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.
4
5// Flags: --harmony-promises --expose-debug-as debug
6
7// Test debug events when we listen to all exceptions and
8// there is a catch handler for the exception thrown in a Promise.
9// We expect an Exception debug event with a promise to be triggered.
10
11Debug = debug.Debug;
12
13var log = [];
14var step = 0;
15var exception = undefined;
16
17var p = new Promise(function(resolve, reject) {
18  log.push("resolve");
19  resolve();
20});
21
22var q = p.chain(
23  function() {
24    log.push("throw");
25    throw new Error("uncaught");  // event
26  });
27
28function listener(event, exec_state, event_data, data) {
29  try {
30    // Ignore exceptions during startup in stress runs.
31    if (step >= 1) return;
32    assertEquals(["resolve", "end main", "throw"], log);
33    if (event == Debug.DebugEvent.Exception) {
34      assertEquals(0, step);
35      assertEquals("uncaught", event_data.exception().message);
36      assertTrue(event_data.promise() instanceof Promise);
37      assertEquals(q, event_data.promise());
38      assertTrue(event_data.uncaught());
39      // Assert that the debug event is triggered at the throw site.
40      assertTrue(exec_state.frame(0).sourceLineText().indexOf("// event") > 0);
41      step++;
42    }
43  } catch (e) {
44    // Signal a failure with exit code 1.  This is necessary since the
45    // debugger swallows exceptions and we expect the chained function
46    // and this listener to be executed after the main script is finished.
47    print("Unexpected exception: " + e + "\n" + e.stack);
48    quit(1);
49  }
50}
51
52Debug.setBreakOnException();
53Debug.setListener(listener);
54
55log.push("end main");
56