test262/test/language/expressions/delete/11.4.1-4-a-1-s.js

21 lines
548 B
JavaScript

// Copyright (c) 2012 Ecma International. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es5id: 11.4.1-4-a-1-s
description: >
Strict Mode - TypeError is thrown when deleting non-configurable
data property
flags: [onlyStrict]
---*/
var obj = {};
Object.defineProperty(obj, "prop", {
value: "abc",
configurable: false
});
assert.throws(TypeError, function() {
delete obj.prop;
});
assert.sameValue(obj.prop, "abc", 'obj.prop');