From 65113401f1f6786f8a89dfcb7d0347924b317e7b Mon Sep 17 00:00:00 2001
From: Sarah Boyce <42296566+sarahboyce@users.noreply.github.com>
Date: Wed, 12 Feb 2025 17:08:03 +0100
Subject: [5.1.x] Fixed #36182 -- Returned "?" if all parameters are removed in
 querystring template tag.

Thank you to David Feeley for the report and Natalia Bidart for the review.

Backport of 05002c153c5018e4429a326a6699c7c45e5ea957 from main.
---
 tests/template_tests/syntax_tests/test_querystring.py | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'tests/template_tests/syntax_tests/test_querystring.py')

diff --git a/tests/template_tests/syntax_tests/test_querystring.py b/tests/template_tests/syntax_tests/test_querystring.py
index 3f1cf3d281..099be96f9e 100644
--- a/tests/template_tests/syntax_tests/test_querystring.py
+++ b/tests/template_tests/syntax_tests/test_querystring.py
@@ -17,6 +17,15 @@ class QueryStringTagTests(SimpleTestCase):
         output = template.render(context)
         self.assertEqual(output, "")
 
+    @setup({"test_querystring_remove_all_params": "{% querystring a=None %}"})
+    def test_querystring_remove_all_params(self):
+        non_empty_context = RequestContext(self.request_factory.get("/?a=b"))
+        empty_context = RequestContext(self.request_factory.get("/"))
+        template = self.engine.get_template("test_querystring_remove_all_params")
+        for context, expected in [(non_empty_context, "?"), (empty_context, "")]:
+            with self.subTest(expected=expected):
+                self.assertEqual(template.render(context), expected)
+
     @setup({"querystring_non_empty": "{% querystring %}"})
     def test_querystring_non_empty(self):
         request = self.request_factory.get("/", {"a": "b"})
-- 
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