def test_visit_select_predicate_should_add_logical_filter(
self, mock, mock_lfilter):
converter = StatementToPlanConvertor()
select_predicate = MagicMock()
converter._visit_select_predicate(select_predicate)
mock_lfilter.assert_called_with(select_predicate)
mock.assert_called_with(select_predicate, converter._column_map)
mock_lfilter.return_value.append_child.assert_called()
self.assertEqual(mock_lfilter.return_value, converter._plan)
def test_visit_select_should_not_call_visits_for_null_values(self):
converter = StatementToPlanConvertor()
converter.visit_table_ref = MagicMock()
converter._visit_projection = MagicMock()
converter._visit_select_predicate = MagicMock()
statement = SelectStatement()
converter.visit_select(statement)
converter.visit_table_ref.assert_not_called()
converter._visit_projection.assert_not_called()
converter._visit_select_predicate.assert_not_called()
def test_visit_select_should_call_appropriate_visit_methods(self):
converter = StatementToPlanConvertor()
converter.visit_table_ref = MagicMock()
converter._visit_projection = MagicMock()
converter._visit_select_predicate = MagicMock()
statement = MagicMock()
converter.visit_select(statement)
converter.visit_table_ref.assert_called_with(statement.from_table)
converter._visit_projection.assert_called_with(statement.target_list)
converter._visit_select_predicate.assert_called_with(
statement.where_clause)