it-app-e2e-fixture-dev

To create reusable Playwright fixtures for E2E test preconditions, implement base.ts and test-data.ts patterns that map spec-referenced keys to authenticated or stateful test setup. This standardizes login, navigation, and data preparation across specs.

A precondition catalog in Playwright E2E testing is a _preconditions.yaml file mapping precondition keys to reusable fixtures. It governes approved test states so specs reference consistent UI and data setups without re-creating steps.

To add a new login state fixture, implement the Playwright fixture code using base.ts patterns, then define a new entry in the _preconditions.yaml catalog to wire the spec-referenced key to its fixture setup.

The best way to refactor E2E test fixtures and prevent circular dependencies is applying fixture layering with dependency chains. This approach supports robust refactoring while avoiding overly deep setups that hurt test maintainability.

Playwright E2E tests fail when recreating setup steps because inconsistent login, navigation, and data preparation cause state mismatches. Standardizing fixtures and registering preconditions ensures tests start from consistent UI states.

Yes, you can use fixture layering to handle complex stateful page setups in Playwright. It supports dependency chains for stateful pages while enforcing locator, naming, and dependency-chain rules to prevent overly deep setups.