Testing Best Practices

Test Structure (AAA Pattern)

• Arrange: Set up test data and conditions
• Act: Execute the code under test
• Assert: Verify the expected outcome
• Use descriptive test names: "should X when Y"

Unit Tests

• Test one behavior per test
• Mock external dependencies
• Test edge cases and error paths
• Keep tests fast (< 100ms each)
• Use factories for test data
• Aim for 80%+ coverage