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: --expose-debug-as debug |
| 6 | // Flags: --harmony-async-await --allow-natives-syntax |
| 7 | |
| 8 | var Debug = debug.Debug; |
| 9 | |
| 10 | function assertEqualsAsync(expected, run, msg) { |
| 11 | var actual; |
| 12 | var hadValue = false; |
| 13 | var hadError = false; |
| 14 | var promise = run(); |
| 15 | |
| 16 | if (typeof promise !== "object" || typeof promise.then !== "function") { |
| 17 | throw new MjsUnitAssertionError( |
| 18 | "Expected " + run.toString() + |
| 19 | " to return a Promise, but it returned " + promise); |
| 20 | } |
| 21 | |
| 22 | promise.then(function(value) { hadValue = true; actual = value; }, |
| 23 | function(error) { hadError = true; actual = error; }); |
| 24 | |
| 25 | assertFalse(hadValue || hadError); |
| 26 | |
| 27 | %RunMicrotasks(); |
| 28 | |
| 29 | if (hadError) throw actual; |
| 30 | |
| 31 | assertTrue( |
| 32 | hadValue, "Expected '" + run.toString() + "' to produce a value"); |
| 33 | |
| 34 | assertEquals(expected, actual, msg); |
| 35 | } |
| 36 | |
| 37 | var break_count = 0; |
| 38 | var exception = null; |
| 39 | |
| 40 | function listener(event, exec_state, event_data, data) { |
| 41 | if (event != Debug.DebugEvent.Break) return; |
| 42 | try { |
| 43 | break_count++; |
| 44 | var line = exec_state.frame(0).sourceLineText(); |
| 45 | assertTrue(line.indexOf(`B${break_count}`) > 0); |
| 46 | } catch (e) { |
| 47 | exception = e; |
| 48 | } |
| 49 | } |
| 50 | |
| 51 | Debug.setListener(listener); |
| 52 | |
| 53 | async function g() { |
| 54 | throw 1; |
| 55 | } |
| 56 | |
| 57 | async function f() { |
| 58 | try { |
| 59 | await g(); // B1 |
| 60 | } catch (e) {} |
| 61 | assertEquals(2, break_count); // B2 |
| 62 | return 1; // B3 |
| 63 | } |
| 64 | |
| 65 | Debug.setBreakPoint(f, 2); |
| 66 | Debug.setBreakPoint(f, 4); |
| 67 | Debug.setBreakPoint(f, 5); |
| 68 | |
| 69 | f(); |
| 70 | |
| 71 | %RunMicrotasks(); |
| 72 | |
| 73 | assertEqualsAsync(3, async () => break_count); |
| 74 | assertEqualsAsync(null, async () => exception); |
| 75 | |
| 76 | Debug.setListener(null); |