Merge pull request #44 from jhlegarreta/IncreaseFrequencyExpandViaInverseFFTImageFilterCoverage

ENH: Increase itk::FrequencyExpandViaFFTImageFilter coverage.

Author: phcerdan

test/itkFrequencyExpandAndShrinkTest.cxx

@@ -77,6 +77,7 @@ runFrequencyExpandAndShrinkTest( const std::string & inputImage, const std::stri
   typedef typename FFTFilterType::OutputImageType                   ComplexImageType;
   typedef itk::InverseFFTImageFilter< ComplexImageType, ImageType > InverseFFTFilterType;
   size_t resizeFactor = 2;
+
   /*********** EXPAND ***************/
   typedef itk::FrequencyExpandImageFilter< ComplexImageType > ExpandType;
   typename ExpandType::Pointer expandFilter = ExpandType::New();
@@ -87,8 +88,16 @@ runFrequencyExpandAndShrinkTest( const std::string & inputImage, const std::stri
   typedef itk::FrequencyExpandViaInverseFFTImageFilter< ComplexImageType > ExpandViaInverseFFTType;
   typename ExpandViaInverseFFTType::Pointer expandViaInverseFFTFilter = ExpandViaInverseFFTType::New();
   expandViaInverseFFTFilter->SetInput(fftFilter->GetOutput());
+
+  typename ExpandViaInverseFFTType::ExpandFactorsType expandFactors;
+  expandFactors.Fill( resizeFactor );
   expandViaInverseFFTFilter->SetExpandFactors(resizeFactor);
-  expandViaInverseFFTFilter->Update();
+  TEST_SET_GET_VALUE( expandFactors, expandViaInverseFFTFilter->GetExpandFactors() );
+
+  expandViaInverseFFTFilter->SetExpandFactors(expandFactors);
+  TEST_SET_GET_VALUE( expandFactors, expandViaInverseFFTFilter->GetExpandFactors() );
+
+  TRY_EXPECT_NO_EXCEPTION( expandViaInverseFFTFilter->Update() );
 
 // #ifdef ITK_VISUALIZE_TESTS
 //   typename InverseFFTFilterType::Pointer inverseFFTExpand1 = InverseFFTFilterType::New();