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44 lines
1.3 KiB
JavaScript
44 lines
1.3 KiB
JavaScript
// Copyright (C) 2016 Jordan Harband. 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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description: Object.getOwnPropertyDescriptors does not see inherited properties.
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esid: pending
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author: Jordan Harband
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---*/
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var F = function () {};
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F.prototype.a = {};
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F.prototype.b = {};
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var f = new F();
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var bValue = {};
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f.b = bValue; // shadow the prototype
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Object.defineProperty(f, 'c', {
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enumerable: false,
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configurable: true,
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writable: false,
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value: {}
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}); // solely an own property
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var result = Object.getOwnPropertyDescriptors(f);
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assert.sameValue(!!result.b, true, 'b has a descriptor');
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assert.sameValue(!!result.c, true, 'c has a descriptor');
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assert.sameValue(result.b.enumerable, true, 'b is enumerable');
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assert.sameValue(result.b.configurable, true, 'b is configurable');
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assert.sameValue(result.b.writable, true, 'b is writable');
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assert.sameValue(result.b.value, bValue, 'b’s value is `bValue`');
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assert.sameValue(result.c.enumerable, false, 'c is enumerable');
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assert.sameValue(result.c.configurable, true, 'c is configurable');
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assert.sameValue(result.c.writable, false, 'c is writable');
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assert.sameValue(result.c.value, f.c, 'c’s value is `f.c`');
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assert.sameValue(
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Object.keys(result).length,
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2,
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'result has same number of own property names as f'
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);
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