Method test_dialect_aware_diff

tests/test_diff.py:295–308

(self)

        )

    def test_dialect_aware_diff(self):
        from sqlglot.generator import logger

        with self.assertLogs(logger) as cm:
            # We want to assert there are no warnings, but the 'assertLogs' method does not support that.
            # Therefore, we are adding a dummy warning, and then we will assert it is the only warning.
            logger.warning("Dummy warning")

            expression = parse_one("SELECT foo FROM bar FOR UPDATE", dialect="oracle")
            self._validate_delta_only(
                diff_delta_only(expression, expression.copy(), dialect="oracle"), []
            )

        self.assertEqual(["WARNING:sqlglot:Dummy warning"], cm.output)

    def test_non_expression_leaf_delta(self):
        expr_src = parse_one("SELECT a UNION SELECT b")