Add test for nested serializers

Author: dbrgn

tests/serializers.py

@@ -31,7 +31,7 @@ def get_request_info(self, teacher):
         )
 
 
-class SchoolSerializer(serializers.ModelSerializer):
+class SchoolSerializer(DynamicFieldsMixin, serializers.ModelSerializer):
     """
     Interesting enough serializer because the TeacherSerializer
     will use ListSerializer due to the `many=True`

tests/test_mixins.py

@@ -141,9 +141,8 @@ def test_as_nested_serializer(self):
         """
         Nested serializers are not filtered.
         """
-
         rf = RequestFactory()
-        request = rf.get('/api/v1/schools/1/')
+        request = rf.get('/api/v1/schools/1/?fields=teachers')
 
         school = School.objects.create()
         teachers = [
@@ -168,6 +167,5 @@ def test_as_nested_serializer(self):
                         ('request_info', request_info.format(teachers[1].id))
                     ])
                 ],
-                'id': school.id
             }
         )