1 files changed, 33 insertions, 0 deletions
diff --git a/js/src/tests/test262/ch11/11.4/11.4.1/11.4.1-4.a-10.js b/js/src/tests/test262/ch11/11.4/11.4.1/11.4.1-4.a-10.js
new file mode 100644
index 000000000..7a515d725
--- /dev/null
+++ b/js/src/tests/test262/ch11/11.4/11.4.1/11.4.1-4.a-10.js
@@ -0,0 +1,33 @@
+/// 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.
+/**
+ * This test is actually testing the [[Delete]] internal method (8.12.8). Since the
+ * language provides no way to directly exercise [[Delete]], the tests are placed here.
+ *
+ * @path ch11/11.4/11.4.1/11.4.1-4.a-10.js
+ * @description delete operator returns true for property (stringify) defined on built-in object (JSON)
+ */
+
+
+function testcase() {
+  try {
+      var o = JSON.stringify;
+	  var desc;
+	  try {
+	  	desc = Object.getOwnPropertyDescriptor(JSON, 'stringify')
+	  } 
+	  catch (e) {
+	  };
+      var d = delete JSON.stringify;
+      if (d === true && JSON.stringify === undefined) {
+        return true;
+      }
+  } finally {
+    if (desc) Object.defineProperty(JSON, 'stringify', desc)
+	else JSON.stringify = o  /* this branch messes up the attributes */;
+  }
+ }
+runTestCase(testcase);