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
|
/*=========================================================================
*
* 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 "itkPoint.h"
#include "itkRangeGTestUtilities.h"
#include <gtest/gtest.h>
#include <initializer_list>
#include <iterator> // For begin and end.
#include <numeric> // For iota.
#include <type_traits> // For is_same.
namespace
{
template <unsigned int VDimension>
void
Expect_Point_can_be_constructed_by_std_array()
{
using ValueType = double;
using PointType = itk::Point<ValueType, VDimension>;
std::array<ValueType, VDimension> stdArray;
// Assign a different value (0, 1, 2, ...) to each element.
std::iota(std::begin(stdArray), std::end(stdArray), 0.0);
// Now construct the point (using the explicit Point constructor for std::array).
const PointType point(stdArray);
// Check that the values of all element are copied.
EXPECT_TRUE(std::equal(point.cbegin(), point.cend(), stdArray.cbegin()));
}
} // namespace
// Tests that a Point that is "value-initialized" (by empty braces, `{}`) is zero-filled.
TEST(Point, ValueInitializedIsZeroFilled)
{
itk::RangeGTestUtilities::ExpectEachElementIsZero(itk::Point<int>{});
itk::RangeGTestUtilities::ExpectEachElementIsZero(itk::Point<float, 2>{});
itk::RangeGTestUtilities::ExpectEachElementIsZero(itk::Point<double, 4>{});
}
// Tests that a Point can be constructed by specifying
// its coordinates by an std::array<ValueType, VDimension>.
TEST(Point, CanBeConstructedByStdArray)
{
// Test for 2-D and 3-D.
Expect_Point_can_be_constructed_by_std_array<2>();
Expect_Point_can_be_constructed_by_std_array<3>();
}
TEST(Point, Make)
{
static_assert(std::is_same_v<decltype(itk::MakePoint(0))::ValueType, int> &&
std::is_same_v<decltype(itk::MakePoint(0.0))::ValueType, double>,
"The value type of the created point should be the same as the type of the (first) argument");
static_assert((decltype(itk::MakePoint(1, 1))::Dimension == 2) && (decltype(itk::MakePoint(1, 1, 1))::Dimension == 3),
"The dimension of the created point should equal the number of arguments");
EXPECT_EQ(itk::MakePoint(0, 0), (itk::Point<int, 2>()));
EXPECT_EQ(itk::MakePoint(0, 0, 0), (itk::Point<int, 3>()));
const auto point = itk::MakePoint(1, 2, 3, 4);
const auto values = { 1, 2, 3, 4 };
EXPECT_TRUE(std::equal(point.begin(), point.end(), values.begin(), values.end()));
}
|
