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/*=========================================================================
*
* 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 "itkTransform.h"
#include <gtest/gtest.h>
namespace
{
template <typename TParametersValueType, unsigned int VInputDimension, unsigned int VOutputDimension>
class DerivedTransform : public itk::Transform<TParametersValueType, VInputDimension, VOutputDimension>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(DerivedTransform);
using Self = DerivedTransform;
using Superclass = itk::Transform<TParametersValueType, VInputDimension, VOutputDimension>;
using Pointer = itk::SmartPointer<Self>;
itkNewMacro(Self);
private:
DerivedTransform() = default;
using typename Superclass::FixedParametersType;
using typename Superclass::InputPointType;
using typename Superclass::JacobianType;
using typename Superclass::OutputPointType;
using typename Superclass::ParametersType;
static constexpr const char * exceptionMessage =
"This member function is not meant to be called during unit testing!";
void
SetParameters(const ParametersType &) override
{
itkExceptionMacro(<< exceptionMessage);
}
void
SetFixedParameters(const FixedParametersType &) override
{
itkExceptionMacro(<< exceptionMessage);
}
OutputPointType
TransformPoint(const InputPointType &) const override
{
itkExceptionMacro(<< exceptionMessage);
}
void
ComputeJacobianWithRespectToParameters(const InputPointType &, JacobianType &) const override
{
itkExceptionMacro(<< exceptionMessage);
}
};
} // namespace
// Tests that a transform derived from itk::Transform has empty Parameters and FixedParameters by default.
TEST(Transform, HasEmptyParametersAndFixedParametersByDefault)
{
const auto expectEmpty = [](const auto & transform) {
EXPECT_TRUE(transform.GetParameters().empty());
EXPECT_TRUE(transform.GetFixedParameters().empty());
};
expectEmpty(*(DerivedTransform<float, 2, 2>::New()));
expectEmpty(*(DerivedTransform<double, 3, 4>::New()));
}
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