def METHOD_NAME(self):
    """GET is allowed"""
    # login testuser
    self.client.login(
        username='testuser_domainuser_api', password='pzJk89y9aQYUkAfwJ5KN'
    )
    # get response
    response = self.client.get('/api/domainuser/')
    # compare
    self.assertEqual(response.status_code, 200)