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27 lines
784 B
JavaScript
27 lines
784 B
JavaScript
// 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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es6id: 19.1.2.1
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description: Invoked with a source whose own property keys cannot be retrieved
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info: |
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[...]
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5. For each element nextSource of sources, in ascending index order,
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a. If nextSource is undefined or null, let keys be an empty List.
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b. Else,
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i. Let from be ToObject(nextSource).
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ii. ReturnIfAbrupt(from).
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iii. Let keys be from.[[OwnPropertyKeys]]().
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iv. ReturnIfAbrupt(keys).
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features: [Proxy]
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---*/
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var source = new Proxy({}, {
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ownKeys: function() {
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throw new Test262Error();
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}
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});
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assert.throws(Test262Error, function() {
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Object.assign({}, source);
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});
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