text: /*=========================================================================
   *
   *  Copyright Insight Software Consortium
   *
   *  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 "itkImageFileReader.h"
  #include "itkImageFileWriter.h"
  #include "itkSimpleFilterWatcher.h"
  
  #include "itkSaltAndPepperNoiseImageFilter.h"
  #include "itkTestingMacros.h"
  
  int itkSaltAndPepperNoiseImageFilterTest(int argc, char * argv[])
  {
  
    if( argc < 3 )
      {
      std::cerr << "usage: " << itkNameOfTestExecutableMacro(argv) << " intput output Probability" << std::endl;
      std::cerr << " input: the input image" << std::endl;
      std::cerr << " output: the output image" << std::endl;
      return EXIT_FAILURE;
      }
  
    constexpr unsigned int Dimension = 2;
  
    using PixelType = unsigned char;
    using ImageType = itk::Image< PixelType, Dimension >;
  
    using ReaderType = itk::ImageFileReader< ImageType >;
    ReaderType::Pointer reader = ReaderType::New();
    reader->SetFileName( argv[1] );
  
    using SaltAndPepperNoiseImageFilterType =
        itk::SaltAndPepperNoiseImageFilter< ImageType, ImageType >;
    SaltAndPepperNoiseImageFilterType::Pointer saltAndPepperNoiseImageFilter =
      SaltAndPepperNoiseImageFilterType::New();
  
    EXERCISE_BASIC_OBJECT_METHODS( saltAndPepperNoiseImageFilter, SaltAndPepperNoiseImageFilter,
      NoiseBaseImageFilter );
  
    double probability = 0.01;
    if( argc >= 4 )
      {
      probability = std::stod( argv[3] );
      }
    saltAndPepperNoiseImageFilter->SetProbability( probability );
    TEST_SET_GET_VALUE( probability, saltAndPepperNoiseImageFilter->GetProbability() );
  
    // change the default values and then set back to defaults so that
    // the original test image is still valid.
    PixelType saltValue = 245;
    saltAndPepperNoiseImageFilter->SetSaltValue( saltValue );
    TEST_SET_GET_VALUE( saltValue, saltAndPepperNoiseImageFilter->GetSaltValue() );
    PixelType pepperValue = 10;
    saltAndPepperNoiseImageFilter->SetPepperValue( pepperValue );
    TEST_SET_GET_VALUE( pepperValue, saltAndPepperNoiseImageFilter->GetPepperValue() );
    saltAndPepperNoiseImageFilter->SetSaltValue( itk::NumericTraits<PixelType>::max() );
    saltAndPepperNoiseImageFilter->SetPepperValue( itk::NumericTraits<PixelType>::NonpositiveMin() );
  
    saltAndPepperNoiseImageFilter->SetInput( reader->GetOutput() );
  
    itk::SimpleFilterWatcher watcher( saltAndPepperNoiseImageFilter, "SaltAndPepperNoiseImageFilter" );
  
    using WriterType = itk::ImageFileWriter< ImageType >;
    WriterType::Pointer writer = WriterType::New();
    writer->SetInput( saltAndPepperNoiseImageFilter->GetOutput() );
    writer->SetFileName( argv[2] );
  
    TRY_EXPECT_NO_EXCEPTION( writer->Update() );
  
    return EXIT_SUCCESS;
  }
  