Test-Driven Development // Fun TDD Introduction with JavaScript Functional Testing- Unit Test- Integration Test- End-To-End Test Non-Functional Testing- Performance, Stress Testing- Usability- Security 100% code coverage is a myth- Unit Test : jest - npm install jest --save-dev- End-To-End Test : cypress - npm install cypress -D 나중에 개인적으로 사이드 프로젝트 할 때 함 적용해보기 위한 메모