superset/tests/unit_tests/db_engine_specs/test_teradata.py

44 lines
1.8 KiB
Python

# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
# pylint: disable=unused-argument, import-outside-toplevel, protected-access
import pytest
@pytest.mark.parametrize(
"limit,original,expected",
[
(100, "SEL TOP 1000 * FROM My_table", "SEL TOP 100 * FROM My_table"),
(100, "SEL TOP 1000 * FROM My_table;", "SEL TOP 100 * FROM My_table"),
(10000, "SEL TOP 1000 * FROM My_table;", "SEL TOP 1000 * FROM My_table"),
(1000, "SEL TOP 1000 * FROM My_table;", "SEL TOP 1000 * FROM My_table"),
(100, "SELECT TOP 1000 * FROM My_table", "SELECT TOP 100 * FROM My_table"),
(100, "SEL SAMPLE 1000 * FROM My_table", "SEL SAMPLE 100 * FROM My_table"),
(10000, "SEL SAMPLE 1000 * FROM My_table", "SEL SAMPLE 1000 * FROM My_table"),
],
)
def test_apply_top_to_sql_limit(
limit: int,
original: str,
expected: str,
) -> None:
"""
Ensure limits are applied to the query correctly
"""
from superset.db_engine_specs.teradata import TeradataEngineSpec
assert TeradataEngineSpec.apply_top_to_sql(original, limit) == expected