code: def check_configuration(self, file_path, test_program, custom_args):
          
          # checking filepath
          if not os.path.isdir(file_path):
              raise InvalidFilePath("INVALID CONFIGURATION: file path %s is not a directory" %
                  os.path.abspath(file_path)
              )
  
          if not test_program in IMPLEMENTED_TEST_PROGRAMS:
              raise InvalidTestProgram('The `%s` is unknown, or not yet implemented. Please chose another one.' % test_program)
  
          if custom_args:
              if not self.quiet and not ask("WARNING!!!\nYou are about to run the following command\n\n   $ %s\n\nAre you sure you still want to proceed [y/N]? " % self.get_cmd()):
                  raise CancelDueToUserRequest('Test cancelled...')
docs: Checks if configuration is ok.