def test_parse_order_by_params_success(self):
"""Test parse of a order_by param successfully."""
order_params = {"usage": "asc"}
serializer = OrderBySerializer(data=order_params)
self.assertTrue(serializer.is_valid())
def test_order_by_params_invalid_fields_or(self):
"""Test parse of order_by params for invalid fields."""
order_params = {"or:cost": "asc", "invalid": "param"}
serializer = OrderBySerializer(data=order_params)
with self.assertRaises(serializers.ValidationError):
serializer.is_valid(raise_exception=True)
def test_order_by_params_invalid_fields(self):
"""Test parse of order_by params for invalid fields."""
order_params = {'cost': 'asc', 'invalid': 'param'}
serializer = OrderBySerializer(data=order_params)
with self.assertRaises(serializers.ValidationError):
serializer.is_valid(raise_exception=True)
