In dbt, what file type would you find defined tests for data checks?

In dbt, tests for data checks are defined in the Tests Directory. This directory serves as the organized space where developers can create and manage various test cases that ensure data integrity and correctness. Tests in dbt can be used to validate that data meets certain expectations, such as checking for nulls, ensuring uniqueness, or verifying relationships between datasets.

Having a dedicated Tests Directory allows for clear structuring and easy access to these validation rules, aligning them closely with the models being tested. This organization is essential for maintaining high quality in data pipelines, as it facilitates collaboration among team members who may need to quickly understand or modify tests as business logic evolves.

Other options do not serve the purpose of housing defined tests. Source and Catalog Artifacts pertain to the documentation and metadata related to data sources and outputs but do not involve the actual logic of data checks. Model Files, where the transformations and business logic are defined, do not specifically contain the test definitions themselves, as these are separate to promote clarity and maintainability in data projects.