v8/test/mjsunit/harmony/async-debug-step-in.js

52 lines
1.3 KiB
JavaScript
Raw Normal View History

// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --expose-debug-as debug --allow-natives-syntax --harmony-async-await
var Debug = debug.Debug;
var step_count = 0;
function listener(event, execState, eventData, data) {
if (event != Debug.DebugEvent.Break) return;
try {
var line = execState.frame(0).sourceLineText();
print(line);
var [match, expected_count, step] = /\/\/ B(\d) (\w+)$/.exec(line);
assertEquals(step_count++, parseInt(expected_count));
if (step != "Continue") execState.prepareStep(Debug.StepAction[step]);
} catch (e) {
print(e, e.stack);
quit(1);
}
}
Debug.setListener(listener);
var late_resolve;
function g() {
return new Promise( // B3 StepIn
function(res, rej) {
late_resolve = res; // B4 StepIn
} // B5 StepIn
);
} // B6 StepIn
async function f() {
var a = 1;
debugger; // B0 StepNext
a += // B1 StepIn
await // B7 StepIn
g(); // B2 StepIn
return a; // B8 StepIn
} // B9 Continue
f().then(value => assertEquals(4, value));
late_resolve(3);
%RunMicrotasks();
assertEquals(10, step_count);