperty(obj, "prop", {
+            value: 10,
+            writable: false,
+            enumerable: true,
+            configurable: true
+        });
+
+        try {
+            obj.prop <<= 20;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError && obj.prop === 10;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-29-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-29-s.js
new file mode 100644
index 000000000..dac5aff74
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-29-s.js
@@ -0,0 +1,30 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-29-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(>>=) is a reference to a data property with the attribute value {[[Writable]]:false}
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.defineProperty(obj, "prop", {
+            value: 10,
+            writable: false,
+            enumerable: true,
+            configurable: true
+        });
+
+        try {
+            obj.prop >>= 20;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError && obj.prop === 10;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-3-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-3-s.js
new file mode 100644
index 000000000..efbbe64ab
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-3-s.js
@@ -0,0 +1,22 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-3-s.js
+ * @description Strict Mode - ReferenceError is thrown if the LeftHandSideExpression of a Compound Assignment operator(%=) evaluates to an unresolvable reference
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        try {
+            eval("_11_13_2_3 %= 1;");
+            return false;
+        } catch (e) {
+            return e instanceof ReferenceError;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-30-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-30-s.js
new file mode 100644
index 000000000..77b4a3f99
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-30-s.js
@@ -0,0 +1,30 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-30-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(>>>=) is a reference to a data property with the attribute value {[[Writable]]:false}
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.defineProperty(obj, "prop", {
+            value: 10,
+            writable: false,
+            enumerable: true,
+            configurable: true
+        });
+
+        try {
+            obj.prop >>>= 20;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError && obj.prop === 10;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-31-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-31-s.js
new file mode 100644
index 000000000..1a42e5ac1
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-31-s.js
@@ -0,0 +1,30 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-31-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(&=) is a reference to a data property with the attribute value {[[Writable]]:false}
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.defineProperty(obj, "prop", {
+            value: 10,
+            writable: false,
+            enumerable: true,
+            configurable: true
+        });
+
+        try {
+            obj.prop &= 20;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError && obj.prop === 10;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-32-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-32-s.js
new file mode 100644
index 000000000..63ed6d804
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-32-s.js
@@ -0,0 +1,30 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-32-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(^=) is a reference to a data property with the attribute value {[[Writable]]:false}
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.defineProperty(obj, "prop", {
+            value: 10,
+            writable: false,
+            enumerable: true,
+            configurable: true
+        });
+
+        try {
+            obj.prop ^= 20;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError && obj.prop === 10;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-33-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-33-s.js
new file mode 100644
index 000000000..a0b27a8f3
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-33-s.js
@@ -0,0 +1,30 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-33-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(|=) is a reference to a data property with the attribute value {[[Writable]]:false}
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.defineProperty(obj, "prop", {
+            value: 10,
+            writable: false,
+            enumerable: true,
+            configurable: true
+        });
+
+        try {
+            obj.prop |= 20;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError && obj.prop === 10;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-34-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-34-s.js
new file mode 100644
index 000000000..196038b2b
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-34-s.js
@@ -0,0 +1,32 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-34-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(*=) is a reference to an accessor property with the attribute value {[[Set]]:undefined}
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.defineProperty(obj, "prop", {
+            get: function () {
+                return 11;
+            },
+            set: undefined,
+            enumerable: true,
+            configurable: true
+        });
+
+        try {
+            obj.prop *= 20;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError && obj.prop === 11;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-35-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-35-s.js
new file mode 100644
index 000000000..2a7dba157
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-35-s.js
@@ -0,0 +1,32 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-35-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(/=) is a reference to an accessor property with the attribute value {[[Set]]:undefined}
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.defineProperty(obj, "prop", {
+            get: function () {
+                return 11;
+            },
+            set: undefined,
+            enumerable: true,
+            configurable: true
+        });
+
+        try {
+            obj.prop /= 20;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError && obj.prop === 11;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-36-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-36-s.js
new file mode 100644
index 000000000..2e1204180
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-36-s.js
@@ -0,0 +1,32 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-36-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(%=) is a reference to an accessor property with the attribute value {[[Set]]:undefined}
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.defineProperty(obj, "prop", {
+            get: function () {
+                return 11;
+            },
+            set: undefined,
+            enumerable: true,
+            configurable: true
+        });
+
+        try {
+            obj.prop %= 20;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError && obj.prop === 11;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-37-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-37-s.js
new file mode 100644
index 000000000..e426178ab
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-37-s.js
@@ -0,0 +1,32 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-37-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(+=) is a reference to an accessor property with the attribute value {[[Set]]:undefined}
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.defineProperty(obj, "prop", {
+            get: function () {
+                return 11;
+            },
+            set: undefined,
+            enumerable: true,
+            configurable: true
+        });
+
+        try {
+            obj.prop += 20;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError && obj.prop === 11;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-38-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-38-s.js
new file mode 100644
index 000000000..a522f871e
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-38-s.js
@@ -0,0 +1,32 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-38-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(-=) is a reference to an accessor property with the attribute value {[[Set]]:undefined}
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.defineProperty(obj, "prop", {
+            get: function () {
+                return 11;
+            },
+            set: undefined,
+            enumerable: true,
+            configurable: true
+        });
+
+        try {
+            obj.prop -= 20;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError && obj.prop === 11;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-39-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-39-s.js
new file mode 100644
index 000000000..a682e1466
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-39-s.js
@@ -0,0 +1,32 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-39-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(<<=) is a reference to an accessor property with the attribute value {[[Set]]:undefined}
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.defineProperty(obj, "prop", {
+            get: function () {
+                return 11;
+            },
+            set: undefined,
+            enumerable: true,
+            configurable: true
+        });
+
+        try {
+            obj.prop <<= 20;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError && obj.prop === 11;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-4-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-4-s.js
new file mode 100644
index 000000000..e565ceccc
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-4-s.js
@@ -0,0 +1,22 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-4-s.js
+ * @description Strict Mode - ReferenceError is thrown if the LeftHandSideExpression of a Compound Assignment operator(+=) evaluates to an unresolvable reference
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        try {
+            eval("_11_13_2_4 += 1;");
+            return false;
+        } catch (e) {
+            return e instanceof ReferenceError;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-40-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-40-s.js
new file mode 100644
index 000000000..2f31f32bb
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-40-s.js
@@ -0,0 +1,32 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-40-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(>>=) is a reference to an accessor property with the attribute value {[[Set]]:undefined}
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.defineProperty(obj, "prop", {
+            get: function () {
+                return 11;
+            },
+            set: undefined,
+            enumerable: true,
+            configurable: true
+        });
+
+        try {
+            obj.prop >>= 20;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError && obj.prop === 11;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-41-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-41-s.js
new file mode 100644
index 000000000..acc1d54ff
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-41-s.js
@@ -0,0 +1,32 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-41-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(>>>=) is a reference to an accessor property with the attribute value {[[Set]]:undefined}
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.defineProperty(obj, "prop", {
+            get: function () {
+                return 11;
+            },
+            set: undefined,
+            enumerable: true,
+            configurable: true
+        });
+
+        try {
+            obj.prop >>>= 20;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError && obj.prop === 11;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-42-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-42-s.js
new file mode 100644
index 000000000..6b2f4642a
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-42-s.js
@@ -0,0 +1,32 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-42-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(&=) is a reference to an accessor property with the attribute value {[[Set]]:undefined}
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.defineProperty(obj, "prop", {
+            get: function () {
+                return 11;
+            },
+            set: undefined,
+            enumerable: true,
+            configurable: true
+        });
+
+        try {
+            obj.prop &= 20;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError && obj.prop === 11;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-43-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-43-s.js
new file mode 100644
index 000000000..72aafec6e
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-43-s.js
@@ -0,0 +1,32 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-43-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(^=) is a reference to an accessor property with the attribute value {[[Set]]:undefined}
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.defineProperty(obj, "prop", {
+            get: function () {
+                return 11;
+            },
+            set: undefined,
+            enumerable: true,
+            configurable: true
+        });
+
+        try {
+            obj.prop ^= 20;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError && obj.prop === 11;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-44-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-44-s.js
new file mode 100644
index 000000000..33a47ddb9
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-44-s.js
@@ -0,0 +1,32 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-44-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(|=) is a reference of to an accessor property with the attribute value {[[Set]]:undefined}
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.defineProperty(obj, "prop", {
+            get: function () {
+                return 11;
+            },
+            set: undefined,
+            enumerable: true,
+            configurable: true
+        });
+
+        try {
+            obj.prop |= 20;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError && obj.prop === 11;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-45-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-45-s.js
new file mode 100644
index 000000000..5122b4bdf
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-45-s.js
@@ -0,0 +1,25 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-45-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(*=) is a reference to a non-existent property of an object whose [[Extensible]] internal property if false
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.preventExtensions(obj);
+
+        try {
+            obj.len *= 10;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-46-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-46-s.js
new file mode 100644
index 000000000..382f41c25
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-46-s.js
@@ -0,0 +1,25 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-46-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(/=) is a reference to a non-existent property of an object whose [[Extensible]] internal property if false
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.preventExtensions(obj);
+
+        try {
+            obj.len /= 10;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-47-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-47-s.js
new file mode 100644
index 000000000..4e3761c20
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-47-s.js
@@ -0,0 +1,25 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-47-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(%=) is a reference to a non-existent property of an object whose [[Extensible]] internal property if false
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.preventExtensions(obj);
+
+        try {
+            obj.len %= 10;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-48-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-48-s.js
new file mode 100644
index 000000000..fa14cbf86
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-48-s.js
@@ -0,0 +1,25 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-48-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(+=) is a reference to a non-existent property of an object whose [[Extensible]] internal property if false
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.preventExtensions(obj);
+
+        try {
+            obj.len += 10;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-49-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-49-s.js
new file mode 100644
index 000000000..b9105eca8
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-49-s.js
@@ -0,0 +1,25 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-49-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(-=) is a reference to a non-existent property of an object whose [[Extensible]] internal property if false
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.preventExtensions(obj);
+
+        try {
+            obj.len -= 10;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-5-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-5-s.js
new file mode 100644
index 000000000..09fdb5fa9
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-5-s.js
@@ -0,0 +1,22 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-5-s.js
+ * @description Strict Mode - ReferenceError is thrown if the LeftHandSideExpression of a Compound Assignment operator(-=) evaluates to an unresolvable reference
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        try {
+            eval("_11_13_2_5 -= 1;");
+            return false;
+        } catch (e) {
+            return e instanceof ReferenceError;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-50-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-50-s.js
new file mode 100644
index 000000000..7ae50545b
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-50-s.js
@@ -0,0 +1,25 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-50-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(<<=) is a reference to a non-existent property of an object whose [[Extensible]] internal property if false
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.preventExtensions(obj);
+
+        try {
+            obj.len <<= 10;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-51-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-51-s.js
new file mode 100644
index 000000000..7818d3d81
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-51-s.js
@@ -0,0 +1,25 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-51-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(>>=) is a reference to a non-existent property of an object whose [[Extensible]] internal property if false
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.preventExtensions(obj);
+
+        try {
+            obj.len >>= 10;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-52-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-52-s.js
new file mode 100644
index 000000000..0668c86e6
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-52-s.js
@@ -0,0 +1,25 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-52-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(>>>=) is a reference to a non-existent property of an object whose [[Extensible]] internal property if false
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.preventExtensions(obj);
+
+        try {
+            obj.len >>>= 10;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-53-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-53-s.js
new file mode 100644
index 000000000..64bdafb9b
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-53-s.js
@@ -0,0 +1,25 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-53-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(&=) is a reference to a non-existent property of an object whose [[Extensible]] internal property if false
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.preventExtensions(obj);
+
+        try {
+            obj.len &= 10;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-54-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-54-s.js
new file mode 100644
index 000000000..f5439a483
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-54-s.js
@@ -0,0 +1,25 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-54-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(^=) is a reference to a non-existent property of an object whose [[Extensible]] internal property if false
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.preventExtensions(obj);
+
+        try {
+            obj.len ^= 10;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-55-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-55-s.js
new file mode 100644
index 000000000..e44a53038
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-55-s.js
@@ -0,0 +1,25 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-55-s.js
+ * @description Strict Mode - TypeError is thrown if The LeftHandSide of a Compound Assignment operator(|=) is a reference to a non-existent property of an object whose [[Extensible]] internal property if false
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var obj = {};
+        Object.preventExtensions(obj);
+
+        try {
+            obj.len |= 10;
+            return false;
+        } catch (e) {
+            return e instanceof TypeError;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-1-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-1-s.js
new file mode 100644
index 000000000..6bbe5ceb7
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-1-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-6-1-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier eval appear as the LeftHandSideExpression of a Compound Assignment operator(*=)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var blah = eval;
+        try {
+            eval("eval *= 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === eval;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-10-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-10-s.js
new file mode 100644
index 000000000..acf0fc522
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-10-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-6-10-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier eval appear as the LeftHandSideExpression of a Compound Assignment operator(^=)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var blah = eval;
+        try {
+            eval("eval ^= 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === eval;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-11-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-11-s.js
new file mode 100644
index 000000000..7273172df
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-11-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-6-11-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier eval appear as the LeftHandSideExpression of a Compound Assignment operator(|=)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var blah = eval;
+        try {
+            eval("eval |= 20;"); 
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === eval;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-12-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-12-s.js
new file mode 100644
index 000000000..b3eaf8e76
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-12-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-6-12-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier arguments appear as the LeftHandSideExpression of a Compound Assignment operator(*=)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var blah = arguments;
+        try {
+            eval("arguments *= 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === arguments;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-13-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-13-s.js
new file mode 100644
index 000000000..f553885ba
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-13-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-6-13-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier arguments appear as the LeftHandSideExpression of a Compound Assignment operator(/=)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var blah = arguments;
+        try {
+            eval("arguments /= 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === arguments;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-14-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-14-s.js
new file mode 100644
index 000000000..f039ab988
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-14-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-6-14-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier arguments appear as the LeftHandSideExpression of a Compound Assignment operator(%=)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var blah = arguments;
+        try {
+            eval("arguments %= 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === arguments;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-15-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-15-s.js
new file mode 100644
index 000000000..cd473315c
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-15-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-6-15-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier arguments appear as the LeftHandSideExpression of a Compound Assignment operator(+=)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var blah = arguments;
+        try {
+            eval("arguments += 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === arguments;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-16-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-16-s.js
new file mode 100644
index 000000000..4c7038b79
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-16-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-6-16-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier arguments appear as the LeftHandSideExpression of a Compound Assignment operator(-=)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var blah = arguments;
+        try {
+            eval("arguments -= 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === arguments;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-17-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-17-s.js
new file mode 100644
index 000000000..1b0efaf36
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-17-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-6-17-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier arguments appear as the LeftHandSideExpression of a Compound Assignment operator(<<=)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var blah = arguments;
+        try {
+            eval("arguments <<= 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === arguments;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-18-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-18-s.js
new file mode 100644
index 000000000..0413ebfeb
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-18-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-6-18-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier arguments appear as the LeftHandSideExpression of a Compound Assignment operator(>>=)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var blah = arguments;
+        try {
+            eval("arguments >>= 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === arguments;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-19-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-19-s.js
new file mode 100644
index 000000000..8af9d1b37
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-19-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-6-19-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier arguments appear as the LeftHandSideExpression of a Compound Assignment operator(>>>=)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var blah = arguments;
+        try {
+            eval("arguments >>>= 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === arguments;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-1gs.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-1gs.js
new file mode 100644
index 000000000..a3f33416c
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-1gs.js
@@ -0,0 +1,16 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-6-1gs.js
+ * @description Strict Mode - SyntaxError is throw if the identifier eval appears as the LeftHandSideExpression of a Compound Assignment operator(*=)
+ * @onlyStrict
+ * @negative ^((?!NotEarlyError).)*$
+ */
+
+"use strict";
+throw NotEarlyError;
+eval *= 20;
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-2-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-2-s.js
new file mode 100644
index 000000000..f342f29ef
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-2-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-6-2-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier eval appear as the LeftHandSideExpression of a Compound Assignment operator(/=)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var blah = eval;
+        try {
+            eval("eval /= 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === eval;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-20-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-20-s.js
new file mode 100644
index 000000000..468a01dab
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-20-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-6-20-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier arguments appear as the LeftHandSideExpression of a Compound Assignment operator(&=)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var blah = arguments;
+        try {
+            eval("arguments &= 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === arguments;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-21-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-21-s.js
new file mode 100644
index 000000000..6ce81e359
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-21-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-6-21-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier arguments appear as the LeftHandSideExpression of a Compound Assignment operator(^=)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var blah = arguments;
+        try {
+            eval("arguments ^= 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === arguments;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-22-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-22-s.js
new file mode 100644
index 000000000..48a6651c2
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-22-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-6-22-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier arguments appear as the LeftHandSideExpression of a Compound Assignment operator(|=)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var blah = arguments;
+        try {
+            eval("arguments |= 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === arguments;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-3-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-3-s.js
new file mode 100644
index 000000000..133e41d16
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-3-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-6-3-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier eval appear as the LeftHandSideExpression of a Compound Assignment operator(%=)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var blah = eval;
+        try {
+            eval("eval %= 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === eval;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-4-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-4-s.js
new file mode 100644
index 000000000..c5314930e
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-4-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-6-4-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier eval appear as the LeftHandSideExpression of a Compound Assignment operator(+=)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var blah = eval;
+        try {
+            eval("eval += 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === eval;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-5-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-5-s.js
new file mode 100644
index 000000000..394632041
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-5-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-6-5-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier eval appear as the LeftHandSideExpression of a Compound Assignment operator(-=)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var blah = eval;
+        try {
+            eval("eval -= 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === eval;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-6-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-6-s.js
new file mode 100644
index 000000000..e3e709b76
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-6-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-6-6-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier eval appear as the LeftHandSideExpression of a Compound Assignment operator(<<=)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var blah = eval;
+        try {
+            eval("eval <<= 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === eval;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-7-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-7-s.js
new file mode 100644
index 000000000..f07505be0
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-7-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-6-7-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier eval appear as the LeftHandSideExpression of a Compound Assignment operator(>>=)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var blah = eval;
+        try {
+            eval("eval >>= 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === eval;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-8-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-8-s.js
new file mode 100644
index 000000000..8a2226ae1
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-8-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-6-8-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier eval appear as the LeftHandSideExpression of a Compound Assignment operator(>>>=)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var blah = eval;
+        try {
+            eval("eval >>>= 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === eval;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-9-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-9-s.js
new file mode 100644
index 000000000..4f5817fdb
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-9-s.js
@@ -0,0 +1,23 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-6-9-s.js
+ * @description Strict Mode - SyntaxError is thrown if the identifier eval appear as the LeftHandSideExpression of a Compound Assignment operator(&=)
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        var blah = eval;
+        try {
+            eval("eval &= 20;");
+            return false;
+        } catch (e) {
+            return e instanceof SyntaxError && blah === eval;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-s.js
new file mode 100644
index 000000000..832d3afd0
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-6-s.js
@@ -0,0 +1,22 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-6-s.js
+ * @description Strict Mode - ReferenceError is thrown if the LeftHandSideExpression of a Compound Assignment operator(<<=) evaluates to an unresolvable reference
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        try {
+            eval("_11_13_2_6 <<= 1;");
+            return false;
+        } catch (e) {
+            return e instanceof ReferenceError;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-7-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-7-s.js
new file mode 100644
index 000000000..8a290330a
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-7-s.js
@@ -0,0 +1,22 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-7-s.js
+ * @description Strict Mode - ReferenceError is thrown if the LeftHandSideExpression of a Compound Assignment operator(>>=) evaluates to an unresolvable reference
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        try {
+            eval("_11_13_2_7 >>= 1;");
+            return false;
+        } catch (e) {
+            return e instanceof ReferenceError;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-8-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-8-s.js
new file mode 100644
index 000000000..4f4167f87
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-8-s.js
@@ -0,0 +1,22 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-8-s.js
+ * @description Strict Mode - ReferenceError is thrown if the LeftHandSideExpression of a Compound Assignment operator(>>>=) evaluates to an unresolvable reference
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        try {
+            eval("_11_13_2_8 >>>= 1;");
+            return false;
+        } catch (e) {
+            return e instanceof ReferenceError;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-9-s.js b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-9-s.js
new file mode 100644
index 000000000..3393d5c27
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/11.13.2-9-s.js
@@ -0,0 +1,22 @@
+/// Copyright (c) 2012 Ecma International.  All rights reserved. 
+/// Ecma International makes this code available under the terms and conditions set
+/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
+/// "Use Terms").   Any redistribution of this code must retain the above 
+/// copyright and this notice and otherwise comply with the Use Terms.
+/**
+ * @path ch11/11.13/11.13.2/11.13.2-9-s.js
+ * @description Strict Mode - ReferenceError is thrown if the LeftHandSideExpression of a Compound Assignment operator(&=) evaluates to an unresolvable reference
+ * @onlyStrict
+ */
+
+
+function testcase() {
+        "use strict";
+        try {
+            eval("_11_13_2_9 &= 1;");
+            return false;
+        } catch (e) {
+            return e instanceof ReferenceError;
+        }
+    }
+runTestCase(testcase);
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T1.js
new file mode 100644
index 000000000..db0495c5c
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T1.js
@@ -0,0 +1,71 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * White Space and Line Terminator between LeftHandSideExpression and "@=" or between "@=" and AssignmentExpression are allowed
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A1_T1.js
+ * @description Checking by using eval, check operator is x *= y
+ */
+
+//CHECK#1
+x = -1;
+if ((eval("x\u0009*=\u0009-1")) !== 1) {
+  $ERROR('#1: x = -1; (x\\u0009*=\\u0009-1) === 1');
+}
+
+//CHECK#2
+x = -1;
+if ((eval("x\u000B*=\u000B-1")) !== 1) {
+  $ERROR('#2: x = -1; (x\\u000B*=\\u000B-1) === 1');  
+}
+
+//CHECK#3
+x = -1;
+if ((eval("x\u000C*=\u000C-1")) !== 1) {
+  $ERROR('#3: x = -1; (x\\u000C*=\\u000C-1) === 1');
+}
+
+//CHECK#4
+x = -1;
+if ((eval("x\u0020*=\u0020-1")) !== 1) {
+  $ERROR('#4: x = -1; (x\\u0020*=\\u0020-1) === 1');
+}
+
+//CHECK#5
+x = -1;
+if ((eval("x\u00A0*=\u00A0-1")) !== 1) {
+  $ERROR('#5: x = -1; (x\\u00A0*=\\u00A0-1) === 1');
+}
+
+//CHECK#6
+x = -1;
+if ((eval("x\u000A*=\u000A-1")) !== 1) {
+  $ERROR('#6: x = -1; (x\\u000A*=\\u000A-1) === 1');  
+}
+
+//CHECK#7
+x = -1;
+if ((eval("x\u000D*=\u000D-1")) !== 1) {
+  $ERROR('#7: x = -1; (x\\u000D*=\\u000D-1) === 1');
+}
+
+//CHECK#8
+x = -1;
+if ((eval("x\u2028*=\u2028-1")) !== 1) {
+  $ERROR('#8: x = -1; (x\\u2028*=\\u2028-1) === 1');
+}
+
+//CHECK#9
+x = -1;
+if ((eval("x\u2029*=\u2029-1")) !== 1) {
+  $ERROR('#9: x = -1; (x\\u2029*=\\u2029-1) === 1');
+}
+
+
+//CHECK#10
+x = -1;
+if ((eval("x\u0009\u000B\u000C\u0020\u00A0\u000A\u000D\u2028\u2029*=\u0009\u000B\u000C\u0020\u00A0\u000A\u000D\u2028\u2029-1")) !== 1) {
+  $ERROR('#10: x = -1; (x\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u2029*=\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u2029-1) === 1');
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T10.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T10.js
new file mode 100644
index 000000000..3487b3dd0
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T10.js
@@ -0,0 +1,71 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * White Space and Line Terminator between LeftHandSideExpression and "@=" or between "@=" and AssignmentExpression are allowed
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A1_T10.js
+ * @description Checking by using eval, check operator is x ^= y
+ */
+
+//CHECK#1
+x = 1;
+if ((eval("x\u0009^=\u00091")) !== 0) {
+  $ERROR('#1: x = 1; (x\\u0009^=\\u00091) === 0');
+}
+
+//CHECK#2
+x = 1;
+if ((eval("x\u000B^=\u000B1")) !== 0) {
+  $ERROR('#2: x = 1; (x\\u000B^=\\u000B1) === 0');  
+}
+
+//CHECK#3
+x = 1;
+if ((eval("x\u000C^=\u000C1")) !== 0) {
+  $ERROR('#3: x = 1; (x\\u000C^=\\u000C1) === 0');
+}
+
+//CHECK#4
+x = 1;
+if ((eval("x\u0020^=\u00201")) !== 0) {
+  $ERROR('#4: x = 1; (x\\u0020^=\\u00201) === 0');
+}
+
+//CHECK#5
+x = 1;
+if ((eval("x\u00A0^=\u00A01")) !== 0) {
+  $ERROR('#5: x = 1; (x\\u00A0^=\\u00A01) === 0');
+}
+
+//CHECK#6
+x = 1;
+if ((eval("x\u000A^=\u000A1")) !== 0) {
+  $ERROR('#6: x = 1; (x\\u000A^=\\u000A1) === 0');  
+}
+
+//CHECK#7
+x = 1;
+if ((eval("x\u000D^=\u000D1")) !== 0) {
+  $ERROR('#7: x = 1; (x\\u000D^=\\u000D1) === 0');
+}
+
+//CHECK#8
+x = 1;
+if ((eval("x\u2028^=\u20281")) !== 0) {
+  $ERROR('#8: x = 1; (x\\u2028^=\\u20281) === 0');
+}
+
+//CHECK#9
+x = 1;
+if ((eval("x\u2029^=\u20291")) !== 0) {
+  $ERROR('#9: x = 1; (x\\u2029^=\\u20291) === 0');
+}
+
+
+//CHECK#10
+x = 1;
+if ((eval("x\u0009\u000B\u000C\u0020\u00A0\u000A\u000D\u2028\u2029^=\u0009\u000B\u000C\u0020\u00A0\u000A\u000D\u2028\u20291")) !== 0) {
+  $ERROR('#10: x = 1; (x\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u2029^=\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u20291) === 0');
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T11.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T11.js
new file mode 100644
index 000000000..fc81632c0
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T11.js
@@ -0,0 +1,71 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * White Space and Line Terminator between LeftHandSideExpression and "@=" or between "@=" and AssignmentExpression are allowed
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A1_T11.js
+ * @description Checking by using eval, check operator is x |= y
+ */
+
+//CHECK#1
+x = 0;
+if ((eval("x\u0009|=\u00091")) !== 1) {
+  $ERROR('#1: x = 0; (x\\u0009|=\\u00091) === 1');
+}
+
+//CHECK#2
+x = 0;
+if ((eval("x\u000B|=\u000B1")) !== 1) {
+  $ERROR('#2: x = 0; (x\\u000B|=\\u000B1) === 1');  
+}
+
+//CHECK#3
+x = 0;
+if ((eval("x\u000C|=\u000C1")) !== 1) {
+  $ERROR('#3: x = 0; (x\\u000C|=\\u000C1) === 1');
+}
+
+//CHECK#4
+x = 0;
+if ((eval("x\u0020|=\u00201")) !== 1) {
+  $ERROR('#4: x = 0; (x\\u0020|=\\u00201) === 1');
+}
+
+//CHECK#5
+x = 0;
+if ((eval("x\u00A0|=\u00A01")) !== 1) {
+  $ERROR('#5: x = 0; (x\\u00A0|=\\u00A01) === 1');
+}
+
+//CHECK#6
+x = 0;
+if ((eval("x\u000A|=\u000A1")) !== 1) {
+  $ERROR('#6: x = 0; (x\\u000A|=\\u000A1) === 1');  
+}
+
+//CHECK#7
+x = 0;
+if ((eval("x\u000D|=\u000D1")) !== 1) {
+  $ERROR('#7: x = 0; (x\\u000D|=\\u000D1) === 1');
+}
+
+//CHECK#8
+x = 0;
+if ((eval("x\u2028|=\u20281")) !== 1) {
+  $ERROR('#8: x = 0; (x\\u2028|=\\u20281) === 1');
+}
+
+//CHECK#9
+x = 0;
+if ((eval("x\u2029|=\u20291")) !== 1) {
+  $ERROR('#9: x = 0; (x\\u2029|=\\u20291) === 1');
+}
+
+
+//CHECK#10
+x = 0;
+if ((eval("x\u0009\u000B\u000C\u0020\u00A0\u000A\u000D\u2028\u2029|=\u0009\u000B\u000C\u0020\u00A0\u000A\u000D\u2028\u20291")) !== 1) {
+  $ERROR('#10: x = 0; (x\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u2029|=\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u20291) === 1');
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T2.js
new file mode 100644
index 000000000..1e15c0115
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T2.js
@@ -0,0 +1,71 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * White Space and Line Terminator between LeftHandSideExpression and "@=" or between "@=" and AssignmentExpression are allowed
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A1_T2.js
+ * @description Checking by using eval, check operator is x /= y
+ */
+
+//CHECK#1
+x = -1;
+if ((eval("x\u0009/=\u0009-1")) !== 1) {
+  $ERROR('#1: x = -1; (x\\u0009/=\\u0009-1) === 1');
+}
+
+//CHECK#2
+x = -1;
+if ((eval("x\u000B/=\u000B-1")) !== 1) {
+  $ERROR('#2: x = -1; (x\\u000B/=\\u000B-1) === 1');  
+}
+
+//CHECK#3
+x = -1;
+if ((eval("x\u000C/=\u000C-1")) !== 1) {
+  $ERROR('#3: x = -1; (x\\u000C/=\\u000C-1) === 1');
+}
+
+//CHECK#4
+x = -1;
+if ((eval("x\u0020/=\u0020-1")) !== 1) {
+  $ERROR('#4: x = -1; (x\\u0020/=\\u0020-1) === 1');
+}
+
+//CHECK#5
+x = -1;
+if ((eval("x\u00A0/=\u00A0-1")) !== 1) {
+  $ERROR('#5: x = -1; (x\\u00A0/=\\u00A0-1) === 1');
+}
+
+//CHECK#6
+x = -1;
+if ((eval("x\u000A/=\u000A-1")) !== 1) {
+  $ERROR('#6: x = -1; (x\\u000A/=\\u000A-1) === 1');  
+}
+
+//CHECK#7
+x = -1;
+if ((eval("x\u000D/=\u000D-1")) !== 1) {
+  $ERROR('#7: x = -1; (x\\u000D/=\\u000D-1) === 1');
+}
+
+//CHECK#8
+x = -1;
+if ((eval("x\u2028/=\u2028-1")) !== 1) {
+  $ERROR('#8: x = -1; (x\\u2028/=\\u2028-1) === 1');
+}
+
+//CHECK#9
+x = -1;
+if ((eval("x\u2029/=\u2029-1")) !== 1) {
+  $ERROR('#9: x = -1; (x\\u2029/=\\u2029-1) === 1');
+}
+
+
+//CHECK#10
+x = -1;
+if ((eval("x\u0009\u000B\u000C\u0020\u00A0\u000A\u000D\u2028\u2029/=\u0009\u000B\u000C\u0020\u00A0\u000A\u000D\u2028\u2029-1")) !== 1) {
+  $ERROR('#10: x = -1; (x\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u2029/=\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u2029-1) === 1');
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T3.js
new file mode 100644
index 000000000..1e2a6760a
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T3.js
@@ -0,0 +1,71 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * White Space and Line Terminator between LeftHandSideExpression and "@=" or between "@=" and AssignmentExpression are allowed
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A1_T3.js
+ * @description Checking by using eval, check operator is x %= y
+ */
+
+//CHECK#1
+x = -1;
+if ((eval("x\u0009%=\u0009-1")) !== 0) {
+  $ERROR('#1: x = -1; (x\\u0009%=\\u0009-1) === 0');
+}
+
+//CHECK#2
+x = -1;
+if ((eval("x\u000B%=\u000B-1")) !== 0) {
+  $ERROR('#2: x = -1; (x\\u000B%=\\u000B-1) === 0');  
+}
+
+//CHECK#3
+x = -1;
+if ((eval("x\u000C%=\u000C-1")) !== 0) {
+  $ERROR('#3: x = -1; (x\\u000C%=\\u000C-1) === 0');
+}
+
+//CHECK#4
+x = -1;
+if ((eval("x\u0020%=\u0020-1")) !== 0) {
+  $ERROR('#4: x = -1; (x\\u0020%=\\u0020-1) === 0');
+}
+
+//CHECK#5
+x = -1;
+if ((eval("x\u00A0%=\u00A0-1")) !== 0) {
+  $ERROR('#5: x = -1; (x\\u00A0%=\\u00A0-1) === 0');
+}
+
+//CHECK#6
+x = -1;
+if ((eval("x\u000A%=\u000A-1")) !== 0) {
+  $ERROR('#6: x = -1; (x\\u000A%=\\u000A-1) === 0');  
+}
+
+//CHECK#7
+x = -1;
+if ((eval("x\u000D%=\u000D-1")) !== 0) {
+  $ERROR('#7: x = -1; (x\\u000D%=\\u000D-1) === 0');
+}
+
+//CHECK#8
+x = -1;
+if ((eval("x\u2028%=\u2028-1")) !== 0) {
+  $ERROR('#8: x = -1; (x\\u2028%=\\u2028-1) === 0');
+}
+
+//CHECK#9
+x = -1;
+if ((eval("x\u2029%=\u2029-1")) !== 0) {
+  $ERROR('#9: x = -1; (x\\u2029%=\\u2029-1) === 0');
+}
+
+
+//CHECK#10
+x = -1;
+if ((eval("x\u0009\u000B\u000C\u0020\u00A0\u000A\u000D\u2028\u2029%=\u0009\u000B\u000C\u0020\u00A0\u000A\u000D\u2028\u2029-1")) !== 0) {
+  $ERROR('#10: x = -1; (x\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u2029%=\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u2029-1) === 0');
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T4.js
new file mode 100644
index 000000000..fa97eb77f
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T4.js
@@ -0,0 +1,71 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * White Space and Line Terminator between LeftHandSideExpression and "@=" or between "@=" and AssignmentExpression are allowed
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A1_T4.js
+ * @description Checking by using eval, check operator is x += y
+ */
+
+//CHECK#1
+x = -1;
+if ((eval("x\u0009+=\u0009-1")) !== -2) {
+  $ERROR('#1: x = -1; (x\\u0009+=\\u0009-1) === -2');
+}
+
+//CHECK#2
+x = -1;
+if ((eval("x\u000B+=\u000B-1")) !== -2) {
+  $ERROR('#2: x = -1; (x\\u000B+=\\u000B-1) === -2');  
+}
+
+//CHECK#3
+x = -1;
+if ((eval("x\u000C+=\u000C-1")) !== -2) {
+  $ERROR('#3: x = -1; (x\\u000C+=\\u000C-1) === -2');
+}
+
+//CHECK#4
+x = -1;
+if ((eval("x\u0020+=\u0020-1")) !== -2) {
+  $ERROR('#4: x = -1; (x\\u0020+=\\u0020-1) === -2');
+}
+
+//CHECK#5
+x = -1;
+if ((eval("x\u00A0+=\u00A0-1")) !== -2) {
+  $ERROR('#5: x = -1; (x\\u00A0+=\\u00A0-1) === -2');
+}
+
+//CHECK#6
+x = -1;
+if ((eval("x\u000A+=\u000A-1")) !== -2) {
+  $ERROR('#6: x = -1; (x\\u000A+=\\u000A-1) === -2');  
+}
+
+//CHECK#7
+x = -1;
+if ((eval("x\u000D+=\u000D-1")) !== -2) {
+  $ERROR('#7: x = -1; (x\\u000D+=\\u000D-1) === -2');
+}
+
+//CHECK#8
+x = -1;
+if ((eval("x\u2028+=\u2028-1")) !== -2) {
+  $ERROR('#8: x = -1; (x\\u2028+=\\u2028-1) === -2');
+}
+
+//CHECK#9
+x = -1;
+if ((eval("x\u2029+=\u2029-1")) !== -2) {
+  $ERROR('#9: x = -1; (x\\u2029+=\\u2029-1) === -2');
+}
+
+
+//CHECK#10
+x = -1;
+if ((eval("x\u0009\u000B\u000C\u0020\u00A0\u000A\u000D\u2028\u2029+=\u0009\u000B\u000C\u0020\u00A0\u000A\u000D\u2028\u2029-1")) !== -2) {
+  $ERROR('#10: x = -1; (x\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u2029+=\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u2029-1) === -2');
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T5.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T5.js
new file mode 100644
index 000000000..d4fc5a620
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T5.js
@@ -0,0 +1,71 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * White Space and Line Terminator between LeftHandSideExpression and "@=" or between "@=" and AssignmentExpression are allowed
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A1_T5.js
+ * @description Checking by using eval, check operator is x -= y
+ */
+
+//CHECK#1
+x = -1;
+if ((eval("x\u0009-=\u00091")) !== -2) {
+  $ERROR('#1: x = -1; (x\\u0009-=\\u00091) === -2');
+}
+
+//CHECK#2
+x = -1;
+if ((eval("x\u000B-=\u000B1")) !== -2) {
+  $ERROR('#2: x = -1; (x\\u000B-=\\u000B1) === -2');  
+}
+
+//CHECK#3
+x = -1;
+if ((eval("x\u000C-=\u000C1")) !== -2) {
+  $ERROR('#3: x = -1; (x\\u000C-=\\u000C1) === -2');
+}
+
+//CHECK#4
+x = -1;
+if ((eval("x\u0020-=\u00201")) !== -2) {
+  $ERROR('#4: x = -1; (x\\u0020-=\\u00201) === -2');
+}
+
+//CHECK#5
+x = -1;
+if ((eval("x\u00A0-=\u00A01")) !== -2) {
+  $ERROR('#5: x = -1; (x\\u00A0-=\\u00A01) === -2');
+}
+
+//CHECK#6
+x = -1;
+if ((eval("x\u000A-=\u000A1")) !== -2) {
+  $ERROR('#6: x = -1; (x\\u000A-=\\u000A1) === -2');  
+}
+
+//CHECK#7
+x = -1;
+if ((eval("x\u000D-=\u000D1")) !== -2) {
+  $ERROR('#7: x = -1; (x\\u000D-=\\u000D1) === -2');
+}
+
+//CHECK#8
+x = -1;
+if ((eval("x\u2028-=\u20281")) !== -2) {
+  $ERROR('#8: x = -1; (x\\u2028-=\\u20281) === -2');
+}
+
+//CHECK#9
+x = -1;
+if ((eval("x\u2029-=\u20291")) !== -2) {
+  $ERROR('#9: x = -1; (x\\u2029-=\\u20291) === -2');
+}
+
+
+//CHECK#10
+x = -1;
+if ((eval("x\u0009\u000B\u000C\u0020\u00A0\u000A\u000D\u2028\u2029-=\u0009\u000B\u000C\u0020\u00A0\u000A\u000D\u2028\u20291")) !== -2) {
+  $ERROR('#10: x = -1; (x\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u2029-=\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u20291) === -2');
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T6.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T6.js
new file mode 100644
index 000000000..65370cf1b
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T6.js
@@ -0,0 +1,71 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * White Space and Line Terminator between LeftHandSideExpression and "@=" or between "@=" and AssignmentExpression are allowed
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A1_T6.js
+ * @description Checking by using eval, check operator is x <<= y
+ */
+
+//CHECK#1
+x = 1;
+if ((eval("x\u0009<<=\u00091")) !== 2) {
+  $ERROR('#1: x = 1; (x\\u0009<<=\\u00091) === 2');
+}
+
+//CHECK#2
+x = 1;
+if ((eval("x\u000B<<=\u000B1")) !== 2) {
+  $ERROR('#2: x = 1; (x\\u000B<<=\\u000B1) === 2');  
+}
+
+//CHECK#3
+x = 1;
+if ((eval("x\u000C<<=\u000C1")) !== 2) {
+  $ERROR('#3: x = 1; (x\\u000C<<=\\u000C1) === 2');
+}
+
+//CHECK#4
+x = 1;
+if ((eval("x\u0020<<=\u00201")) !== 2) {
+  $ERROR('#4: x = 1; (x\\u0020<<=\\u00201) === 2');
+}
+
+//CHECK#5
+x = 1;
+if ((eval("x\u00A0<<=\u00A01")) !== 2) {
+  $ERROR('#5: x = 1; (x\\u00A0<<=\\u00A01) === 2');
+}
+
+//CHECK#6
+x = 1;
+if ((eval("x\u000A<<=\u000A1")) !== 2) {
+  $ERROR('#6: x = 1; (x\\u000A<<=\\u000A1) === 2');  
+}
+
+//CHECK#7
+x = 1;
+if ((eval("x\u000D<<=\u000D1")) !== 2) {
+  $ERROR('#7: x = 1; (x\\u000D<<=\\u000D1) === 2');
+}
+
+//CHECK#8
+x = 1;
+if ((eval("x\u2028<<=\u20281")) !== 2) {
+  $ERROR('#8: x = 1; (x\\u2028<<=\\u20281) === 2');
+}
+
+//CHECK#9
+x = 1;
+if ((eval("x\u2029<<=\u20291")) !== 2) {
+  $ERROR('#9: x = 1; (x\\u2029<<=\\u20291) === 2');
+}
+
+
+//CHECK#10
+x = 1;
+if ((eval("x\u0009\u000B\u000C\u0020\u00A0\u000A\u000D\u2028\u2029<<=\u0009\u000B\u000C\u0020\u00A0\u000A\u000D\u2028\u20291")) !== 2) {
+  $ERROR('#10: x = 1; (x\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u2029<<=\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u20291) === 2');
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T7.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T7.js
new file mode 100644
index 000000000..5093eaeca
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T7.js
@@ -0,0 +1,71 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * White Space and Line Terminator between LeftHandSideExpression and "@=" or between "@=" and AssignmentExpression are allowed
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A1_T7.js
+ * @description Checking by using eval, check operator is x >>= y
+ */
+
+//CHECK#1
+x = 1;
+if ((eval("x\u0009>>=\u00091")) !== 0) {
+  $ERROR('#1: x = 1; (x\\u0009>>=\\u00091) === 0');
+}
+
+//CHECK#2
+x = 1;
+if ((eval("x\u000B>>=\u000B1")) !== 0) {
+  $ERROR('#2: x = 1; (x\\u000B>>=\\u000B1) === 0');  
+}
+
+//CHECK#3
+x = 1;
+if ((eval("x\u000C>>=\u000C1")) !== 0) {
+  $ERROR('#3: x = 1; (x\\u000C>>=\\u000C1) === 0');
+}
+
+//CHECK#4
+x = 1;
+if ((eval("x\u0020>>=\u00201")) !== 0) {
+  $ERROR('#4: x = 1; (x\\u0020>>=\\u00201) === 0');
+}
+
+//CHECK#5
+x = 1;
+if ((eval("x\u00A0>>=\u00A01")) !== 0) {
+  $ERROR('#5: x = 1; (x\\u00A0>>=\\u00A01) === 0');
+}
+
+//CHECK#6
+x = 1;
+if ((eval("x\u000A>>=\u000A1")) !== 0) {
+  $ERROR('#6: x = 1; (x\\u000A>>=\\u000A1) === 0');  
+}
+
+//CHECK#7
+x = 1;
+if ((eval("x\u000D>>=\u000D1")) !== 0) {
+  $ERROR('#7: x = 1; (x\\u000D>>=\\u000D1) === 0');
+}
+
+//CHECK#8
+x = 1;
+if ((eval("x\u2028>>=\u20281")) !== 0) {
+  $ERROR('#8: x = 1; (x\\u2028>>=\\u20281) === 0');
+}
+
+//CHECK#9
+x = 1;
+if ((eval("x\u2029>>=\u20291")) !== 0) {
+  $ERROR('#9: x = 1; (x\\u2029>>=\\u20291) === 0');
+}
+
+
+//CHECK#10
+x = 1;
+if ((eval("x\u0009\u000B\u000C\u0020\u00A0\u000A\u000D\u2028\u2029>>=\u0009\u000B\u000C\u0020\u00A0\u000A\u000D\u2028\u20291")) !== 0) {
+  $ERROR('#10: x = 1; (x\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u2029>>=\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u20291) === 0');
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T8.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T8.js
new file mode 100644
index 000000000..8469f353d
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T8.js
@@ -0,0 +1,71 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * White Space and Line Terminator between LeftHandSideExpression and "@=" or between "@=" and AssignmentExpression are allowed
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A1_T8.js
+ * @description Checking by using eval, check operator is x >>>= y
+ */
+
+//CHECK#1
+x = 1;
+if ((eval("x\u0009>>>=\u00091")) !== 0) {
+  $ERROR('#1: x = 1; (x\\u0009>>>=\\u00091) === 0');
+}
+
+//CHECK#2
+x = 1;
+if ((eval("x\u000B>>>=\u000B1")) !== 0) {
+  $ERROR('#2: x = 1; (x\\u000B>>>=\\u000B1) === 0');  
+}
+
+//CHECK#3
+x = 1;
+if ((eval("x\u000C>>>=\u000C1")) !== 0) {
+  $ERROR('#3: x = 1; (x\\u000C>>>=\\u000C1) === 0');
+}
+
+//CHECK#4
+x = 1;
+if ((eval("x\u0020>>>=\u00201")) !== 0) {
+  $ERROR('#4: x = 1; (x\\u0020>>>=\\u00201) === 0');
+}
+
+//CHECK#5
+x = 1;
+if ((eval("x\u00A0>>>=\u00A01")) !== 0) {
+  $ERROR('#5: x = 1; (x\\u00A0>>>=\\u00A01) === 0');
+}
+
+//CHECK#6
+x = 1;
+if ((eval("x\u000A>>>=\u000A1")) !== 0) {
+  $ERROR('#6: x = 1; (x\\u000A>>>=\\u000A1) === 0');  
+}
+
+//CHECK#7
+x = 1;
+if ((eval("x\u000D>>>=\u000D1")) !== 0) {
+  $ERROR('#7: x = 1; (x\\u000D>>>=\\u000D1) === 0');
+}
+
+//CHECK#8
+x = 1;
+if ((eval("x\u2028>>>=\u20281")) !== 0) {
+  $ERROR('#8: x = 1; (x\\u2028>>>=\\u20281) === 0');
+}
+
+//CHECK#9
+x = 1;
+if ((eval("x\u2029>>>=\u20291")) !== 0) {
+  $ERROR('#9: x = 1; (x\\u2029>>>=\\u20291) === 0');
+}
+
+
+//CHECK#10
+x = 1;
+if ((eval("x\u0009\u000B\u000C\u0020\u00A0\u000A\u000D\u2028\u2029>>>=\u0009\u000B\u000C\u0020\u00A0\u000A\u000D\u2028\u20291")) !== 0) {
+  $ERROR('#10: x = 1; (x\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u2029>>>=\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u20291) === 0');
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T9.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T9.js
new file mode 100644
index 000000000..c73eac5e1
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A1_T9.js
@@ -0,0 +1,71 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * White Space and Line Terminator between LeftHandSideExpression and "@=" or between "@=" and AssignmentExpression are allowed
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A1_T9.js
+ * @description Checking by using eval, check operator is x &= y
+ */
+
+//CHECK#1
+x = 1;
+if ((eval("x\u0009&=\u00091")) !== 1) {
+  $ERROR('#1: x = 1; (x\\u0009&=\\u00091) === 1');
+}
+
+//CHECK#2
+x = 1;
+if ((eval("x\u000B&=\u000B1")) !== 1) {
+  $ERROR('#2: x = 1; (x\\u000B&=\\u000B1) === 1');  
+}
+
+//CHECK#3
+x = 1;
+if ((eval("x\u000C&=\u000C1")) !== 1) {
+  $ERROR('#3: x = 1; (x\\u000C&=\\u000C1) === 1');
+}
+
+//CHECK#4
+x = 1;
+if ((eval("x\u0020&=\u00201")) !== 1) {
+  $ERROR('#4: x = 1; (x\\u0020&=\\u00201) === 1');
+}
+
+//CHECK#5
+x = 1;
+if ((eval("x\u00A0&=\u00A01")) !== 1) {
+  $ERROR('#5: x = 1; (x\\u00A0&=\\u00A01) === 1');
+}
+
+//CHECK#6
+x = 1;
+if ((eval("x\u000A&=\u000A1")) !== 1) {
+  $ERROR('#6: x = 1; (x\\u000A&=\\u000A1) === 1');  
+}
+
+//CHECK#7
+x = 1;
+if ((eval("x\u000D&=\u000D1")) !== 1) {
+  $ERROR('#7: x = 1; (x\\u000D&=\\u000D1) === 1');
+}
+
+//CHECK#8
+x = 1;
+if ((eval("x\u2028&=\u20281")) !== 1) {
+  $ERROR('#8: x = 1; (x\\u2028&=\\u20281) === 1');
+}
+
+//CHECK#9
+x = 1;
+if ((eval("x\u2029&=\u20291")) !== 1) {
+  $ERROR('#9: x = 1; (x\\u2029&=\\u20291) === 1');
+}
+
+
+//CHECK#10
+x = 1;
+if ((eval("x\u0009\u000B\u000C\u0020\u00A0\u000A\u000D\u2028\u2029&=\u0009\u000B\u000C\u0020\u00A0\u000A\u000D\u2028\u20291")) !== 1) {
+  $ERROR('#10: x = 1; (x\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u2029&=\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u20291) === 1');
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.1.js
new file mode 100644
index 000000000..e6a01dd52
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.1.js
@@ -0,0 +1,26 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T1.1.js
+ * @description Either Type is not Reference or GetBase is not null, check opeartor is "x *= y"
+ */
+
+//CHECK#1
+var x = 1;
+var z = (x *= -1);
+if (z !== -1) {
+  $ERROR('#1: var x = 1; var z = (x *= -1); z === -1. Actual: ' + (z));
+}
+
+//CHECK#2
+var x = 1;
+var y = -1;
+var z = (x *= y);
+if (z !== -1) {
+  $ERROR('#2: var x = 1; var y = -1; var z = (x *= y); z === -1. Actual: ' + (z));
+}
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.10.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.10.js
new file mode 100644
index 000000000..a85d13eb0
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.10.js
@@ -0,0 +1,26 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T1.10.js
+ * @description Either Type is not Reference or GetBase is not null, check opeartor is "x ^= y"
+ */
+
+//CHECK#1
+var x = 1;
+var z = (x ^= 1);
+if (z !== 0) {
+  $ERROR('#1: var x = 1; var z = (x ^= 1); z === 0. Actual: ' + (z));
+}
+
+//CHECK#2
+var x = 1;
+var y = 1;
+var z = (x ^= y);
+if (z !== 0) {
+  $ERROR('#2: var x = 1; var y = 1; var z = (x ^= y); z === 0. Actual: ' + (z));
+}
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.11.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.11.js
new file mode 100644
index 000000000..925ed41d6
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.11.js
@@ -0,0 +1,26 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T1.11.js
+ * @description Either Type is not Reference or GetBase is not null, check opeartor is "x |= y"
+ */
+
+//CHECK#1
+var x = 0;
+var z = (x |= 1);
+if (z !== 1) {
+  $ERROR('#1: var x = 0; var z = (x |= 1); z === 1. Actual: ' + (z));
+}
+
+//CHECK#2
+var x = 0;
+var y = 1;
+var z = (x |= y);
+if (z !== 1) {
+  $ERROR('#2: var x = 0; var y = 1; var z = (x |= y); z === 1. Actual: ' + (z));
+}
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.2.js
new file mode 100644
index 000000000..d9ee6bd59
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.2.js
@@ -0,0 +1,26 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T1.2.js
+ * @description Either Type is not Reference or GetBase is not null, check opeartor is "x /= y"
+ */
+
+//CHECK#1
+var x = 1;
+var z = (x /= -1);
+if (z !== -1) {
+  $ERROR('#1: var x = 1; var z = (x /= -1); z === -1. Actual: ' + (z));
+}
+
+//CHECK#2
+var x = 1;
+var y = -1;
+var z = (x /= y);
+if (z !== -1) {
+  $ERROR('#2: var x = 1; var y = -1; var z = (x /= y); z === -1. Actual: ' + (z));
+}
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.3.js
new file mode 100644
index 000000000..70586cfbb
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.3.js
@@ -0,0 +1,26 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T1.3.js
+ * @description Either Type is not Reference or GetBase is not null, check opeartor is "x %= y"
+ */
+
+//CHECK#1
+var x = -1;
+var z = (x %= 2);
+if (z !== -1) {
+  $ERROR('#1: var x = -1; var z = (x %= 2); z === -1. Actual: ' + (z));
+}
+
+//CHECK#2
+var x = -1;
+var y = 2;
+var z = (x %= y);
+if (z !== -1) {
+  $ERROR('#2: var x = -1; var y = 2; var z = (x %= y); z === -1. Actual: ' + (z));
+}
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.4.js
new file mode 100644
index 000000000..7fcda2fec
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.4.js
@@ -0,0 +1,26 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T1.4.js
+ * @description Either Type is not Reference or GetBase is not null, check opeartor is "x += y"
+ */
+
+//CHECK#1
+var x = 1;
+var z = (x += 1);
+if (z !== 2) {
+  $ERROR('#1: var x = 1; var z = (x += 1); z === 2. Actual: ' + (z));
+}
+
+//CHECK#2
+var x = 1;
+var y = 1;
+var z = (x += y);
+if (z !== 2) {
+  $ERROR('#2: var x = 1; var y = 1; var z = (x += y); z === 2. Actual: ' + (z));
+}
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.5.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.5.js
new file mode 100644
index 000000000..db68d5585
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.5.js
@@ -0,0 +1,26 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T1.5.js
+ * @description Either Type is not Reference or GetBase is not null, check opeartor is "x -= y"
+ */
+
+//CHECK#1
+var x = 1;
+var z = (x -= 1);
+if (z !== 0) {
+  $ERROR('#1: var x = 1; var z = (x -= 1); z === 0. Actual: ' + (z));
+}
+
+//CHECK#2
+var x = 1;
+var y = 1;
+var z = (x -= y);
+if (z !== 0) {
+  $ERROR('#2: var x = 1; var y = 1; var z = (x -= y); z === 0. Actual: ' + (z));
+}
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.6.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.6.js
new file mode 100644
index 000000000..f6f5ac7ca
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.6.js
@@ -0,0 +1,26 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T1.6.js
+ * @description Either Type is not Reference or GetBase is not null, check opeartor is "x <<= y"
+ */
+
+//CHECK#1
+var x = 1;
+var z = (x <<= 1);
+if (z !== 2) {
+  $ERROR('#1: var x = 1; var z = (x <<= 1); z === 2. Actual: ' + (z));
+}
+
+//CHECK#2
+var x = 1;
+var y = 1;
+var z = (x <<= y);
+if (z !== 2) {
+  $ERROR('#2: var x = 1; var y = 1; var z = (x <<= y); z === 2. Actual: ' + (z));
+}
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.7.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.7.js
new file mode 100644
index 000000000..cdc37d9ba
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.7.js
@@ -0,0 +1,26 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T1.7.js
+ * @description Either Type is not Reference or GetBase is not null, check opeartor is "x >>= y"
+ */
+
+//CHECK#1
+var x = 4;
+var z = (x >>= 1);
+if (z !== 2) {
+  $ERROR('#1: var x = 4; var z = (x >>= 1); z === 2. Actual: ' + (z));
+}
+
+//CHECK#2
+var x = 4;
+var y = 1;
+var z = (x >>= y);
+if (z !== 2) {
+  $ERROR('#2: var x = 4; var y = 1; var z = (x >>= y); z === 2. Actual: ' + (z));
+}
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.8.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.8.js
new file mode 100644
index 000000000..e53d41a51
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.8.js
@@ -0,0 +1,26 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T1.8.js
+ * @description Either Type is not Reference or GetBase is not null, check opeartor is "x >>>= y"
+ */
+
+//CHECK#1
+var x = 4;
+var z = (x >>>= 1);
+if (z !== 2) {
+  $ERROR('#1: var x = 4; var z = (x >>>= 1); z === 2. Actual: ' + (z));
+}
+
+//CHECK#2
+var x = 4;
+var y = 1;
+var z = (x >>>= y);
+if (z !== 2) {
+  $ERROR('#2: var x = 4; var y = 1; var z = (x >>>= y); z === 2. Actual: ' + (z));
+}
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.9.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.9.js
new file mode 100644
index 000000000..a74dee97d
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T1.9.js
@@ -0,0 +1,26 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T1.9.js
+ * @description Either Type is not Reference or GetBase is not null, check opeartor is "x &= y"
+ */
+
+//CHECK#1
+var x = 1;
+var z = (x &= 1);
+if (z !== 1) {
+  $ERROR('#1: var x = 1; var z = (x &= 1); z === 1. Actual: ' + (z));
+}
+
+//CHECK#2
+var x = 1;
+var y = 1;
+var z = (x &= y);
+if (z !== 1) {
+  $ERROR('#2: var x = 1; var y = 1; var z = (x &= y); z === 1. Actual: ' + (z));
+}
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.1.js
new file mode 100644
index 000000000..eede73f3d
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.1.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T2.1.js
+ * @description If GetBase(AssigmentExpression) is null, throw ReferenceError. Check operator is "x *= y"
+ */
+
+//CHECK#1
+try {
+  var x = 1;
+  var z = (x *= y);
+  $ERROR('#1.1: var x = 1; x *= y throw ReferenceError. Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: var x = 1; x *= y throw ReferenceError. Actual: ' + (e));  
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.10.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.10.js
new file mode 100644
index 000000000..27c243325
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.10.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T2.10.js
+ * @description If GetBase(AssigmentExpression) is null, throw ReferenceError. Check operator is "x ^= y"
+ */
+
+//CHECK#1
+try {
+  var x = 1;
+  var z = (x ^= y);
+  $ERROR('#1.1: var x = 1; x ^= y throw ReferenceError. Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: var x = 1; x ^= y throw ReferenceError. Actual: ' + (e));  
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.11.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.11.js
new file mode 100644
index 000000000..22cd6c1b8
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.11.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T2.11.js
+ * @description If GetBase(AssigmentExpression) is null, throw ReferenceError. Check operator is "x |= y"
+ */
+
+//CHECK#1
+try {
+  var x = 1;
+  var z = (x |= y);
+  $ERROR('#1.1: var x = 1; x |= y throw ReferenceError. Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: var x = 1; x |= y throw ReferenceError. Actual: ' + (e));  
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.2.js
new file mode 100644
index 000000000..02a39f6c4
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.2.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T2.2.js
+ * @description If GetBase(AssigmentExpression) is null, throw ReferenceError. Check operator is "x /= y"
+ */
+
+//CHECK#1
+try {
+  var x = 1;
+  var z = (x /= y);
+  $ERROR('#1.1: var x = 1; x /= y throw ReferenceError. Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: var x = 1; x /= y throw ReferenceError. Actual: ' + (e));  
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.3.js
new file mode 100644
index 000000000..1d11d3bce
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T2.3.js
+ * @description If GetBase(AssigmentExpression) is null, throw ReferenceError. Check operator is "x %= y"
+ */
+
+//CHECK#1
+try {
+  var x = 1;
+  var z = (x %= y);
+  $ERROR('#1.1: var x = 1; x %= y throw ReferenceError. Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: var x = 1; x %= y throw ReferenceError. Actual: ' + (e));  
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.4.js
new file mode 100644
index 000000000..771302777
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.4.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T2.4.js
+ * @description If GetBase(AssigmentExpression) is null, throw ReferenceError. Check operator is "x += y"
+ */
+
+//CHECK#1
+try {
+  var x = 1;
+  var z = (x += y);
+  $ERROR('#1.1: var x = 1; x += y throw ReferenceError. Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: var x = 1; x += y throw ReferenceError. Actual: ' + (e));  
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.5.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.5.js
new file mode 100644
index 000000000..500e5e6a9
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.5.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T2.5.js
+ * @description If GetBase(AssigmentExpression) is null, throw ReferenceError. Check operator is "x -= y"
+ */
+
+//CHECK#1
+try {
+  var x = 1;
+  var z = (x -= y);
+  $ERROR('#1.1: var x = 1; x -= y throw ReferenceError. Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: var x = 1; x -= y throw ReferenceError. Actual: ' + (e));  
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.6.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.6.js
new file mode 100644
index 000000000..9042f94bb
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.6.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T2.6.js
+ * @description If GetBase(AssigmentExpression) is null, throw ReferenceError. Check operator is "x <<= y"
+ */
+
+//CHECK#1
+try {
+  var x = 1;
+  var z = (x <<= y);
+  $ERROR('#1.1: var x = 1; x <<= y throw ReferenceError. Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: var x = 1; x <<= y throw ReferenceError. Actual: ' + (e));  
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.7.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.7.js
new file mode 100644
index 000000000..8c391557e
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.7.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T2.7.js
+ * @description If GetBase(AssigmentExpression) is null, throw ReferenceError. Check operator is "x >>= y"
+ */
+
+//CHECK#1
+try {
+  var x = 1;
+  var z = (x >>= y);
+  $ERROR('#1.1: var x = 1; x >>= y throw ReferenceError. Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: var x = 1; x >>= y throw ReferenceError. Actual: ' + (e));  
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.8.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.8.js
new file mode 100644
index 000000000..8db8963a9
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.8.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T2.8.js
+ * @description If GetBase(AssigmentExpression) is null, throw ReferenceError. Check operator is "x >>>= y"
+ */
+
+//CHECK#1
+try {
+  var x = 1;
+  var z = (x >>>= y);
+  $ERROR('#1.1: var x = 1; x >>>= y throw ReferenceError. Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: var x = 1; x >>>= y throw ReferenceError. Actual: ' + (e));  
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.9.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.9.js
new file mode 100644
index 000000000..a9155a34e
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T2.9.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T2.9.js
+ * @description If GetBase(AssigmentExpression) is null, throw ReferenceError. Check operator is "x &= y"
+ */
+
+//CHECK#1
+try {
+  var x = 1;
+  var z = (x &= y);
+  $ERROR('#1.1: var x = 1; x &= y throw ReferenceError. Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: var x = 1; x &= y throw ReferenceError. Actual: ' + (e));  
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.1.js
new file mode 100644
index 000000000..247f69ebc
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T3.1.js
+ * @description If GetBase(LeftHandSideExpression) is null, throw ReferenceError. Check operator is "x *= y"
+ */
+
+//CHECK#1
+try {
+  var z = (x *= 1);
+  $ERROR('#1.1: x *= 1 throw ReferenceError. Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: x *= 1 throw ReferenceError. Actual: ' + (e));  
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.10.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.10.js
new file mode 100644
index 000000000..2c8495ca8
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.10.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T3.10.js
+ * @description If GetBase(LeftHandSideExpression) is null, throw ReferenceError. Check operator is "x ^= y"
+ */
+
+//CHECK#1
+try {
+  var z = (x ^= 1);
+  $ERROR('#1.1: x ^= 1 throw ReferenceError. Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: x ^= 1 throw ReferenceError. Actual: ' + (e));  
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.11.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.11.js
new file mode 100644
index 000000000..9901b9db1
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.11.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T3.11.js
+ * @description If GetBase(LeftHandSideExpression) is null, throw ReferenceError. Check operator is "x |= y"
+ */
+
+//CHECK#1
+try {
+  var z = (x |= 1);
+  $ERROR('#1.1: x |= 1 throw ReferenceError. Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: x |= 1 throw ReferenceError. Actual: ' + (e));  
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.2.js
new file mode 100644
index 000000000..6832765ef
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.2.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T3.2.js
+ * @description If GetBase(LeftHandSideExpression) is null, throw ReferenceError. Check operator is "x /= y"
+ */
+
+//CHECK#1
+try {
+  var z = (x /= 1);
+  $ERROR('#1.1: x /= 1 throw ReferenceError. Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: x /= 1 throw ReferenceError. Actual: ' + (e));  
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.3.js
new file mode 100644
index 000000000..dc0df0e52
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.3.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T3.3.js
+ * @description If GetBase(LeftHandSideExpression) is null, throw ReferenceError. Check operator is "x %= y"
+ */
+
+//CHECK#1
+try {
+  var z = (x %= 1);
+  $ERROR('#1.1: x %= 1 throw ReferenceError. Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: x %= 1 throw ReferenceError. Actual: ' + (e));  
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.4.js
new file mode 100644
index 000000000..a32957d99
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.4.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T3.4.js
+ * @description If GetBase(LeftHandSideExpression) is null, throw ReferenceError. Check operator is "x += y"
+ */
+
+//CHECK#1
+try {
+  var z = (x += 1);
+  $ERROR('#1.1: x += 1 throw ReferenceError. Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: x += 1 throw ReferenceError. Actual: ' + (e));  
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.5.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.5.js
new file mode 100644
index 000000000..7e8f4601d
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.5.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T3.5.js
+ * @description If GetBase(LeftHandSideExpression) is null, throw ReferenceError. Check operator is "x -= y"
+ */
+
+//CHECK#1
+try {
+  var z = (x -= 1);
+  $ERROR('#1.1: x -= 1 throw ReferenceError. Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: x -= 1 throw ReferenceError. Actual: ' + (e));  
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.6.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.6.js
new file mode 100644
index 000000000..0c1d107bd
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.6.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T3.6.js
+ * @description If GetBase(LeftHandSideExpression) is null, throw ReferenceError. Check operator is "x <<= y"
+ */
+
+//CHECK#1
+try {
+  var z = (x <<= 1);
+  $ERROR('#1.1: x <<= 1 throw ReferenceError. Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: x <<= 1 throw ReferenceError. Actual: ' + (e));  
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.7.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.7.js
new file mode 100644
index 000000000..0fd60d869
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.7.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T3.7.js
+ * @description If GetBase(LeftHandSideExpression) is null, throw ReferenceError. Check operator is "x >>= y"
+ */
+
+//CHECK#1
+try {
+  var z = (x >>= 1);
+  $ERROR('#1.1: x >>= 1 throw ReferenceError. Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: x >>= 1 throw ReferenceError. Actual: ' + (e));  
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.8.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.8.js
new file mode 100644
index 000000000..57259d1da
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.8.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T3.8.js
+ * @description If GetBase(LeftHandSideExpression) is null, throw ReferenceError. Check operator is "x >>>= y"
+ */
+
+//CHECK#1
+try {
+  var z = (x >>>= 1);
+  $ERROR('#1.1: x >>>= 1 throw ReferenceError. Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: x >>>= 1 throw ReferenceError. Actual: ' + (e));  
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.9.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.9.js
new file mode 100644
index 000000000..eac242da4
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.1_T3.9.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses GetValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.1_T3.9.js
+ * @description If GetBase(LeftHandSideExpression) is null, throw ReferenceError. Check operator is "x &= y"
+ */
+
+//CHECK#1
+try {
+  var z = (x &= 1);
+  $ERROR('#1.1: x &= 1 throw ReferenceError. Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: x &= 1 throw ReferenceError. Actual: ' + (e));  
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T1.js
new file mode 100644
index 000000000..d9ce71a56
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses PutValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.2_T1.js
+ * @description If Type(LeftHandSideExpression) is not Reference, throw ReferenceError (or SyntaxError). Check operator is "x *= y"
+ * @negative
+ */
+
+//CHECK#1
+try {
+  var z = (1 *= 1);
+  $ERROR('#1.1: 1 *= 1 throw ReferenceError (or SyntaxError). Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: 1 *= 1 throw ReferenceError (or SyntaxError). Actual: ' + (e));  
+  } else {
+    var z = (1 *= 1);
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T10.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T10.js
new file mode 100644
index 000000000..38c494279
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T10.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses PutValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.2_T10.js
+ * @description If Type(LeftHandSideExpression) is not Reference, throw ReferenceError (or SyntaxError). Check operator is "x ^= y"
+ * @negative
+ */
+
+//CHECK#1
+try {
+  var z = (1 ^= 1);
+  $ERROR('#1.1: 1 ^= 1 throw ReferenceError (or SyntaxError). Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: 1 ^= 1 throw ReferenceError (or SyntaxError). Actual: ' + (e));  
+  } else {
+    var z = (1 ^= 1);
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T11.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T11.js
new file mode 100644
index 000000000..45c162f86
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T11.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses PutValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.2_T11.js
+ * @description If Type(LeftHandSideExpression) is not Reference, throw ReferenceError (or SyntaxError). Check operator is "x |= y"
+ * @negative
+ */
+
+//CHECK#1
+try {
+  var z = (1 |= 1);
+  $ERROR('#1.1: 1 |= 1 throw ReferenceError (or SyntaxError). Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: 1 |= 1 throw ReferenceError (or SyntaxError). Actual: ' + (e));  
+  } else {
+    var z = (1 |= 1);
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T2.js
new file mode 100644
index 000000000..7ba092e88
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses PutValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.2_T2.js
+ * @description If Type(LeftHandSideExpression) is not Reference, throw ReferenceError (or SyntaxError). Check operator is "x /= y"
+ * @negative
+ */
+
+//CHECK#1
+try {
+  var z = (1 /= 1);
+  $ERROR('#1.1: 1 /= 1 throw ReferenceError (or SyntaxError). Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: 1 /= 1 throw ReferenceError (or SyntaxError). Actual: ' + (e));  
+  } else {
+    var z = (1 /= 1);
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T3.js
new file mode 100644
index 000000000..c26da6dd4
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T3.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses PutValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.2_T3.js
+ * @description If Type(LeftHandSideExpression) is not Reference, throw ReferenceError (or SyntaxError). Check operator is "x %= y"
+ * @negative
+ */
+
+//CHECK#1
+try {
+  var z = (1 %= 1);
+  $ERROR('#1.1: 1 %= 1 throw ReferenceError (or SyntaxError). Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: 1 %= 1 throw ReferenceError (or SyntaxError). Actual: ' + (e));  
+  } else {
+    var z = (1 %= 1);
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T4.js
new file mode 100644
index 000000000..bbfbd0f41
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T4.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses PutValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.2_T4.js
+ * @description If Type(LeftHandSideExpression) is not Reference, throw ReferenceError (or SyntaxError). Check operator is "x += y"
+ * @negative
+ */
+
+//CHECK#1
+try {
+  var z = (1 += 1);
+  $ERROR('#1.1: 1 += 1 throw ReferenceError (or SyntaxError). Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: 1 += 1 throw ReferenceError (or SyntaxError). Actual: ' + (e));  
+  } else {
+    var z = (1 += 1);
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T5.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T5.js
new file mode 100644
index 000000000..d9a53ecaf
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T5.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses PutValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.2_T5.js
+ * @description If Type(LeftHandSideExpression) is not Reference, throw ReferenceError (or SyntaxError). Check operator is "x -= y"
+ * @negative
+ */
+
+//CHECK#1
+try {
+  var z = (1 -= 1);
+  $ERROR('#1.1: 1 -= 1 throw ReferenceError (or SyntaxError). Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: 1 -= 1 throw ReferenceError (or SyntaxError). Actual: ' + (e));  
+  } else {
+    var z = (1 -= 1);
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T6.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T6.js
new file mode 100644
index 000000000..34154341d
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T6.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses PutValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.2_T6.js
+ * @description If Type(LeftHandSideExpression) is not Reference, throw ReferenceError (or SyntaxError). Check operator is "x <<= y"
+ * @negative
+ */
+
+//CHECK#1
+try {
+  var z = (1 <<= 1);
+  $ERROR('#1.1: 1 <<= 1 throw ReferenceError (or SyntaxError). Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: 1 <<= 1 throw ReferenceError (or SyntaxError). Actual: ' + (e));  
+  } else {
+    var z = (1 <<= 1);
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T7.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T7.js
new file mode 100644
index 000000000..6f0e3fd4d
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T7.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses PutValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.2_T7.js
+ * @description If Type(LeftHandSideExpression) is not Reference, throw ReferenceError (or SyntaxError). Check operator is "x >>= y"
+ * @negative
+ */
+
+//CHECK#1
+try {
+  var z = (1 >>= 1);
+  $ERROR('#1.1: 1 >>= 1 throw ReferenceError (or SyntaxError). Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: 1 >>= 1 throw ReferenceError (or SyntaxError). Actual: ' + (e));  
+  } else {
+    var z = (1 >>= 1);
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T8.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T8.js
new file mode 100644
index 000000000..d82235391
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T8.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses PutValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.2_T8.js
+ * @description If Type(LeftHandSideExpression) is not Reference, throw ReferenceError (or SyntaxError). Check operator is "x >>>= y"
+ * @negative
+ */
+
+//CHECK#1
+try {
+  var z = (1 >>>= 1);
+  $ERROR('#1.1: 1 >>>= 1 throw ReferenceError (or SyntaxError). Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: 1 >>>= 1 throw ReferenceError (or SyntaxError). Actual: ' + (e));  
+  } else {
+    var z = (1 >>>= 1);
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T9.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T9.js
new file mode 100644
index 000000000..f85aa27dd
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A2.2_T9.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator uses PutValue
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A2.2_T9.js
+ * @description If Type(LeftHandSideExpression) is not Reference, throw ReferenceError (or SyntaxError). Check operator is "x &= y"
+ * @negative
+ */
+
+//CHECK#1
+try {
+  var z = (1 &= 1);
+  $ERROR('#1.1: 1 &= 1 throw ReferenceError (or SyntaxError). Actual: ' + (z));  
+}
+catch (e) {
+  if ((e instanceof ReferenceError) !== true) {
+    $ERROR('#1.2: 1 &= 1 throw ReferenceError (or SyntaxError). Actual: ' + (e));  
+  } else {
+    var z = (1 &= 1);
+  }
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T1.js
new file mode 100644
index 000000000..a50a1cba5
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x @= y uses PutValue(x, x @ y)
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A3.1_T1.js
+ * @description Checking Expression and Variable statements for x *= y
+ */
+
+//CHECK#1
+var x = 1;
+x *= -1; 
+if (x !== -1) {
+  $ERROR('#1: var x = 1; x *= -1; x === -1. Actual: ' + (x));
+}
+
+//CHECK#2
+y = 1;
+y *= -1;
+if (y !== -1) {
+  $ERROR('#2: y = 1; y *= -1; y === -1. Actual: ' + (y));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T10.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T10.js
new file mode 100644
index 000000000..a552f7d08
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T10.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x @= y uses PutValue(x, x @ y)
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A3.1_T10.js
+ * @description Checking Expression and Variable statements for x ^= y
+ */
+
+//CHECK#1
+var x = 0;
+x ^= 1; 
+if (x !== 1) {
+  $ERROR('#1: var x = 0; x ^= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+y = 1;
+y ^= 0;
+if (y !== 1) {
+  $ERROR('#2: y = 1; y ^= 0; y === 1. Actual: ' + (y));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T11.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T11.js
new file mode 100644
index 000000000..6bacd0744
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T11.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x @= y uses PutValue(x, x @ y)
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A3.1_T11.js
+ * @description Checking Expression and Variable statements for x |= y
+ */
+
+//CHECK#1
+var x = 0;
+x |= 1; 
+if (x !== 1) {
+  $ERROR('#1: var x = 0; x |= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+y = 1;
+y |= 0;
+if (y !== 1) {
+  $ERROR('#2: y = 1; y |= 0; y === 1. Actual: ' + (y));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T2.js
new file mode 100644
index 000000000..2b07ad143
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x @= y uses PutValue(x, x @ y)
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A3.1_T2.js
+ * @description Checking Expression and Variable statements for x /= y
+ */
+
+//CHECK#1
+var x = 1;
+x /= -1; 
+if (x !== -1) {
+  $ERROR('#1: var x = 1; x /= -1; x === -1. Actual: ' + (x));
+}
+
+//CHECK#2
+y = 1;
+y /= -1;
+if (y !== -1) {
+  $ERROR('#2: y = 1; y /= -1; y === -1. Actual: ' + (y));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T3.js
new file mode 100644
index 000000000..74ca601ac
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T3.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x @= y uses PutValue(x, x @ y)
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A3.1_T3.js
+ * @description Checking Expression and Variable statements for x %= y
+ */
+
+//CHECK#1
+var x = -1;
+x %= 2; 
+if (x !== -1) {
+  $ERROR('#1: var x = -1; x %= 2; x === -1. Actual: ' + (x));
+}
+
+//CHECK#2
+y = -1;
+y %= 2;
+if (y !== -1) {
+  $ERROR('#2: y = -1; y %= 2; y === -1. Actual: ' + (y));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T4.js
new file mode 100644
index 000000000..b97dce0b0
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T4.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x @= y uses PutValue(x, x @ y)
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A3.1_T4.js
+ * @description Checking Expression and Variable statements for x += y
+ */
+
+//CHECK#1
+var x = 1;
+x += 1; 
+if (x !== 2) {
+  $ERROR('#1: var x = 1; x += 1; x === 2. Actual: ' + (x));
+}
+
+//CHECK#2
+y = 1;
+y += 1;
+if (y !== 2) {
+  $ERROR('#2: y = 1; y += 1; y === 2. Actual: ' + (y));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T5.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T5.js
new file mode 100644
index 000000000..266953269
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T5.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x @= y uses PutValue(x, x @ y)
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A3.1_T5.js
+ * @description Checking Expression and Variable statements for x -= y
+ */
+
+//CHECK#1
+var x = -1;
+x -= 1; 
+if (x !== -2) {
+  $ERROR('#1: var x = -1; x -= 1; x === -2. Actual: ' + (x));
+}
+
+//CHECK#2
+y = -1;
+y -= 1;
+if (y !== -2) {
+  $ERROR('#2: y = -1; y -= 1; y === -2. Actual: ' + (y));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T6.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T6.js
new file mode 100644
index 000000000..08aac7981
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T6.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x @= y uses PutValue(x, x @ y)
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A3.1_T6.js
+ * @description Checking Expression and Variable statements for x <<= y
+ */
+
+//CHECK#1
+var x = 1;
+x <<= 1; 
+if (x !== 2) {
+  $ERROR('#1: var x = 1; x <<= 1; x === 2. Actual: ' + (x));
+}
+
+//CHECK#2
+y = 1;
+y <<= 1;
+if (y !== 2) {
+  $ERROR('#2: y = 1; y <<= 1; y === 2. Actual: ' + (y));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T7.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T7.js
new file mode 100644
index 000000000..b2102b2b8
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T7.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x @= y uses PutValue(x, x @ y)
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A3.1_T7.js
+ * @description Checking Expression and Variable statements for x >>= y
+ */
+
+//CHECK#1
+var x = 4;
+x >>= 1; 
+if (x !== 2) {
+  $ERROR('#1: var x = 4; x >>= 1; x === 2. Actual: ' + (x));
+}
+
+//CHECK#2
+y = 4;
+y >>= 1;
+if (y !== 2) {
+  $ERROR('#2: y = 4; y >>= 1; y === 2. Actual: ' + (y));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T8.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T8.js
new file mode 100644
index 000000000..7a7dbc7f6
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T8.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x @= y uses PutValue(x, x @ y)
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A3.1_T8.js
+ * @description Checking Expression and Variable statements for x >>>= y
+ */
+
+//CHECK#1
+var x = 4;
+x >>>= 1; 
+if (x !== 2) {
+  $ERROR('#1: var x = 4; x >>>= 1; x === 2. Actual: ' + (x));
+}
+
+//CHECK#2
+y = 4;
+y >>>= 1;
+if (y !== 2) {
+  $ERROR('#2: y = 4; y >>>= 1; y === 2. Actual: ' + (y));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T9.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T9.js
new file mode 100644
index 000000000..8e1408df5
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.1_T9.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x @= y uses PutValue(x, x @ y)
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A3.1_T9.js
+ * @description Checking Expression and Variable statements for x &= y
+ */
+
+//CHECK#1
+var x = 1;
+x &= 1; 
+if (x !== 1) {
+  $ERROR('#1: var x = 1; x &= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+y = 1;
+y &= 1;
+if (y !== 1) {
+  $ERROR('#2: y = 1; y &= 1; y === 1. Actual: ' + (y));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T1.js
new file mode 100644
index 000000000..8a092bea6
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x @= y returns x @ y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A3.2_T1.js
+ * @description Checking Expression and Variable statements for x *= y
+ */
+
+//CHECK#1
+var x = 1;
+var x1 = (x *= -1);
+if (x1 !== -1) {
+  $ERROR('#1: var x = 1; var x1 = (x *= -1); x1 === -1. Actual: ' + (x1));
+}
+
+//CHECK#2
+y = 1;
+y1 = (y *= -1);
+if (y1 !== -1) {
+  $ERROR('#2: y = 1; y1 = (y *= -1); y1 === -1. Actual: ' + (y1));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T10.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T10.js
new file mode 100644
index 000000000..26de3f6ed
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T10.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x @= y returns x @ y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A3.2_T10.js
+ * @description Checking Expression and Variable statements for x ^= y
+ */
+
+//CHECK#1
+var x = 0;
+var x1 = (x ^= 1);
+if (x1 !== 1) {
+  $ERROR('#1: var x = 0; var x1 = (x ^= 1); x1 === 1. Actual: ' + (x1));
+}
+
+//CHECK#2
+y = 1;
+y1 = (y ^= 0);
+if (y1 !== 1) {
+  $ERROR('#2: y = 1; y1 = (y ^= 0); y1 === 1. Actual: ' + (y1));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T11.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T11.js
new file mode 100644
index 000000000..e9c1ed403
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T11.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x @= y returns x @ y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A3.2_T11.js
+ * @description Checking Expression and Variable statements for x |= y
+ */
+
+//CHECK#1
+var x = 0;
+var x1 = (x |= 1);
+if (x1 !== 1) {
+  $ERROR('#1: var x = 0; var x1 = (x |= 1); x1 === 1. Actual: ' + (x1));
+}
+
+//CHECK#2
+y = 1;
+y1 = (y |= 0);
+if (y1 !== 1) {
+  $ERROR('#2: y = 1; y1 = (y |= 0); y1 === 1. Actual: ' + (y1));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T2.js
new file mode 100644
index 000000000..8de215e0f
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x @= y returns x @ y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A3.2_T2.js
+ * @description Checking Expression and Variable statements for x /= y
+ */
+
+//CHECK#1
+var x = 1;
+var x1 = (x /= -1);
+if (x1 !== -1) {
+  $ERROR('#1: var x = 1; var x1 = (x /= -1); x1 === -1. Actual: ' + (x1));
+}
+
+//CHECK#2
+y = 1;
+y1 = (y /= -1);
+if (y1 !== -1) {
+  $ERROR('#2: y = 1; y1 = (y /= -1); y1 === -1. Actual: ' + (y1));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T3.js
new file mode 100644
index 000000000..2e4853ae2
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T3.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x @= y returns x @ y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A3.2_T3.js
+ * @description Checking Expression and Variable statements for x %= y
+ */
+
+//CHECK#1
+var x = -1;
+var x1 = (x %= 2);
+if (x1 !== -1) {
+  $ERROR('#1: var x = -1; var x1 = (x %= 2); x1 === -1. Actual: ' + (x1));
+}
+
+//CHECK#2
+y = -1;
+y1 = (y %= 2);
+if (y1 !== -1) {
+  $ERROR('#2: y = -1; y1 = (y %= 2); y1 === -1. Actual: ' + (y1));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T4.js
new file mode 100644
index 000000000..8aa84317f
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T4.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x @= y returns x @ y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A3.2_T4.js
+ * @description Checking Expression and Variable statements for x += y
+ */
+
+//CHECK#1
+var x = 1;
+var x1 = (x += 1);
+if (x1 !== 2) {
+  $ERROR('#1: var x = 1; var x1 = (x += 1); x1 === 2. Actual: ' + (x1));
+}
+
+//CHECK#2
+y = 1;
+y1 = (y += 1);
+if (y1 !== 2) {
+  $ERROR('#2: y = 1; y1 = (y += 1); y1 === 2. Actual: ' + (y1));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T5.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T5.js
new file mode 100644
index 000000000..50ca35e71
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T5.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x @= y returns x @ y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A3.2_T5.js
+ * @description Checking Expression and Variable statements for x -= y
+ */
+
+//CHECK#1
+var x = -1;
+var x1 = (x -= 1);
+if (x1 !== -2) {
+  $ERROR('#1: var x = -1; var x1 = (x -= 1); x1 === -2. Actual: ' + (x1));
+}
+
+//CHECK#2
+y = -1;
+y1 = (y -= 1);
+if (y1 !== -2) {
+  $ERROR('#2: y = -1; y1 = (y -= 1); y1 === -2. Actual: ' + (y1));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T6.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T6.js
new file mode 100644
index 000000000..250be77af
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T6.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x @= y returns x @ y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A3.2_T6.js
+ * @description Checking Expression and Variable statements for x <<= y
+ */
+
+//CHECK#1
+var x = 1;
+var x1 = (x <<= 1);
+if (x1 !== 2) {
+  $ERROR('#1: var x = 1; var x1 = (x <<= 1); x1 === 2. Actual: ' + (x1));
+}
+
+//CHECK#2
+y = 1;
+y1 = (y <<= 1);
+if (y1 !== 2) {
+  $ERROR('#2: y = 1; y1 = (y <<= 1); y1 === 2. Actual: ' + (y1));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T7.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T7.js
new file mode 100644
index 000000000..d37cce498
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T7.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x @= y returns x @ y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A3.2_T7.js
+ * @description Checking Expression and Variable statements for x >>= y
+ */
+
+//CHECK#1
+var x = 4;
+var x1 = (x >>= 1);
+if (x1 !== 2) {
+  $ERROR('#1: var x = 4; var x1 = (x >>= 1); x1 === 2. Actual: ' + (x1));
+}
+
+//CHECK#2
+y = 4;
+y1 = (y >>= 1);
+if (y1 !== 2) {
+  $ERROR('#2: y = 4; y1 = (y >>= 1); y1 === 2. Actual: ' + (y1));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T8.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T8.js
new file mode 100644
index 000000000..f636cbfe5
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T8.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x @= y returns x @ y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A3.2_T8.js
+ * @description Checking Expression and Variable statements for x >>>= y
+ */
+
+//CHECK#1
+var x = 4;
+var x1 = (x >>>= 1);
+if (x1 !== 2) {
+  $ERROR('#1: var x = 4; var x1 = (x >>>= 1); x1 === 2. Actual: ' + (x1));
+}
+
+//CHECK#2
+y = 4;
+y1 = (y >>>= 1);
+if (y1 !== 2) {
+  $ERROR('#2: y = 4; y1 = (y >>>= 1); y1 === 2. Actual: ' + (y1));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T9.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T9.js
new file mode 100644
index 000000000..de09e1fd5
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A3.2_T9.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * Operator x @= y returns x @ y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A3.2_T9.js
+ * @description Checking Expression and Variable statements for x &= y
+ */
+
+//CHECK#1
+var x = 1;
+var x1 = (x &= 1);
+if (x1 !== 1) {
+  $ERROR('#1: var x = 1; var x1 = (x &= 1); x1 === 1. Actual: ' + (x1));
+}
+
+//CHECK#2
+y = 1;
+y1 = (y &= 1);
+if (y1 !== 1) {
+  $ERROR('#2: y = 1; y1 = (y &= 1); y1 === 1. Actual: ' + (y1));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T1.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T1.1.js
new file mode 100644
index 000000000..e9b0ee0c4
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T1.1.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x ^= y is the same as x = x ^ y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.10_T1.1.js
+ * @description Type(x) and Type(y) vary between primitive boolean and Boolean object
+ */
+
+//CHECK#1
+x = true;
+x ^= true;
+if (x !== 0) {
+  $ERROR('#1: x = true; x ^= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new Boolean(true);
+x ^= true;
+if (x !== 0) {
+  $ERROR('#2: x = new Boolean(true); x ^= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = true;
+x ^= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#3: x = true; x ^= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new Boolean(true);
+x ^= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = new Boolean(true); x ^= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T1.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T1.2.js
new file mode 100644
index 000000000..28a622e5b
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T1.2.js
@@ -0,0 +1,39 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x ^= y is the same as x = x ^ y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.10_T1.2.js
+ * @description Type(x) and Type(y) vary between primitive number and Number object
+ */
+
+//CHECK#1
+x = 1;
+x ^= 1;
+if (x !== 0) {
+  $ERROR('#1: x = 1; x ^= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new Number(1);
+x ^= 1;
+if (x !== 0) {
+  $ERROR('#2: x = new Number(1); x ^= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = 1;
+x ^= new Number(1);
+if (x !== 0) {
+  $ERROR('#3: x = 1; x ^= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new Number(1);
+x ^= new Number(1);
+if (x !== 0) {
+  $ERROR('#4: x = new Number(1); x ^= new Number(1); x === 0. Actual: ' + (x));
+}
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T1.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T1.3.js
new file mode 100644
index 000000000..bfaec704b
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T1.3.js
@@ -0,0 +1,52 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x ^= y is the same as x = x ^ y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.10_T1.3.js
+ * @description Type(x) and Type(y) vary between primitive string and String object
+ */
+
+//CHECK#1
+x = "1";
+x ^= "1";
+if (x !== 0) {
+  $ERROR('#1: x = "1"; x ^= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new String("1");
+x ^= "1";
+if (x !== 0) {
+  $ERROR('#2: x = new String("1"); x ^= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = "1";
+x ^= new String("1");
+if (x !== 0) {
+  $ERROR('#3: x = "1"; x ^= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new String("1");
+x ^= new String("1");
+if (x !== 0) {
+  $ERROR('#4: x = new String("1"); x ^= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#5
+x = "x";
+x ^= "1";
+if (x !== 1) {
+  $ERROR('#5: x = "x"; x ^= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#6
+x = "1";
+x ^= "x";
+if (x !== 1) {
+  $ERROR('#6: x = "1"; x ^= "x"; x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T1.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T1.4.js
new file mode 100644
index 000000000..03b9f63e5
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T1.4.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x ^= y is the same as x = x ^ y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.10_T1.4.js
+ * @description Type(x) and Type(y) vary between Null and Undefined
+ */
+
+//CHECK#1
+x = null;
+x ^= undefined;
+if (x !== 0) {
+  $ERROR('#1: x = null; x ^= undefined; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x ^= null;
+if (x !== 0) {
+  $ERROR('#2: x = undefined; x ^= null; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = undefined;
+x ^= undefined;
+if (x !== 0) {
+  $ERROR('#3: x = undefined; x ^= undefined; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x ^= null;
+if (x !== 0) {
+  $ERROR('#4: x = null; x ^= null; x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.1.js
new file mode 100644
index 000000000..82f176291
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.1.js
@@ -0,0 +1,66 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x ^= y is the same as x = x ^ y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.10_T2.1.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Boolean (primitive and object)
+ */
+
+//CHECK#1
+x = true;
+x ^= 1;
+if (x !== 0) {
+  $ERROR('#1: x = true; x ^= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = 1;
+x ^= true;
+if (x !== 0) {
+  $ERROR('#2: x = 1; x ^= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x ^= 1;
+if (x !== 0) {
+  $ERROR('#3: x = new Boolean(true); x ^= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = 1;
+x ^= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = 1; x ^= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
+//CHECK#5
+x = true;
+x ^= new Number(1);
+if (x !== 0) {
+  $ERROR('#5: x = true; x ^= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new Number(1);
+x ^= true;
+if (x !== 0) {
+  $ERROR('#6: x = new Number(1); x ^= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new Boolean(true);
+x ^= new Number(1);
+if (x !== 0) {
+  $ERROR('#7: x = new Boolean(true); x ^= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new Number(1);
+x ^= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#8: x = new Number(1); x ^= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.2.js
new file mode 100644
index 000000000..5b877f27a
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.2.js
@@ -0,0 +1,80 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x ^= y is the same as x = x ^ y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.10_T2.2.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and String (primitive and object)
+ */
+
+//CHECK#1
+x = "1";
+x ^= 1;
+if (x !== 0) {
+  $ERROR('#1: x = "1"; x ^= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = 1;
+x ^= "1";
+if (x !== 0) {
+  $ERROR('#2: x = 1; x ^= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x ^= 1;
+if (x !== 0) {
+  $ERROR('#3: x = new String("1"); x ^= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = 1;
+x ^= new String("1");
+if (x !== 0) {
+  $ERROR('#4: x = 1; x ^= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#5
+x = "1";
+x ^= new Number(1);
+if (x !== 0) {
+  $ERROR('#5: x = "1"; x ^= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new Number(1);
+x ^= "1";
+if (x !== 0) {
+  $ERROR('#6: x = new Number(1); x ^= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new String("1");
+x ^= new Number(1);
+if (x !== 0) {
+  $ERROR('#7: x = new String("1"); x ^= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new Number(1);
+x ^= new String("1");
+if (x !== 0) {
+  $ERROR('#8: x = new Number(1); x ^= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#9
+x = "x";
+x ^= 1;
+if (x !== 1) {
+  $ERROR('#9: x = "x"; x ^= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#10
+x = 1;
+x ^= "x";
+if (x !== 1) {
+  $ERROR('#10: x = 1; x ^= "x"; x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.3.js
new file mode 100644
index 000000000..a41eb8d6c
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.3.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x ^= y is the same as x = x ^ y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.10_T2.3.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Null
+ */
+
+//CHECK#1
+x = 1;
+x ^= null;
+if (x !== 1) {
+  $ERROR('#1: x = 1; x ^= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x ^= 1;
+if (x !== 1) {
+  $ERROR('#2: x = null; x ^= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Number(1);
+x ^= null;
+if (x !== 1) {
+  $ERROR('#3: x = new Number(1); x ^= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x ^= new Number(1);
+if (x !== 1) {
+  $ERROR('#4: x = null; x ^= new Number(1); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.4.js
new file mode 100644
index 000000000..666f20604
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.4.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x ^= y is the same as x = x ^ y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.10_T2.4.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = 1;
+x ^= undefined;
+if (x !== 1) {
+  $ERROR('#1: x = 1; x ^= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x ^= 1;
+if (x !== 1) {
+  $ERROR('#2: x = undefined; x ^= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Number(1);
+x ^= undefined;
+if (x !== 1) {
+  $ERROR('#3: x = new Number(1); x ^= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x ^= new Number(1);
+if (x !== 1) {
+  $ERROR('#4: x = undefined; x ^= new Number(1); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.5.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.5.js
new file mode 100644
index 000000000..aff6b25da
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.5.js
@@ -0,0 +1,66 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x ^= y is the same as x = x ^ y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.10_T2.5.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Boolean (primitive and object)
+ */
+
+//CHECK#1
+x = true;
+x ^= "1";
+if (x !== 0) {
+  $ERROR('#1: x = true; x ^= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = "1";
+x ^= true;
+if (x !== 0) {
+  $ERROR('#2: x = "1"; x ^= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x ^= "1";
+if (x !== 0) {
+  $ERROR('#3: x = new Boolean(true); x ^= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = "1";
+x ^= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = "1"; x ^= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
+//CHECK#5
+x = true;
+x ^= new String("1");
+if (x !== 0) {
+  $ERROR('#5: x = true; x ^= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new String("1");
+x ^= true;
+if (x !== 0) {
+  $ERROR('#6: x = new String("1"); x ^= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new Boolean(true);
+x ^= new String("1");
+if (x !== 0) {
+  $ERROR('#7: x = new Boolean(true); x ^= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new String("1");
+x ^= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#8: x = new String("1"); x ^= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.6.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.6.js
new file mode 100644
index 000000000..4b30cef36
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.6.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x ^= y is the same as x = x ^ y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.10_T2.6.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = "1";
+x ^= undefined;
+if (x !== 1) {
+  $ERROR('#1: x = "1"; x ^= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x ^= "1";
+if (x !== 1) {
+  $ERROR('#2: x = undefined; x ^= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x ^= undefined;
+if (x !== 1) {
+  $ERROR('#3: x = new String("1"); x ^= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x ^= new String("1");
+if (x !== 1) {
+  $ERROR('#4: x = undefined; x ^= new String("1"); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.7.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.7.js
new file mode 100644
index 000000000..880fb66ec
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.7.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x ^= y is the same as x = x ^ y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.10_T2.7.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Null
+ */
+
+//CHECK#1
+x = "1";
+x ^= null;
+if (x !== 1) {
+  $ERROR('#1: x = "1"; x ^= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x ^= "1";
+if (x !== 1) {
+  $ERROR('#2: x = null; x ^= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x ^= null;
+if (x !== 1) {
+  $ERROR('#3: x = new String("1"); x ^= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x ^= new String("1");
+if (x !== 1) {
+  $ERROR('#4: x = null; x ^= new String("1"); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.8.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.8.js
new file mode 100644
index 000000000..4e0e83855
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.8.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x ^= y is the same as x = x ^ y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.10_T2.8.js
+ * @description Type(x) is different from Type(y) and both types vary between Boolean (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = true;
+x ^= undefined;
+if (x !== 1) {
+  $ERROR('#1: x = true; x ^= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x ^= true;
+if (x !== 1) {
+  $ERROR('#2: x = undefined; x ^= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x ^= undefined;
+if (x !== 1) {
+  $ERROR('#3: x = new Boolean(true); x ^= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x ^= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#4: x = undefined; x ^= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.9.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.9.js
new file mode 100644
index 000000000..59a622d54
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.10_T2.9.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x ^= y is the same as x = x ^ y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.10_T2.9.js
+ * @description Type(x) is different from Type(y) and both types vary between Boolean (primitive or object) and Null
+ */
+
+//CHECK#1
+x = true;
+x ^= null;
+if (x !== 1) {
+  $ERROR('#1: x = true; x ^= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x ^= true;
+if (x !== 1) {
+  $ERROR('#2: x = null; x ^= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x ^= null;
+if (x !== 1) {
+  $ERROR('#3: x = new Boolean(true); x ^= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x ^= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#4: x = null; x ^= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T1.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T1.1.js
new file mode 100644
index 000000000..afc6d63cf
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T1.1.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x |= y is the same as x = x | y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.11_T1.1.js
+ * @description Type(x) and Type(y) vary between primitive boolean and Boolean object
+ */
+
+//CHECK#1
+x = true;
+x |= true;
+if (x !== 1) {
+  $ERROR('#1: x = true; x |= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new Boolean(true);
+x |= true;
+if (x !== 1) {
+  $ERROR('#2: x = new Boolean(true); x |= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = true;
+x |= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#3: x = true; x |= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new Boolean(true);
+x |= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#4: x = new Boolean(true); x |= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T1.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T1.2.js
new file mode 100644
index 000000000..24a4a8fa5
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T1.2.js
@@ -0,0 +1,39 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x |= y is the same as x = x | y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.11_T1.2.js
+ * @description Type(x) and Type(y) vary between primitive number and Number object
+ */
+
+//CHECK#1
+x = 1;
+x |= 1;
+if (x !== 1) {
+  $ERROR('#1: x = 1; x |= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new Number(1);
+x |= 1;
+if (x !== 1) {
+  $ERROR('#2: x = new Number(1); x |= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = 1;
+x |= new Number(1);
+if (x !== 1) {
+  $ERROR('#3: x = 1; x |= new Number(1); x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new Number(1);
+x |= new Number(1);
+if (x !== 1) {
+  $ERROR('#4: x = new Number(1); x |= new Number(1); x === 1. Actual: ' + (x));
+}
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T1.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T1.3.js
new file mode 100644
index 000000000..5e6ae229a
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T1.3.js
@@ -0,0 +1,52 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x |= y is the same as x = x | y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.11_T1.3.js
+ * @description Type(x) and Type(y) vary between primitive string and String object
+ */
+
+//CHECK#1
+x = "1";
+x |= "1";
+if (x !== 1) {
+  $ERROR('#1: x = "1"; x |= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new String("1");
+x |= "1";
+if (x !== 1) {
+  $ERROR('#2: x = new String("1"); x |= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = "1";
+x |= new String("1");
+if (x !== 1) {
+  $ERROR('#3: x = "1"; x |= new String("1"); x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new String("1");
+x |= new String("1");
+if (x !== 1) {
+  $ERROR('#4: x = new String("1"); x |= new String("1"); x === 1. Actual: ' + (x));
+}
+
+//CHECK#5
+x = "x";
+x |= "1";
+if (x !== 1) {
+  $ERROR('#5: x = "x"; x |= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#6
+x = "1";
+x |= "x";
+if (x !== 1) {
+  $ERROR('#6: x = "1"; x |= "x"; x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T1.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T1.4.js
new file mode 100644
index 000000000..2c16de058
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T1.4.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x |= y is the same as x = x | y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.11_T1.4.js
+ * @description Type(x) and Type(y) vary between Null and Undefined
+ */
+
+//CHECK#1
+x = null;
+x |= undefined;
+if (x !== 0) {
+  $ERROR('#1: x = null; x |= undefined; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x |= null;
+if (x !== 0) {
+  $ERROR('#2: x = undefined; x |= null; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = undefined;
+x |= undefined;
+if (x !== 0) {
+  $ERROR('#3: x = undefined; x |= undefined; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x |= null;
+if (x !== 0) {
+  $ERROR('#4: x = null; x |= null; x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.1.js
new file mode 100644
index 000000000..f764964f0
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.1.js
@@ -0,0 +1,66 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x |= y is the same as x = x | y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.11_T2.1.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Boolean (primitive and object)
+ */
+
+//CHECK#1
+x = true;
+x |= 1;
+if (x !== 1) {
+  $ERROR('#1: x = true; x |= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = 1;
+x |= true;
+if (x !== 1) {
+  $ERROR('#2: x = 1; x |= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x |= 1;
+if (x !== 1) {
+  $ERROR('#3: x = new Boolean(true); x |= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = 1;
+x |= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#4: x = 1; x |= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
+//CHECK#5
+x = true;
+x |= new Number(1);
+if (x !== 1) {
+  $ERROR('#5: x = true; x |= new Number(1); x === 1. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new Number(1);
+x |= true;
+if (x !== 1) {
+  $ERROR('#6: x = new Number(1); x |= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new Boolean(true);
+x |= new Number(1);
+if (x !== 1) {
+  $ERROR('#7: x = new Boolean(true); x |= new Number(1); x === 1. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new Number(1);
+x |= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#8: x = new Number(1); x |= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.2.js
new file mode 100644
index 000000000..46e183eb9
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.2.js
@@ -0,0 +1,80 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x |= y is the same as x = x | y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.11_T2.2.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and String (primitive and object)
+ */
+
+//CHECK#1
+x = "1";
+x |= 1;
+if (x !== 1) {
+  $ERROR('#1: x = "1"; x |= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = 1;
+x |= "1";
+if (x !== 1) {
+  $ERROR('#2: x = 1; x |= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x |= 1;
+if (x !== 1) {
+  $ERROR('#3: x = new String("1"); x |= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = 1;
+x |= new String("1");
+if (x !== 1) {
+  $ERROR('#4: x = 1; x |= new String("1"); x === 1. Actual: ' + (x));
+}
+
+//CHECK#5
+x = "1";
+x |= new Number(1);
+if (x !== 1) {
+  $ERROR('#5: x = "1"; x |= new Number(1); x === 1. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new Number(1);
+x |= "1";
+if (x !== 1) {
+  $ERROR('#6: x = new Number(1); x |= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new String("1");
+x |= new Number(1);
+if (x !== 1) {
+  $ERROR('#7: x = new String("1"); x |= new Number(1); x === 1. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new Number(1);
+x |= new String("1");
+if (x !== 1) {
+  $ERROR('#8: x = new Number(1); x |= new String("1"); x === 1. Actual: ' + (x));
+}
+
+//CHECK#9
+x = "x";
+x |= 1;
+if (x !== 1) {
+  $ERROR('#9: x = "x"; x |= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#10
+x = 1;
+x |= "x";
+if (x !== 1) {
+  $ERROR('#10: x = 1; x |= "x"; x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.3.js
new file mode 100644
index 000000000..070f1ecfe
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.3.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x |= y is the same as x = x | y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.11_T2.3.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Null
+ */
+
+//CHECK#1
+x = 1;
+x |= null;
+if (x !== 1) {
+  $ERROR('#1: x = 1; x |= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x |= 1;
+if (x !== 1) {
+  $ERROR('#2: x = null; x |= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Number(1);
+x |= null;
+if (x !== 1) {
+  $ERROR('#3: x = new Number(1); x |= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x |= new Number(1);
+if (x !== 1) {
+  $ERROR('#4: x = null; x |= new Number(1); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.4.js
new file mode 100644
index 000000000..e83610f36
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.4.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x |= y is the same as x = x | y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.11_T2.4.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = 1;
+x |= undefined;
+if (x !== 1) {
+  $ERROR('#1: x = 1; x |= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x |= 1;
+if (x !== 1) {
+  $ERROR('#2: x = undefined; x |= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Number(1);
+x |= undefined;
+if (x !== 1) {
+  $ERROR('#3: x = new Number(1); x |= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x |= new Number(1);
+if (x !== 1) {
+  $ERROR('#4: x = undefined; x |= new Number(1); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.5.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.5.js
new file mode 100644
index 000000000..0511f6674
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.5.js
@@ -0,0 +1,66 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x |= y is the same as x = x | y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.11_T2.5.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Boolean (primitive and object)
+ */
+
+//CHECK#1
+x = true;
+x |= "1";
+if (x !== 1) {
+  $ERROR('#1: x = true; x |= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = "1";
+x |= true;
+if (x !== 1) {
+  $ERROR('#2: x = "1"; x |= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x |= "1";
+if (x !== 1) {
+  $ERROR('#3: x = new Boolean(true); x |= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = "1";
+x |= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#4: x = "1"; x |= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
+//CHECK#5
+x = true;
+x |= new String("1");
+if (x !== 1) {
+  $ERROR('#5: x = true; x |= new String("1"); x === 1. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new String("1");
+x |= true;
+if (x !== 1) {
+  $ERROR('#6: x = new String("1"); x |= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new Boolean(true);
+x |= new String("1");
+if (x !== 1) {
+  $ERROR('#7: x = new Boolean(true); x |= new String("1"); x === 1. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new String("1");
+x |= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#8: x = new String("1"); x |= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.6.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.6.js
new file mode 100644
index 000000000..b3aa7445c
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.6.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x |= y is the same as x = x | y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.11_T2.6.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = "1";
+x |= undefined;
+if (x !== 1) {
+  $ERROR('#1: x = "1"; x |= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x |= "1";
+if (x !== 1) {
+  $ERROR('#2: x = undefined; x |= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x |= undefined;
+if (x !== 1) {
+  $ERROR('#3: x = new String("1"); x |= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x |= new String("1");
+if (x !== 1) {
+  $ERROR('#4: x = undefined; x |= new String("1"); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.7.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.7.js
new file mode 100644
index 000000000..b1539ad74
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.7.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x |= y is the same as x = x | y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.11_T2.7.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Null
+ */
+
+//CHECK#1
+x = "1";
+x |= null;
+if (x !== 1) {
+  $ERROR('#1: x = "1"; x |= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x |= "1";
+if (x !== 1) {
+  $ERROR('#2: x = null; x |= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x |= null;
+if (x !== 1) {
+  $ERROR('#3: x = new String("1"); x |= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x |= new String("1");
+if (x !== 1) {
+  $ERROR('#4: x = null; x |= new String("1"); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.8.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.8.js
new file mode 100644
index 000000000..dbe3e0a1f
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.8.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x |= y is the same as x = x | y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.11_T2.8.js
+ * @description Type(x) is different from Type(y) and both types vary between Boolean (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = true;
+x |= undefined;
+if (x !== 1) {
+  $ERROR('#1: x = true; x |= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x |= true;
+if (x !== 1) {
+  $ERROR('#2: x = undefined; x |= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x |= undefined;
+if (x !== 1) {
+  $ERROR('#3: x = new Boolean(true); x |= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x |= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#4: x = undefined; x |= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.9.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.9.js
new file mode 100644
index 000000000..aaf7e4a87
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.11_T2.9.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x |= y is the same as x = x | y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.11_T2.9.js
+ * @description Type(x) is different from Type(y) and both types vary between Boolean (primitive or object) and Null
+ */
+
+//CHECK#1
+x = true;
+x |= null;
+if (x !== 1) {
+  $ERROR('#1: x = true; x |= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x |= true;
+if (x !== 1) {
+  $ERROR('#2: x = null; x |= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x |= null;
+if (x !== 1) {
+  $ERROR('#3: x = new Boolean(true); x |= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x |= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#4: x = null; x |= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T1.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T1.1.js
new file mode 100644
index 000000000..bfc284bbc
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T1.1.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x *= y is the same as the production x = x * y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.1_T1.1.js
+ * @description Type(x) and Type(y) vary between primitive boolean and Boolean object
+ */
+
+//CHECK#1
+x = true;
+x *= true;
+if (x !== 1) {
+  $ERROR('#1: x = true; x *= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new Boolean(true);
+x *= true;
+if (x !== 1) {
+  $ERROR('#2: x = new Boolean(true); x *= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = true;
+x *= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#3: x = true; x *= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new Boolean(true);
+x *= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#4: x = new Boolean(true); x *= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T1.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T1.2.js
new file mode 100644
index 000000000..f13415b28
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T1.2.js
@@ -0,0 +1,39 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x *= y is the same as the production x = x * y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.1_T1.2.js
+ * @description Type(x) and Type(y) vary between primitive number and Number object
+ */
+
+//CHECK#1
+x = 1;
+x *= 1;
+if (x !== 1) {
+  $ERROR('#1: x = 1; x *= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new Number(1);
+x *= 1;
+if (x !== 1) {
+  $ERROR('#2: x = new Number(1); x *= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = 1;
+x *= new Number(1);
+if (x !== 1) {
+  $ERROR('#3: x = 1; x *= new Number(1); x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new Number(1);
+x *= new Number(1);
+if (x !== 1) {
+  $ERROR('#4: x = new Number(1); x *= new Number(1); x === 1. Actual: ' + (x));
+}
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T1.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T1.3.js
new file mode 100644
index 000000000..67aca8fc1
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T1.3.js
@@ -0,0 +1,52 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x *= y is the same as the production x = x * y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.1_T1.3.js
+ * @description Type(x) and Type(y) vary between primitive string and String object
+ */
+
+//CHECK#1
+x = "1";
+x *= "1";
+if (x !== 1) {
+  $ERROR('#1: x = "1"; x *= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new String("1");
+x *= "1";
+if (x !== 1) {
+  $ERROR('#2: x = new String("1"); x *= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = "1";
+x *= new String("1");
+if (x !== 1) {
+  $ERROR('#3: x = "1"; x *= new String("1"); x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new String("1");
+x *= new String("1");
+if (x !== 1) {
+  $ERROR('#4: x = new String("1"); x *= new String("1"); x === 1. Actual: ' + (x));
+}
+
+//CHECK#5
+x = "x";
+x *= "1";
+if (isNaN(x) !== true) {
+  $ERROR('#5: x = "x"; x *= "1"; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#6
+x = "1";
+x *= "x";
+if (isNaN(x) !== true) {
+  $ERROR('#6: x = "1"; x *= "x"; x === Not-a-Number. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T1.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T1.4.js
new file mode 100644
index 000000000..fbb268105
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T1.4.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x *= y is the same as the production x = x * y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.1_T1.4.js
+ * @description Type(x) and Type(y) vary between Null and Undefined
+ */
+
+//CHECK#1
+x = null;
+x *= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#1: x = null; x *= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x *= null;
+if (isNaN(x) !== true) {
+  $ERROR('#2: x = undefined; x *= null; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#3
+x = undefined;
+x *= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#3: x = undefined; x *= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x *= null;
+if (x !== 0) {
+  $ERROR('#4: x = null; x *= null; x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.1.js
new file mode 100644
index 000000000..29db0f5cb
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.1.js
@@ -0,0 +1,66 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x *= y is the same as the production x = x * y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.1_T2.1.js
+ * @description Type(x) is different from Type(y) and both types vary between Boolean (primitive or object) and Number (primitive and object)
+ */
+
+//CHECK#1
+x = true;
+x *= 1;
+if (x !== 1) {
+  $ERROR('#1: x = true; x *= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = 1;
+x *= true;
+if (x !== 1) {
+  $ERROR('#2: x = 1; x *= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x *= 1;
+if (x !== 1) {
+  $ERROR('#3: x = new Boolean(true); x *= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = 1;
+x *= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#4: x = 1; x *= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
+//CHECK#5
+x = true;
+x *= new Number(1);
+if (x !== 1) {
+  $ERROR('#5: x = true; x *= new Number(1); x === 1. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new Number(1);
+x *= true;
+if (x !== 1) {
+  $ERROR('#6: x = new Number(1); x *= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new Boolean(true);
+x *= new Number(1);
+if (x !== 1) {
+  $ERROR('#7: x = new Boolean(true); x *= new Number(1); x === 1. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new Number(1);
+x *= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#8: x = new Number(1); x *= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.2.js
new file mode 100644
index 000000000..7d3046127
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.2.js
@@ -0,0 +1,80 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x *= y is the same as the production x = x * y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.1_T2.2.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and String (primitive and object)
+ */
+
+//CHECK#1
+x = "1";
+x *= 1;
+if (x !== 1) {
+  $ERROR('#1: x = "1"; x *= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = 1;
+x *= "1";
+if (x !== 1) {
+  $ERROR('#2: x = 1; x *= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x *= 1;
+if (x !== 1) {
+  $ERROR('#3: x = new String("1"); x *= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = 1;
+x *= new String("1");
+if (x !== 1) {
+  $ERROR('#4: x = 1; x *= new String("1"); x === 1. Actual: ' + (x));
+}
+
+//CHECK#5
+x = "1";
+x *= new Number(1);
+if (x !== 1) {
+  $ERROR('#5: x = "1"; x *= new Number(1); x === 1. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new Number(1);
+x *= "1";
+if (x !== 1) {
+  $ERROR('#6: x = new Number(1); x *= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new String("1");
+x *= new Number(1);
+if (x !== 1) {
+  $ERROR('#7: x = new String("1"); x *= new Number(1); x === 1. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new Number(1);
+x *= new String("1");
+if (x !== 1) {
+  $ERROR('#8: x = new Number(1); x *= new String("1"); x === 1. Actual: ' + (x));
+}
+
+//CHECK#9
+x = "x";
+x *= 1;
+if (isNaN(x) !== true) {
+  $ERROR('#9: x = "x"; x *= 1; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#10
+x = 1;
+x *= "x";
+if (isNaN(x) !== true) {
+  $ERROR('#10: x = 1; x *= "x"; x === Not-a-Number. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.3.js
new file mode 100644
index 000000000..b796dc5cb
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.3.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x *= y is the same as the production x = x * y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.1_T2.3.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Null
+ */
+
+//CHECK#1
+x = 1;
+x *= null;
+if (x !== 0) {
+  $ERROR('#1: x = 1; x *= null; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x *= 1;
+if (x !== 0) {
+  $ERROR('#2: x = null; x *= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Number(1);
+x *= null;
+if (x !== 0) {
+  $ERROR('#3: x = new Number(1); x *= null; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x *= new Number(1);
+if (x !== 0) {
+  $ERROR('#4: x = null; x *= new Number(1); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.4.js
new file mode 100644
index 000000000..925d73634
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.4.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x *= y is the same as the production x = x * y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.1_T2.4.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = 1;
+x *= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#1: x = 1; x *= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x *= 1;
+if (isNaN(x) !== true) {
+  $ERROR('#2: x = undefined; x *= 1; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Number(1);
+x *= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#3: x = new Number(1); x *= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x *= new Number(1);
+if (isNaN(x) !== true) {
+  $ERROR('#4: x = undefined; x *= new Number(1); x === Not-a-Number. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.5.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.5.js
new file mode 100644
index 000000000..7799377cd
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.5.js
@@ -0,0 +1,66 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x *= y is the same as the production x = x * y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.1_T2.5.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) amd Boolean (primitive and object)
+ */
+
+//CHECK#1
+x = true;
+x *= "1";
+if (x !== 1) {
+  $ERROR('#1: x = true; x *= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = "1";
+x *= true;
+if (x !== 1) {
+  $ERROR('#2: x = "1"; x *= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x *= "1";
+if (x !== 1) {
+  $ERROR('#3: x = new Boolean(true); x *= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = "1";
+x *= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#4: x = "1"; x *= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
+//CHECK#5
+x = true;
+x *= new String("1");
+if (x !== 1) {
+  $ERROR('#5: x = true; x *= new String("1"); x === 1. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new String("1");
+x *= true;
+if (x !== 1) {
+  $ERROR('#6: x = new String("1"); x *= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new Boolean(true);
+x *= new String("1");
+if (x !== 1) {
+  $ERROR('#7: x = new Boolean(true); x *= new String("1"); x === 1. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new String("1");
+x *= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#8: x = new String("1"); x *= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.6.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.6.js
new file mode 100644
index 000000000..07be01351
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.6.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x *= y is the same as the production x = x * y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.1_T2.6.js
+ * @description Type(x) is different from Type(y) and both types vary between primitive String (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = "1";
+x *= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#1: x = "1"; x *= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x *= "1";
+if (isNaN(x) !== true) {
+  $ERROR('#2: x = undefined; x *= "1"; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x *= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#3: x = new String("1"); x *= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x *= new String("1");
+if (isNaN(x) !== true) {
+  $ERROR('#4: x = undefined; x *= new String("1"); x === Not-a-Number. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.7.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.7.js
new file mode 100644
index 000000000..b0e8eddc4
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.7.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x *= y is the same as the production x = x * y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.1_T2.7.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Null
+ */
+
+//CHECK#1
+x = "1";
+x *= null;
+if (x !== 0) {
+  $ERROR('#1: x = "1"; x *= null; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x *= "1";
+if (x !== 0) {
+  $ERROR('#2: x = null; x *= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x *= null;
+if (x !== 0) {
+  $ERROR('#3: x = new String("1"); x *= null; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x *= new String("1");
+if (x !== 0) {
+  $ERROR('#4: x = null; x *= new String("1"); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.8.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.8.js
new file mode 100644
index 000000000..dc0adc04c
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.8.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x *= y is the same as the production x = x * y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.1_T2.8.js
+ * @description Type(x) is different from Type(y) and both types vary between Boolean (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = true;
+x *= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#1: x = true; x *= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x *= true;
+if (isNaN(x) !== true) {
+  $ERROR('#2: x = undefined; x *= true; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x *= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#3: x = new Boolean(true); x *= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x *= new Boolean(true);
+if (isNaN(x) !== true) {
+  $ERROR('#4: x = undefined; x *= new Boolean(true); x === Not-a-Number. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.9.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.9.js
new file mode 100644
index 000000000..0a7443afe
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.1_T2.9.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x *= y is the same as the production x = x * y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.1_T2.9.js
+ * @description Type(x) is different from Type(y) and both types vary between Boolean (primitive or object) and Null
+ */
+
+//CHECK#1
+x = true;
+x *= null;
+if (x !== 0) {
+  $ERROR('#1: x = true; x *= null; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x *= true;
+if (x !== 0) {
+  $ERROR('#2: x = null; x *= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x *= null;
+if (x !== 0) {
+  $ERROR('#3: x = new Boolean(true); x *= null; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x *= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = null; x *= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T1.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T1.1.js
new file mode 100644
index 000000000..da1ab4cdf
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T1.1.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x /= y is the same as x = x / y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.2_T1.1.js
+ * @description Type(x) and Type(y) vary between primitive boolean and Boolean object
+ */
+
+//CHECK#1
+x = true;
+x /= true;
+if (x !== 1) {
+  $ERROR('#1: x = true; x /= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new Boolean(true);
+x /= true;
+if (x !== 1) {
+  $ERROR('#2: x = new Boolean(true); x /= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = true;
+x /= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#3: x = true; x /= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new Boolean(true);
+x /= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#4: x = new Boolean(true); x /= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T1.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T1.2.js
new file mode 100644
index 000000000..3287c7c78
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T1.2.js
@@ -0,0 +1,39 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x /= y is the same as x = x / y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.2_T1.2.js
+ * @description Type(x) and Type(y) vary between primitive number and Number object
+ */
+
+//CHECK#1
+x = 1;
+x /= 1;
+if (x !== 1) {
+  $ERROR('#1: x = 1; x /= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new Number(1);
+x /= 1;
+if (x !== 1) {
+  $ERROR('#2: x = new Number(1); x /= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = 1;
+x /= new Number(1);
+if (x !== 1) {
+  $ERROR('#3: x = 1; x /= new Number(1); x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new Number(1);
+x /= new Number(1);
+if (x !== 1) {
+  $ERROR('#4: x = new Number(1); x /= new Number(1); x === 1. Actual: ' + (x));
+}
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T1.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T1.3.js
new file mode 100644
index 000000000..d327257ff
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T1.3.js
@@ -0,0 +1,52 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x /= y is the same as x = x / y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.2_T1.3.js
+ * @description Type(x) and Type(y) vary between primitive string and String object
+ */
+
+//CHECK#1
+x = "1";
+x /= "1";
+if (x !== 1) {
+  $ERROR('#1: x = "1"; x /= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new String("1");
+x /= "1";
+if (x !== 1) {
+  $ERROR('#2: x = new String("1"); x /= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = "1";
+x /= new String("1");
+if (x !== 1) {
+  $ERROR('#3: x = "1"; x /= new String("1"); x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new String("1");
+x /= new String("1");
+if (x !== 1) {
+  $ERROR('#4: x = new String("1"); x /= new String("1"); x === 1. Actual: ' + (x));
+}
+
+//CHECK#5
+x = "x";
+x /= "1";
+if (isNaN(x) !== true) {
+  $ERROR('#5: x = "x"; x /= "1"; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#6
+x = "1";
+x /= "x";
+if (isNaN(x) !== true) {
+  $ERROR('#6: x = "1"; x /= "x"; x === Not-a-Number. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T1.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T1.4.js
new file mode 100644
index 000000000..e97535c94
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T1.4.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x /= y is the same as x = x / y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.2_T1.4.js
+ * @description Type(x) and Type(y) vary between Null and Undefined
+ */
+
+//CHECK#1
+x = null;
+x /= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#1: x = null; x /= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x /= null;
+if (isNaN(x) !== true) {
+  $ERROR('#2: x = undefined; x /= null; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#3
+x = undefined;
+x /= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#3: x = undefined; x /= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x /= null;
+if (isNaN(x) !== true) {
+  $ERROR('#4: x = null; x /= null; x === Not-a-Number. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.1.js
new file mode 100644
index 000000000..46eae946e
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.1.js
@@ -0,0 +1,66 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x /= y is the same as x = x / y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.2_T2.1.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Boolean (primitive and object)
+ */
+
+//CHECK#1
+x = true;
+x /= 1;
+if (x !== 1) {
+  $ERROR('#1: x = true; x /= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = 1;
+x /= true;
+if (x !== 1) {
+  $ERROR('#2: x = 1; x /= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x /= 1;
+if (x !== 1) {
+  $ERROR('#3: x = new Boolean(true); x /= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = 1;
+x /= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#4: x = 1; x /= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
+//CHECK#5
+x = true;
+x /= new Number(1);
+if (x !== 1) {
+  $ERROR('#5: x = true; x /= new Number(1); x === 1. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new Number(1);
+x /= true;
+if (x !== 1) {
+  $ERROR('#6: x = new Number(1); x /= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new Boolean(true);
+x /= new Number(1);
+if (x !== 1) {
+  $ERROR('#7: x = new Boolean(true); x /= new Number(1); x === 1. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new Number(1);
+x /= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#8: x = new Number(1); x /= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.2.js
new file mode 100644
index 000000000..8a607b515
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.2.js
@@ -0,0 +1,80 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x /= y is the same as x = x / y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.2_T2.2.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and String (primitive and object)
+ */
+
+//CHECK#1
+x = "1";
+x /= 1;
+if (x !== 1) {
+  $ERROR('#1: x = "1"; x /= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = 1;
+x /= "1";
+if (x !== 1) {
+  $ERROR('#2: x = 1; x /= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x /= 1;
+if (x !== 1) {
+  $ERROR('#3: x = new String("1"); x /= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = 1;
+x /= new String("1");
+if (x !== 1) {
+  $ERROR('#4: x = 1; x /= new String("1"); x === 1. Actual: ' + (x));
+}
+
+//CHECK#5
+x = "1";
+x /= new Number(1);
+if (x !== 1) {
+  $ERROR('#5: x = "1"; x /= new Number(1); x === 1. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new Number(1);
+x /= "1";
+if (x !== 1) {
+  $ERROR('#6: x = new Number(1); x /= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new String("1");
+x /= new Number(1);
+if (x !== 1) {
+  $ERROR('#7: x = new String("1"); x /= new Number(1); x === 1. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new Number(1);
+x /= new String("1");
+if (x !== 1) {
+  $ERROR('#8: x = new Number(1); x /= new String("1"); x === 1. Actual: ' + (x));
+}
+
+//CHECK#9
+x = "x";
+x /= 1;
+if (isNaN(x) !== true) {
+  $ERROR('#9: x = "x"; x /= 1; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#10
+x = 1;
+x /= "x";
+if (isNaN(x) !== true) {
+  $ERROR('#10: x = 1; x /= "x"; x === Not-a-Number. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.3.js
new file mode 100644
index 000000000..dae7a092a
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.3.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x /= y is the same as x = x / y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.2_T2.3.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Null
+ */
+
+//CHECK#1
+x = 1;
+x /= null;
+if (x !== Number.POSITIVE_INFINITY) {
+  $ERROR('#1: x = 1; x /= null; x === +Infinity. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x /= 1;
+if (x !== 0) {
+  $ERROR('#2: x = null; x /= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Number(1);
+x /= null;
+if (x !== Number.POSITIVE_INFINITY) {
+  $ERROR('#3: x = new Number(1); x /= null; x === +Infinity. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x /= new Number(1);
+if (x !== 0) {
+  $ERROR('#4: x = null; x /= new Number(1); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.4.js
new file mode 100644
index 000000000..28c6d611d
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.4.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x /= y is the same as x = x / y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.2_T2.4.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = 1;
+x /= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#1: x = 1; x /= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x /= 1;
+if (isNaN(x) !== true) {
+  $ERROR('#2: x = undefined; x /= 1; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Number(1);
+x /= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#3: x = new Number(1); x /= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x /= new Number(1);
+if (isNaN(x) !== true) {
+  $ERROR('#4: x = undefined; x /= new Number(1); x === Not-a-Number. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.5.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.5.js
new file mode 100644
index 000000000..f4ea9ad5f
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.5.js
@@ -0,0 +1,66 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x /= y is the same as x = x / y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.2_T2.5.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Boolean (primitive and object)
+ */
+
+//CHECK#1
+x = true;
+x /= "1";
+if (x !== 1) {
+  $ERROR('#1: x = true; x /= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = "1";
+x /= true;
+if (x !== 1) {
+  $ERROR('#2: x = "1"; x /= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x /= "1";
+if (x !== 1) {
+  $ERROR('#3: x = new Boolean(true); x /= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = "1";
+x /= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#4: x = "1"; x /= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
+//CHECK#5
+x = true;
+x /= new String("1");
+if (x !== 1) {
+  $ERROR('#5: x = true; x /= new String("1"); x === 1. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new String("1");
+x /= true;
+if (x !== 1) {
+  $ERROR('#6: x = new String("1"); x /= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new Boolean(true);
+x /= new String("1");
+if (x !== 1) {
+  $ERROR('#7: x = new Boolean(true); x /= new String("1"); x === 1. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new String("1");
+x /= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#8: x = new String("1"); x /= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.6.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.6.js
new file mode 100644
index 000000000..91ce4dd2b
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.6.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x /= y is the same as x = x / y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.2_T2.6.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = "1";
+x /= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#1: x = "1"; x /= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x /= "1";
+if (isNaN(x) !== true) {
+  $ERROR('#2: x = undefined; x /= "1"; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x /= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#3: x = new String("1"); x /= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x /= new String("1");
+if (isNaN(x) !== true) {
+  $ERROR('#4: x = undefined; x /= new String("1"); x === Not-a-Number. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.7.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.7.js
new file mode 100644
index 000000000..99905f4d9
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.7.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x /= y is the same as x = x / y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.2_T2.7.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Null
+ */
+
+//CHECK#1
+x = "1";
+x /= null;
+if (x !== Number.POSITIVE_INFINITY) {
+  $ERROR('#1: x = "1"; x /= null; x === +Infinity. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x /= "1";
+if (x !== 0) {
+  $ERROR('#2: x = null; x /= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x /= null;
+if (x !== Number.POSITIVE_INFINITY) {
+  $ERROR('#3: x = new String("1"); x /= null; x === +Infinity. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x /= new String("1");
+if (x !== 0) {
+  $ERROR('#4: x = null; x /= new String("1"); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.8.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.8.js
new file mode 100644
index 000000000..c5c373b76
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.8.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x /= y is the same as x = x / y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.2_T2.8.js
+ * @description Type(x) is different from Type(y) and both types vary between Boolean (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = true;
+x /= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#1: x = true; x /= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x /= true;
+if (isNaN(x) !== true) {
+  $ERROR('#2: x = undefined; x /= true; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x /= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#3: x = new Boolean(true); x /= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x /= new Boolean(true);
+if (isNaN(x) !== true) {
+  $ERROR('#4: x = undefined; x /= new Boolean(true); x === Not-a-Number. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.9.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.9.js
new file mode 100644
index 000000000..466f9ce87
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.2_T2.9.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x /= y is the same as x = x / y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.2_T2.9.js
+ * @description Type(x) is different from Type(y) and both types vary between Boolean (primitive or object) and Null
+ */
+
+//CHECK#1
+x = true;
+x /= null;
+if (x !== Number.POSITIVE_INFINITY) {
+  $ERROR('#1: x = true; x /= null; x === +Infinity. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x /= true;
+if (x !== 0) {
+  $ERROR('#2: x = null; x /= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x /= null;
+if (x !== Number.POSITIVE_INFINITY) {
+  $ERROR('#3: x = new Boolean(true); x /= null; x === +Infinity. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x /= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = null; x /= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T1.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T1.1.js
new file mode 100644
index 000000000..bb8d9cccd
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T1.1.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x %= y is the same as x = x % y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.3_T1.1.js
+ * @description Type(x) and Type(y) vary between primitive boolean and Boolean object
+ */
+
+//CHECK#1
+x = true;
+x %= true;
+if (x !== 0) {
+  $ERROR('#1: x = true; x %= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new Boolean(true);
+x %= true;
+if (x !== 0) {
+  $ERROR('#2: x = new Boolean(true); x %= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = true;
+x %= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#3: x = true; x %= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new Boolean(true);
+x %= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = new Boolean(true); x %= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T1.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T1.2.js
new file mode 100644
index 000000000..97093ecdb
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T1.2.js
@@ -0,0 +1,39 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x %= y is the same as x = x % y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.3_T1.2.js
+ * @description Type(x) and Type(y) vary between primitive number and Number object
+ */
+
+//CHECK#1
+x = 1;
+x %= 1;
+if (x !== 0) {
+  $ERROR('#1: x = 1; x %= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new Number(1);
+x %= 1;
+if (x !== 0) {
+  $ERROR('#2: x = new Number(1); x %= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = 1;
+x %= new Number(1);
+if (x !== 0) {
+  $ERROR('#3: x = 1; x %= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new Number(1);
+x %= new Number(1);
+if (x !== 0) {
+  $ERROR('#4: x = new Number(1); x %= new Number(1); x === 0. Actual: ' + (x));
+}
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T1.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T1.3.js
new file mode 100644
index 000000000..e95df69bb
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T1.3.js
@@ -0,0 +1,52 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x %= y is the same as x = x % y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.3_T1.3.js
+ * @description Type(x) and Type(y) vary between primitive string and String object
+ */
+
+//CHECK#1
+x = "1";
+x %= "1";
+if (x !== 0) {
+  $ERROR('#1: x = "1"; x %= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new String("1");
+x %= "1";
+if (x !== 0) {
+  $ERROR('#2: x = new String("1"); x %= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = "1";
+x %= new String("1");
+if (x !== 0) {
+  $ERROR('#3: x = "1"; x %= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new String("1");
+x %= new String("1");
+if (x !== 0) {
+  $ERROR('#4: x = new String("1"); x %= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#5
+x = "x";
+x %= "1";
+if (isNaN(x) !== true) {
+  $ERROR('#5: x = "x"; x %= "1"; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#6
+x = "1";
+x %= "x";
+if (isNaN(x) !== true) {
+  $ERROR('#6: x = "1"; x %= "x"; x === Not-a-Number. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T1.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T1.4.js
new file mode 100644
index 000000000..51e763cac
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T1.4.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x %= y is the same as x = x % y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.3_T1.4.js
+ * @description Type(x) and Type(y) vary between Null and Undefined
+ */
+
+//CHECK#1
+x = null;
+x %= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#1: x = null; x %= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x %= null;
+if (isNaN(x) !== true) {
+  $ERROR('#2: x = undefined; x %= null; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#3
+x = undefined;
+x %= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#3: x = undefined; x %= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x %= null;
+if (isNaN(x) !== true) {
+  $ERROR('#4: x = null; x %= null; x === Not-a-Number. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.1.js
new file mode 100644
index 000000000..a45476433
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.1.js
@@ -0,0 +1,66 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x %= y is the same as x = x % y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.3_T2.1.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Boolean (primitive and object)
+ */
+
+//CHECK#1
+x = true;
+x %= 1;
+if (x !== 0) {
+  $ERROR('#1: x = true; x %= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = 1;
+x %= true;
+if (x !== 0) {
+  $ERROR('#2: x = 1; x %= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x %= 1;
+if (x !== 0) {
+  $ERROR('#3: x = new Boolean(true); x %= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = 1;
+x %= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = 1; x %= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
+//CHECK#5
+x = true;
+x %= new Number(1);
+if (x !== 0) {
+  $ERROR('#5: x = true; x %= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new Number(1);
+x %= true;
+if (x !== 0) {
+  $ERROR('#6: x = new Number(1); x %= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new Boolean(true);
+x %= new Number(1);
+if (x !== 0) {
+  $ERROR('#7: x = new Boolean(true); x %= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new Number(1);
+x %= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#8: x = new Number(1); x %= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.2.js
new file mode 100644
index 000000000..e2027c6b3
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.2.js
@@ -0,0 +1,80 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x %= y is the same as x = x % y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.3_T2.2.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and String (primitive and object)
+ */
+
+//CHECK#1
+x = "1";
+x %= 1;
+if (x !== 0) {
+  $ERROR('#1: x = "1"; x %= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = 1;
+x %= "1";
+if (x !== 0) {
+  $ERROR('#2: x = 1; x %= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x %= 1;
+if (x !== 0) {
+  $ERROR('#3: x = new String("1"); x %= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = 1;
+x %= new String("1");
+if (x !== 0) {
+  $ERROR('#4: x = 1; x %= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#5
+x = "1";
+x %= new Number(1);
+if (x !== 0) {
+  $ERROR('#5: x = "1"; x %= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new Number(1);
+x %= "1";
+if (x !== 0) {
+  $ERROR('#6: x = new Number(1); x %= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new String("1");
+x %= new Number(1);
+if (x !== 0) {
+  $ERROR('#7: x = new String("1"); x %= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new Number(1);
+x %= new String("1");
+if (x !== 0) {
+  $ERROR('#8: x = new Number(1); x %= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#9
+x = "x";
+x %= 1;
+if (isNaN(x) !== true) {
+  $ERROR('#9: x = "x"; x %= 1; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#10
+x = 1;
+x %= "x";
+if (isNaN(x) !== true) {
+  $ERROR('#10: x = 1; x %= "x"; x === Not-a-Number. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.3.js
new file mode 100644
index 000000000..8566f8702
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.3.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x %= y is the same as x = x % y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.3_T2.3.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Null
+ */
+
+//CHECK#1
+x = 1;
+x %= null;
+if (isNaN(x) !== true) {
+  $ERROR('#1: x = 1; x %= null; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x %= 1;
+if (x !== 0) {
+  $ERROR('#2: x = null; x %= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Number(1);
+x %= null;
+if (isNaN(x) !== true) {
+  $ERROR('#3: x = new Number(1); x %= null; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x %= new Number(1);
+if (x !== 0) {
+  $ERROR('#4: x = null; x %= new Number(1); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.4.js
new file mode 100644
index 000000000..259c937b4
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.4.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x %= y is the same as x = x % y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.3_T2.4.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = 1;
+x %= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#1: x = 1; x %= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x %= 1;
+if (isNaN(x) !== true) {
+  $ERROR('#2: x = undefined; x %= 1; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Number(1);
+x %= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#3: x = new Number(1); x %= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x %= new Number(1);
+if (isNaN(x) !== true) {
+  $ERROR('#4: x = undefined; x %= new Number(1); x === Not-a-Number. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.5.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.5.js
new file mode 100644
index 000000000..69bff3cb4
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.5.js
@@ -0,0 +1,66 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x %= y is the same as x = x % y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.3_T2.5.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Boolean (primitive and object)
+ */
+
+//CHECK#1
+x = true;
+x %= "1";
+if (x !== 0) {
+  $ERROR('#1: x = true; x %= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = "1";
+x %= true;
+if (x !== 0) {
+  $ERROR('#2: x = "1"; x %= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x %= "1";
+if (x !== 0) {
+  $ERROR('#3: x = new Boolean(true); x %= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = "1";
+x %= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = "1"; x %= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
+//CHECK#5
+x = true;
+x %= new String("1");
+if (x !== 0) {
+  $ERROR('#5: x = true; x %= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new String("1");
+x %= true;
+if (x !== 0) {
+  $ERROR('#6: x = new String("1"); x %= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new Boolean(true);
+x %= new String("1");
+if (x !== 0) {
+  $ERROR('#7: x = new Boolean(true); x %= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new String("1");
+x %= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#8: x = new String("1"); x %= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.6.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.6.js
new file mode 100644
index 000000000..51f30a6d0
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.6.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x %= y is the same as x = x % y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.3_T2.6.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = "1";
+x %= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#1: x = "1"; x %= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x %= "1";
+if (isNaN(x) !== true) {
+  $ERROR('#2: x = undefined; x %= "1"; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x %= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#3: x = new String("1"); x %= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x %= new String("1");
+if (isNaN(x) !== true) {
+  $ERROR('#4: x = undefined; x %= new String("1"); x === Not-a-Number. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.7.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.7.js
new file mode 100644
index 000000000..e451b5bfe
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.7.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x %= y is the same as x = x % y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.3_T2.7.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Null
+ */
+
+//CHECK#1
+x = "1";
+x %= null;
+if (isNaN(x) !== true) {
+  $ERROR('#1: x = "1"; x %= null; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x %= "1";
+if (x !== 0) {
+  $ERROR('#2: x = null; x %= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x %= null;
+if (isNaN(x) !== true) {
+  $ERROR('#3: x = new String("1"); x %= null; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x %= new String("1");
+if (x !== 0) {
+  $ERROR('#4: x = null; x %= new String("1"); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.8.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.8.js
new file mode 100644
index 000000000..59a57095d
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.8.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x %= y is the same as x = x % y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.3_T2.8.js
+ * @description Type(x) is different from Type(y) and both types vary between Boolean (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = true;
+x %= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#1: x = true; x %= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x %= true;
+if (isNaN(x) !== true) {
+  $ERROR('#2: x = undefined; x %= true; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x %= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#3: x = new Boolean(true); x %= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x %= new Boolean(true);
+if (isNaN(x) !== true) {
+  $ERROR('#4: x = undefined; x %= new Boolean(true); x === Not-a-Number. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.9.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.9.js
new file mode 100644
index 000000000..ebb9b209f
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.3_T2.9.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x %= y is the same as x = x % y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.3_T2.9.js
+ * @description Type(x) is different from Type(y) and both types vary between Boolean (primitive or object) and Null
+ */
+
+//CHECK#1
+x = true;
+x %= null;
+if (isNaN(x) !== true) {
+  $ERROR('#1: x = true; x %= null; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x %= true;
+if (x !== 0) {
+  $ERROR('#2: x = null; x %= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x %= null;
+if (isNaN(x) !== true) {
+  $ERROR('#3: x = new Boolean(true); x %= null; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x %= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = null; x %= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T1.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T1.1.js
new file mode 100644
index 000000000..11313aac6
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T1.1.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x += y is the same as x = x + y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.4_T1.1.js
+ * @description Type(x) and Type(y) vary between primitive boolean and Boolean object
+ */
+
+//CHECK#1
+x = true;
+x += true;
+if (x !== 2) {
+  $ERROR('#1: x = true; x += true; x === 2. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new Boolean(true);
+x += true;
+if (x !== 2) {
+  $ERROR('#2: x = new Boolean(true); x += true; x === 2. Actual: ' + (x));
+}
+
+//CHECK#3
+x = true;
+x += new Boolean(true);
+if (x !== 2) {
+  $ERROR('#3: x = true; x += new Boolean(true); x === 2. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new Boolean(true);
+x += new Boolean(true);
+if (x !== 2) {
+  $ERROR('#4: x = new Boolean(true); x += new Boolean(true); x === 2. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T1.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T1.2.js
new file mode 100644
index 000000000..141d56b4d
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T1.2.js
@@ -0,0 +1,39 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x += y is the same as x = x + y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.4_T1.2.js
+ * @description Type(x) and Type(y) vary between primitive number and Number object
+ */
+
+//CHECK#1
+x = 1;
+x += 1;
+if (x !== 2) {
+  $ERROR('#1: x = 1; x += 1; x === 2. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new Number(1);
+x += 1;
+if (x !== 2) {
+  $ERROR('#2: x = new Number(1); x += 1; x === 2. Actual: ' + (x));
+}
+
+//CHECK#3
+x = 1;
+x += new Number(1);
+if (x !== 2) {
+  $ERROR('#3: x = 1; x += new Number(1); x === 2. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new Number(1);
+x += new Number(1);
+if (x !== 2) {
+  $ERROR('#4: x = new Number(1); x += new Number(1); x === 2. Actual: ' + (x));
+}
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T1.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T1.3.js
new file mode 100644
index 000000000..da89e3789
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T1.3.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x += y is the same as x = x + y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.4_T1.3.js
+ * @description Type(x) and Type(y) vary between Null and Undefined
+ */
+
+//CHECK#1
+x = null;
+x += undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#1: x = null; x += undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x += null;
+if (isNaN(x) !== true) {
+  $ERROR('#2: x = undefined; x += null; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#3
+x = undefined;
+x += undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#3: x = undefined; x += undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x += null;
+if (x !== 0) {
+  $ERROR('#4: x = null; x += null; x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T1.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T1.4.js
new file mode 100644
index 000000000..3ae788c91
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T1.4.js
@@ -0,0 +1,50 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x += y is the same as x = x + y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.4_T1.4.js
+ * @description Type(x) and Type(y) vary between primitive string and String object
+ */
+
+//CHECK#1
+x = "1";
+x += "1";
+if (x !== "11") {
+  $ERROR('#1: x = "1"; x += "1"; x === "11". Actual: ' + (x));
+}
+
+//CHECK#2
+x = new String("1");
+x += "1";
+if (x !== "11") {
+  $ERROR('#2: x = new String("1"); x += "1"; x === "11". Actual: ' + (x));
+}
+
+//CHECK#3
+x = "1";
+x += new String("1");
+if (x !== "11") {
+  $ERROR('#3: x = "1"; x += new String("1"); x === "11". Actual: ' + (x));
+}
+
+//CHECK#4
+x = new String("1");
+x += new String("1");
+if (x !== "11") {
+  $ERROR('#4: x = new String("1"); x += new String("1"); x === "11". Actual: ' + (x));
+}
+
+//CHECK#5
+if ("x" + "1" !=="x1") {
+  $ERROR('#5: x = "x"; x += "1"; x === "x1". Actual: ' + (x));
+}
+
+//CHECK#6
+x = "1";
+x += "x";
+if (x !== "1x") {
+  $ERROR('#6: x = "1"; x += "x"; x === "1x". Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.1.js
new file mode 100644
index 000000000..b26a00f80
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.1.js
@@ -0,0 +1,66 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x += y is the same as x = x + y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.4_T2.1.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Boolean (primitive and object)
+ */
+
+//CHECK#1
+x = true;
+x += 1;
+if (x !== 2) {
+  $ERROR('#1: x = true; x += 1; x === 2. Actual: ' + (x));
+}
+
+//CHECK#2
+x = 1;
+x += true;
+if (x !== 2) {
+  $ERROR('#2: x = 1; x += true; x === 2. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x += 1;
+if (x !== 2) {
+  $ERROR('#3: x = new Boolean(true); x += 1; x === 2. Actual: ' + (x));
+}
+
+//CHECK#4
+x = 1;
+x += new Boolean(true);
+if (x !== 2) {
+  $ERROR('#4: x = 1; x += new Boolean(true); x === 2. Actual: ' + (x));
+}
+
+//CHECK#5
+x = true;
+x += new Number(1);
+if (x !== 2) {
+  $ERROR('#5: x = true; x += new Number(1); x === 2. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new Number(1);
+x += true;
+if (x !== 2) {
+  $ERROR('#6: x = new Number(1); x += true; x === 2. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new Boolean(true);
+x += new Number(1);
+if (x !== 2) {
+  $ERROR('#7: x = new Boolean(true); x += new Number(1); x === 2. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new Number(1);
+x += new Boolean(true);
+if (x !== 2) {
+  $ERROR('#8: x = new Number(1); x += new Boolean(true); x === 2. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.2.js
new file mode 100644
index 000000000..73b6923bf
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.2.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x += y is the same as x = x + y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.4_T2.2.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Null
+ */
+
+//CHECK#1
+x = 1;
+x += null;
+if (x !== 1) {
+  $ERROR('#1: x = 1; x += null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x += 1;
+if (x !== 1) {
+  $ERROR('#2: x = null; x += 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Number(1);
+x += null;
+if (x !== 1) {
+  $ERROR('#3: x = new Number(1); x += null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x += new Number(1);
+if (x !== 1) {
+  $ERROR('#4: x = null; x += new Number(1); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.3.js
new file mode 100644
index 000000000..158d2aa24
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.3.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x += y is the same as x = x + y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.4_T2.3.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = 1;
+x += undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#1: x = 1; x += undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x += 1;
+if (isNaN(x) !== true) {
+  $ERROR('#2: x = undefined; x += 1; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Number(1);
+x += undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#3: x = new Number(1); x += undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x += new Number(1);
+if (isNaN(x) !== true) {
+  $ERROR('#4: x = undefined; x += new Number(1); x === Not-a-Number. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.4.js
new file mode 100644
index 000000000..f54e30a45
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.4.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x += y is the same as x = x + y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.4_T2.4.js
+ * @description Type(x) is different from Type(y) and both types vary between Boolean (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = true;
+x += undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#1: x = true; x += undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x += true;
+if (isNaN(x) !== true) {
+  $ERROR('#2: x = undefined; x += true; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x += undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#3: x = new Boolean(true); x += undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x += new Boolean(true);
+if (isNaN(x) !== true) {
+  $ERROR('#4: x = undefined; x += new Boolean(true); x === Not-a-Number. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.5.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.5.js
new file mode 100644
index 000000000..b020ca563
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.5.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x += y is the same as x = x + y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.4_T2.5.js
+ * @description Type(x) is different from Type(y) and both types vary between Boolean (primitive or object) and Null
+ */
+
+//CHECK#1
+x = true;
+x += null;
+if (x !== 1) {
+  $ERROR('#1: x = true; x += null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x += true;
+if (x !== 1) {
+  $ERROR('#2: x = null; x += true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x += null;
+if (x !== 1) {
+  $ERROR('#3: x = new Boolean(true); x += null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x += new Boolean(true);
+if (x !== 1) {
+  $ERROR('#4: x = null; x += new Boolean(true); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.6.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.6.js
new file mode 100644
index 000000000..7833c0ce9
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.6.js
@@ -0,0 +1,78 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x += y is the same as x = x + y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.4_T2.6.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and String (primitive and object)
+ */
+
+//CHECK#1
+x = "1";
+x += 1;
+if (x !== "11") {
+  $ERROR('#1: x = "1"; x += 1; x === "11". Actual: ' + (x));
+}
+
+//CHECK#2
+x = 1;
+x += "1";
+if (x !== "11") {
+  $ERROR('#2: x = 1; x += "1"; x === "11". Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x += 1;
+if (x !== "11") {
+  $ERROR('#3: x = new String("1"); x += 1; x === "11". Actual: ' + (x));
+}
+
+//CHECK#4
+x = 1;
+x += new String("1");
+if (x !== "11") {
+  $ERROR('#4: x = 1; x += new String("1"); x === "11". Actual: ' + (x));
+}
+
+//CHECK#5
+x = "1";
+x += new Number(1);
+if (x !== "11") {
+  $ERROR('#5: x = "1"; x += new Number(1); x === "11". Actual: ' + (x));
+}
+
+//CHECK#6
+x = new Number(1);
+x += "1";
+if (x !== "11") {
+  $ERROR('#6: x = new Number(1); x += "1"; x === "11". Actual: ' + (x));
+}
+
+//CHECK#7
+x = new String("1");
+x += new Number(1);
+if (x !== "11") {
+  $ERROR('#7: x = new String("1"); x += new Number(1); x === "11". Actual: ' + (x));
+}
+
+//CHECK#8
+x = new Number(1);
+x += new String("1");
+if (x !== "11") {
+  $ERROR('#8: x = new Number(1); x += new String("1"); x === "11". Actual: ' + (x));
+}
+
+//CHECK#9
+if ("x" + 1 !=="x1") {
+  $ERROR('#9: x = "x"; x += 1; x === "x1". Actual: ' + (x));
+}
+
+//CHECK#10
+x = 1;
+x += "x";
+if (x !== "1x") {
+  $ERROR('#10: x = 1; x += "x"; x === "1x". Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.7.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.7.js
new file mode 100644
index 000000000..2d80cf750
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.7.js
@@ -0,0 +1,66 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x += y is the same as x = x + y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.4_T2.7.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Boolean (primitive and object)
+ */
+
+//CHECK#1
+x = true;
+x += "1";
+if (x !== "true1") {
+  $ERROR('#1: x = true; x += "1"; x === "true1". Actual: ' + (x));
+}
+
+//CHECK#2
+x = "1";
+x += true;
+if (x !== "1true") {
+  $ERROR('#2: x = "1"; x += true; x === "1true". Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x += "1";
+if (x !== "true1") {
+  $ERROR('#3: x = new Boolean(true); x += "1"; x === "true1". Actual: ' + (x));
+}
+
+//CHECK#4
+x = "1";
+x += new Boolean(true);
+if (x !== "1true") {
+  $ERROR('#4: x = "1"; x += new Boolean(true); x === "1true". Actual: ' + (x));
+}
+
+//CHECK#5
+x = true;
+x += new String("1");
+if (x !== "true1") {
+  $ERROR('#5: x = true; x += new String("1"); x === "true1". Actual: ' + (x));
+}
+
+//CHECK#6
+x = new String("1");
+x += true;
+if (x !== "1true") {
+  $ERROR('#6: x = new String("1"); x += true; x === "1true". Actual: ' + (x));
+}
+
+//CHECK#7
+x = new Boolean(true);
+x += new String("1");
+if (x !== "true1") {
+  $ERROR('#7: x = new Boolean(true); x += new String("1"); x === "true1". Actual: ' + (x));
+}
+
+//CHECK#8
+x = new String("1");
+x += new Boolean(true);
+if (x !== "1true") {
+  $ERROR('#8: x = new String("1"); x += new Boolean(true); x === "1true". Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.8.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.8.js
new file mode 100644
index 000000000..c5f364c15
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.8.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x += y is the same as x = x + y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.4_T2.8.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = "1";
+x += undefined;
+if (x !== "1undefined") {
+  $ERROR('#1: x = "1"; x += undefined; x === "1undefined". Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x += "1";
+if (x !== "undefined1") {
+  $ERROR('#2: x = undefined; x += "1"; x === "undefined1". Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x += undefined;
+if (x !== "1undefined") {
+  $ERROR('#3: x = new String("1"); x += undefined; x === "1undefined". Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x += new String("1");
+if (x !== "undefined1") {
+  $ERROR('#4: x = undefined; x += new String("1"); x === "undefined1". Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.9.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.9.js
new file mode 100644
index 000000000..f2a986ab8
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.4_T2.9.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x += y is the same as x = x + y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.4_T2.9.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Null
+ */
+
+//CHECK#1
+x = "1";
+x += null;
+if (x !== "1null") {
+  $ERROR('#1: x = "1"; x += null; x === "1null". Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x += "1";
+if (x !== "null1") {
+  $ERROR('#2: x = null; x += "1"; x === "null1". Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x += null;
+if (x !== "1null") {
+  $ERROR('#3: x = new String("1"); x += null; x === "1null". Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x += new String("1");
+if (x !== "null1") {
+  $ERROR('#4: x = null; x += new String("1"); x === "null1". Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T1.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T1.1.js
new file mode 100644
index 000000000..1a155d3da
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T1.1.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x -= y is the same as x = x - y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.5_T1.1.js
+ * @description Type(x) and Type(y) vary between primitive boolean and Boolean object
+ */
+
+//CHECK#1
+x = true;
+x -= true;
+if (x !== 0) {
+  $ERROR('#1: x = true; x -= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new Boolean(true);
+x -= true;
+if (x !== 0) {
+  $ERROR('#2: x = new Boolean(true); x -= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = true;
+x -= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#3: x = true; x -= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new Boolean(true);
+x -= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = new Boolean(true); x -= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T1.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T1.2.js
new file mode 100644
index 000000000..42d5abdb7
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T1.2.js
@@ -0,0 +1,39 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x -= y is the same as x = x - y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.5_T1.2.js
+ * @description Type(x) and Type(y) vary between primitive number and Number object
+ */
+
+//CHECK#1
+x = 1;
+x -= 1;
+if (x !== 0) {
+  $ERROR('#1: x = 1; x -= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new Number(1);
+x -= 1;
+if (x !== 0) {
+  $ERROR('#2: x = new Number(1); x -= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = 1;
+x -= new Number(1);
+if (x !== 0) {
+  $ERROR('#3: x = 1; x -= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new Number(1);
+x -= new Number(1);
+if (x !== 0) {
+  $ERROR('#4: x = new Number(1); x -= new Number(1); x === 0. Actual: ' + (x));
+}
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T1.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T1.3.js
new file mode 100644
index 000000000..298948f61
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T1.3.js
@@ -0,0 +1,52 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x -= y is the same as x = x - y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.5_T1.3.js
+ * @description Type(x) and Type(y) vary between primitive string and String object
+ */
+
+//CHECK#1
+x = "1";
+x -= "1";
+if (x !== 0) {
+  $ERROR('#1: x = "1"; x -= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new String("1");
+x -= "1";
+if (x !== 0) {
+  $ERROR('#2: x = new String("1"); x -= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = "1";
+x -= new String("1");
+if (x !== 0) {
+  $ERROR('#3: x = "1"; x -= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new String("1");
+x -= new String("1");
+if (x !== 0) {
+  $ERROR('#4: x = new String("1"); x -= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#5
+x = "x";
+x -= "1";
+if (isNaN(x) !== true) {
+  $ERROR('#5: x = "x"; x -= "1"; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#6
+x = "1";
+x -= "x";
+if (isNaN(x) !== true) {
+  $ERROR('#6: x = "1"; x -= "x"; x === Not-a-Number. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T1.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T1.4.js
new file mode 100644
index 000000000..28a9d2d76
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T1.4.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x -= y is the same as x = x - y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.5_T1.4.js
+ * @description Type(x) and Type(y) vary between Null and Undefined
+ */
+
+//CHECK#1
+x = null;
+x -= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#1: x = null; x -= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x -= null;
+if (isNaN(x) !== true) {
+  $ERROR('#2: x = undefined; x -= null; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#3
+x = undefined;
+x -= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#3: x = undefined; x -= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x -= null;
+if (x !== 0) {
+  $ERROR('#4: x = null; x -= null; x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.1.js
new file mode 100644
index 000000000..94b810cbc
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.1.js
@@ -0,0 +1,66 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x -= y is the same as x = x - y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.5_T2.1.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Boolean (primitive and object)
+ */
+
+//CHECK#1
+x = true;
+x -= 1;
+if (x !== 0) {
+  $ERROR('#1: x = true; x -= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = 1;
+x -= true;
+if (x !== 0) {
+  $ERROR('#2: x = 1; x -= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x -= 1;
+if (x !== 0) {
+  $ERROR('#3: x = new Boolean(true); x -= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = 1;
+x -= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = 1; x -= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
+//CHECK#5
+x = true;
+x -= new Number(1);
+if (x !== 0) {
+  $ERROR('#5: x = true; x -= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new Number(1);
+x -= true;
+if (x !== 0) {
+  $ERROR('#6: x = new Number(1); x -= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new Boolean(true);
+x -= new Number(1);
+if (x !== 0) {
+  $ERROR('#7: x = new Boolean(true); x -= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new Number(1);
+x -= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#8: x = new Number(1); x -= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.2.js
new file mode 100644
index 000000000..e71788b75
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.2.js
@@ -0,0 +1,80 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x -= y is the same as x = x - y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.5_T2.2.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and String (primitive and object)
+ */
+
+//CHECK#1
+x = "1";
+x -= 1;
+if (x !== 0) {
+  $ERROR('#1: x = "1"; x -= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = 1;
+x -= "1";
+if (x !== 0) {
+  $ERROR('#2: x = 1; x -= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x -= 1;
+if (x !== 0) {
+  $ERROR('#3: x = new String("1"); x -= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = 1;
+x -= new String("1");
+if (x !== 0) {
+  $ERROR('#4: x = 1; x -= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#5
+x = "1";
+x -= new Number(1);
+if (x !== 0) {
+  $ERROR('#5: x = "1"; x -= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new Number(1);
+x -= "1";
+if (x !== 0) {
+  $ERROR('#6: x = new Number(1); x -= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new String("1");
+x -= new Number(1);
+if (x !== 0) {
+  $ERROR('#7: x = new String("1"); x -= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new Number(1);
+x -= new String("1");
+if (x !== 0) {
+  $ERROR('#8: x = new Number(1); x -= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#9
+x = "x";
+x -= 1;
+if (isNaN(x) !== true) {
+  $ERROR('#9: x = "x"; x -= 1; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#10
+x = 1;
+x -= "x";
+if (isNaN(x) !== true) {
+  $ERROR('#10: x = 1; x -= "x"; x === Not-a-Number. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.3.js
new file mode 100644
index 000000000..f7385f53f
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.3.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x -= y is the same as x = x - y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.5_T2.3.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Null
+ */
+
+//CHECK#1
+x = 1;
+x -= null;
+if (x !== 1) {
+  $ERROR('#1: x = 1; x -= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x -= 1;
+if (x !== -1) {
+  $ERROR('#2: x = null; x -= 1; x === -1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Number(1);
+x -= null;
+if (x !== 1) {
+  $ERROR('#3: x = new Number(1); x -= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x -= new Number(1);
+if (x !== -1) {
+  $ERROR('#4: x = null; x -= new Number(1); x === -1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.4.js
new file mode 100644
index 000000000..0c1c5375f
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.4.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x -= y is the same as x = x - y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.5_T2.4.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = 1;
+x -= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#1: x = 1; x -= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x -= 1;
+if (isNaN(x) !== true) {
+  $ERROR('#2: x = undefined; x -= 1; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Number(1);
+x -= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#3: x = new Number(1); x -= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x -= new Number(1);
+if (isNaN(x) !== true) {
+  $ERROR('#4: x = undefined; x -= new Number(1); x === Not-a-Number. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.5.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.5.js
new file mode 100644
index 000000000..c6c26409c
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.5.js
@@ -0,0 +1,66 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x -= y is the same as x = x - y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.5_T2.5.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Boolean (primitive and object)
+ */
+
+//CHECK#1
+x = true;
+x -= "1";
+if (x !== 0) {
+  $ERROR('#1: x = true; x -= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = "1";
+x -= true;
+if (x !== 0) {
+  $ERROR('#2: x = "1"; x -= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x -= "1";
+if (x !== 0) {
+  $ERROR('#3: x = new Boolean(true); x -= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = "1";
+x -= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = "1"; x -= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
+//CHECK#5
+x = true;
+x -= new String("1");
+if (x !== 0) {
+  $ERROR('#5: x = true; x -= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new String("1");
+x -= true;
+if (x !== 0) {
+  $ERROR('#6: x = new String("1"); x -= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new Boolean(true);
+x -= new String("1");
+if (x !== 0) {
+  $ERROR('#7: x = new Boolean(true); x -= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new String("1");
+x -= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#8: x = new String("1"); x -= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.6.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.6.js
new file mode 100644
index 000000000..39b17aeeb
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.6.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x -= y is the same as x = x - y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.5_T2.6.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = "1";
+x -= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#1: x = "1"; x -= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x -= "1";
+if (isNaN(x) !== true) {
+  $ERROR('#2: x = undefined; x -= "1"; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x -= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#3: x = new String("1"); x -= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x -= new String("1");
+if (isNaN(x) !== true) {
+  $ERROR('#4: x = undefined; x -= new String("1"); x === Not-a-Number. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.7.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.7.js
new file mode 100644
index 000000000..b6d0cc0a8
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.7.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x -= y is the same as x = x - y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.5_T2.7.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Null
+ */
+
+//CHECK#1
+x = "1";
+x -= null;
+if (x !== 1) {
+  $ERROR('#1: x = "1"; x -= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x -= "1";
+if (x !== -1) {
+  $ERROR('#2: x = null; x -= "1"; x === -1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x -= null;
+if (x !== 1) {
+  $ERROR('#3: x = new String("1"); x -= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x -= new String("1");
+if (x !== -1) {
+  $ERROR('#4: x = null; x -= new String("1"); x === -1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.8.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.8.js
new file mode 100644
index 000000000..61c68cfa3
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.8.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x -= y is the same as x = x - y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.5_T2.8.js
+ * @description Type(x) is different from Type(y) and both types vary between Boolean (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = true;
+x -= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#1: x = true; x -= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x -= true;
+if (isNaN(x) !== true) {
+  $ERROR('#2: x = undefined; x -= true; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x -= undefined;
+if (isNaN(x) !== true) {
+  $ERROR('#3: x = new Boolean(true); x -= undefined; x === Not-a-Number. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x -= new Boolean(true);
+if (isNaN(x) !== true) {
+  $ERROR('#4: x = undefined; x -= new Boolean(true); x === Not-a-Number. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.9.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.9.js
new file mode 100644
index 000000000..4881e2d8b
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.5_T2.9.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x -= y is the same as x = x - y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.5_T2.9.js
+ * @description Type(x) is different from Type(y) and both types vary between Boolean (primitive or object) and Null
+ */
+
+//CHECK#1
+x = true;
+x -= null;
+if (x !== 1) {
+  $ERROR('#1: x = true; x -= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x -= true;
+if (x !== -1) {
+  $ERROR('#2: x = null; x -= true; x === -1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x -= null;
+if (x !== 1) {
+  $ERROR('#3: x = new Boolean(true); x -= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x -= new Boolean(true);
+if (x !== -1) {
+  $ERROR('#4: x = null; x -= new Boolean(true); x === -1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T1.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T1.1.js
new file mode 100644
index 000000000..d4b6680cf
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T1.1.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x <<= y is the same as x = x << y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.6_T1.1.js
+ * @description Type(x) and Type(y) vary between primitive boolean and Boolean object
+ */
+
+//CHECK#1
+x = true;
+x <<= true;
+if (x !== 2) {
+  $ERROR('#1: x = true; x <<= true; x === 2. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new Boolean(true);
+x <<= true;
+if (x !== 2) {
+  $ERROR('#2: x = new Boolean(true); x <<= true; x === 2. Actual: ' + (x));
+}
+
+//CHECK#3
+x = true;
+x <<= new Boolean(true);
+if (x !== 2) {
+  $ERROR('#3: x = true; x <<= new Boolean(true); x === 2. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new Boolean(true);
+x <<= new Boolean(true);
+if (x !== 2) {
+  $ERROR('#4: x = new Boolean(true); x <<= new Boolean(true); x === 2. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T1.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T1.2.js
new file mode 100644
index 000000000..63493abb6
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T1.2.js
@@ -0,0 +1,39 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x <<= y is the same as x = x << y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.6_T1.2.js
+ * @description Type(x) and Type(y) vary between primitive number and Number object
+ */
+
+//CHECK#1
+x = 1;
+x <<= 1;
+if (x !== 2) {
+  $ERROR('#1: x = 1; x <<= 1; x === 2. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new Number(1);
+x <<= 1;
+if (x !== 2) {
+  $ERROR('#2: x = new Number(1); x <<= 1; x === 2. Actual: ' + (x));
+}
+
+//CHECK#3
+x = 1;
+x <<= new Number(1);
+if (x !== 2) {
+  $ERROR('#3: x = 1; x <<= new Number(1); x === 2. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new Number(1);
+x <<= new Number(1);
+if (x !== 2) {
+  $ERROR('#4: x = new Number(1); x <<= new Number(1); x === 2. Actual: ' + (x));
+}
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T1.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T1.3.js
new file mode 100644
index 000000000..8a31b37ed
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T1.3.js
@@ -0,0 +1,52 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x <<= y is the same as x = x << y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.6_T1.3.js
+ * @description Type(x) and Type(y) vary between primitive string and String object
+ */
+
+//CHECK#1
+x = "1";
+x <<= "1";
+if (x !== 2) {
+  $ERROR('#1: x = "1"; x <<= "1"; x === 2. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new String("1");
+x <<= "1";
+if (x !== 2) {
+  $ERROR('#2: x = new String("1"); x <<= "1"; x === 2. Actual: ' + (x));
+}
+
+//CHECK#3
+x = "1";
+x <<= new String("1");
+if (x !== 2) {
+  $ERROR('#3: x = "1"; x <<= new String("1"); x === 2. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new String("1");
+x <<= new String("1");
+if (x !== 2) {
+  $ERROR('#4: x = new String("1"); x <<= new String("1"); x === 2. Actual: ' + (x));
+}
+
+//CHECK#5
+x = "x";
+x <<= "1";
+if (x !== 0) {
+  $ERROR('#5: x = "x"; x <<= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#6
+x = "1";
+x <<= "x";
+if (x !== 1) {
+  $ERROR('#6: x = "1"; x <<= "x"; x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T1.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T1.4.js
new file mode 100644
index 000000000..1c1a81781
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T1.4.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x <<= y is the same as x = x << y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.6_T1.4.js
+ * @description Type(x) and Type(y) vary between Null and Undefined
+ */
+
+//CHECK#1
+x = null;
+x <<= undefined;
+if (x !== 0) {
+  $ERROR('#1: x = null; x <<= undefined; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x <<= null;
+if (x !== 0) {
+  $ERROR('#2: x = undefined; x <<= null; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = undefined;
+x <<= undefined;
+if (x !== 0) {
+  $ERROR('#3: x = undefined; x <<= undefined; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x <<= null;
+if (x !== 0) {
+  $ERROR('#4: x = null; x <<= null; x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.1.js
new file mode 100644
index 000000000..9348c745e
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.1.js
@@ -0,0 +1,66 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x <<= y is the same as x = x << y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.6_T2.1.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Boolean (primitive and object)
+ */
+
+//CHECK#1
+x = true;
+x <<= 1;
+if (x !== 2) {
+  $ERROR('#1: x = true; x <<= 1; x === 2. Actual: ' + (x));
+}
+
+//CHECK#2
+x = 1;
+x <<= true;
+if (x !== 2) {
+  $ERROR('#2: x = 1; x <<= true; x === 2. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x <<= 1;
+if (x !== 2) {
+  $ERROR('#3: x = new Boolean(true); x <<= 1; x === 2. Actual: ' + (x));
+}
+
+//CHECK#4
+x = 1;
+x <<= new Boolean(true);
+if (x !== 2) {
+  $ERROR('#4: x = 1; x <<= new Boolean(true); x === 2. Actual: ' + (x));
+}
+
+//CHECK#5
+x = true;
+x <<= new Number(1);
+if (x !== 2) {
+  $ERROR('#5: x = true; x <<= new Number(1); x === 2. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new Number(1);
+x <<= true;
+if (x !== 2) {
+  $ERROR('#6: x = new Number(1); x <<= true; x === 2. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new Boolean(true);
+x <<= new Number(1);
+if (x !== 2) {
+  $ERROR('#7: x = new Boolean(true); x <<= new Number(1); x === 2. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new Number(1);
+x <<= new Boolean(true);
+if (x !== 2) {
+  $ERROR('#8: x = new Number(1); x <<= new Boolean(true); x === 2. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.2.js
new file mode 100644
index 000000000..2cd913d8e
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.2.js
@@ -0,0 +1,80 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x <<= y is the same as x = x << y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.6_T2.2.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and String (primitive and object)
+ */
+
+//CHECK#1
+x = "1";
+x <<= 1;
+if (x !== 2) {
+  $ERROR('#1: x = "1"; x <<= 1; x === 2. Actual: ' + (x));
+}
+
+//CHECK#2
+x = 1;
+x <<= "1";
+if (x !== 2) {
+  $ERROR('#2: x = 1; x <<= "1"; x === 2. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x <<= 1;
+if (x !== 2) {
+  $ERROR('#3: x = new String("1"); x <<= 1; x === 2. Actual: ' + (x));
+}
+
+//CHECK#4
+x = 1;
+x <<= new String("1");
+if (x !== 2) {
+  $ERROR('#4: x = 1; x <<= new String("1"); x === 2. Actual: ' + (x));
+}
+
+//CHECK#5
+x = "1";
+x <<= new Number(1);
+if (x !== 2) {
+  $ERROR('#5: x = "1"; x <<= new Number(1); x === 2. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new Number(1);
+x <<= "1";
+if (x !== 2) {
+  $ERROR('#6: x = new Number(1); x <<= "1"; x === 2. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new String("1");
+x <<= new Number(1);
+if (x !== 2) {
+  $ERROR('#7: x = new String("1"); x <<= new Number(1); x === 2. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new Number(1);
+x <<= new String("1");
+if (x !== 2) {
+  $ERROR('#8: x = new Number(1); x <<= new String("1"); x === 2. Actual: ' + (x));
+}
+
+//CHECK#9
+x = "x";
+x <<= 1;
+if (x !== 0) {
+  $ERROR('#9: x = "x"; x <<= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#10
+x = 1;
+x <<= "x";
+if (x !== 1) {
+  $ERROR('#10: x = 1; x <<= "x"; x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.3.js
new file mode 100644
index 000000000..6040e1de8
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.3.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x <<= y is the same as x = x << y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.6_T2.3.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Null
+ */
+
+//CHECK#1
+x = 1;
+x <<= null;
+if (x !== 1) {
+  $ERROR('#1: x = 1; x <<= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x <<= 1;
+if (x !== 0) {
+  $ERROR('#2: x = null; x <<= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Number(1);
+x <<= null;
+if (x !== 1) {
+  $ERROR('#3: x = new Number(1); x <<= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x <<= new Number(1);
+if (x !== 0) {
+  $ERROR('#4: x = null; x <<= new Number(1); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.4.js
new file mode 100644
index 000000000..1eee51320
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.4.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x <<= y is the same as x = x << y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.6_T2.4.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = 1;
+x <<= undefined;
+if (x !== 1) {
+  $ERROR('#1: x = 1; x <<= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x <<= 1;
+if (x !== 0) {
+  $ERROR('#2: x = undefined; x <<= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Number(1);
+x <<= undefined;
+if (x !== 1) {
+  $ERROR('#3: x = new Number(1); x <<= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x <<= new Number(1);
+if (x !== 0) {
+  $ERROR('#4: x = undefined; x <<= new Number(1); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.5.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.5.js
new file mode 100644
index 000000000..7616e4e7c
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.5.js
@@ -0,0 +1,66 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x <<= y is the same as x = x << y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.6_T2.5.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Boolean (primitive and object)
+ */
+
+//CHECK#1
+x = true;
+x <<= "1";
+if (x !== 2) {
+  $ERROR('#1: x = true; x <<= "1"; x === 2. Actual: ' + (x));
+}
+
+//CHECK#2
+x = "1";
+x <<= true;
+if (x !== 2) {
+  $ERROR('#2: x = "1"; x <<= true; x === 2. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x <<= "1";
+if (x !== 2) {
+  $ERROR('#3: x = new Boolean(true); x <<= "1"; x === 2. Actual: ' + (x));
+}
+
+//CHECK#4
+x = "1";
+x <<= new Boolean(true);
+if (x !== 2) {
+  $ERROR('#4: x = "1"; x <<= new Boolean(true); x === 2. Actual: ' + (x));
+}
+
+//CHECK#5
+x = true;
+x <<= new String("1");
+if (x !== 2) {
+  $ERROR('#5: x = true; x <<= new String("1"); x === 2. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new String("1");
+x <<= true;
+if (x !== 2) {
+  $ERROR('#6: x = new String("1"); x <<= true; x === 2. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new Boolean(true);
+x <<= new String("1");
+if (x !== 2) {
+  $ERROR('#7: x = new Boolean(true); x <<= new String("1"); x === 2. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new String("1");
+x <<= new Boolean(true);
+if (x !== 2) {
+  $ERROR('#8: x = new String("1"); x <<= new Boolean(true); x === 2. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.6.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.6.js
new file mode 100644
index 000000000..6fbf4f4f2
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.6.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x <<= y is the same as x = x << y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.6_T2.6.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = "1";
+x <<= undefined;
+if (x !== 1) {
+  $ERROR('#1: x = "1"; x <<= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x <<= "1";
+if (x !== 0) {
+  $ERROR('#2: x = undefined; x <<= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x <<= undefined;
+if (x !== 1) {
+  $ERROR('#3: x = new String("1"); x <<= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x <<= new String("1");
+if (x !== 0) {
+  $ERROR('#4: x = undefined; x <<= new String("1"); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.7.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.7.js
new file mode 100644
index 000000000..ce324f83a
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.7.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x <<= y is the same as x = x << y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.6_T2.7.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Null
+ */
+
+//CHECK#1
+x = "1";
+x <<= null;
+if (x !== 1) {
+  $ERROR('#1: x = "1"; x <<= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x <<= "1";
+if (x !== 0) {
+  $ERROR('#2: x = null; x <<= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x <<= null;
+if (x !== 1) {
+  $ERROR('#3: x = new String("1"); x <<= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x <<= new String("1");
+if (x !== 0) {
+  $ERROR('#4: x = null; x <<= new String("1"); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.8.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.8.js
new file mode 100644
index 000000000..606ae17bc
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.8.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x <<= y is the same as x = x << y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.6_T2.8.js
+ * @description Type(x) is different from Type(y) and both types vary between Boolean (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = true;
+x <<= undefined;
+if (x !== 1) {
+  $ERROR('#1: x = true; x <<= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x <<= true;
+if (x !== 0) {
+  $ERROR('#2: x = undefined; x <<= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x <<= undefined;
+if (x !== 1) {
+  $ERROR('#3: x = new Boolean(true); x <<= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x <<= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = undefined; x <<= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.9.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.9.js
new file mode 100644
index 000000000..2b0820a85
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.6_T2.9.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x <<= y is the same as x = x << y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.6_T2.9.js
+ * @description Type(x) is different from Type(y) and both types vary between Boolean (primitive or object) and Null
+ */
+
+//CHECK#1
+x = true;
+x <<= null;
+if (x !== 1) {
+  $ERROR('#1: x = true; x <<= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x <<= true;
+if (x !== 0) {
+  $ERROR('#2: x = null; x <<= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x <<= null;
+if (x !== 1) {
+  $ERROR('#3: x = new Boolean(true); x <<= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x <<= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = null; x <<= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T1.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T1.1.js
new file mode 100644
index 000000000..aeb328d7c
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T1.1.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>= y is the same as x = x >> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.7_T1.1.js
+ * @description Type(x) and Type(y) vary between primitive boolean and Boolean object
+ */
+
+//CHECK#1
+x = true;
+x >>= true;
+if (x !== 0) {
+  $ERROR('#1: x = true; x >>= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new Boolean(true);
+x >>= true;
+if (x !== 0) {
+  $ERROR('#2: x = new Boolean(true); x >>= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = true;
+x >>= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#3: x = true; x >>= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new Boolean(true);
+x >>= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = new Boolean(true); x >>= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T1.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T1.2.js
new file mode 100644
index 000000000..dc83e1ad0
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T1.2.js
@@ -0,0 +1,39 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>= y is the same as x = x >> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.7_T1.2.js
+ * @description Type(x) and Type(y) vary between primitive number and Number object
+ */
+
+//CHECK#1
+x = 1;
+x >>= 1;
+if (x !== 0) {
+  $ERROR('#1: x = 1; x >>= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new Number(1);
+x >>= 1;
+if (x !== 0) {
+  $ERROR('#2: x = new Number(1); x >>= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = 1;
+x >>= new Number(1);
+if (x !== 0) {
+  $ERROR('#3: x = 1; x >>= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new Number(1);
+x >>= new Number(1);
+if (x !== 0) {
+  $ERROR('#4: x = new Number(1); x >>= new Number(1); x === 0. Actual: ' + (x));
+}
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T1.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T1.3.js
new file mode 100644
index 000000000..9513cf37d
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T1.3.js
@@ -0,0 +1,52 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>= y is the same as x = x >> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.7_T1.3.js
+ * @description Type(x) and Type(y) vary between primitive string and String object
+ */
+
+//CHECK#1
+x = "1";
+x >>= "1";
+if (x !== 0) {
+  $ERROR('#1: x = "1"; x >>= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new String("1");
+x >>= "1";
+if (x !== 0) {
+  $ERROR('#2: x = new String("1"); x >>= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = "1";
+x >>= new String("1");
+if (x !== 0) {
+  $ERROR('#3: x = "1"; x >>= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new String("1");
+x >>= new String("1");
+if (x !== 0) {
+  $ERROR('#4: x = new String("1"); x >>= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#5
+x = "x";
+x >>= "1";
+if (x !== 0) {
+  $ERROR('#5: x = "x"; x >>= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#6
+x = "1";
+x >>= "x";
+if (x !== 1) {
+  $ERROR('#6: x = "1"; x >>= "x"; x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T1.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T1.4.js
new file mode 100644
index 000000000..7195a5e44
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T1.4.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>= y is the same as x = x >> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.7_T1.4.js
+ * @description Type(x) and Type(y) vary between Null and Undefined
+ */
+
+//CHECK#1
+x = null;
+x >>= undefined;
+if (x !== 0) {
+  $ERROR('#1: x = null; x >>= undefined; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x >>= null;
+if (x !== 0) {
+  $ERROR('#2: x = undefined; x >>= null; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = undefined;
+x >>= undefined;
+if (x !== 0) {
+  $ERROR('#3: x = undefined; x >>= undefined; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x >>= null;
+if (x !== 0) {
+  $ERROR('#4: x = null; x >>= null; x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.1.js
new file mode 100644
index 000000000..8fa6a383c
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.1.js
@@ -0,0 +1,66 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>= y is the same as x = x >> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.7_T2.1.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Boolean (primitive and object)
+ */
+
+//CHECK#1
+x = true;
+x >>= 1;
+if (x !== 0) {
+  $ERROR('#1: x = true; x >>= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = 1;
+x >>= true;
+if (x !== 0) {
+  $ERROR('#2: x = 1; x >>= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x >>= 1;
+if (x !== 0) {
+  $ERROR('#3: x = new Boolean(true); x >>= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = 1;
+x >>= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = 1; x >>= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
+//CHECK#5
+x = true;
+x >>= new Number(1);
+if (x !== 0) {
+  $ERROR('#5: x = true; x >>= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new Number(1);
+x >>= true;
+if (x !== 0) {
+  $ERROR('#6: x = new Number(1); x >>= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new Boolean(true);
+x >>= new Number(1);
+if (x !== 0) {
+  $ERROR('#7: x = new Boolean(true); x >>= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new Number(1);
+x >>= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#8: x = new Number(1); x >>= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.2.js
new file mode 100644
index 000000000..87e69c0aa
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.2.js
@@ -0,0 +1,80 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>= y is the same as x = x >> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.7_T2.2.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and String (primitive and object)
+ */
+
+//CHECK#1
+x = "1";
+x >>= 1;
+if (x !== 0) {
+  $ERROR('#1: x = "1"; x >>= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = 1;
+x >>= "1";
+if (x !== 0) {
+  $ERROR('#2: x = 1; x >>= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x >>= 1;
+if (x !== 0) {
+  $ERROR('#3: x = new String("1"); x >>= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = 1;
+x >>= new String("1");
+if (x !== 0) {
+  $ERROR('#4: x = 1; x >>= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#5
+x = "1";
+x >>= new Number(1);
+if (x !== 0) {
+  $ERROR('#5: x = "1"; x >>= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new Number(1);
+x >>= "1";
+if (x !== 0) {
+  $ERROR('#6: x = new Number(1); x >>= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new String("1");
+x >>= new Number(1);
+if (x !== 0) {
+  $ERROR('#7: x = new String("1"); x >>= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new Number(1);
+x >>= new String("1");
+if (x !== 0) {
+  $ERROR('#8: x = new Number(1); x >>= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#9
+x = "x";
+x >>= 1;
+if (x !== 0) {
+  $ERROR('#9: x = "x"; x >>= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#10
+x = 1;
+x >>= "x";
+if (x !== 1) {
+  $ERROR('#10: x = 1; x >>= "x"; x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.3.js
new file mode 100644
index 000000000..0cf56fb53
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.3.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>= y is the same as x = x >> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.7_T2.3.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Null
+ */
+
+//CHECK#1
+x = 1;
+x >>= null;
+if (x !== 1) {
+  $ERROR('#1: x = 1; x >>= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x >>= 1;
+if (x !== 0) {
+  $ERROR('#2: x = null; x >>= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Number(1);
+x >>= null;
+if (x !== 1) {
+  $ERROR('#3: x = new Number(1); x >>= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x >>= new Number(1);
+if (x !== 0) {
+  $ERROR('#4: x = null; x >>= new Number(1); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.4.js
new file mode 100644
index 000000000..f9ad58a30
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.4.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>= y is the same as x = x >> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.7_T2.4.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = 1;
+x >>= undefined;
+if (x !== 1) {
+  $ERROR('#1: x = 1; x >>= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x >>= 1;
+if (x !== 0) {
+  $ERROR('#2: x = undefined; x >>= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Number(1);
+x >>= undefined;
+if (x !== 1) {
+  $ERROR('#3: x = new Number(1); x >>= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x >>= new Number(1);
+if (x !== 0) {
+  $ERROR('#4: x = undefined; x >>= new Number(1); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.5.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.5.js
new file mode 100644
index 000000000..bdc8b729f
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.5.js
@@ -0,0 +1,66 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>= y is the same as x = x >> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.7_T2.5.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Boolean (primitive and object)
+ */
+
+//CHECK#1
+x = true;
+x >>= "1";
+if (x !== 0) {
+  $ERROR('#1: x = true; x >>= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = "1";
+x >>= true;
+if (x !== 0) {
+  $ERROR('#2: x = "1"; x >>= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x >>= "1";
+if (x !== 0) {
+  $ERROR('#3: x = new Boolean(true); x >>= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = "1";
+x >>= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = "1"; x >>= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
+//CHECK#5
+x = true;
+x >>= new String("1");
+if (x !== 0) {
+  $ERROR('#5: x = true; x >>= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new String("1");
+x >>= true;
+if (x !== 0) {
+  $ERROR('#6: x = new String("1"); x >>= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new Boolean(true);
+x >>= new String("1");
+if (x !== 0) {
+  $ERROR('#7: x = new Boolean(true); x >>= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new String("1");
+x >>= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#8: x = new String("1"); x >>= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.6.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.6.js
new file mode 100644
index 000000000..970a3540b
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.6.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>= y is the same as x = x >> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.7_T2.6.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = "1";
+x >>= undefined;
+if (x !== 1) {
+  $ERROR('#1: x = "1"; x >>= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x >>= "1";
+if (x !== 0) {
+  $ERROR('#2: x = undefined; x >>= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x >>= undefined;
+if (x !== 1) {
+  $ERROR('#3: x = new String("1"); x >>= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x >>= new String("1");
+if (x !== 0) {
+  $ERROR('#4: x = undefined; x >>= new String("1"); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.7.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.7.js
new file mode 100644
index 000000000..7720b5512
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.7.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>= y is the same as x = x >> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.7_T2.7.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Null
+ */
+
+//CHECK#1
+x = "1";
+x >>= null;
+if (x !== 1) {
+  $ERROR('#1: x = "1"; x >>= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x >>= "1";
+if (x !== 0) {
+  $ERROR('#2: x = null; x >>= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x >>= null;
+if (x !== 1) {
+  $ERROR('#3: x = new String("1"); x >>= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x >>= new String("1");
+if (x !== 0) {
+  $ERROR('#4: x = null; x >>= new String("1"); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.8.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.8.js
new file mode 100644
index 000000000..05a4415a1
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.8.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>= y is the same as x = x >> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.7_T2.8.js
+ * @description Type(x) is different from Type(y) and both types vary between Boolean (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = true;
+x >>= undefined;
+if (x !== 1) {
+  $ERROR('#1: x = true; x >>= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x >>= true;
+if (x !== 0) {
+  $ERROR('#2: x = undefined; x >>= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x >>= undefined;
+if (x !== 1) {
+  $ERROR('#3: x = new Boolean(true); x >>= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x >>= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = undefined; x >>= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.9.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.9.js
new file mode 100644
index 000000000..ddfdbfc64
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.7_T2.9.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>= y is the same as x = x >> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.7_T2.9.js
+ * @description Type(x) is different from Type(y) and both types vary between Boolean (primitive or object) and Null
+ */
+
+//CHECK#1
+x = true;
+x >>= null;
+if (x !== 1) {
+  $ERROR('#1: x = true; x >>= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x >>= true;
+if (x !== 0) {
+  $ERROR('#2: x = null; x >>= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x >>= null;
+if (x !== 1) {
+  $ERROR('#3: x = new Boolean(true); x >>= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x >>= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = null; x >>= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T1.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T1.1.js
new file mode 100644
index 000000000..0b2e033dc
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T1.1.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>>= y is the same as x = x >>> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.8_T1.1.js
+ * @description Type(x) and Type(y) vary between primitive boolean and Boolean object
+ */
+
+//CHECK#1
+x = true;
+x >>>= true;
+if (x !== 0) {
+  $ERROR('#1: x = true; x >>>= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new Boolean(true);
+x >>>= true;
+if (x !== 0) {
+  $ERROR('#2: x = new Boolean(true); x >>>= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = true;
+x >>>= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#3: x = true; x >>>= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new Boolean(true);
+x >>>= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = new Boolean(true); x >>>= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T1.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T1.2.js
new file mode 100644
index 000000000..64cb86684
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T1.2.js
@@ -0,0 +1,39 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>>= y is the same as x = x >>> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.8_T1.2.js
+ * @description Type(x) and Type(y) vary between primitive number and Number object
+ */
+
+//CHECK#1
+x = 1;
+x >>>= 1;
+if (x !== 0) {
+  $ERROR('#1: x = 1; x >>>= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new Number(1);
+x >>>= 1;
+if (x !== 0) {
+  $ERROR('#2: x = new Number(1); x >>>= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = 1;
+x >>>= new Number(1);
+if (x !== 0) {
+  $ERROR('#3: x = 1; x >>>= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new Number(1);
+x >>>= new Number(1);
+if (x !== 0) {
+  $ERROR('#4: x = new Number(1); x >>>= new Number(1); x === 0. Actual: ' + (x));
+}
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T1.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T1.3.js
new file mode 100644
index 000000000..47f197886
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T1.3.js
@@ -0,0 +1,52 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>>= y is the same as x = x >>> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.8_T1.3.js
+ * @description Type(x) and Type(y) vary between primitive string and String object
+ */
+
+//CHECK#1
+x = "1";
+x >>>= "1";
+if (x !== 0) {
+  $ERROR('#1: x = "1"; x >>>= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new String("1");
+x >>>= "1";
+if (x !== 0) {
+  $ERROR('#2: x = new String("1"); x >>>= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = "1";
+x >>>= new String("1");
+if (x !== 0) {
+  $ERROR('#3: x = "1"; x >>>= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new String("1");
+x >>>= new String("1");
+if (x !== 0) {
+  $ERROR('#4: x = new String("1"); x >>>= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#5
+x = "x";
+x >>>= "1";
+if (x !== 0) {
+  $ERROR('#5: x = "x"; x >>>= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#6
+x = "1";
+x >>>= "x";
+if (x !== 1) {
+  $ERROR('#6: x = "1"; x >>>= "x"; x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T1.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T1.4.js
new file mode 100644
index 000000000..6464ffa82
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T1.4.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>>= y is the same as x = x >>> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.8_T1.4.js
+ * @description Type(x) and Type(y) vary between Null and Undefined
+ */
+
+//CHECK#1
+x = null;
+x >>>= undefined;
+if (x !== 0) {
+  $ERROR('#1: x = null; x >>>= undefined; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x >>>= null;
+if (x !== 0) {
+  $ERROR('#2: x = undefined; x >>>= null; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = undefined;
+x >>>= undefined;
+if (x !== 0) {
+  $ERROR('#3: x = undefined; x >>>= undefined; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x >>>= null;
+if (x !== 0) {
+  $ERROR('#4: x = null; x >>>= null; x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.1.js
new file mode 100644
index 000000000..f610d8278
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.1.js
@@ -0,0 +1,66 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>>= y is the same as x = x >>> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.8_T2.1.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Boolean (primitive and object)
+ */
+
+//CHECK#1
+x = true;
+x >>>= 1;
+if (x !== 0) {
+  $ERROR('#1: x = true; x >>>= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = 1;
+x >>>= true;
+if (x !== 0) {
+  $ERROR('#2: x = 1; x >>>= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x >>>= 1;
+if (x !== 0) {
+  $ERROR('#3: x = new Boolean(true); x >>>= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = 1;
+x >>>= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = 1; x >>>= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
+//CHECK#5
+x = true;
+x >>>= new Number(1);
+if (x !== 0) {
+  $ERROR('#5: x = true; x >>>= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new Number(1);
+x >>>= true;
+if (x !== 0) {
+  $ERROR('#6: x = new Number(1); x >>>= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new Boolean(true);
+x >>>= new Number(1);
+if (x !== 0) {
+  $ERROR('#7: x = new Boolean(true); x >>>= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new Number(1);
+x >>>= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#8: x = new Number(1); x >>>= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.2.js
new file mode 100644
index 000000000..9a1d719fe
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.2.js
@@ -0,0 +1,80 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>>= y is the same as x = x >>> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.8_T2.2.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and String (primitive and object)
+ */
+
+//CHECK#1
+x = "1";
+x >>>= 1;
+if (x !== 0) {
+  $ERROR('#1: x = "1"; x >>>= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = 1;
+x >>>= "1";
+if (x !== 0) {
+  $ERROR('#2: x = 1; x >>>= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x >>>= 1;
+if (x !== 0) {
+  $ERROR('#3: x = new String("1"); x >>>= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = 1;
+x >>>= new String("1");
+if (x !== 0) {
+  $ERROR('#4: x = 1; x >>>= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#5
+x = "1";
+x >>>= new Number(1);
+if (x !== 0) {
+  $ERROR('#5: x = "1"; x >>>= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new Number(1);
+x >>>= "1";
+if (x !== 0) {
+  $ERROR('#6: x = new Number(1); x >>>= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new String("1");
+x >>>= new Number(1);
+if (x !== 0) {
+  $ERROR('#7: x = new String("1"); x >>>= new Number(1); x === 0. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new Number(1);
+x >>>= new String("1");
+if (x !== 0) {
+  $ERROR('#8: x = new Number(1); x >>>= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#9
+x = "x";
+x >>>= 1;
+if (x !== 0) {
+  $ERROR('#9: x = "x"; x >>>= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#10
+x = 1;
+x >>>= "x";
+if (x !== 1) {
+  $ERROR('#10: x = 1; x >>>= "x"; x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.3.js
new file mode 100644
index 000000000..bf809a272
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.3.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>>= y is the same as x = x >>> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.8_T2.3.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Null
+ */
+
+//CHECK#1
+x = 1;
+x >>>= null;
+if (x !== 1) {
+  $ERROR('#1: x = 1; x >>>= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x >>>= 1;
+if (x !== 0) {
+  $ERROR('#2: x = null; x >>>= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Number(1);
+x >>>= null;
+if (x !== 1) {
+  $ERROR('#3: x = new Number(1); x >>>= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x >>>= new Number(1);
+if (x !== 0) {
+  $ERROR('#4: x = null; x >>>= new Number(1); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.4.js
new file mode 100644
index 000000000..4e034735f
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.4.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>>= y is the same as x = x >>> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.8_T2.4.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = 1;
+x >>>= undefined;
+if (x !== 1) {
+  $ERROR('#1: x = 1; x >>>= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x >>>= 1;
+if (x !== 0) {
+  $ERROR('#2: x = undefined; x >>>= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Number(1);
+x >>>= undefined;
+if (x !== 1) {
+  $ERROR('#3: x = new Number(1); x >>>= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x >>>= new Number(1);
+if (x !== 0) {
+  $ERROR('#4: x = undefined; x >>>= new Number(1); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.5.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.5.js
new file mode 100644
index 000000000..cf319f71d
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.5.js
@@ -0,0 +1,66 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>>= y is the same as x = x >>> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.8_T2.5.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Boolean (primitive and object)
+ */
+
+//CHECK#1
+x = true;
+x >>>= "1";
+if (x !== 0) {
+  $ERROR('#1: x = true; x >>>= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = "1";
+x >>>= true;
+if (x !== 0) {
+  $ERROR('#2: x = "1"; x >>>= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x >>>= "1";
+if (x !== 0) {
+  $ERROR('#3: x = new Boolean(true); x >>>= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = "1";
+x >>>= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = "1"; x >>>= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
+//CHECK#5
+x = true;
+x >>>= new String("1");
+if (x !== 0) {
+  $ERROR('#5: x = true; x >>>= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new String("1");
+x >>>= true;
+if (x !== 0) {
+  $ERROR('#6: x = new String("1"); x >>>= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new Boolean(true);
+x >>>= new String("1");
+if (x !== 0) {
+  $ERROR('#7: x = new Boolean(true); x >>>= new String("1"); x === 0. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new String("1");
+x >>>= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#8: x = new String("1"); x >>>= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.6.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.6.js
new file mode 100644
index 000000000..d73b02dd2
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.6.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>>= y is the same as x = x >>> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.8_T2.6.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = "1";
+x >>>= undefined;
+if (x !== 1) {
+  $ERROR('#1: x = "1"; x >>>= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x >>>= "1";
+if (x !== 0) {
+  $ERROR('#2: x = undefined; x >>>= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x >>>= undefined;
+if (x !== 1) {
+  $ERROR('#3: x = new String("1"); x >>>= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x >>>= new String("1");
+if (x !== 0) {
+  $ERROR('#4: x = undefined; x >>>= new String("1"); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.7.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.7.js
new file mode 100644
index 000000000..b62931e6b
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.7.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>>= y is the same as x = x >>> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.8_T2.7.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Null
+ */
+
+//CHECK#1
+x = "1";
+x >>>= null;
+if (x !== 1) {
+  $ERROR('#1: x = "1"; x >>>= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x >>>= "1";
+if (x !== 0) {
+  $ERROR('#2: x = null; x >>>= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x >>>= null;
+if (x !== 1) {
+  $ERROR('#3: x = new String("1"); x >>>= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x >>>= new String("1");
+if (x !== 0) {
+  $ERROR('#4: x = null; x >>>= new String("1"); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.8.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.8.js
new file mode 100644
index 000000000..a463cca10
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.8.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>>= y is the same as x = x >>> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.8_T2.8.js
+ * @description Type(x) is different from Type(y) and both types vary between Boolean (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = true;
+x >>>= undefined;
+if (x !== 1) {
+  $ERROR('#1: x = true; x >>>= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x >>>= true;
+if (x !== 0) {
+  $ERROR('#2: x = undefined; x >>>= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x >>>= undefined;
+if (x !== 1) {
+  $ERROR('#3: x = new Boolean(true); x >>>= undefined; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x >>>= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = undefined; x >>>= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.9.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.9.js
new file mode 100644
index 000000000..e055c7d2d
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.8_T2.9.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x >>>= y is the same as x = x >>> y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.8_T2.9.js
+ * @description Type(x) is different from Type(y) and both types vary between Boolean (primitive or object) and Null
+ */
+
+//CHECK#1
+x = true;
+x >>>= null;
+if (x !== 1) {
+  $ERROR('#1: x = true; x >>>= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x >>>= true;
+if (x !== 0) {
+  $ERROR('#2: x = null; x >>>= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x >>>= null;
+if (x !== 1) {
+  $ERROR('#3: x = new Boolean(true); x >>>= null; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x >>>= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = null; x >>>= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T1.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T1.1.js
new file mode 100644
index 000000000..13be4e002
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T1.1.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x &= y is the same as x = x & y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.9_T1.1.js
+ * @description Type(x) and Type(y) vary between primitive boolean and Boolean object
+ */
+
+//CHECK#1
+x = true;
+x &= true;
+if (x !== 1) {
+  $ERROR('#1: x = true; x &= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new Boolean(true);
+x &= true;
+if (x !== 1) {
+  $ERROR('#2: x = new Boolean(true); x &= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = true;
+x &= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#3: x = true; x &= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new Boolean(true);
+x &= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#4: x = new Boolean(true); x &= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T1.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T1.2.js
new file mode 100644
index 000000000..cc1eb514b
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T1.2.js
@@ -0,0 +1,39 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x &= y is the same as x = x & y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.9_T1.2.js
+ * @description Type(x) and Type(y) vary between primitive number and Number object
+ */
+
+//CHECK#1
+x = 1;
+x &= 1;
+if (x !== 1) {
+  $ERROR('#1: x = 1; x &= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new Number(1);
+x &= 1;
+if (x !== 1) {
+  $ERROR('#2: x = new Number(1); x &= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = 1;
+x &= new Number(1);
+if (x !== 1) {
+  $ERROR('#3: x = 1; x &= new Number(1); x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new Number(1);
+x &= new Number(1);
+if (x !== 1) {
+  $ERROR('#4: x = new Number(1); x &= new Number(1); x === 1. Actual: ' + (x));
+}
+
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T1.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T1.3.js
new file mode 100644
index 000000000..e845b3c9d
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T1.3.js
@@ -0,0 +1,52 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x &= y is the same as x = x & y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.9_T1.3.js
+ * @description Type(x) and Type(y) vary between primitive string and String object
+ */
+
+//CHECK#1
+x = "1";
+x &= "1";
+if (x !== 1) {
+  $ERROR('#1: x = "1"; x &= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = new String("1");
+x &= "1";
+if (x !== 1) {
+  $ERROR('#2: x = new String("1"); x &= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = "1";
+x &= new String("1");
+if (x !== 1) {
+  $ERROR('#3: x = "1"; x &= new String("1"); x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = new String("1");
+x &= new String("1");
+if (x !== 1) {
+  $ERROR('#4: x = new String("1"); x &= new String("1"); x === 1. Actual: ' + (x));
+}
+
+//CHECK#5
+x = "x";
+x &= "1";
+if (x !== 0) {
+  $ERROR('#5: x = "x"; x &= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#6
+x = "1";
+x &= "x";
+if (x !== 0) {
+  $ERROR('#6: x = "1"; x &= "x"; x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T1.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T1.4.js
new file mode 100644
index 000000000..dd93cbb91
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T1.4.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x &= y is the same as x = x & y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.9_T1.4.js
+ * @description Type(x) and Type(y) vary between Null and Undefined
+ */
+
+//CHECK#1
+x = null;
+x &= undefined;
+if (x !== 0) {
+  $ERROR('#1: x = null; x &= undefined; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x &= null;
+if (x !== 0) {
+  $ERROR('#2: x = undefined; x &= null; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = undefined;
+x &= undefined;
+if (x !== 0) {
+  $ERROR('#3: x = undefined; x &= undefined; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x &= null;
+if (x !== 0) {
+  $ERROR('#4: x = null; x &= null; x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.1.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.1.js
new file mode 100644
index 000000000..05cd8f837
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.1.js
@@ -0,0 +1,66 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x &= y is the same as x = x & y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.9_T2.1.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Boolean (primitive and object)
+ */
+
+//CHECK#1
+x = true;
+x &= 1;
+if (x !== 1) {
+  $ERROR('#1: x = true; x &= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = 1;
+x &= true;
+if (x !== 1) {
+  $ERROR('#2: x = 1; x &= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x &= 1;
+if (x !== 1) {
+  $ERROR('#3: x = new Boolean(true); x &= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = 1;
+x &= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#4: x = 1; x &= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
+//CHECK#5
+x = true;
+x &= new Number(1);
+if (x !== 1) {
+  $ERROR('#5: x = true; x &= new Number(1); x === 1. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new Number(1);
+x &= true;
+if (x !== 1) {
+  $ERROR('#6: x = new Number(1); x &= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new Boolean(true);
+x &= new Number(1);
+if (x !== 1) {
+  $ERROR('#7: x = new Boolean(true); x &= new Number(1); x === 1. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new Number(1);
+x &= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#8: x = new Number(1); x &= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.2.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.2.js
new file mode 100644
index 000000000..b394dd6e7
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.2.js
@@ -0,0 +1,80 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x &= y is the same as x = x & y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.9_T2.2.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and String (primitive and object)
+ */
+
+//CHECK#1
+x = "1";
+x &= 1;
+if (x !== 1) {
+  $ERROR('#1: x = "1"; x &= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = 1;
+x &= "1";
+if (x !== 1) {
+  $ERROR('#2: x = 1; x &= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x &= 1;
+if (x !== 1) {
+  $ERROR('#3: x = new String("1"); x &= 1; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = 1;
+x &= new String("1");
+if (x !== 1) {
+  $ERROR('#4: x = 1; x &= new String("1"); x === 1. Actual: ' + (x));
+}
+
+//CHECK#5
+x = "1";
+x &= new Number(1);
+if (x !== 1) {
+  $ERROR('#5: x = "1"; x &= new Number(1); x === 1. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new Number(1);
+x &= "1";
+if (x !== 1) {
+  $ERROR('#6: x = new Number(1); x &= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new String("1");
+x &= new Number(1);
+if (x !== 1) {
+  $ERROR('#7: x = new String("1"); x &= new Number(1); x === 1. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new Number(1);
+x &= new String("1");
+if (x !== 1) {
+  $ERROR('#8: x = new Number(1); x &= new String("1"); x === 1. Actual: ' + (x));
+}
+
+//CHECK#9
+x = "x";
+x &= 1;
+if (x !== 0) {
+  $ERROR('#9: x = "x"; x &= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#10
+x = 1;
+x &= "x";
+if (x !== 0) {
+  $ERROR('#10: x = 1; x &= "x"; x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.3.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.3.js
new file mode 100644
index 000000000..b4150a583
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.3.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x &= y is the same as x = x & y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.9_T2.3.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Null
+ */
+
+//CHECK#1
+x = 1;
+x &= null;
+if (x !== 0) {
+  $ERROR('#1: x = 1; x &= null; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x &= 1;
+if (x !== 0) {
+  $ERROR('#2: x = null; x &= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Number(1);
+x &= null;
+if (x !== 0) {
+  $ERROR('#3: x = new Number(1); x &= null; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x &= new Number(1);
+if (x !== 0) {
+  $ERROR('#4: x = null; x &= new Number(1); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.4.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.4.js
new file mode 100644
index 000000000..f7bb4d4d8
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.4.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x &= y is the same as x = x & y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.9_T2.4.js
+ * @description Type(x) is different from Type(y) and both types vary between Number (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = 1;
+x &= undefined;
+if (x !== 0) {
+  $ERROR('#1: x = 1; x &= undefined; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x &= 1;
+if (x !== 0) {
+  $ERROR('#2: x = undefined; x &= 1; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Number(1);
+x &= undefined;
+if (x !== 0) {
+  $ERROR('#3: x = new Number(1); x &= undefined; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x &= new Number(1);
+if (x !== 0) {
+  $ERROR('#4: x = undefined; x &= new Number(1); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.5.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.5.js
new file mode 100644
index 000000000..a9ce33f78
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.5.js
@@ -0,0 +1,66 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x &= y is the same as x = x & y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.9_T2.5.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Boolean (primitive and object)
+ */
+
+//CHECK#1
+x = true;
+x &= "1";
+if (x !== 1) {
+  $ERROR('#1: x = true; x &= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#2
+x = "1";
+x &= true;
+if (x !== 1) {
+  $ERROR('#2: x = "1"; x &= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x &= "1";
+if (x !== 1) {
+  $ERROR('#3: x = new Boolean(true); x &= "1"; x === 1. Actual: ' + (x));
+}
+
+//CHECK#4
+x = "1";
+x &= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#4: x = "1"; x &= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
+//CHECK#5
+x = true;
+x &= new String("1");
+if (x !== 1) {
+  $ERROR('#5: x = true; x &= new String("1"); x === 1. Actual: ' + (x));
+}
+
+//CHECK#6
+x = new String("1");
+x &= true;
+if (x !== 1) {
+  $ERROR('#6: x = new String("1"); x &= true; x === 1. Actual: ' + (x));
+}
+
+//CHECK#7
+x = new Boolean(true);
+x &= new String("1");
+if (x !== 1) {
+  $ERROR('#7: x = new Boolean(true); x &= new String("1"); x === 1. Actual: ' + (x));
+}
+
+//CHECK#8
+x = new String("1");
+x &= new Boolean(true);
+if (x !== 1) {
+  $ERROR('#8: x = new String("1"); x &= new Boolean(true); x === 1. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.6.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.6.js
new file mode 100644
index 000000000..2a62b9723
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.6.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x &= y is the same as x = x & y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.9_T2.6.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = "1";
+x &= undefined;
+if (x !== 0) {
+  $ERROR('#1: x = "1"; x &= undefined; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x &= "1";
+if (x !== 0) {
+  $ERROR('#2: x = undefined; x &= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x &= undefined;
+if (x !== 0) {
+  $ERROR('#3: x = new String("1"); x &= undefined; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x &= new String("1");
+if (x !== 0) {
+  $ERROR('#4: x = undefined; x &= new String("1"); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.7.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.7.js
new file mode 100644
index 000000000..b9303bf5f
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.7.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x &= y is the same as x = x & y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.9_T2.7.js
+ * @description Type(x) is different from Type(y) and both types vary between String (primitive or object) and Null
+ */
+
+//CHECK#1
+x = "1";
+x &= null;
+if (x !== 0) {
+  $ERROR('#1: x = "1"; x &= null; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x &= "1";
+if (x !== 0) {
+  $ERROR('#2: x = null; x &= "1"; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new String("1");
+x &= null;
+if (x !== 0) {
+  $ERROR('#3: x = new String("1"); x &= null; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x &= new String("1");
+if (x !== 0) {
+  $ERROR('#4: x = null; x &= new String("1"); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.8.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.8.js
new file mode 100644
index 000000000..0e4db1ffe
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.8.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x &= y is the same as x = x & y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.9_T2.8.js
+ * @description Type(x) is different from Type(y) and both types vary between Boolean (primitive or object) and Undefined
+ */
+
+//CHECK#1
+x = true;
+x &= undefined;
+if (x !== 0) {
+  $ERROR('#1: x = true; x &= undefined; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = undefined;
+x &= true;
+if (x !== 0) {
+  $ERROR('#2: x = undefined; x &= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x &= undefined;
+if (x !== 0) {
+  $ERROR('#3: x = new Boolean(true); x &= undefined; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = undefined;
+x &= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = undefined; x &= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.9.js b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.9.js
new file mode 100644
index 000000000..3e5a05304
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/S11.13.2_A4.9_T2.9.js
@@ -0,0 +1,38 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production x &= y is the same as x = x & y
+ *
+ * @path ch11/11.13/11.13.2/S11.13.2_A4.9_T2.9.js
+ * @description Type(x) is different from Type(y) and both types vary between Boolean (primitive or object) and Null
+ */
+
+//CHECK#1
+x = true;
+x &= null;
+if (x !== 0) {
+  $ERROR('#1: x = true; x &= null; x === 0. Actual: ' + (x));
+}
+
+//CHECK#2
+x = null;
+x &= true;
+if (x !== 0) {
+  $ERROR('#2: x = null; x &= true; x === 0. Actual: ' + (x));
+}
+
+//CHECK#3
+x = new Boolean(true);
+x &= null;
+if (x !== 0) {
+  $ERROR('#3: x = new Boolean(true); x &= null; x === 0. Actual: ' + (x));
+}
+
+//CHECK#4
+x = null;
+x &= new Boolean(true);
+if (x !== 0) {
+  $ERROR('#4: x = null; x &= new Boolean(true); x === 0. Actual: ' + (x));
+}
+
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/browser.js b/js/src/tests/test262/ch11/11.13/11.13.2/browser.js
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/browser.js
diff --git a/js/src/tests/test262/ch11/11.13/11.13.2/shell.js b/js/src/tests/test262/ch11/11.13/11.13.2/shell.js
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/11.13.2/shell.js
diff --git a/js/src/tests/test262/ch11/11.13/browser.js b/js/src/tests/test262/ch11/11.13/browser.js
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/browser.js
diff --git a/js/src/tests/test262/ch11/11.13/shell.js b/js/src/tests/test262/ch11/11.13/shell.js
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.13/shell.js