Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1 | // Copyright 2016 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | // Flags: --harmony-async-await --expose-debug-as debug --allow-natives-syntax |
| 6 | |
| 7 | Debug = debug.Debug; |
| 8 | |
| 9 | var base_id = -1; |
| 10 | var exception = null; |
| 11 | var expected = [ |
| 12 | "enqueue #1", |
| 13 | "willHandle #1", |
| 14 | "then #1", |
| 15 | "enqueue #2", |
| 16 | "enqueue #3", |
| 17 | "didHandle #1", |
| 18 | "willHandle #2", |
| 19 | "then #2", |
| 20 | "didHandle #2", |
| 21 | "willHandle #3", |
| 22 | "enqueue #4", |
| 23 | "didHandle #3", |
| 24 | "willHandle #4", |
| 25 | "didHandle #4", |
| 26 | ]; |
| 27 | |
| 28 | function assertLog(msg) { |
| 29 | print(msg); |
| 30 | assertTrue(expected.length > 0); |
| 31 | assertEquals(expected.shift(), msg); |
| 32 | if (!expected.length) { |
| 33 | Debug.setListener(null); |
| 34 | } |
| 35 | } |
| 36 | |
| 37 | function listener(event, exec_state, event_data, data) { |
| 38 | if (event != Debug.DebugEvent.AsyncTaskEvent) return; |
| 39 | try { |
| 40 | if (base_id < 0) |
| 41 | base_id = event_data.id(); |
| 42 | var id = event_data.id() - base_id + 1; |
| 43 | assertTrue("Promise.resolve" == event_data.name() || |
| 44 | "PromiseResolveThenableJob" == event_data.name()); |
| 45 | assertLog(event_data.type() + " #" + id); |
| 46 | } catch (e) { |
| 47 | print(e + e.stack) |
| 48 | exception = e; |
| 49 | } |
| 50 | } |
| 51 | |
| 52 | Debug.setListener(listener); |
| 53 | |
| 54 | var resolver; |
| 55 | var p = new Promise(function(resolve, reject) { |
| 56 | resolver = resolve; |
| 57 | }); |
| 58 | |
| 59 | async function main() { |
| 60 | await p; |
| 61 | assertLog("then #1"); |
| 62 | await undefined; |
| 63 | assertLog("then #2"); |
| 64 | } |
| 65 | main(); |
| 66 | resolver(); |
| 67 | |
| 68 | %RunMicrotasks(); |
| 69 | |
| 70 | assertNull(exception); |