Tests/FunctionTest/Util.cmake - third_party/github.com/Kitware/CMake - Git at Google

 function(tester)
  set (tester_res "${CMAKE_CURRENT_LIST_FILE}" PARENT_SCOPE)
 endfunction()
	function(tester)
	set (tester_res "${CMAKE_CURRENT_LIST_FILE}" PARENT_SCOPE)
	endfunction()