Sets properties right before calling run.

          ``test_args`` The arguments to pass to the test runner.
          ``clear``     Boolean. Set to True if we should clear console before
                        running the tests.
          ``debug``     Boolean. Set to True if we want to print debugging
                        information.

def set_up(self, test_args=(), clear=True, debug=False):
        """
        Sets properties right before calling run.

          ``test_args`` The arguments to pass to the test runner.
          ``clear``     Boolean. Set to True if we should clear console before
                        running the tests.
          ``debug``     Boolean. Set to True if we want to print debugging
                        information.
        """
        self.test_args = test_args
        self.debug, self.clear = debug, clear