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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 "itkOptimizerParameters.h"
#include <gtest/gtest.h>
#include <algorithm> // For count and equal.
#include <array>
#include <vector>
// Tests constructing OptimizerParameters of the specified size and initial value.
TEST(OptimizerParameters, ConstructWithSpecifiedSizeAndInitialValue)
{
using OptimizerParametersType = itk::OptimizerParameters<double>;
for (double initialValue{ -1.0 }; initialValue <= 1.0; ++initialValue)
{
EXPECT_EQ(OptimizerParametersType(0, initialValue).size(), 0);
for (size_t size{ 1 }; size <= 4; ++size)
{
const OptimizerParametersType optimizerParameters(size, initialValue);
EXPECT_EQ(optimizerParameters.size(), size);
EXPECT_EQ(std::count(optimizerParameters.begin(), optimizerParameters.end(), initialValue), size);
}
}
}
// Tests constructing OptimizerParameters with the specified data and size.
TEST(OptimizerParameters, ConstructWithSpecifiedDataAndSize)
{
using OptimizerParametersType = itk::OptimizerParameters<double>;
// First test for size = zero.
EXPECT_EQ(OptimizerParametersType(std::vector<double>{}.data(), 0), OptimizerParametersType{});
EXPECT_EQ(OptimizerParametersType(std::array<double, 0>().data(), 0), OptimizerParametersType{});
// Test for an arbitrary size:
const auto testConstructOptimizerParameters = [](const double * const inputData, const itk::SizeValueType dimension) {
const OptimizerParametersType optimizerParameters(inputData, dimension);
ASSERT_EQ(optimizerParameters.size(), dimension);
EXPECT_TRUE(std::equal(optimizerParameters.begin(), optimizerParameters.end(), inputData));
};
testConstructOptimizerParameters(std::array<double, 1>().data(), 1);
testConstructOptimizerParameters(std::vector<double>{ 1.0 }.data(), 1);
const std::vector<double> stdVector{ 1.0, 2.0, 4.0 };
testConstructOptimizerParameters(stdVector.data(), stdVector.size());
}
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