71 lines
1.4 KiB
JavaScript
71 lines
1.4 KiB
JavaScript
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// 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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// Flags: --harmony-async-await --expose-debug-as debug --allow-natives-syntax
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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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"then #1",
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"enqueue #2",
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"enqueue #3",
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"didHandle #1",
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"willHandle #2",
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"then #2",
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"didHandle #2",
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"willHandle #3",
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"enqueue #4",
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"didHandle #3",
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"willHandle #4",
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"didHandle #4",
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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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assertTrue("Promise.resolve" == event_data.name() ||
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"PromiseResolveThenableJob" == 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 resolver;
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var p = new Promise(function(resolve, reject) {
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resolver = resolve;
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});
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async function main() {
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await p;
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assertLog("then #1");
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await undefined;
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assertLog("then #2");
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}
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main();
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resolver();
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%RunMicrotasks();
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assertNull(exception);
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