Fix #5421 - define SWIG_PYTHON_SILENT_MEMLEAK to shush the warning

ProjectMacros.cmake

@@ -357,6 +357,7 @@ macro(MAKE_SWIG_TARGET NAME SIMPLENAME KEY_I_FILE I_FILES PARENT_TARGET PARENT_S
     )
 
     target_compile_definitions(${swig_target} PRIVATE SHARED_OS_LIBS)
+    target_compile_definitions(${swig_target} PRIVATE SWIG_PYTHON_SILENT_MEMLEAK) # Shush it, cf #5421
     set_target_properties(${swig_target} PROPERTIES OUTPUT_NAME _${LOWER_NAME})
     set_target_properties(${swig_target} PROPERTIES PREFIX "")
     set_target_properties(${swig_target} PROPERTIES ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_ARCHIVE_OUTPUT_DIRECTORY}/python/")

src/cli/CMakeLists.txt

@@ -507,6 +507,14 @@ if(BUILD_TESTING)
     PASS_REGULAR_EXPRESSION "Hello from -x, at .\\\\test_folder\\\\hello.xml"
   )
 
+  add_test(NAME OpenStudioCLI.execute_python_script.no_memory_leak
+    COMMAND $<TARGET_FILE:openstudio> execute_python_script memleak_source.py
+    WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/test/"
+  )
+  set_tests_properties(OpenStudioCLI.execute_python_script.no_memory_leak PROPERTIES
+    FAIL_REGULAR_EXPRESSION "swig/python detected a memory leak of type"
+  )
+
   # ============ EndForward a Path properly no matter the slashes employed ============
 
   # ============ Native Ruby Gems / Python Modules - C extensions =============

src/cli/test/memleak_source.py

@@ -0,0 +1,12 @@
+import openstudio
+import pytest
+
+def openstudio_import():
+    m = openstudio.model.Model()
+    raise ValueError("Throwing on purpose")
+
+def test_openstudio_import():
+    openstudio_import()
+
+if __name__ == "__main__":
+    pytest.main([__file__, "--capture=no", "--verbose"])