Test

A test action is the fourth Lakehouse Plumber action kind, alongside load, transform, and write. It’s a unit test for your data: a standalone assertion — uniqueness, a row count, referential integrity — that runs inside the pipeline on every update and reports pass or fail.

• Write a data test with a test action — declare a test action and let LHP generate the assertion.

• Report test results to an external system — forward every result to a Delta audit table, Azure DevOps Test Plans, or your own endpoint.

Note

A test action is different from a data_quality transform: the transform gates rows inside a flow; a test action asserts a property about a table and reports the outcome.