56 lines
1.3 KiB
JavaScript
56 lines
1.3 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: --expose-debug-as debug --allow-natives-syntax --harmony-async-await
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var Debug = debug.Debug;
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var step_count = 0;
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function listener(event, execState, eventData, data) {
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if (event != Debug.DebugEvent.Break) return;
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try {
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var line = execState.frame(0).sourceLineText();
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print(line);
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var [match, expected_count, step] = /\/\/ B(\d) (\w+)$/.exec(line);
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assertEquals(step_count++, parseInt(expected_count));
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if (step != "Continue") execState.prepareStep(Debug.StepAction[step]);
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} catch (e) {
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print(e, e.stack);
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quit(1);
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}
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}
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Debug.setListener(listener);
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var late_resolve;
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function g() {
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return new Promise( // B3 StepOut
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function(res, rej) {
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late_resolve = res;
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}
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);
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}
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async function f() {
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var a = 1;
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debugger; // B0 StepNext
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a += // B1 StepNext
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await // B4 StepNext
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g(); // B2 StepIn
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return a;
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}
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f();
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// Starting a new step action at an intermediate break point
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// means that we will abort the current async step.
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debugger; // B5 StepNext
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late_resolve(3); // B6 Continue
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%RunMicrotasks();
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assertEquals(7, step_count);
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