1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
'use strict';
var Debug = debug.Debug
var done, stepCount;
var exception = null;
function listener(event, execState, eventData, data) {
if (event != Debug.DebugEvent.Break) return;
try {
if (!done) {
execState.prepareStep(Debug.StepAction.StepIn);
var s = execState.frame().sourceLineText();
assertTrue(s.indexOf('// ' + stepCount + '.') !== -1);
stepCount++;
}
} catch (e) {
exception = e;
}
};
Debug.setListener(listener);
class Base {
constructor() {
var x = 1; // 1.
var y = 2; // 2.
done = true; // 3.
}
}
class Derived extends Base {} // 0.
(function TestBreakPointInConstructor() {
done = false;
stepCount = 1;
var bp = Debug.setBreakPoint(Base, 0);
new Base();
assertEquals(4, stepCount);
Debug.clearBreakPoint(bp);
})();
(function TestDefaultConstructor() {
done = false;
stepCount = 1;
var bp = Debug.setBreakPoint(Base, 0);
new Derived();
assertEquals(4, stepCount);
Debug.clearBreakPoint(bp);
})();
(function TestStepInto() {
done = false;
stepCount = -1;
function f() {
new Derived(); // -1.
}
var bp = Debug.setBreakPoint(f, 0);
f();
assertEquals(4, stepCount);
Debug.clearBreakPoint(bp);
})();
(function TestExtraIndirection() {
done = false;
stepCount = -2;
class Derived2 extends Derived {} // -1.
function f() {
new Derived2(); // -2.
}
var bp = Debug.setBreakPoint(f, 0);
f();
assertEquals(4, stepCount);
Debug.clearBreakPoint(bp);
})();
(function TestBoundClass() {
done = false;
stepCount = -1;
var bound = Derived.bind(null);
function f() {
new bound(); // -1.
}
var bp = Debug.setBreakPoint(f, 0);
f();
assertEquals(4, stepCount);
Debug.clearBreakPoint(bp);
})();
Debug.setListener(null);
assertNull(exception);
|