Fixed #32114 -- Fixed parallel test crash on non-picklable objects in subtests.

1 files changed, 9 insertions, 1 deletions

diff --git a/tests/test_utils/test_testcase.py b/tests/test_utils/test_testcase.py
index eb6ca80036..0f41f29a23 100644
--- a/tests/test_utils/test_testcase.py
+++ b/tests/test_utils/test_testcase.py
@@ -1,12 +1,20 @@
+import pickle
 from functools import wraps
 
 from django.db import IntegrityError, connections, transaction
 from django.test import TestCase, skipUnlessDBFeature
-from django.test.testcases import DatabaseOperationForbidden, TestData
+from django.test.testcases import DatabaseOperationForbidden, SimpleTestCase, TestData
 
 from .models import Car, Person, PossessedCar
 
 
+class TestSimpleTestCase(SimpleTestCase):
+    def test_is_picklable_with_non_picklable_properties(self):
+        """ParallelTestSuite requires that all TestCases are picklable."""
+        self.non_picklable = lambda: 0
+        self.assertEqual(self, pickle.loads(pickle.dumps(self)))
+
+
 class TestTestCase(TestCase):
     @skipUnlessDBFeature("can_defer_constraint_checks")
     @skipUnlessDBFeature("supports_foreign_keys")