Refs #28948 -- Removed superfluous messages from cookie through bisect.

1 files changed, 20 insertions, 0 deletions

diff --git a/tests/messages_tests/test_cookie.py b/tests/messages_tests/test_cookie.py
index 0fd2ed34d8..344df96886 100644
--- a/tests/messages_tests/test_cookie.py
+++ b/tests/messages_tests/test_cookie.py
@@ -1,5 +1,6 @@
 import json
 import random
+from unittest import TestCase
 
 from django.conf import settings
 from django.contrib.messages import constants
@@ -8,6 +9,8 @@ from django.contrib.messages.storage.cookie import (
     CookieStorage,
     MessageDecoder,
     MessageEncoder,
+    bisect_keep_left,
+    bisect_keep_right,
 )
 from django.test import SimpleTestCase, override_settings
 from django.utils.crypto import get_random_string
@@ -204,3 +207,20 @@ class CookieTests(BaseTests, SimpleTestCase):
                     self.encode_decode("message", extra_tags=extra_tags).extra_tags,
                     extra_tags,
                 )
+
+
+class BisectTests(TestCase):
+    def test_bisect_keep_left(self):
+        self.assertEqual(bisect_keep_left([1, 1, 1], fn=lambda arr: sum(arr) != 2), 2)
+        self.assertEqual(bisect_keep_left([1, 1, 1], fn=lambda arr: sum(arr) != 0), 0)
+        self.assertEqual(bisect_keep_left([], fn=lambda arr: sum(arr) != 0), 0)
+
+    def test_bisect_keep_right(self):
+        self.assertEqual(bisect_keep_right([1, 1, 1], fn=lambda arr: sum(arr) != 2), 1)
+        self.assertEqual(
+            bisect_keep_right([1, 1, 1, 1], fn=lambda arr: sum(arr) != 2), 2
+        )
+        self.assertEqual(
+            bisect_keep_right([1, 1, 1, 1, 1], fn=lambda arr: sum(arr) != 1), 4
+        )
+        self.assertEqual(bisect_keep_right([], fn=lambda arr: sum(arr) != 0), 0)