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Fixtures Pattern

Create and manage test data with factory functions, builder patterns, database seeding, Playwright fixtures, and scenario composition.

What's Included#

  • Factory functions with faker.js for generating realistic test objects with overrides
  • Builder pattern for complex objects with fluent chaining API
  • Database fixtures for seeding test data with Prisma and cleanup helpers
  • Static fixture files (JSON) and fixture index for shared test data
  • Playwright test fixtures for page objects, test users, and authenticated sessions
  • Scenario composition combining multiple fixtures for complex test setups

Usage#

Via CLI#

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Via AI Assistant#

Ask your AI assistant:

  • "Use the fixtures pattern from Bootspring"
  • "Apply the Bootspring fixtures pattern to my project"

Key Considerations#

  • Use faker.js for realistic test data that catches edge cases in formatting
  • Allow overrides on factory functions so tests can customize specific fields
  • Clean database state between tests in beforeEach hooks to prevent pollution
  • Name fixtures descriptively to clearly communicate the scenario they represent
  • Compose complex scenarios from simple, reusable fixture building blocks

Related Patterns#