1 // Copyright 2014 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 // Flags: --harmony-promises --expose-debug-as debug
7 // Test debug events when we only listen to uncaught exceptions and
8 // an exception is thrown in the the Promise constructor.
9 // We expect an Exception debug event with a promise to be triggered.
16 function listener(event, exec_state, event_data, data) {
18 // Ignore exceptions during startup in stress runs.
19 if (step >= 1) return;
20 if (event == Debug.DebugEvent.Exception) {
21 assertEquals(0, step);
22 assertEquals("uncaught", event_data.exception().message);
23 assertTrue(event_data.promise() instanceof Promise);
24 assertTrue(event_data.uncaught());
25 // Assert that the debug event is triggered at the throw site.
26 assertTrue(exec_state.frame(0).sourceLineText().indexOf("// event") > 0);
30 // Signal a failure with exit code 1. This is necessary since the
31 // debugger swallows exceptions and we expect the chained function
32 // and this listener to be executed after the main script is finished.
33 print("Unexpected exception: " + e + "\n" + e.stack);
38 Debug.setBreakOnUncaughtException();
39 Debug.setListener(listener);
41 var p = new Promise(function(resolve, reject) {
42 throw new Error("uncaught"); // event
45 assertEquals(1, step);
46 assertNull(exception);