blob: e9a36014a7cf394b9c4b563e952ba0087575e834 [file] [log] [blame]
/// Copyright (c) 2009 Microsoft Corporation
///
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/*
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.
*/
ES5Harness.registerTest( {
id: "11.4.1-4.a-10",
path: "TestCases/chapter11/11.4/11.4.1/11.4.1-4.a-10.js",
description: "delete operator returns true for property (stringify) defined on built-in object (JSON)",
test: 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 screws up the attributes */;
}
}
});