mirror of https://github.com/tc39/test262.git
36 lines
910 B
JavaScript
36 lines
910 B
JavaScript
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// Copyright (C) 2015 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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description: >
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If the Initializer is present and v is undefined, the Initializer should be
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evaluated and the result assigned to the target reference.
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es6id: 12.14.5.4
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---*/
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var result, value, x;
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value = {};
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result = { x = 1 } = value;
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assert.sameValue(result, value);
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assert.sameValue(x, 1, 'no property defined');
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value = { x: 2 };
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result = { x = 1 } = value;
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assert.sameValue(result, value);
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assert.sameValue(x, 2, 'own property defined (truthy value)');
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value = { x: null };
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result = { x = 1 } = value;
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assert.sameValue(result, value);
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assert.sameValue(x, null, 'own property defined (`null`)');
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value = { x: undefined };
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result = { x = 1 } = value;
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assert.sameValue(result, value);
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assert.sameValue(x, 1, 'own property defined (`undefined`)');
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