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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 | |
7 Debug = debug.Debug | |
8 var exception = null; | |
9 var break_count = 0; | |
10 var expected_breaks = 7; | |
11 | |
12 function listener(event, exec_state, event_data, data) { | |
13 try { | |
14 if (event == Debug.DebugEvent.Break) { | |
15 assertTrue(exec_state.frameCount() != 0, "FAIL: Empty stack trace"); | |
16 var source = exec_state.frame(0).sourceLineText(); | |
17 print("paused at: " + source); | |
18 assertTrue(source.indexOf("// Break " + break_count + ".") > 0, | |
19 "Unexpected pause at: " + source); | |
20 if (source.indexOf("StepOver.") !== -1) { | |
21 exec_state.prepareStep(Debug.StepAction.StepNext, 1); | |
22 } else { | |
23 exec_state.prepareStep(Debug.StepAction.StepIn, 1); | |
24 } | |
25 ++break_count; | |
26 } else if (event == Debug.DebugEvent.AsyncTaskEvent && | |
27 event_data.type() === "willHandle" && | |
28 event_data.name() !== "Object.observe" && | |
29 break_count > 0) { | |
30 exec_state.prepareStep(Debug.StepAction.StepIn, 1); | |
31 } | |
32 } catch (e) { | |
33 exception = e; | |
34 print(e, e.stack); | |
35 } | |
36 }; | |
37 | |
38 Debug.setListener(listener); | |
39 | |
40 Promise.resolve(42) | |
41 .then(promise1) | |
42 .then(Object) // Should skip stepping into native. | |
43 .then(Boolean) // Should skip stepping into native. | |
44 .then(promise2) | |
45 .then(undefined, promise3) | |
46 .catch(function(e) { | |
47 %AbortJS("FAIL: uncaught exception " + e); | |
48 }); | |
49 | |
50 function promise1() | |
51 { | |
52 debugger; // Break 0. | |
53 return exception || 1; // Break 1. | |
54 } // Break 2. | |
55 | |
56 function promise2() | |
57 { | |
58 throw new Error; // Break 3. | |
59 } | |
60 | |
61 function promise3() | |
62 { | |
63 finalize(); // Break 4. StepOver. | |
64 return break_count; // Break 5. | |
65 } // Break 6. | |
66 | |
67 function finalize() | |
68 { | |
69 var dummy = {}; | |
70 Object.observe(dummy, function() { | |
71 if (expected_breaks !== break_count) { | |
72 %AbortJS("FAIL: expected <" + expected_breaks + "> breaks instead of <" + | |
73 break_count + ">"); | |
74 } | |
75 if (exception !== null) { | |
76 %AbortJS("FAIL: exception: " + exception); | |
77 } | |
78 }); | |
79 dummy.foo = 1; | |
80 } | |
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