---

name: test-data-strategy description: Managing test data and fixtures

Test Data Strategy

Principles

• Isolated test data
• Reproducible
• Minimal and focused
• No production data

Approaches

Fixtures

Pre-defined test data loaded before tests.

Copyfixtures/
  users.json
  orders.json

Factories

Generate test data programmatically.

CopycreateUser({ name: "Test" })

Builders

Fluent interface for complex objects.

Copynew UserBuilder()
  .withName("Test")
  .build()

Best Practices

• Reset data between tests
• Use realistic but fake data
• Don't share mutable data
• Document data requirements

Sensitive Data

• Never use real PII
• Use faker libraries
• Mask in logs