call filter once in each test

Author: Jibola

tests/lookup_/tests.py

@@ -88,20 +88,19 @@ def setUpTestData(cls):
 
     def _test_none_filter_nullable_json(self, op, predicate, field):
         with self.assertNumQueries(1) as ctx:
-            list(NullableJSONModel.objects.filter(**{f"{field}__{op}": None}))
+            self.assertQuerySetEqual(
+                NullableJSONModel.objects.filter(**{f"{field}__{op}": None}),
+                [],
+            )
         self.assertAggregateQuery(
             ctx.captured_queries[0]["sql"],
             "lookup__nullablejsonmodel",
             [{"$match": {"$and": [{"$exists": False}, predicate(field)]}}],
         )
-        self.assertQuerySetEqual(
-            NullableJSONModel.objects.filter(**{f"{field}__{op}": None}),
-            [],
-        )
 
     def _test_none_filter_binary_operator(self, op, predicate, field):
         with self.assertNumQueries(1) as ctx:
-            list(Book.objects.filter(**{f"{field}__{op}": None}))
+            self.assertQuerySetEqual(Book.objects.filter(**{f"{field}__{op}": None}), [])
         self.assertAggregateQuery(
             ctx.captured_queries[0]["sql"],
             "lookup__book",
@@ -116,7 +115,6 @@ def _test_none_filter_binary_operator(self, op, predicate, field):
                 }
             ],
         )
-        self.assertQuerySetEqual(Book.objects.filter(**{f"{field}__{op}": None}), [])
 
     def _test_with_raw_data(self, model, test_function):
         collection = connection.database.get_collection(model._meta.db_table)