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superset2/tests/unit_tests/db_engine_specs/test_timescaledb.py
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# 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.
from superset.db_engine_specs.postgres import PostgresBaseEngineSpec
from superset.db_engine_specs.timescaledb import TimescaleDBEngineSpec
def test_timescaledb_inherits_from_postgres_base() -> None:
assert issubclass(TimescaleDBEngineSpec, PostgresBaseEngineSpec)
def test_timescaledb_inherits_extended_aggregations() -> None:
"""
TimescaleDB is a Postgres extension, not a forked query engine -- it runs
unmodified Postgres aggregate execution -- so it inherits
`_extended_aggregations` from `PostgresBaseEngineSpec` unmodified -- see
the comment above that dict.
"""
assert TimescaleDBEngineSpec.get_extended_aggregation_func("MEDIAN") is not None
assert (
TimescaleDBEngineSpec.get_extended_aggregation_func("STDDEV_SAMP") is not None
)
assert TimescaleDBEngineSpec.get_extended_aggregation_func("VAR_SAMP") is not None