Yet another SQL-testing framework for BigQuery provided by pytest plugin
Pytest plugin for Bigquery SQL
pytest-sql-bigquery is pytest-plugin which provides a sql-unitest-framework for BigQuery. This plugin adopts an end-to-end approch that runnning SQL test on SQL engines.
Yet anthoer approch to tst SQL code
See following SQL codes:
with dataset as ( select 1 union all select 2 ) , __check_sample as ( select 'test' as label, count(1) as actual, 2 as expected from dataset ) select * from dataset
This code is minimal example including test case.
__check_sample is a test case which makes sure the
dataset view has just 2 record.
Our idea is very simple: "Verify SQL code by SQL-self."
This plugin generate SQL test codes from SQL and executed them on SQL-engine such as BigQuery.
The advantages of this approch are
- SQL codes owns specification itself
- Provide portability of logic and its test codes.
- Free to hard-mocking database system
Python >= 3.7
google-cloud-bigquery (For BigQuery integration)
BigQuery (Google Cloud Project)
pip install pytest-bigquery-sql
Then, set up
confidist.py for pytest settings.
import pytest from pytest_sql_bigquery.integrations.pytest import SQLReaderForChecking class ChainPytestFile(pytest.File): def __init__(self, path, parent, chains, **kwargs): super().__init__(path, parent, **kwargs) self.chains = chains def collect(self): for interpreter in self.chains: yield from interpreter.collect() def pytest_collect_file(parent, path): if path.ext == ".sql": return ChainPytestFile( path, parent, [ SQLReaderForChecking(path, parent), ])
Run test for
pytest run -vv examples/sql
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