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
|
// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif
#include "remoting/base/typed_buffer.h"
#include <utility>
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace remoting {
namespace {
struct Data {
// A variable size vector.
int data[1];
};
} // namespace
// Check that the default constructor does not allocate the buffer.
TEST(TypedBufferTest, Empty) {
TypedBuffer<Data> buffer;
EXPECT_FALSE(buffer.get());
EXPECT_FALSE(buffer);
EXPECT_EQ(buffer.length(), 0u);
}
// Check that allocating zero-size structure does not allocate the buffer.
TEST(TypedBufferTest, ZeroSize) {
TypedBuffer<Data> buffer(0);
EXPECT_FALSE(buffer.get());
EXPECT_FALSE(buffer);
EXPECT_EQ(buffer.length(), 0u);
}
// Test creation of a buffer and verify that the buffer accessors work.
TEST(TypedBufferTest, Basic) {
TypedBuffer<Data> buffer(sizeof(int) * 10);
EXPECT_TRUE(buffer.get());
EXPECT_TRUE(buffer);
EXPECT_EQ(buffer.length(), sizeof(int) * 10);
// Make sure that operator*() syntax works.
(*buffer).data[9] = 0x12345678;
// Make sure that operator->() syntax works.
EXPECT_EQ(buffer->data[9], 0x12345678);
}
// Test creating a const (reference to) buffer. (This is something of a
// compilation test.)
TEST(TypedBufferTest, ConstTypedBuffer) {
TypedBuffer<Data> buffer(sizeof(int) * 10);
ASSERT_THAT(buffer.get(), testing::NotNull());
(*buffer).data[0] = 0x12345678;
const auto& buffer_reference = buffer;
ASSERT_EQ(buffer_reference.get()->data[0], 0x12345678);
}
// Test passing ownership.
TEST(TypedBufferTest, Pass) {
TypedBuffer<Data> left;
TypedBuffer<Data> right(sizeof(int));
EXPECT_FALSE(left.get());
EXPECT_EQ(left.length(), 0u);
EXPECT_TRUE(right.get());
EXPECT_EQ(right.length(), sizeof(int));
Data* ptr = right.get();
left = std::move(right);
// Verify that passing ownership transfers both the buffer pointer and its
// length.
EXPECT_EQ(left.get(), ptr);
EXPECT_EQ(left.length(), sizeof(int));
// Verify that the original object was cleared.
EXPECT_FALSE(right.get());
EXPECT_EQ(right.length(), 0u);
}
// Test swapping ownership.
TEST(TypedBufferTest, Swap) {
TypedBuffer<Data> left(sizeof(int));
TypedBuffer<Data> right(sizeof(int) * 2);
EXPECT_TRUE(left.get());
EXPECT_EQ(left.length(), sizeof(int));
EXPECT_TRUE(right.get());
EXPECT_EQ(right.length(), sizeof(int) * 2);
Data* raw_left = left.get();
Data* raw_right = right.get();
left.Swap(right);
// Verify that swapping simply exchange contents of two objects.
// length.
EXPECT_EQ(left.get(), raw_right);
EXPECT_EQ(left.length(), sizeof(int) * 2);
EXPECT_EQ(right.get(), raw_left);
EXPECT_EQ(right.length(), sizeof(int));
}
} // namespace remoting
|
