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This skill automates the creation and maintenance of unit test fixtures for BigQuery SQL queries, ensuring transformation logic is validated on small, synthetic datasets rather than production data. It provides standardized templates for input fixtures, expected results, and query parameters while enforcing critical safety checks to prevent accidental production queries. By integrating with the bigquery-etl ecosystem, it helps developers implement robust testing strategies for complex scenarios like Glean events, multi-source unions, and intricate aggregations, ultimately strengthening the reliability of data pipelines within CI/CD workflows.
