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 "itkLabelStatisticsKeepNObjectsImageFilter.h"
  
  #include "itkTestingMacros.h"
  
  int itkLabelStatisticsKeepNObjectsImageFilterTest1(int argc, char * argv[])
  {
  
    if( argc != 8 )
      {
      std::cerr << "Usage: " << argv[0] << " input feature output";
      std::cerr << " background numberOfObjectsToKeep";
      std::cerr << " reverseOrdering attribute" << std::endl;
      return EXIT_FAILURE;
      }
  
    constexpr unsigned int dim = 2;
  
    using IType = itk::Image< unsigned char, dim >;
  
    using ReaderType = itk::ImageFileReader< IType >;
    ReaderType::Pointer reader = ReaderType::New();
    reader->SetFileName( argv[1] );
  
    ReaderType::Pointer reader2 = ReaderType::New();
    reader2->SetFileName( argv[2] );
  
    using LabelKeepNObjectsType = itk::LabelStatisticsKeepNObjectsImageFilter< IType, IType >;
    LabelKeepNObjectsType::Pointer KeepNObjects = LabelKeepNObjectsType::New();
  
    KeepNObjects->SetInput( reader->GetOutput() );
    KeepNObjects->SetFeatureImage( reader2->GetOutput() );
  
    //testing get/set BackgroundValue macro
    int BackgroundValue = ( atoi(argv[4]) );
    KeepNObjects->SetBackgroundValue( BackgroundValue );
    TEST_SET_GET_VALUE( BackgroundValue, KeepNObjects->GetBackgroundValue() );
  
    //testing get and set macros for Lambda
    unsigned int numberOfObjects = atoi( argv[5] );
    KeepNObjects->SetNumberOfObjects( numberOfObjects );
    TEST_SET_GET_VALUE( numberOfObjects, KeepNObjects->GetNumberOfObjects() );
  
    //testing boolean macro for ReverseOrdering
    KeepNObjects->ReverseOrderingOn();
    TEST_SET_GET_VALUE( true, KeepNObjects->GetReverseOrdering() );
  
    KeepNObjects->ReverseOrderingOff();
    TEST_SET_GET_VALUE( false, KeepNObjects->GetReverseOrdering() );
  
    //testing get and set macros or ReverseOrdering
    bool reverseOrdering = atoi( argv[6] );
    KeepNObjects->SetReverseOrdering( reverseOrdering );
    TEST_SET_GET_VALUE( reverseOrdering , KeepNObjects->GetReverseOrdering() );
  
    //testing get and set macros for Attribute
    LabelKeepNObjectsType::AttributeType attribute = atoi( argv[7] );
    KeepNObjects->SetAttribute( attribute );
    TEST_SET_GET_VALUE( attribute, KeepNObjects->GetAttribute() );
  
    itk::SimpleFilterWatcher watcher(KeepNObjects, "filter");
  
    using WriterType = itk::ImageFileWriter< IType >;
    WriterType::Pointer writer = WriterType::New();
    writer->SetInput( KeepNObjects->GetOutput() );
    writer->SetFileName( argv[3] );
    writer->UseCompressionOn();
  
    TRY_EXPECT_NO_EXCEPTION( writer->Update() );
  
    std::cout << "Test Complete!" << std::endl;
  
    return EXIT_SUCCESS;
  }
  