45 lines
1000 B
JavaScript
45 lines
1000 B
JavaScript
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// Copyright 2017 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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// Flags: --allow-natives-syntax
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(function TestLookupOnReceiver() {
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let log = [];
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function f(o, v) {
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o.x = v;
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return o.x;
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}
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let p = {};
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Object.defineProperty(
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p, "x",
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{
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get: function() { return 153; },
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set: function(v) { log.push("set"); },
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configurable: true
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});
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let o = Object.create(p);
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// Turn o to dictionary mode.
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for (let i = 0; i < 2048; i++) {
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o["p"+i] = 0;
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}
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assertFalse(%HasFastProperties(o));
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for (let i = 0; i < 5; i++) {
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log.push(f(o, i));
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}
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Object.defineProperty(o, "x", { value: 0, configurable: true, writable: true});
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for (let i = 0; i < 5; i++) {
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log.push(f(o, 42 + i));
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}
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assertEquals(log,
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["set", 153, "set", 153, "set", 153, "set", 153, "set", 153,
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42, 43, 44, 45, 46]);
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})();
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