2 files changed, 14 insertions, 17 deletions
diff --git a/tests/migrations/test_questioner.py b/tests/migrations/test_questioner.py
index 45536410bb..e17dd04ab6 100644
--- a/tests/migrations/test_questioner.py
+++ b/tests/migrations/test_questioner.py
@@ -1,6 +1,11 @@
-from django.db.migrations.questioner import MigrationQuestioner
+import datetime
+from unittest import mock
+
+from django.db.migrations.questioner import (
+    InteractiveMigrationQuestioner, MigrationQuestioner,
+)
 from django.test import SimpleTestCase
-from django.test.utils import override_settings
+from django.test.utils import captured_stdout, override_settings
 
 
 class QuestionerTests(SimpleTestCase):
@@ -11,3 +16,10 @@ class QuestionerTests(SimpleTestCase):
     def test_ask_initial_with_disabled_migrations(self):
         questioner = MigrationQuestioner()
         self.assertIs(False, questioner.ask_initial('migrations'))
+
+    @mock.patch('builtins.input', return_value='datetime.timedelta(days=1)')
+    def test_timedelta_default(self, mock):
+        questioner = InteractiveMigrationQuestioner()
+        with captured_stdout():
+            value = questioner._ask_default()
+        self.assertEqual(value, datetime.timedelta(days=1))
diff --git a/tests/migrations/test_writer.py b/tests/migrations/test_writer.py
index 946306c325..c656f95666 100644
--- a/tests/migrations/test_writer.py
+++ b/tests/migrations/test_writer.py
@@ -19,7 +19,6 @@ from django.db.migrations.writer import (
     MigrationWriter, OperationWriter, SettingsReference,
 )
 from django.test import SimpleTestCase
-from django.utils import datetime_safe
 from django.utils.deconstruct import deconstructible
 from django.utils.functional import SimpleLazyObject
 from django.utils.timezone import get_default_timezone, get_fixed_timezone, utc
@@ -364,20 +363,6 @@ class WriterTests(SimpleTestCase):
             )
         )
 
-    def test_serialize_datetime_safe(self):
-        self.assertSerializedResultEqual(
-            datetime_safe.date(2014, 3, 31),
-            ("datetime.date(2014, 3, 31)", {'import datetime'})
-        )
-        self.assertSerializedResultEqual(
-            datetime_safe.time(10, 25),
-            ("datetime.time(10, 25)", {'import datetime'})
-        )
-        self.assertSerializedResultEqual(
-            datetime_safe.datetime(2014, 3, 31, 16, 4, 31),
-            ("datetime.datetime(2014, 3, 31, 16, 4, 31)", {'import datetime'})
-        )
-
     def test_serialize_fields(self):
         self.assertSerializedFieldEqual(models.CharField(max_length=255))
         self.assertSerializedResultEqual(