1 files changed, 38 insertions, 0 deletions
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));
+}
+