Unit Tests¶

Status: ⏳ PENDING

The inverse of this chapter's rules — practices to recognize and avoid. Each will get a junior-level definition, a real example of the harm it causes, and the clean alternative.

Anti-Patterns to Cover¶

• Testing implementation details, not behaviour
• Multiple assertions testing different concerns in one test
• Slow tests (hit network/disk in the unit suite)
• Flaky tests left in CI
• Tests with no observable failure mode
• Setup methods longer than the test itself

See the chapter README for the positive rules.