text: /*=========================================================================
   *
   *  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
   *
   *         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.
   *
   *=========================================================================*/
  
  #include <fstream>
  #include "itkMaskedRankImageFilter.h"
  #include "itkImageFileReader.h"
  #include "itkImageFileWriter.h"
  #include "itkTextOutput.h"
  #include "itkSimpleFilterWatcher.h"
  #include "itkTestingMacros.h"
  
  int
  itkMaskedRankImageFilterTest(int argc, char * argv[])
  {
    // Comment the following if you want to use the itk text output window
    itk::OutputWindow::SetInstance(itk::TextOutput::New());
  
    if (argc < 5)
    {
      std::cerr << "Usage: " << itkNameOfTestExecutableMacro(argv) << " InputImage maskImage BaselineImage radius"
                << std::endl;
      return EXIT_FAILURE;
    }
  
    using ImageType = itk::Image<unsigned char, 2>;
  
    using ReaderType = itk::ImageFileReader<ImageType>;
    auto input = ReaderType::New();
    input->SetFileName(argv[1]);
  
    auto input2 = ReaderType::New();
    input2->SetFileName(argv[2]);
  
    // Create a filter
    using FilterType = itk::MaskedRankImageFilter<ImageType, ImageType, ImageType>;
    auto                     filter = FilterType::New();
    itk::SimpleFilterWatcher filterWatch(filter);
  
    using RadiusType = FilterType::RadiusType;
  
    // test default values
    RadiusType r1;
    r1.Fill(1);
    if (filter->GetRadius() != r1)
    {
      std::cerr << "Wrong default Radius." << std::endl;
      return EXIT_FAILURE;
    }
    if (filter->GetRank() != 0.5)
    {
      std::cerr << "Wrong default Rank." << std::endl;
      return EXIT_FAILURE;
    }
    if (filter->GetMaskValue() != 255)
    {
      std::cerr << "Wrong default mask value." << std::endl;
      return EXIT_FAILURE;
    }
    if (filter->GetFillValue() != 0)
    {
      std::cerr << "Wrong default fill value." << std::endl;
      return EXIT_FAILURE;
    }
    if (filter->GetBackgroundMaskValue() != 0)
    {
      std::cerr << "Wrong default background mask value." << std::endl;
      return EXIT_FAILURE;
    }
  
    // set radius with a radius type
    RadiusType r5;
    r5.Fill(5);
    filter->SetRadius(r5);
    if (filter->GetRadius() != r5)
    {
      std::cerr << "Radius value is not the expected one: r5." << std::endl;
      return EXIT_FAILURE;
    }
  
    // set radius with an integer
    filter->SetRadius(1);
    if (filter->GetRadius() != r1)
    {
      std::cerr << "Radius value is not the expected one: r1." << std::endl;
      return EXIT_FAILURE;
    }
  
    filter->SetRank(0.25);
    if (filter->GetRank() != 0.25)
    {
      std::cerr << "Rank value is not the expected one: " << filter->GetRank() << std::endl;
      return EXIT_FAILURE;
    }
  
    filter->SetMaskValue(1);
    if (filter->GetMaskValue() != 1)
    {
      std::cerr << "Mask value value is not the expected one: " << filter->GetMaskValue() << std::endl;
      return EXIT_FAILURE;
    }
  
    filter->SetFillValue(1);
    if (filter->GetFillValue() != 1)
    {
      std::cerr << "Fill value value is not the expected one: " << filter->GetFillValue() << std::endl;
      return EXIT_FAILURE;
    }
  
    filter->SetBackgroundMaskValue(1);
    if (filter->GetBackgroundMaskValue() != 1)
    {
      std::cerr << "Background mask value value is not the expected one: " << filter->GetBackgroundMaskValue()
                << std::endl;
      return EXIT_FAILURE;
    }
  
    try
    {
      int r = std::stoi(argv[4]);
      filter->SetInput(input->GetOutput());
      filter->SetMaskImage(input2->GetOutput());
      filter->SetRadius(r);
      filter->SetRank(0.5);
      filter->SetMaskValue(255);
      filter->SetFillValue(1);
      filter->SetBackgroundMaskValue(0);
      filter->Update();
    }
    catch (const itk::ExceptionObject & e)
    {
      std::cerr << "Exception detected: " << e.GetDescription();
      return EXIT_FAILURE;
    }
  
    // Generate test image
    using WriterType = itk::ImageFileWriter<ImageType>;
    auto writer = WriterType::New();
    writer->SetInput(filter->GetOutput());
    writer->SetFileName(argv[3]);
    writer->Update();
  
    return EXIT_SUCCESS;
  }
  