diff options
Diffstat (limited to 'deps/v8/test/mjsunit/harmony/debug-async-break-on-stack.js')
-rw-r--r-- | deps/v8/test/mjsunit/harmony/debug-async-break-on-stack.js | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/harmony/debug-async-break-on-stack.js b/deps/v8/test/mjsunit/harmony/debug-async-break-on-stack.js new file mode 100644 index 0000000000..d3d9d8bef6 --- /dev/null +++ b/deps/v8/test/mjsunit/harmony/debug-async-break-on-stack.js @@ -0,0 +1,78 @@ +// 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 +// Flags: --harmony-async-await --allow-natives-syntax + +var Debug = debug.Debug; + +function assertEqualsAsync(expected, run, msg) { + var actual; + var hadValue = false; + var hadError = false; + var promise = run(); + + if (typeof promise !== "object" || typeof promise.then !== "function") { + throw new MjsUnitAssertionError( + "Expected " + run.toString() + + " to return a Promise, but it returned " + promise); + } + + promise.then(function(value) { hadValue = true; actual = value; }, + function(error) { hadError = true; actual = error; }); + + assertFalse(hadValue || hadError); + + %RunMicrotasks(); + + if (hadError) throw actual; + + assertTrue( + hadValue, "Expected '" + run.toString() + "' to produce a value"); + + assertEquals(expected, actual, msg); +} + +var break_count = 0; +var exception = null; + +function listener(event, exec_state, event_data, data) { + if (event != Debug.DebugEvent.Break) return; + try { + break_count++; + var line = exec_state.frame(0).sourceLineText(); + print(line); + assertTrue(line.indexOf(`B${break_count}`) > 0); + } catch (e) { + exception = e; + } +} + + +async function g() { + setbreaks(); + throw 1; // B1 +} + +async function f() { + try { + await g(); + } catch (e) {} + return 2; // B2 +} + +function setbreaks() { + Debug.setListener(listener); + Debug.setBreakPoint(g, 2); + Debug.setBreakPoint(f, 4); +} + +f(); + +%RunMicrotasks(); + +assertEqualsAsync(2, async () => break_count); +assertEqualsAsync(null, async () => exception); + +Debug.setListener(null); |