1 files changed, 35 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/for-in/12.6.4-1.js b/js/src/tests/test262/language/statements/for-in/12.6.4-1.js
new file mode 100644
index 0000000000..ef470c7b36
--- /dev/null
+++ b/js/src/tests/test262/language/statements/for-in/12.6.4-1.js
@@ -0,0 +1,35 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 12.6.4-1
+description: >
+    The for-in Statement - a property name must not be visited more
+    than once in any enumeration.
+---*/
+
+        var obj = { prop1: "abc", prop2: "bbc", prop3: "cnn" };
+
+        var countProp1 = 0;
+        var countProp2 = 0;
+        var countProp3 = 0;
+
+        for (var p in obj) {
+            if (obj.hasOwnProperty(p)) {
+                if (p === "prop1") {
+                    countProp1++;
+                }
+                if (p === "prop2") {
+                    countProp2++;
+                }
+                if (p === "prop3") {
+                    countProp3++;
+                }
+            }
+        }
+
+assert.sameValue(countProp1, 1, 'countProp1');
+assert.sameValue(countProp2, 1, 'countProp2');
+assert.sameValue(countProp3, 1, 'countProp3');
+
+reportCompare(0, 0);