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Unified Diff: test/mjsunit/harmony/async-debug-step-abort-at-break.js

Issue 2033223003: [debug] implement intuitive semantics for stepping over await call. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: fix arm64 Created 4 years, 6 months ago
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Index: test/mjsunit/harmony/async-debug-step-abort-at-break.js
diff --git a/test/mjsunit/harmony/async-debug-step-abort-at-break.js b/test/mjsunit/harmony/async-debug-step-abort-at-break.js
new file mode 100644
index 0000000000000000000000000000000000000000..be1f8056a843c4accc381cdca9e70729da342caf
--- /dev/null
+++ b/test/mjsunit/harmony/async-debug-step-abort-at-break.js
@@ -0,0 +1,55 @@
+// 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 StepOut
+ function(res, rej) {
+ late_resolve = res;
+ }
+ );
+}
+
+async function f() {
+ var a = 1;
+ debugger; // B0 StepNext
+ a += // B1 StepNext
+ await // B4 StepNext
+ g(); // B2 StepIn
+ return a;
+}
+
+f();
+
+// Starting a new step action at an intermediate break point
+// means that we will abort the current async step.
+debugger; // B5 StepNext
+
+late_resolve(3); // B6 Continue
+
+%RunMicrotasks();
+
+assertEquals(7, step_count);
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