e6d57a9f66
This flag has been on by default since Chrome 61. Bug: v8:5549 Cq-Include-Trybots: master.tryserver.v8:v8_linux_noi18n_rel_ng Change-Id: I81c34d1d3a7dbd219acce2cdf0cf4917eb484002 Reviewed-on: https://chromium-review.googlesource.com/738312 Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org> Commit-Queue: Adam Klein <adamk@chromium.org> Cr-Commit-Position: refs/heads/master@{#48945}
110 lines
2.7 KiB
JavaScript
110 lines
2.7 KiB
JavaScript
// Copyright 2016 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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var x = {a: 1};
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var y = { ...x};
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assertEquals(x, y);
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assertEquals({}, y = { ...{} } );
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assertEquals({}, y = { ...undefined });
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assertEquals({}, y = { ...null });
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assertEquals({}, y = { ...1 });
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assertEquals({0: 'f', 1: 'o', 2: 'o'}, y = { ...'foo' });
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assertEquals({0: 0, 1: 1}, y = { ...[0, 1] });
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assertEquals({}, { ...new Proxy({}, {}) });
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assertEquals({a: 2}, y = { ...x, a: 2 });
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assertEquals({a: 1, b: 1}, y = { ...x, b: 1 });
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assertEquals({a: 1}, y = { a: 2, ...x });
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assertEquals({a: 1, b: 1}, y = { a:2, ...x, b: 1 });
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assertEquals({a: 3}, y = { a: 2, ...x, a: 3 });
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var z = { b: 1}
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assertEquals({a: 1, b: 1}, y = { ...x, ...z });
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assertEquals({a: 1, b: 1}, y = { a: 2, ...x, ...z });
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assertEquals({a: 1, b: 1}, y = { b: 2, ...z, ...x });
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assertEquals({a: 1, b: 1}, y = { a: 1, ...x, b: 2, ...z });
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assertEquals({a: 1, b: 2}, y = { a: 1, ...x, ...z, b: 2 });
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assertEquals({a: 2, b: 2}, y = { ...x, ...z, a:2, b: 2 });
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var x = {}
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Object.defineProperty(x, 'a', {
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enumerable: false,
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configurable: false,
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writable: false,
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value: 1
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});
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assertEquals({}, { ...x });
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var x = {}
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Object.defineProperty(x, 'a', {
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enumerable: true,
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configurable: false,
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writable: false,
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value: 1
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});
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var y = { ...x };
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var prop = Object.getOwnPropertyDescriptor(y, 'a');
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assertEquals(prop.value, 1);
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assertTrue(prop.enumerable);
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assertTrue(prop.configurable);
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assertTrue(prop.writable);
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var x = { __proto__: z }
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assertEquals({}, { ...x });
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var x = {
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get a() { return 1; },
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set a(_) { assertUnreachable("setter called"); },
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};
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assertEquals({ a: 1 }, y = { ...x });
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var x = {
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method() { return 1; },
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};
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assertEquals(x, y = { ...x });
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var x = {
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*gen() { return {value: 1, done: true} ; },
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};
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assertEquals(x, y = { ...x });
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var x = {
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get a() { throw new Error(); },
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};
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assertThrows(() => { y = { ...x } });
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var p = new Proxy({}, {
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ownKeys() { throw new Error(); }
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});
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assertThrows(() => { y = { ...p } });
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var p = new Proxy({}, {
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ownKeys() { [1]; },
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get() { throw new Error(); }
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});
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assertThrows(() => { y = { ...p } });
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var p = new Proxy({}, {
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ownKeys() { [1]; },
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getOwnPropertyDescriptor() { throw new Error(); }
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});
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assertThrows(() => { y = { ...p } });
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var p = new Proxy(z, {
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ownKeys() { return Object.keys(z); },
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get(_, prop) { return z[prop]; },
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getOwnPropertyDescriptor(_, prop) {
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return Object.getOwnPropertyDescriptor(z, prop);
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},
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});
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assertEquals(z, y = { ...p });
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var x = { a:1 };
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assertEquals(x, y = { set a(_) { throw new Error(); }, ...x });
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var x = { a:1 };
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assertEquals(x, y = { get a() { throw new Error(); }, ...x });
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