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 <iostream>
  
  #include "itkImageToImageFilter.h"
  
  namespace itk
  {
  
  template <typename TInputImage, typename TOutputImage>
  class ImageToImageFilterTestHelper : public ImageToImageFilter< TInputImage, TOutputImage >
  {
  public:
    typedef ImageToImageFilterTestHelper                  Self;
    typedef ImageToImageFilter<TInputImage,TOutputImage>  Superclass;
    typedef SmartPointer<Self>                            Pointer;
    typedef SmartPointer<const Self>                      ConstPointer;
  
    itkNewMacro( Self );
  };
  
  }
  
  int itkImageToImageFilterTest(int, char* [] )
  {
  
    const unsigned int      ImageDimension = 3;
    typedef unsigned char   InputPixelType;
    typedef signed short    OutputPixelType;
  
    typedef itk::Image< InputPixelType,  ImageDimension >  InputImageType;
    typedef itk::Image< OutputPixelType, ImageDimension >  OutputImageType;
  
    typedef itk::ImageToImageFilterTestHelper< InputImageType, OutputImageType > FilterType;
  
    InputImageType::Pointer inputImage1 = InputImageType::New();
    InputImageType::Pointer inputImage2 = InputImageType::New();
    InputImageType::Pointer inputImage3 = InputImageType::New();
    InputImageType::Pointer inputImage4 = InputImageType::New();
  
    FilterType::Pointer filter = FilterType::New();
  
    filter->Print( std::cout );
    std::cout << "Name of Class = " << filter->GetNameOfClass() << std::endl;
    std::cout << "Name of Superclass = " << filter->Superclass::GetNameOfClass() << std::endl;
  
    filter->SetInput( inputImage1 );
    if( filter->GetInput() != inputImage1 )
      {
      std::cerr << "Error in Set/GetInput()" << std::endl;
      return EXIT_FAILURE;
      }
  
    filter->SetInput( inputImage2 );
    if( filter->GetInput() != inputImage2 )
      {
      std::cerr << "Error in Set/GetInput()" << std::endl;
      return EXIT_FAILURE;
      }
  
    filter->SetInput( 0, inputImage1 );
    if( filter->GetInput( 0 ) != inputImage1 )
      {
      std::cerr << "Error in Set/GetInput(n)" << std::endl;
      return EXIT_FAILURE;
      }
  
  
    filter->PushBackInput( inputImage2 );
    filter->PushBackInput( inputImage3 );
    filter->PushFrontInput( inputImage4 );
  
    if( filter->GetInput( 0 ) != inputImage4 )
      {
      std::cerr << "Error in PushFrontInput" << std::endl;
      return EXIT_FAILURE;
      }
  
    if( filter->GetInput( 1 ) != inputImage1 )
      {
      std::cerr << "Error in PushFrontInput" << std::endl;
      return EXIT_FAILURE;
      }
  
    if( filter->GetInput( 2 ) != inputImage2 )
      {
      std::cerr << "Error in PushBackInput" << std::endl;
      return EXIT_FAILURE;
      }
  
    if( filter->GetInput( 3 ) != inputImage3 )
      {
      std::cerr << "Error in PushBackInput" << std::endl;
      return EXIT_FAILURE;
      }
  
    return EXIT_SUCCESS;
  }
  