[1.11.x] Fixed #28230 -- Allowed DjangoJsonEncoder to serialize CallableBool.

1 files changed, 5 insertions, 0 deletions

diff --git a/tests/serializers/test_json.py b/tests/serializers/test_json.py
index b191ce6644..391523ae33 100644
--- a/tests/serializers/test_json.py
+++ b/tests/serializers/test_json.py
@@ -12,6 +12,7 @@ from django.core.serializers.json import DjangoJSONEncoder
 from django.db import models
 from django.test import SimpleTestCase, TestCase, TransactionTestCase
 from django.test.utils import isolate_apps
+from django.utils.deprecation import CallableFalse, CallableTrue
 from django.utils.translation import override, ugettext_lazy
 
 from .models import Score
@@ -315,3 +316,7 @@ class DjangoJSONEncoderTests(SimpleTestCase):
             json.dumps({'duration': duration}, cls=DjangoJSONEncoder),
             '{"duration": "P0DT00H00M00S"}'
         )
+
+    def test_callable_bool(self):
+        self.assertEqual(json.dumps(CallableTrue, cls=DjangoJSONEncoder), 'true')
+        self.assertEqual(json.dumps(CallableFalse, cls=DjangoJSONEncoder), 'false')