'Specific test for the case when the input data is valid but the coach does not exist.'

@ddt.data(*AUTH_ATTRS)
def test_patch_detail_coach_does_not_exist(self, auth_attr):

    data = {'max_students_allowed': 111, 'display_name': 'CCX    Title', 'coach_email': 'inexisting_email@test.com'}
    resp = self.client.patch(self.detail_url, data, format='json', HTTP_AUTHORIZATION=getattr(self, auth_attr))
    self.expect_error(status.HTTP_404_NOT_FOUND, 'coach_user_does_not_exist', resp)
