void TestMergeLabel()
{
mitk::Image::Pointer image = dynamic_cast<mitk::Image*>(mitk::IOUtil::Load(GetTestDataFilePath("Multilabel/LabelSetTestInitializeImage.nrrd"))[0].GetPointer());
m_LabelSetImage = 0;
m_LabelSetImage = mitk::LabelSetImage::New();
m_LabelSetImage->InitializeByLabeledImage(image);
CPPUNIT_ASSERT_MESSAGE("Image - number of labels is not 6", m_LabelSetImage->GetNumberOfLabels() == 6);
// 2ndMin because of the exterior label = 0
CPPUNIT_ASSERT_MESSAGE("Wrong MIN value", m_LabelSetImage->GetStatistics()->GetScalarValueMin() == 0);
CPPUNIT_ASSERT_MESSAGE("Wrong MAX value", m_LabelSetImage->GetStatistics()->GetScalarValueMax() == 7);
m_LabelSetImage->GetActiveLabelSet()->SetActiveLabel(6);
// Merge label 7 with label 0. Result should be that label 7 is not present any more
m_LabelSetImage->MergeLabel(6, 7);
CPPUNIT_ASSERT_MESSAGE("Label with value 7 was not remove from the image", m_LabelSetImage->GetStatistics()->GetScalarValueMax() == 6);
m_LabelSetImage->GetStatistics()->GetScalarValue2ndMax();
// Count all pixels with value 7 = 823
// Count all pixels with value 6 = 507
// Check if merge label has 507 + 823 = 1330 pixels
CPPUNIT_ASSERT_MESSAGE("Label with value 7 was not remove from the image", m_LabelSetImage->GetStatistics()->GetCountOfMaxValuedVoxels() == 1330);
}
