test262/test/language/expressions/delete/11.4.1-4.a-8-s.js

20 lines
651 B
JavaScript

// 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-8-s
description: >
delete operator throws TypeError when deleting a non-configurable
data property in strict mode
flags: [onlyStrict]
includes: [fnGlobalObject.js]
---*/
// NaN (15.1.1.1) has [[Configurable]] set to false.
assert.throws(TypeError, function() {
delete fnGlobalObject().NaN;
});