Added test to confirm assertNumQueries

This was confirmed to be a valid test in e7575e8 when
it was a known issue.

Author: tim-schilling

docs/changes.rst

@@ -14,6 +14,7 @@ Pending
 * Dropped support for the Python 3.9, it has reached its end of life date.
 * Toggle tracking the toolbar's queries when using
   ``debug_toolbar.store.DatabaseStore`` with ``SKIP_TOOLBAR_QUERIES``.
+* Added test to confirm Django's ``TestCase.assertNumQueries`` works.
 
 6.1.0 (2025-10-30)
 ------------------

tests/panels/test_sql.py

@@ -102,6 +102,17 @@ def test_recording(self):
         # ensure the stacktrace is populated
         self.assertTrue(len(query["stacktrace"]) > 0)
 
+    def test_assert_num_queries_works(self):
+        """
+        Confirm Django's assertNumQueries and CaptureQueriesContext works
+
+        See  https://github.com/django-commons/django-debug-toolbar/issues/1791
+        """
+        self.assertEqual(len(self.panel._queries), 0)
+        with self.assertNumQueries(1):
+            sql_call()
+        self.assertEqual(len(self.panel._queries), 1)
+
     async def test_recording_async(self):
         self.assertEqual(len(self.panel._queries), 0)