Altered test introduced in f19a3669b8 for the sake of readability. refs #14786

1 files changed, 9 insertions, 4 deletions

diff --git a/tests/model_fields/tests.py b/tests/model_fields/tests.py
index 0d327d6ae6..0ad0e168d7 100644
--- a/tests/model_fields/tests.py
+++ b/tests/model_fields/tests.py
@@ -672,12 +672,17 @@ class CustomFieldTests(unittest.TestCase):
         Regression test for #14786 -- Test that field values are not prepared
         twice in get_db_prep_lookup().
         """
-        prepare_count = [0]
         class NoopField(models.TextField):
+            def __init__(self, *args, **kwargs):
+                self.prep_value_count = 0
+                super(NoopField, self).__init__(*args, **kwargs)
+
             def get_prep_value(self, value):
-                prepare_count[0] += 1
+                self.prep_value_count += 1
                 return super(NoopField, self).get_prep_value(value)
 
         field = NoopField()
-        field.get_db_prep_lookup('exact', 'TEST', connection=connection, prepared=False)
-        self.assertEqual(prepare_count[0], 1)
+        field.get_db_prep_lookup(
+            'exact', 'TEST', connection=connection, prepared=False
+        )
+        self.assertEqual(field.prep_value_count, 1)