ENH: Add test for itk::MeshRegion

Add test for the `itk::MeshRegion` class.

Modules/Core/Mesh/test/CMakeLists.txt

@@ -3,6 +3,7 @@ set(ITKMeshTests
     itkAutomaticTopologyMeshSourceTest.cxx
     itkImageToParametricSpaceFilterTest.cxx
     itkInteriorExteriorMeshFilterTest.cxx
+    itkMeshRegionTest.cxx
     itkParametricSpaceToImageSpaceMeshFilterTest.cxx
     itkRegularSphereMeshSourceTest.cxx
     itkRegularSphereMeshSourceTest2.cxx
@@ -85,6 +86,12 @@ itk_add_test(
   COMMAND
   ITKMeshTestDriver
   itkInteriorExteriorMeshFilterTest)
+itk_add_test(
+  NAME
+  itkMeshRegionTest
+  COMMAND
+  ITKMeshTestDriver
+  itkMeshRegionTest)
 itk_add_test(
   NAME
   itkRegularSphereMeshSourceTest

Modules/Core/Mesh/test/itkMeshRegionTest.cxx

@@ -0,0 +1,45 @@
+/*=========================================================================
+ *
+ *  Copyright NumFOCUS
+ *
+ *  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
+ *
+ *         https://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 "itkMeshRegion.h"
+#include "itkTestingMacros.h"
+
+
+int
+itkMeshRegionTest(int, char *[])
+{
+
+  itk::MeshRegion meshRegion{};
+
+  ITK_EXERCISE_BASIC_OBJECT_METHODS((&meshRegion), MeshRegion, Region);
+
+
+  ITK_TEST_SET_GET_VALUE(itk::MeshRegion::Superclass::RegionEnum::ITK_UNSTRUCTURED_REGION, meshRegion.GetRegionType());
+
+  itk::SizeValueType numRegions = 10;
+  meshRegion.SetNumberOfRegions(numRegions);
+  ITK_TEST_SET_GET_VALUE(numRegions, meshRegion.GetNumberOfRegions());
+
+  itk::SizeValueType idx = 1;
+  meshRegion.SetRegion(idx);
+  ITK_TEST_SET_GET_VALUE(idx, meshRegion.GetRegion());
+
+
+  std::cout << "Test finished." << std::endl;
+  return EXIT_SUCCESS;
+}