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: --allow-natives-syntax --expose-debug-as debug
6
7Debug = debug.Debug;
8
9var eventsExpected = 16;
10var exception = null;
11var result = [];
12
13function updatePromise(promise, parentPromise, status, value) {
14  var i;
15  for (i = 0; i < result.length; ++i) {
16    if (result[i].promise === promise) {
17      result[i].parentPromise = parentPromise || result[i].parentPromise;
18      result[i].status = status || result[i].status;
19      result[i].value = value || result[i].value;
20      break;
21    }
22  }
23  assertTrue(i < result.length);
24}
25
26function listener(event, exec_state, event_data, data) {
27  if (event != Debug.DebugEvent.PromiseEvent) return;
28  try {
29    eventsExpected--;
30    assertTrue(event_data.promise().isPromise());
31    if (event_data.status() === 0) {
32      // New promise.
33      assertEquals("pending", event_data.promise().status());
34      result.push({ promise: event_data.promise().value(), status: 0 });
35      assertTrue(exec_state.frame(0).sourceLineText().indexOf("// event") > 0);
36    } else if (event_data.status() !== undefined) {
37      // Resolve/reject promise.
38      updatePromise(event_data.promise().value(),
39                    undefined,
40                    event_data.status(),
41                    event_data.value().value());
42    } else {
43      // Chain promises.
44      assertTrue(event_data.parentPromise().isPromise());
45      updatePromise(event_data.promise().value(),
46                    event_data.parentPromise().value());
47      assertTrue(exec_state.frame(0).sourceLineText().indexOf("// event") > 0);
48    }
49  } catch (e) {
50    print(e + e.stack)
51    exception = e;
52  }
53}
54
55Debug.setListener(listener);
56
57function resolver(resolve, reject) { resolve(); }
58
59var p1 = new Promise(resolver);  // event
60var p2 = p1.then().then();  // event
61var p3 = new Promise(function(resolve, reject) {  // event
62  reject("rejected");
63});
64var p4 = p3.then();  // event
65var p5 = p1.then();  // event
66
67function assertAsync(b, s) {
68  if (b) {
69    print(s, "succeeded");
70  } else {
71    %AbortJS(s + " FAILED!");
72  }
73}
74
75function testDone(iteration) {
76  function checkResult() {
77    if (eventsExpected === 0) {
78      assertAsync(result.length === 6, "result.length");
79
80      assertAsync(result[0].promise === p1, "result[0].promise");
81      assertAsync(result[0].parentPromise === undefined,
82                  "result[0].parentPromise");
83      assertAsync(result[0].status === 1, "result[0].status");
84      assertAsync(result[0].value === undefined, "result[0].value");
85
86      assertAsync(result[1].parentPromise === p1,
87                  "result[1].parentPromise");
88      assertAsync(result[1].status === 1, "result[1].status");
89
90      assertAsync(result[2].promise === p2, "result[2].promise");
91
92      assertAsync(result[3].promise === p3, "result[3].promise");
93      assertAsync(result[3].parentPromise === undefined,
94                  "result[3].parentPromise");
95      assertAsync(result[3].status === -1, "result[3].status");
96      assertAsync(result[3].value === "rejected", "result[3].value");
97
98      assertAsync(result[4].promise === p4, "result[4].promise");
99      assertAsync(result[4].parentPromise === p3,
100                  "result[4].parentPromise");
101      assertAsync(result[4].status === -1, "result[4].status");
102      assertAsync(result[4].value === "rejected", "result[4].value");
103
104      assertAsync(result[5].promise === p5, "result[5].promise");
105      assertAsync(result[5].parentPromise === p1,
106                  "result[5].parentPromise");
107      assertAsync(result[5].status === 1, "result[5].status");
108
109      assertAsync(exception === null, "exception === null");
110      Debug.setListener(null);
111    } else if (iteration > 10) {
112      %AbortJS("Not all events were received!");
113    } else {
114      testDone(iteration + 1);
115    }
116  }
117
118  var iteration = iteration || 0;
119  var dummy = {};
120  Object.observe(dummy, checkResult);
121  dummy.dummy = dummy;
122}
123
124testDone();
125