function(check_exists file)
  if(NOT EXISTS "${file}")
    string(APPEND RunCMake_TEST_FAILED "${file} does not exist\n")
  endif()
  set(RunCMake_TEST_FAILED "${RunCMake_TEST_FAILED}" PARENT_SCOPE)
endfunction()

function(check_not_exists file)
  if(EXISTS "${file}")
    string(APPEND RunCMake_TEST_FAILED "${file} exists\n")
  endif()
  set(RunCMake_TEST_FAILED "${RunCMake_TEST_FAILED}" PARENT_SCOPE)
endfunction()

if(cmp0116_step EQUAL 3)
  check_not_exists("${RunCMake_TEST_BINARY_DIR}/topstamp.txt")
  check_not_exists("${RunCMake_TEST_BINARY_DIR}/Subdirectory/substamp.txt")
endif()