fix(presto/trino): Ensure get_table_names only returns real tables (a…

…pache#21794)

tests/integration_tests/db_engine_specs/presto_tests.py

@@ -79,6 +79,27 @@ def test_get_view_names_without_schema(self):
         )
         assert result == {"a", "d"}
 
+    def test_get_view_names_without_schema(self):
+        database = mock.MagicMock()
+        mock_execute = mock.MagicMock()
+        database.get_sqla_engine.return_value.raw_connection.return_value.cursor.return_value.execute = (
+            mock_execute
+        )
+        database.get_sqla_engine.return_value.raw_connection.return_value.cursor.return_value.fetchall = mock.MagicMock(
+            return_value=[["a", "b,", "c"], ["d", "e"]]
+        )
+        result = PrestoEngineSpec.get_view_names(database, mock.Mock(), None)
+        mock_execute.assert_called_once_with(
+            dedent(
+                """
+                SELECT table_name FROM information_schema.tables
+                WHERE table_type = 'VIEW'
+                """
+            ).strip(),
+            {},
+        )
+        assert result == ["a", "d"]
+
     def verify_presto_column(self, column, expected_results):
         inspector = mock.Mock()
         inspector.engine.dialect.identifier_preparer.quote_identifier = mock.Mock()