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 --allow-natives-syntax --harmony-async-await |
| 6 | |
| 7 | var Debug = debug.Debug; |
| 8 | var step_count = 0; |
| 9 | |
| 10 | function listener(event, execState, eventData, data) { |
| 11 | if (event != Debug.DebugEvent.Break) return; |
| 12 | try { |
| 13 | var line = execState.frame(0).sourceLineText(); |
| 14 | print(line); |
| 15 | var [match, expected_count, step] = /\/\/ B(\d) (\w+)$/.exec(line); |
| 16 | assertEquals(step_count++, parseInt(expected_count)); |
| 17 | if (step != "Continue") execState.prepareStep(Debug.StepAction[step]); |
| 18 | } catch (e) { |
| 19 | print(e, e.stack); |
| 20 | quit(1); |
| 21 | } |
| 22 | } |
| 23 | |
| 24 | Debug.setListener(listener); |
| 25 | |
| 26 | var late_resolve; |
| 27 | |
| 28 | function g() { |
| 29 | return new Promise( // B3 StepOut |
| 30 | function(res, rej) { |
| 31 | late_resolve = res; |
| 32 | } |
| 33 | ); |
| 34 | } |
| 35 | |
| 36 | async function f() { |
| 37 | var a = 1; |
| 38 | debugger; // B0 StepNext |
| 39 | a += // B1 StepNext |
| 40 | await // B4 StepNext |
| 41 | g(); // B2 StepIn |
| 42 | return a; // B6 StepNext |
| 43 | } // B7 Continue |
| 44 | |
| 45 | f(); |
| 46 | |
| 47 | // Continuing at an intermediate break point means that we will |
| 48 | // carry on with the current async step. |
| 49 | debugger; // B5 Continue |
| 50 | |
| 51 | late_resolve(3); |
| 52 | |
| 53 | %RunMicrotasks(); |
| 54 | |
| 55 | assertEquals(8, step_count); |