Add CMAKE_GUARD argument.
Fix warning:
CMake Warning at cmake/modules/DunePythonTestCommand.cmake:56 (message):
Unparsed arguments in dune_python_add_test: This often indicates typos!
Call Stack (most recent call first):
dune/python/test/CMakeLists.txt:6 (dune_python_add_test)
Edited by Samuel Burbulla