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Issue 2566093002: [debug-wrapper] migrate some scope related tests (Closed)
Patch Set: address comments Created 4 years ago
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1 // Copyright 2010 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
4 // met:
5 //
6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided
11 // with the distribution.
12 // * Neither the name of Google Inc. nor the names of its
13 // contributors may be used to endorse or promote products derived
14 // from this software without specific prior written permission.
15 //
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28 // Flags: --expose-debug-as debug
29 // Get the Debug object exposed from the debug context global object.
30 Debug = debug.Debug
31
32 listener_complete = false;
33 exception = false;
34 break_count = 0;
35 expected_return_value = 0;
36 debugger_source_position = 0;
37
38 // Listener which expects to do four steps to reach returning from the function.
39 function listener(event, exec_state, event_data, data) {
40 try {
41 if (event == Debug.DebugEvent.Break)
42 {
43 break_count++;
44 if (break_count < 4) {
45 assertFalse(exec_state.frame(0).isAtReturn())
46 switch (break_count) {
47 case 1:
48 // Collect the position of the debugger statement.
49 debugger_source_position = exec_state.frame(0).sourcePosition();
50 break;
51 case 2:
52 // Position now at the if statement.
53 assertEquals(debugger_source_position + 10,
54 exec_state.frame(0).sourcePosition());
55 break;
56 case 3:
57 // Position now at either of the returns.
58 if (expected_return_value == 1) {
59 assertEquals(debugger_source_position + 19,
60 exec_state.frame(0).sourcePosition());
61 } else {
62 assertEquals(debugger_source_position + 38,
63 exec_state.frame(0).sourcePosition());
64 }
65 break;
66 default:
67 fail("Unexpected");
68 }
69 exec_state.prepareStep(Debug.StepAction.StepIn);
70 } else {
71 // Position at the end of the function.
72 assertEquals(debugger_source_position + 50,
73 exec_state.frame(0).sourcePosition());
74
75 // Just about to return from the function.
76 assertTrue(exec_state.frame(0).isAtReturn())
77 assertEquals(expected_return_value,
78 exec_state.frame(0).returnValue().value());
79
80 listener_complete = true;
81 }
82 }
83 } catch (e) {
84 exception = e
85 print(e + e.stack)
86 };
87 };
88
89 // Add the debug event listener.
90 Debug.setListener(listener);
91
92 // Four steps from the debugger statement in this function will position us at
93 // the function return.
94 // 0 1 2 3 4 5
95 // 0123456789012345678901234567890123456789012345678901
96
97 function f(x) {debugger; if (x) { return 1; } else { return 2; } };
98
99 // Call f expecting different return values.
100 break_count = 0;
101 expected_return_value = 2;
102 listener_complete = false;
103 f();
104 assertFalse(exception, "exception in listener")
105 assertTrue(listener_complete);
106 assertEquals(4, break_count);
107
108 break_count = 0;
109 expected_return_value = 1;
110 listener_complete = false;
111 f(true);
112 assertFalse(exception, "exception in listener")
113 assertTrue(listener_complete);
114 assertEquals(4, break_count);
115
116 break_count = 0;
117 expected_return_value = 2;
118 listener_complete = false;
119 f(false);
120 assertFalse(exception, "exception in listener")
121 assertTrue(listener_complete);
122 assertEquals(4, break_count);
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