TDD Overview

Write failing test first.

Fail -> Pass -> Refactor

Unit Testing

Individual functions or units of code

Integration Testing

Testing units of code together

End-to-End Testing

Runs code in simulated environment, e.g. Cypress

Acceptance Testing

Tests that a user or client’s requirements are met

System Testing

Test that works on real devices

Smoke test

Most important tests are run first, then further ones if needed. This is to prevent slowing down the system.

For websites - test every page and every user interaction, and also the components.