testing-database-behavior

You can test PostgreSQL Row-Level Security policies for tenant isolation by writing pgTAP tests that use SET ROLE to simulate different user contexts and verify data access boundaries. This Skill designs those tests to prove RLS enforcement dynamically at runtime.

The best way to detect query plan performance regressions in PostgreSQL is by tracking EXPLAIN costs and establishing query plan baselines. This Skill uses RegreSQL to capture and compare execution plans, alerting you to unintended performance shifts.

To verify trigger side-effects and constraint enforcement in a database schema, you design dynamic behavioral tests that execute schema operations and validate the resulting state. This Skill creates pgTAP test cases to confirm triggers and constraints behave as expected.

Yes, pgTAP works for validating dynamic database behavior by executing operations and asserting runtime outcomes. This Skill leverages pgTAP to move beyond static schema analysis, testing actual RLS policy enforcement, trigger logic, and constraint side-effects dynamically.

You need dynamic behavioral testing for your PostgreSQL schema when static analysis is insufficient to guarantee runtime security and logic, particularly when implementing critical features like RLS policies, complex triggers, or strict constraints that require operational proof.