Fixed #23514 -- Prevented queries in PostGISOperations init

Thanks Mattia Procopio for the report.

1 files changed, 8 insertions, 0 deletions

diff --git a/tests/backends/tests.py b/tests/backends/tests.py
index 89132f2a31..2ab8f680b5 100644
--- a/tests/backends/tests.py
+++ b/tests/backends/tests.py
@@ -571,6 +571,14 @@ class BackendTestCase(TestCase):
         self.assertTrue(hasattr(connection.ops, 'connection'))
         self.assertEqual(connection, connection.ops.connection)
 
+    def test_database_operations_init(self):
+        """
+        Test that DatabaseOperations initialization doesn't query the database.
+        See #17656.
+        """
+        with self.assertNumQueries(0):
+            connection.ops.__class__(connection)
+
     def test_cached_db_features(self):
         self.assertIn(connection.features.supports_transactions, (True, False))
         self.assertIn(connection.features.supports_stddev, (True, False))