2e4efcfac2
To avoid tanking context startup performance, only the actual installation of the JS-exposed API is flag-guarded. The remainder of the implementation still resides in the snapshot. Review URL: https://codereview.chromium.org/1257063003 Cr-Commit-Position: refs/heads/master@{#30017}
53 lines
1.1 KiB
JavaScript
53 lines
1.1 KiB
JavaScript
// Copyright 2014 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: --harmony-object-observe
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// Flags: --expose-debug-as debug
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Debug = debug.Debug;
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var base_id = -1;
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var exception = null;
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var expected = [
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"enqueue #1",
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"willHandle #1",
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"didHandle #1",
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];
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function assertLog(msg) {
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print(msg);
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assertTrue(expected.length > 0);
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assertEquals(expected.shift(), msg);
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if (!expected.length) {
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Debug.setListener(null);
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}
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}
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function listener(event, exec_state, event_data, data) {
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if (event != Debug.DebugEvent.AsyncTaskEvent) return;
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try {
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if (base_id < 0)
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base_id = event_data.id();
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var id = event_data.id() - base_id + 1;
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assertEquals("Object.observe", event_data.name());
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assertLog(event_data.type() + " #" + id);
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} catch (e) {
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print(e + e.stack)
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exception = e;
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}
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}
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Debug.setListener(listener);
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var obj = {};
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Object.observe(obj, function(changes) {
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print(change.type + " " + change.name + " " + change.oldValue);
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});
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obj.foo = 1;
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obj.zoo = 2;
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obj.foo = 3;
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assertNull(exception);
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