Fixed #36271 -- Raised TemplateSyntaxError when using a relative template path with an unknown origin.

1 files changed, 12 insertions, 1 deletions

diff --git a/tests/template_tests/syntax_tests/test_exceptions.py b/tests/template_tests/syntax_tests/test_exceptions.py
index b6d86ac42b..57c4fdb5e6 100644
--- a/tests/template_tests/syntax_tests/test_exceptions.py
+++ b/tests/template_tests/syntax_tests/test_exceptions.py
@@ -1,4 +1,4 @@
-from django.template import TemplateDoesNotExist, TemplateSyntaxError
+from django.template import Template, TemplateDoesNotExist, TemplateSyntaxError
 from django.test import SimpleTestCase
 
 from ..utils import setup
@@ -64,3 +64,14 @@ class ExceptionsTests(SimpleTestCase):
         """
         with self.assertRaises(TemplateSyntaxError):
             self.engine.render_to_string("exception05")
+
+    def test_unknown_origin_relative_path(self):
+        files = ["./nonexistent.html", "../nonexistent.html"]
+        for template_name in files:
+            with self.subTest(template_name=template_name):
+                msg = (
+                    f"The relative path '{template_name}' cannot be evaluated due to "
+                    "an unknown template origin."
+                )
+                with self.assertRaisesMessage(TemplateSyntaxError, msg):
+                    Template(f"{{% extends '{template_name}' %}}")