js/src/tests/test262/language/expressions/delete/11.4.1-4.a-1.js


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// Copyright (c) 2012 Ecma International.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
info: |
    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.
esid: sec-delete-operator-runtime-semantics-evaluation
description: >
    delete operator returns true when deleting a configurable data
    property
---*/

var o = {};

var desc = {
  value: 1,
  configurable: true,
};
Object.defineProperty(o, 'foo', desc);

var d = delete o.foo;

assert.sameValue(d, true, 'd');
assert.sameValue(o.hasOwnProperty('foo'), false, 'o.hasOwnProperty("foo")');

reportCompare(0, 0);