Frontend Testing

Start by writing tests that validate acceptance criteria. Then add implementation tests where they provide value.

Core Principle

"The more your tests resemble the way your software is used, the more confidence they can give you." — Kent C. Dodds

This principle guides testing decisions, but isn't the whole picture:

• Acceptance criteria tests verify the system does what users/stakeholders need. These should be stable across refactors.
• Implementation tests verify the pieces are robust — edge cases, error handling, complex logic. These may change when you refactor.

Both have value. The anti-pattern to avoid is tests that only mirror implementation without validating meaningful behavior.

When to Load References

Load reference files based on test type: