          expected = [
              {'url': 'http://testserver/onetoonetarget/1/', 'name': 'target-1', 'nullable_source': 'http://testserver/nullableonetoonesource/1/'},
              {'url': 'http://testserver/onetoonetarget/2/', 'name': 'target-2', 'nullable_source': None},
          ]
          self.assertEqual(serializer.data, expected)
 
</s> remove         self.assertEqual(serializer.data, expected)
 </s> add         assert serializer.data == expected </s> remove         self.assertEqual(new_serializer.data, expected)
 </s> add         assert new_serializer.data == expected </s> remove         self.assertEqual(serializer.data, expected)
 </s> add         assert serializer.data == expected </s> remove             self.assertEqual(serializer.data, expected)
 </s> add             assert serializer.data == expected </s> remove         self.assertEqual(serializer.data, expected)
 </s> add         assert serializer.data == expected
        assert serializer.data == expected
          expected = [
              {'url': 'http://testserver/onetoonetarget/1/', 'name': 'target-1', 'nullable_source': 'http://testserver/nullableonetoonesource/1/'},
              {'url': 'http://testserver/onetoonetarget/2/', 'name': 'target-2', 'nullable_source': None},
          ]
        assert serializer.data == expected
keep keep keep keep replace
 converted test asserts of hyperlin relations to pytest 
tests/test_relations_hyperlink.py