properly disable tests which contain ParticleDistributions

disable the tests so that CTest lists them as "disabled", instead of just keeping them away from CTest

Tests/Examples/CMakeLists.txt

@@ -27,12 +27,12 @@ endforeach()
 
 ####################################################################################################
 # The following tests contain a particle distribution, which is not supported right now. To keep
-# the code for the time once it is newly implemented, the tests are only deactivated, not deleted.
+# the code for the time once it is newly implemented, the tests are only disabled, not deleted.
 ####################################################################################################
 set (ExampleNamesWithParticleDistribution
         CylindersWithSizeDistribution
         TwoTypesOfCylindersWithSizeDistribution
-		Interference2DLatticeSumOfRotated)
+        Interference2DLatticeSumOfRotated)
 
 set(test_script ${TOOL_DIR}/code/batch-plot.py)
 
@@ -43,11 +43,7 @@ set(test_script ${TOOL_DIR}/code/batch-plot.py)
 function(run_example example label)
     get_filename_component(name ${example} NAME_WE)
     set(test_name Example.run.${name})
-    if (${name} IN_LIST ExampleNamesWithParticleDistribution)
-        message("Test ${test_name} contains ParticleDistribution and will not be executed")
-        return()
-    endif()
-	
+
     add_test(${test_name}
         env PYTHONPATH=${CMAKE_LIBRARY_OUTPUT_DIRECTORY}
         BORNAGAIN_EXAMPLE_DATA_DIR=${EXAMPLES_DIR}/data
@@ -56,6 +52,9 @@ function(run_example example label)
     if(NOT label STREQUAL "")
         set_tests_properties(${test_name} PROPERTIES LABELS ${label})
     endif()
+    if (${name} IN_LIST ExampleNamesWithParticleDistribution)
+        set_tests_properties(${test_name} PROPERTIES DISABLED TRUE)
+    endif()
 endfunction()
 
 function(run_examples examples label)
@@ -96,10 +95,6 @@ function(test_example example tolerance)
     get_filename_component(EXAMPLE_DIR ${script_path} DIRECTORY)
 
     set(test_name Example.persist.${EXAMPLE_NAME})
-    if (${EXAMPLE_NAME} IN_LIST ExampleNamesWithParticleDistribution)
-        message("Test ${test_name} contains ParticleDistribution and will not be executed")
-        return()
-    endif()
 
     set(PYPERSIST_TOLERANCE ${tolerance})
 
@@ -108,6 +103,9 @@ function(test_example example tolerance)
     configure_file(PyPersistence.py.in ${example_mod} @ONLY)
 
     add_test(${test_name} ${Python3_EXECUTABLE} -B ${example_mod})
+    if (${EXAMPLE_NAME} IN_LIST ExampleNamesWithParticleDistribution)
+        set_tests_properties(${test_name} PROPERTIES DISABLED TRUE)
+    endif()
 endfunction()
 
 test_example(scatter2d/ApproximationDA 2e-10)