test/language/expressions/delete/11.4.1-4.a-9.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.
es5id: 11.4.1-4.a-9
description: >
    delete operator returns false when deleting a non-configurable
    data property (Math.LN2)
flags: [noStrict]
---*/

  var d = delete Math.LN2;

assert.sameValue(d, false, 'd');