v8/test/mjsunit/es6/debug-promises-caught-uncaught.js

41 lines
1.1 KiB
JavaScript

// Copyright 2014 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
// Test debug events when we only listen to uncaught exceptions and
// there is a catch handler for the exception thrown in a Promise.
// We expect no debug event to be triggered.
Debug = debug.Debug;
var p = new Promise(function(resolve, reject) {
resolve();
});
var q = p.chain(
function() {
throw new Error("caught");
});
q.catch(
function(e) {
assertEquals("caught", e.message);
});
function listener(event, exec_state, event_data, data) {
try {
assertTrue(event != Debug.DebugEvent.Exception);
} catch (e) {
// Signal a failure with exit code 1. This is necessary since the
// debugger swallows exceptions and we expect the chained function
// and this listener to be executed after the main script is finished.
print("Unexpected exception: " + e + "\n" + e.stack);
quit(1);
}
}
Debug.setBreakOnUncaughtException();
Debug.setListener(listener);