Files
superset2/tests/testcontainers/db_engine_specs/test_crate.py
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rusackasandClaude Opus 4.8 80928bdb6c refactor(testcontainers): extract shared pagination-test body
The "paginated query returns correct rows in order" test body was
duplicated verbatim across cockroachdb/crate/db2/mssql/oracle/trino's
testcontainers suites. Factor the shared table-setup/assert logic into
_pagination.py, with an optional post-insert hook for CrateDB's
eventual-consistency REFRESH TABLE step; each call site keeps its own
test function and dialect-specific docstring.

Addresses bito-code-review feedback on #43502.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-08-27 19:52:17 -07:00

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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.
"""
Tests db_engine_specs.crate against a real CrateDB instance, spun up on
demand via testcontainers. Run nightly (see
.github/workflows/nightly-testcontainers.yml), not on every merge.
crate/crate only publishes an amd64 image (no arm64 build), and requires a
host CPU supporting the x86-64-v3 instruction set -- QEMU emulation on
Apple Silicon cannot satisfy that, so this file cannot run locally on an
Apple Silicon machine even with `docker pull --platform linux/amd64`. It
runs natively on GitHub Actions' x86_64 runners.
"""
from collections.abc import Iterator
import pytest
from sqlalchemy import (
Column,
create_engine,
inspect,
Integer,
MetaData,
Table as SATable,
)
from sqlalchemy.engine import Connection, Engine
from superset.db_engine_specs.crate import CrateEngineSpec
from superset.sql.parse import Table
pytest.importorskip("testcontainers.community.cratedb")
from testcontainers.community.cratedb import CrateDBContainer # noqa: E402
from ._pagination import assert_paginated_query_returns_correct_rows_in_order
@pytest.fixture(scope="module")
def engine() -> Iterator[Engine]:
with CrateDBContainer() as container:
yield create_engine(container.get_connection_url())
def _refresh_pilot_pagination(conn: Connection) -> None:
# CrateDB is eventually consistent: a row is not guaranteed visible to
# subsequent selects immediately after insert.
conn.exec_driver_sql("REFRESH TABLE pilot_pagination")
def test_paginated_query_returns_correct_rows_in_order(engine: Engine) -> None:
"""
A plain SQLAlchemy Core LIMIT/OFFSET query, compiled and executed against
a real instance. Mocked tests cannot catch a dialect compiling this
incorrectly (see apache/superset#42899, where Trino emitted OFFSET
before LIMIT) -- only real execution can.
"""
assert_paginated_query_returns_correct_rows_in_order(
engine, after_insert=_refresh_pilot_pagination
)
def test_get_columns_maps_native_types(engine: Engine) -> None:
"""
CrateEngineSpec.get_columns wraps a real SQLAlchemy Inspector; this
exercises that against actual server-reported column metadata rather
than a mocked Inspector.
"""
metadata = MetaData()
SATable(
"pilot_types",
metadata,
Column("id", Integer, primary_key=True),
Column("amount", Integer),
)
metadata.create_all(engine)
inspector = inspect(engine)
columns = CrateEngineSpec.get_columns(inspector, Table("pilot_types"))
by_name = {col["column_name"]: col for col in columns}
assert set(by_name) == {"id", "amount"}
for col in by_name.values():
spec = CrateEngineSpec.get_column_spec(str(col["type"]))
assert spec is not None