nodejs/deps/v8/test/debugger/debug/es8/async-debug-builtin-predictions.js
Michaël Zasso a1d639ba5d
deps: update V8 to 8.6.395
PR-URL: https://github.com/nodejs/node/pull/35415
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Myles Borins <myles.borins@gmail.com>
2020-10-18 20:16:47 +02:00

67 lines
1.1 KiB
JavaScript

// Copyright 2017 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: --ignore-unhandled-promises
Debug = debug.Debug
var exception = null;
function listener(event, exec_state, event_data, data) {
if (event != Debug.DebugEvent.Exception) return;
try {
var line = exec_state.frame(0).sourceLineText();
var match = /Exception/.exec(line);
assertNotNull(match);
} catch (e) {
exception = e;
}
}
// Caught throw, events on any exception.
Debug.setListener(listener);
Debug.setBreakOnException();
var thenable = {
get then() {
throw new Error(); // Exception
}
};
class MyPromise extends Promise {
get then() {
throw new Error();
}
}
MyPromise.resolve(thenable);
var p = Promise.resolve(thenable);
async function foo() {
return thenable;
}
foo();
async function foo() {
await thenable;
}
foo();
async function foo() {
try {
await thenable;
} catch (e) {}
}
foo();
%PerformMicrotaskCheckpoint();
Debug.setListener(null);
Debug.clearBreakOnException();
assertNull(exception);