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+/// 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 ch11/11.4/11.4.1/11.4.4-4.a-3-s.js
+ * @description delete operator throws TypeError when deleting a non-configurable data property in strict mode
+ * @onlyStrict
+ */
+
+
+function testcase() {
+ 'use strict';
+
+ var o = {};
+ var desc = { value : 1 }; // all other attributes default to false
+ Object.defineProperty(o, "foo", desc);
+
+ // Now, deleting o.foo should throw TypeError because [[Configurable]] on foo is false.
+ try {
+ delete o.foo;
+ return false;
+ }
+ catch (e) {
+ return (e instanceof TypeError);
+ }
+ }
+runTestCase(testcase);