ENH: Test SetSeeds/GetSeeds container interface in region growing filters

Add round-trip smoke tests for SetSeeds/GetSeeds to
ConfidenceConnectedImageFilter, ConnectedThresholdImageFilter,
NeighborhoodConnectedImageFilter, and
VectorConfidenceConnectedImageFilter tests. Verifies ClearSeeds empties
the container and SetSeeds/GetSeeds round-trip correctly.

Author: blowekamp

Modules/Segmentation/RegionGrowing/test/itkConfidenceConnectedImageFilterTest.cxx

@@ -102,6 +102,22 @@ itkConfidenceConnectedImageFilterTest(int argc, char * argv[])
   // Exercise AddSeed() method
   filter->AddSeed(seed);
 
+  // Exercise SetSeeds/GetSeeds container interface
+  const FilterType::SeedsContainerType seeds = filter->GetSeeds();
+  filter->ClearSeeds();
+  if (!filter->GetSeeds().empty())
+  {
+    std::cerr << "Test FAILED!" << std::endl;
+    std::cerr << "Seed container not empty after ClearSeeds." << std::endl;
+    return EXIT_FAILURE;
+  }
+  filter->SetSeeds(seeds);
+  if (filter->GetSeeds() != seeds)
+  {
+    std::cerr << "Test FAILED!" << std::endl;
+    std::cerr << "Seed container from GetSeeds does not match SetSeeds input." << std::endl;
+    return EXIT_FAILURE;
+  }
 
   return EXIT_SUCCESS;
 }

Modules/Segmentation/RegionGrowing/test/itkConnectedThresholdImageFilterTest.cxx

@@ -79,6 +79,18 @@ itkConnectedThresholdImageFilterTest(int argc, char * argv[])
     return EXIT_FAILURE;
   }
 
+  // Exercise SetSeeds/GetSeeds container interface using SeedsContainerType alias
+  connectedThresholdFilter->AddSeed(seed);
+  const ConnectedThresholdImageFilterType::SeedsContainerType seeds = connectedThresholdFilter->GetSeeds();
+  connectedThresholdFilter->ClearSeeds();
+  connectedThresholdFilter->SetSeeds(seeds);
+  if (connectedThresholdFilter->GetSeeds() != seeds)
+  {
+    std::cerr << "Test FAILED !" << std::endl;
+    std::cerr << "Seed container from GetSeeds does not match SetSeeds input." << std::endl;
+    return EXIT_FAILURE;
+  }
+
   connectedThresholdFilter->SetSeed(seed);
 
 

Modules/Segmentation/RegionGrowing/test/itkNeighborhoodConnectedImageFilterTest.cxx

@@ -83,5 +83,22 @@ itkNeighborhoodConnectedImageFilterTest(int argc, char * argv[])
   writer->SetFileName(argv[2]);
   writer->Update();
 
+  // Exercise SetSeeds/GetSeeds container interface
+  const FilterType::SeedsContainerType seeds = filter->GetSeeds();
+  filter->ClearSeeds();
+  if (!filter->GetSeeds().empty())
+  {
+    std::cerr << "Test FAILED!" << std::endl;
+    std::cerr << "Seed container not empty after ClearSeeds." << std::endl;
+    return EXIT_FAILURE;
+  }
+  filter->SetSeeds(seeds);
+  if (filter->GetSeeds() != seeds)
+  {
+    std::cerr << "Test FAILED!" << std::endl;
+    std::cerr << "Seed container from GetSeeds does not match SetSeeds input." << std::endl;
+    return EXIT_FAILURE;
+  }
+
   return EXIT_SUCCESS;
 }

Modules/Segmentation/RegionGrowing/test/itkVectorConfidenceConnectedImageFilterTest.cxx

@@ -104,6 +104,23 @@ itkVectorConfidenceConnectedImageFilterTest(int argc, char * argv[])
   writer->SetFileName(argv[2]);
   writer->Update();
 
+  // Exercise SetSeeds/GetSeeds container interface
+  const FilterType::SeedsContainerType seeds = filter->GetSeeds();
+  filter->ClearSeeds();
+  if (!filter->GetSeeds().empty())
+  {
+    std::cerr << "Test FAILED!" << std::endl;
+    std::cerr << "Seed container not empty after ClearSeeds." << std::endl;
+    return EXIT_FAILURE;
+  }
+  filter->SetSeeds(seeds);
+  if (filter->GetSeeds() != seeds)
+  {
+    std::cerr << "Test FAILED!" << std::endl;
+    std::cerr << "Seed container from GetSeeds does not match SetSeeds input." << std::endl;
+    return EXIT_FAILURE;
+  }
+
   // Exercise SetSeed() method
   filter->SetSeed(seed1);