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https://github.com/tc39/test262.git
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56036e4064
- Remove no longer needed noStrict flags. - Change tests to use propertyHelper.js for strict mode compatibility. - Add tests for return value of `delete` operator, e.g. `delete Array.prototype === false`. - Add non-writable tests for global NaN property. - Split some tests to run in strict mode. - Change tests with global `var length` declaration to use a different variable name for browser environments. - Merge duplicated tests symbol-data-property-configurable-non-strict and symbol-data-property-configurable-strict. - Merge duplicated tests symbol-data-property-writable-non-strict and symbol-data-property-writable-strict. - (And a small change in propertyHelper to reduce code duplication in function call.)
39 lines
1.2 KiB
JavaScript
39 lines
1.2 KiB
JavaScript
// Copyright (C) Copyright 2013 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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es6id: 19.1.2.4
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description: >
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Symbol used as property for writable data property definition
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---*/
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var sym = Symbol();
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var obj = {};
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Object.defineProperty(obj, sym, {
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value: 1,
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writable: true
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});
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assert.sameValue(sym in obj, true, "The result of `sym in obj` is `true`");
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assert.sameValue(
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Object.hasOwnProperty.call(obj, sym),
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true,
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"`Object.hasOwnProperty.call(obj, sym)` returns `true`"
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);
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var desc = Object.getOwnPropertyDescriptor(obj, sym);
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assert.sameValue(desc.value, 1, "The value of `desc.value` is `1`");
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assert.sameValue(desc.configurable, false, "The value of `desc.configurable` is `false`");
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assert.sameValue(desc.writable, true, "The value of `desc.writable` is `true`");
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assert.sameValue(desc.enumerable, false, "The value of `desc.enumerable` is `false`");
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assert.sameValue(
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Object.prototype.propertyIsEnumerable.call(obj, sym),
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false,
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"`Object.prototype.propertyIsEnumerable.call(obj, sym)` returns `false`"
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);
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obj[sym] = 2;
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assert.sameValue(obj[sym], 2, "The value of `obj[sym]` is `2`");
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