Principles

• •Test behavior, not implementation details
• •Prefer integration tests over unit tests (Testing Trophy)
• •Arrange-Act-Assert (AAA) pattern in every test
• •Tests must be independent — no shared mutable state
• •Keep tests small and focused — one behavior per test
• •Name tests to describe the behavior being verified
• •Optimize for confidence, not coverage percentage
• •Don't chase 100% coverage — test what matters

Rules

See rules/ for detailed patterns.