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/*=========================================================================
*
* Copyright UMC Utrecht and contributors
*
* 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
*
* http://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 "elxDefaultConstruct.h"
#include <itkImage.h>
#include <gtest/gtest.h>
#include <type_traits> // For is_base_of and is_default_constructible.
// The class template to be tested:
using elastix::DefaultConstruct;
// Example type, to be used as template argument of DefaultConstruct.
using ImageType = itk::Image<int>;
namespace
{
// A minimal test class, to be used as template argument of DefaultConstruct.
class TestObject : public itk::LightObject
{
public:
ITK_DISALLOW_COPY_AND_MOVE(TestObject);
using Self = TestObject;
using Superclass = itk::LightObject;
using Pointer = itk::SmartPointer<Self>;
itkNewMacro(Self);
protected:
TestObject() = default;
~TestObject() = default;
private:
int m_data{};
friend bool
operator==(const Self & lhs, const Self & rhs)
{
return lhs.m_data == rhs.m_data;
}
friend bool
operator!=(const Self & lhs, const Self & rhs)
{
return !(lhs == rhs);
}
};
} // namespace
static_assert(std::is_base_of<TestObject, DefaultConstruct<TestObject>>{} &&
std::is_base_of<ImageType, DefaultConstruct<ImageType>>{},
"DefaultConstruct<T> must be a subclass of T! ");
static_assert(std::is_default_constructible<DefaultConstruct<TestObject>>{} &&
std::is_default_constructible<DefaultConstruct<ImageType>>{},
"DefaultConstruct<T> must be default-constructible! ");
GTEST_TEST(DefaultConstruct, Check)
{
const DefaultConstruct<ImageType> defaultConstructedImage{};
const DefaultConstruct<TestObject> defaultConstructedTestObject{};
EXPECT_EQ(defaultConstructedTestObject, *TestObject::New());
EXPECT_EQ(defaultConstructedImage, *ImageType::New());
}
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