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
118
119
120
121
122
123
124
125
126
127
128
129
130
|
// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/callback.h"
#include "base/callback_internal.h"
#include "base/scoped_ptr.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace {
class HelperObject {
public:
HelperObject() : next_number_(0) { }
int GetNextNumber() { return ++next_number_; }
void GetNextNumberArg(int* number) { *number = GetNextNumber(); }
private:
int next_number_;
};
struct FakeInvoker {
static void DoInvoke(internal::InvokerStorageBase*) {
}
};
// White-box testpoints to inject into a Callback<> object for checking
// comparators and emptiness APIs.
class FakeInvokerStorage1 : public internal::InvokerStorageBase {
public:
typedef FakeInvoker Invoker;
};
class FakeInvokerStorage2 : public internal::InvokerStorageBase {
public:
typedef FakeInvoker Invoker;
};
TEST(CallbackOld, OneArg) {
HelperObject obj;
scoped_ptr<Callback1<int*>::Type> callback(
NewCallback(&obj, &HelperObject::GetNextNumberArg));
int number = 0;
callback->Run(&number);
EXPECT_EQ(number, 1);
}
TEST(CallbackOld, ReturnValue) {
HelperObject obj;
scoped_ptr<CallbackWithReturnValue<int>::Type> callback(
NewCallbackWithReturnValue(&obj, &HelperObject::GetNextNumber));
EXPECT_EQ(callback->Run(), 1);
}
class CallbackTest : public ::testing::Test {
public:
CallbackTest()
: callback_a_(MakeInvokerStorageHolder(new FakeInvokerStorage1())),
callback_b_(MakeInvokerStorageHolder(new FakeInvokerStorage2())) {
}
virtual ~CallbackTest() {
}
protected:
Callback<void(void)> callback_a_;
const Callback<void(void)> callback_b_; // Ensure APIs work with const.
Callback<void(void)> null_callback_;
};
// Ensure we can create unbound callbacks. We need this to be able to store
// them in class members that can be initialized later.
TEST_F(CallbackTest, DefaultConstruction) {
Callback<void(void)> c0;
Callback<void(int)> c1;
Callback<void(int,int)> c2;
Callback<void(int,int,int)> c3;
Callback<void(int,int,int,int)> c4;
Callback<void(int,int,int,int,int)> c5;
Callback<void(int,int,int,int,int,int)> c6;
EXPECT_TRUE(c0.is_null());
EXPECT_TRUE(c1.is_null());
EXPECT_TRUE(c2.is_null());
EXPECT_TRUE(c3.is_null());
EXPECT_TRUE(c4.is_null());
EXPECT_TRUE(c5.is_null());
EXPECT_TRUE(c6.is_null());
}
TEST_F(CallbackTest, IsNull) {
EXPECT_TRUE(null_callback_.is_null());
EXPECT_FALSE(callback_a_.is_null());
EXPECT_FALSE(callback_b_.is_null());
}
TEST_F(CallbackTest, Equals) {
EXPECT_TRUE(callback_a_.Equals(callback_a_));
EXPECT_FALSE(callback_a_.Equals(callback_b_));
EXPECT_FALSE(callback_b_.Equals(callback_a_));
// We should compare based on instance, not type.
Callback<void(void)> callback_c(
MakeInvokerStorageHolder(new FakeInvokerStorage1()));
Callback<void(void)> callback_a2 = callback_a_;
EXPECT_TRUE(callback_a_.Equals(callback_a2));
EXPECT_FALSE(callback_a_.Equals(callback_c));
// Empty, however, is always equal to empty.
Callback<void(void)> empty2;
EXPECT_TRUE(null_callback_.Equals(empty2));
}
TEST_F(CallbackTest, Reset) {
// Resetting should bring us back to empty.
ASSERT_FALSE(callback_a_.is_null());
ASSERT_FALSE(callback_a_.Equals(null_callback_));
callback_a_.Reset();
EXPECT_TRUE(callback_a_.is_null());
EXPECT_TRUE(callback_a_.Equals(null_callback_));
}
} // namespace
} // namespace base
|
