Add m-esr52 at 52.6.0

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);