/
itkImageIORegionGTest.cxx
217 lines (169 loc) · 5.69 KB
/
itkImageIORegionGTest.cxx
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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
/*=========================================================================
*
* Copyright NumFOCUS
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
// First include the header file to be tested:
#include "itkImageIORegion.h"
#include <gtest/gtest.h>
#include <random>
#include <type_traits> // For is_default_constructible, is_copy_constructible, etc.
#include <utility> // For move.
namespace
{
template <typename TTypeTrait>
constexpr bool
StaticAssertValueOfTypeTrait()
{
static_assert(TTypeTrait::value, "The value of this type trait should be true!");
return TTypeTrait::value;
}
template <typename T>
constexpr bool
IsDefaultConstructibleCopyableNoThrowMovableAndDestructible()
{
return StaticAssertValueOfTypeTrait<std::is_default_constructible<T>>() &&
StaticAssertValueOfTypeTrait<std::is_copy_constructible<T>>() &&
StaticAssertValueOfTypeTrait<std::is_copy_assignable<T>>() &&
StaticAssertValueOfTypeTrait<std::is_nothrow_move_constructible<T>>() &&
StaticAssertValueOfTypeTrait<std::is_nothrow_move_assignable<T>>();
}
static_assert(IsDefaultConstructibleCopyableNoThrowMovableAndDestructible<itk::ImageIORegion>(),
"itk::ImageIORegion should be default-constructible, copyable, noexcept movable, and destructible.");
template <typename T>
void
Expect_CopyAndMoveConstructible(const T & value)
{
const auto copiedValue = value;
EXPECT_EQ(copiedValue, value);
auto nonConstValue = value;
const auto movedValue = std::move(nonConstValue);
EXPECT_EQ(movedValue, value);
}
template <typename T>
void
Expect_CopyAssignable(const T & initialValue, const T & newValue)
{
T lhs(initialValue);
lhs = newValue;
EXPECT_EQ(lhs, newValue);
}
template <typename T>
void
Expect_CopyAssignableToSelf(const T & value)
{
T self(value);
// Slight contortion to avoid self-assignment warning with 'self = self'.
const T & referenceToSelf = self;
self = referenceToSelf;
EXPECT_EQ(self, value);
}
template <typename T>
void
Expect_CopyAssignableToSameValue(const T & value)
{
T self(value);
self = value;
EXPECT_EQ(self, value);
}
template <typename T>
void
Expect_MoveAssignableToSameValue(const T & value)
{
T self(value);
// Note that T(value) is an rvalue, that can be moved!
self = T(value);
EXPECT_EQ(self, value);
}
template <typename T>
void
Expect_MoveAssignable(const T & initialValue, const T & newValue)
{
T lhs(initialValue);
// Note that T(newValue) is an rvalue, that can be moved!
lhs = T(newValue);
EXPECT_EQ(lhs, newValue);
}
template <typename T>
void
Expect_Assignable(const T & value1, const T & value2)
{
Expect_MoveAssignable(value1, value2);
Expect_MoveAssignable(value2, value1);
Expect_MoveAssignableToSameValue(value1);
Expect_MoveAssignableToSameValue(value2);
Expect_CopyAssignable(value1, value2);
Expect_CopyAssignable(value2, value1);
Expect_CopyAssignableToSameValue(value1);
Expect_CopyAssignableToSameValue(value2);
Expect_CopyAssignableToSelf(value1);
Expect_CopyAssignableToSelf(value2);
}
void
SetRandomIndexAndSize(itk::ImageIORegion & region)
{
std::mt19937 randomNumberEngine;
std::uniform_int_distribution<itk::IndexValueType> indexDistribution(std::numeric_limits<itk::IndexValueType>::min());
std::uniform_int_distribution<itk::SizeValueType> sizeDistribution(std::numeric_limits<itk::SizeValueType>::min());
const unsigned int imageDimension{ region.GetImageDimension() };
for (unsigned int i{}; i < imageDimension; ++i)
{
region.SetIndex(i, indexDistribution(randomNumberEngine));
region.SetSize(i, sizeDistribution(randomNumberEngine));
}
}
itk::ImageIORegion
GenerateRandomRegion(const unsigned int imageDimension)
{
itk::ImageIORegion region(imageDimension);
SetRandomIndexAndSize(region);
return region;
}
} // namespace
TEST(ImageIORegion, IsTwoDimensionalByDefault)
{
const itk::ImageIORegion expectedTwoDimensionalRegion(2);
EXPECT_EQ(itk::ImageIORegion(), expectedTwoDimensionalRegion);
itk::ImageIORegion defaultInitializedRegion;
EXPECT_EQ(defaultInitializedRegion, expectedTwoDimensionalRegion);
}
TEST(ImageIORegion, IsCopyAndMoveConstructible)
{
Expect_CopyAndMoveConstructible(itk::ImageIORegion());
Expect_CopyAndMoveConstructible(itk::ImageIORegion(3));
itk::ImageIORegion region(3);
SetRandomIndexAndSize(region);
Expect_CopyAndMoveConstructible(region);
}
TEST(ImageIORegion, IsAssignable)
{
Expect_Assignable(GenerateRandomRegion(2), GenerateRandomRegion(2));
Expect_Assignable(GenerateRandomRegion(2), GenerateRandomRegion(3));
}
// Tests that a zero-sized region is not considered to be inside of another region.
TEST(ImageIORegion, ZeroSizedRegionIsNotInside)
{
for (const unsigned int dimension : { 0, 2, 3 })
{
itk::ImageIORegion region(dimension);
region.SetSize(itk::ImageIORegion::SizeType(dimension, 2));
for (const auto indexValue : { -1, 0, 1 })
{
itk::ImageIORegion zeroSizedRegion(dimension);
zeroSizedRegion.SetIndex(itk::ImageIORegion::IndexType(dimension, indexValue));
EXPECT_FALSE(region.IsInside(zeroSizedRegion));
};
}
}