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: --expose-debug-as debug --allow-natives-syntax --promise-extra
6
7// Test debug events when we listen to all exceptions and
8// there is no 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 expected_events = 1;
14var log = [];
15
16var p = new Promise(function(resolve, reject) {
17  log.push("resolve");
18  resolve();
19});
20
21var q = p.chain(
22  function() {
23    log.push("throw");
24    throw new Error("uncaught");  // event
25  });
26
27function listener(event, exec_state, event_data, data) {
28  try {
29    // Ignore exceptions during startup in stress runs.
30    if (event == Debug.DebugEvent.Exception) {
31      expected_events--;
32      assertTrue(expected_events >= 0);
33      assertEquals("uncaught", event_data.exception().message);
34      assertTrue(event_data.promise() instanceof Promise);
35      assertSame(q, event_data.promise());
36      assertTrue(event_data.uncaught());
37      // Assert that the debug event is triggered at the throw site.
38      assertTrue(exec_state.frame(0).sourceLineText().indexOf("// event") > 0);
39    }
40  } catch (e) {
41    %AbortJS(e + "\n" + e.stack);
42  }
43}
44
45Debug.setBreakOnException();
46Debug.setListener(listener);
47
48log.push("end main");
49
50function testDone(iteration) {
51  function checkResult() {
52    try {
53      assertTrue(iteration < 10);
54      if (expected_events === 0) {
55        assertEquals(["resolve", "end main", "throw"], log);
56      } else {
57        testDone(iteration + 1);
58      }
59    } catch (e) {
60      %AbortJS(e + "\n" + e.stack);
61    }
62  }
63
64  %EnqueueMicrotask(checkResult);
65}
66
67testDone(0);
68