ENH: Convert 12 ITKCommon CTests to GoogleTest framework

Modules/Core/Common/test/CMakeLists.txt

@@ -6,7 +6,6 @@ set(
   itkCommandObserverObjectTest.cxx
   itkAdaptorComparisonTest.cxx
   itkCovariantVectorGeometryTest.cxx
-  itkDataTypeTest.cxx
   itkDecoratorTest.cxx
   itkExtractImage3Dto2DTest.cxx
   itkExtractImageTest.cxx
@@ -31,9 +30,6 @@ set(
   itkImageSliceIteratorTest.cxx
   itkRGBPixelTest.cxx
   itkLightObjectTest.cxx
-  itkBoundingBoxTest.cxx
-  itkBoundaryConditionTest.cxx
-  itkByteSwapTest.cxx
   itkSparseImageTest.cxx
   itkSimpleFilterWatcherTest.cxx
   itkSymmetricEllipsoidInteriorExteriorSpatialFunctionTest.cxx
@@ -64,8 +60,6 @@ set(
   itkRealTimeClockTest.cxx
   itkRealTimeIntervalTest.cxx
   itkRealTimeStampTest.cxx
-  itkTimeStampTest.cxx
-  itkIntTypesTest.cxx
   itkBSplineKernelFunctionTest.cxx
   itkArrayTest.cxx
   itkImageIteratorTest.cxx
@@ -76,12 +70,6 @@ set(
   itkDirectoryTest.cxx
   itkObjectStoreTest.cxx
   itkObjectFactoryTest.cxx
-  itkEventObjectTest.cxx
-  itkMathCastWithRangeCheckTest.cxx
-  itkMathRoundProfileTest1.cxx
-  itkMathRoundTest.cxx
-  itkMathRoundTest2.cxx
-  itkModifiedTimeTest.cxx
   itkMultipleLogOutputTest.cxx
   itkVectorTest.cxx
   itkImageTest.cxx
@@ -103,7 +91,6 @@ set(
   itkTimeProbeTest2.cxx
   itkSpatialOrientationTest.cxx
   itkStdStreamStateSaveTest.cxx
-  itkVersionTest.cxx
   VNLSparseLUSolverTraitsTest.cxx
   itkSobelOperatorImageConvolutionTest.cxx
   itkSobelOperatorImageFilterTest.cxx
@@ -225,13 +212,6 @@ target_link_libraries(
 )
 itk_add_test(NAME SystemInformation COMMAND itkSystemInformation)
 
-itk_add_test(
-  NAME itkVersionTest
-  COMMAND
-    ITKCommon1TestDriver
-    itkVersionTest
-)
-
 if(ITK_BUILD_SHARED_LIBS)
   ## Create a library to test ITK loadable factories
   set(FactoryTest_Source itkFactoryTestLib.cxx)
@@ -321,12 +301,6 @@ itk_add_test(
     ITKCommon1TestDriver
     itkCovariantVectorGeometryTest
 )
-itk_add_test(
-  NAME itkDataTypeTest
-  COMMAND
-    ITKCommon1TestDriver
-    itkDataTypeTest
-)
 itk_add_test(
   NAME itkDecoratorTest
   COMMAND
@@ -469,30 +443,6 @@ itk_add_test(
     ITKCommon2TestDriver
     itkAutoPointerTest
 )
-itk_add_test(
-  NAME itkTimeStampTest
-  COMMAND
-    ITKCommon1TestDriver
-    itkTimeStampTest
-)
-itk_add_test(
-  NAME itkBoundingBoxTest
-  COMMAND
-    ITKCommon1TestDriver
-    itkBoundingBoxTest
-)
-itk_add_test(
-  NAME itkBoundaryConditionTest
-  COMMAND
-    ITKCommon1TestDriver
-    itkBoundaryConditionTest
-)
-itk_add_test(
-  NAME itkByteSwapTest
-  COMMAND
-    ITKCommon1TestDriver
-    itkByteSwapTest
-)
 itk_add_test(
   NAME itkBSplineInterpolationWeightFunctionTest
   COMMAND
@@ -629,42 +579,6 @@ itk_add_test(
     ITKCommon2TestDriver
     itkConstShapedNeighborhoodIteratorTest2
 )
-itk_add_test(
-  NAME itkEventObjectTest
-  COMMAND
-    ITKCommon1TestDriver
-    itkEventObjectTest
-)
-itk_add_test(
-  NAME itkMathCastWithRangeCheckTest
-  COMMAND
-    ITKCommon1TestDriver
-    itkMathCastWithRangeCheckTest
-)
-itk_add_test(
-  NAME itkMathRoundProfileTest1
-  COMMAND
-    ITKCommon1TestDriver
-    itkMathRoundProfileTest1
-)
-itk_add_test(
-  NAME itkMathRoundTest
-  COMMAND
-    ITKCommon1TestDriver
-    itkMathRoundTest
-)
-itk_add_test(
-  NAME itkMathRoundTest2
-  COMMAND
-    ITKCommon1TestDriver
-    itkMathRoundTest2
-)
-itk_add_test(
-  NAME itkModifiedTimeTest
-  COMMAND
-    ITKCommon1TestDriver
-    itkModifiedTimeTest
-)
 itk_add_test(
   NAME itkExceptionObjectTest
   COMMAND
@@ -1245,12 +1159,6 @@ itk_add_test(
     --full-output
     itkNumericTraitsTest
 )
-itk_add_test(
-  NAME itkIntTypesTest
-  COMMAND
-    ITKCommon1TestDriver
-    itkIntTypesTest
-)
 itk_add_test(
   NAME itkOctreeTest
   COMMAND
@@ -1884,6 +1792,17 @@ set(
   itkWeakPointerGTest.cxx
   itkCommonTypeTraitsGTest.cxx
   itkMathGTest.cxx
+  itkDataTypeGTest.cxx
+  itkBoundaryConditionGTest.cxx
+  itkBoundingBoxGTest.cxx
+  itkTimeStampGTest.cxx
+  itkEventObjectGTest.cxx
+  itkByteSwapGTest.cxx
+  itkIntTypesGTest.cxx
+  itkMathCastWithRangeCheckGTest.cxx
+  itkMathRoundGTest.cxx
+  itkModifiedTimeGTest.cxx
+  itkVersionGTest.cxx
   itkMetaDataDictionaryGTest.cxx
   itkSpatialOrientationAdaptorGTest.cxx
   itkAnatomicalOrientationGTest.cxx

Modules/Core/Common/test/itkBoundaryConditionTest.cxx → Modules/Core/Common/test/itkBoundaryConditionGTest.cxx

@@ -19,14 +19,15 @@
 #include "itkImageRegionIterator.h"
 #include "itkConstantBoundaryCondition.h"
 #include "itkNeighborhoodIterator.h"
+#include "itkGTest.h"
+
 namespace
 {
 void
 println(const char * c)
 {
   std::cout << std::endl << c << std::endl;
 }
-} // namespace
 
 template <typename TPixel>
 void
@@ -63,94 +64,36 @@ filln(itk::Image<float, 2> * img)
     }
   }
 }
+} // namespace
 
-int
-itkBoundaryConditionTest(int, char *[])
+TEST(BoundaryCondition, ConstantBoundaryAtImageEdge)
 {
-
   using ImageType2D = itk::Image<float, 2>;
-  using ImageType3D = itk::Image<float, 3>;
-  using ImageTypeND = itk::Image<float, 4>;
 
   println("Creating some images");
 
-  // Create some images
   itk::ImageRegion<2> Region2D;
-  itk::ImageRegion<3> Region3D;
-  itk::ImageRegion<4> RegionND;
-
-  itk::Size<2> size2D;
+  itk::Size<2>        size2D;
   size2D[0] = 30;
   size2D[1] = 15;
-
-  itk::Size<3> size3D;
-  size3D[0] = 100;
-  size3D[1] = 100;
-  size3D[2] = 10;
-
-  itk::Size<4> sizeND;
-  sizeND[0] = 10;
-  sizeND[1] = 10;
-  sizeND[2] = 4;
-  sizeND[3] = 2;
-
   itk::Index<2> orig2D;
   orig2D[0] = 0;
   orig2D[1] = 0;
-
-  itk::Index<3> orig3D;
-  orig3D[0] = 0;
-  orig3D[1] = 0;
-  orig3D[2] = 0;
-
-  itk::Index<4> origND;
-  origND[0] = 0;
-  origND[1] = 0;
-  origND[2] = 0;
-  origND[3] = 0;
-
   Region2D.SetSize(size2D);
-  Region3D.SetSize(size3D);
-  RegionND.SetSize(sizeND);
-
   Region2D.SetIndex(orig2D);
-  Region3D.SetIndex(orig3D);
-  RegionND.SetIndex(origND);
 
   auto image2D = ImageType2D::New();
-  auto image3D = ImageType3D::New();
-  auto imageND = ImageTypeND::New();
-
   image2D->SetRegions(Region2D);
-  image3D->SetRegions(Region3D);
-  imageND->SetRegions(RegionND);
-
   image2D->Allocate();
-  image3D->Allocate();
-  imageND->Allocate();
 
   println("Initializing some images");
-
   filln(image2D);
-  image3D->FillBuffer(1.0f);
-  imageND->FillBuffer(1.0f);
 
   println("Initializing smart neighborhood iterators");
   itk::Size<2> sz2;
   sz2[0] = 2;
   sz2[1] = 1;
 
-  itk::Size<3> sz3;
-  sz3[0] = 2;
-  sz3[1] = 3;
-  sz3[2] = 1;
-
-  itk::Size<4> szN;
-  szN[0] = 1;
-  szN[1] = 3;
-  szN[2] = 1;
-  szN[3] = 1;
-
   using SmartIteratorType = itk::NeighborhoodIterator<ImageType2D, itk::ConstantBoundaryCondition<ImageType2D>>;
 
   SmartIteratorType it2d(sz2, image2D, image2D->GetRequestedRegion());
@@ -167,11 +110,67 @@ itkBoundaryConditionTest(int, char *[])
   --it2d;
   tempN = it2d.GetNeighborhood();
 
-
   printn(tempN.GetBufferReference(), tempN.GetSize());
 
+  // The 2D image is 30x15, filled with 100*j + i.
+  // The last pixel is at (29, 14): value = 100*14 + 29 = 1429.
+  // With radius {2,1} and ConstantBoundaryCondition(0):
+  // Row 0 (j=13): pixels at x=27,28,29,30(OOB),31(OOB) -> 1327, 1328, 1329, 0, 0
+  // Row 1 (j=14): pixels at x=27,28,29,30(OOB),31(OOB) -> 1427, 1428, 1429, 0, 0
+  // Row 2 (j=15, OOB): all 0 -> 0, 0, 0, 0, 0
+  const auto & buf = tempN.GetBufferReference();
+  EXPECT_EQ(buf[0], 1327.0f);
+  EXPECT_EQ(buf[1], 1328.0f);
+  EXPECT_EQ(buf[2], 1329.0f);
+  EXPECT_EQ(buf[3], 0.0f);
+  EXPECT_EQ(buf[4], 0.0f);
+  EXPECT_EQ(buf[5], 1427.0f);
+  EXPECT_EQ(buf[6], 1428.0f);
+  EXPECT_EQ(buf[7], 1429.0f);
+  EXPECT_EQ(buf[8], 0.0f);
+  EXPECT_EQ(buf[9], 0.0f);
+  EXPECT_EQ(buf[10], 0.0f);
+  EXPECT_EQ(buf[11], 0.0f);
+  EXPECT_EQ(buf[12], 0.0f);
+  EXPECT_EQ(buf[13], 0.0f);
+  EXPECT_EQ(buf[14], 0.0f);
 
   std::cout << " ________________________________________ " << std::endl;
+}
+
+TEST(BoundaryCondition, ZeroFluxNeumannBoundaryTraversal)
+{
+  using ImageType2D = itk::Image<float, 2>;
+
+  itk::ImageRegion<2> Region2D;
+  itk::Size<2>        size2D;
+  size2D[0] = 30;
+  size2D[1] = 15;
+  itk::Index<2> orig2D;
+  orig2D[0] = 0;
+  orig2D[1] = 0;
+  Region2D.SetSize(size2D);
+  Region2D.SetIndex(orig2D);
+
+  auto image2D = ImageType2D::New();
+  image2D->SetRegions(Region2D);
+  image2D->Allocate();
+  filln(image2D);
+
+  itk::Size<2> sz2;
+  sz2[0] = 2;
+  sz2[1] = 1;
+
+  using SmartIteratorType = itk::NeighborhoodIterator<ImageType2D, itk::ConstantBoundaryCondition<ImageType2D>>;
+
+  SmartIteratorType it2d(sz2, image2D, image2D->GetRequestedRegion());
+
+  itk::ConstantBoundaryCondition<ImageType2D> cbc;
+  cbc.SetConstant(0.0f);
+  it2d.OverrideBoundaryCondition(&cbc);
+
+  SmartIteratorType::NeighborhoodType temp2N;
+  temp2N = it2d.GetNeighborhood(); // initialize
 
   itk::ZeroFluxNeumannBoundaryCondition<ImageType2D> neumann;
   for (int yak = 0; yak < 2; ++yak)
@@ -186,6 +185,6 @@ itkBoundaryConditionTest(int, char *[])
 
     it2d.OverrideBoundaryCondition(&neumann);
   }
-
-  return EXIT_SUCCESS;
+  // If we reach here without crashing, the test passes
+  EXPECT_TRUE(it2d.IsAtEnd());
 }