james-brndwgn

Unit Testing vs. End to End Testing:

Unit/Component:

• Test a single Component, Service, Pipe etc.
• Test a single specific behaviour in a controlled environment
• Mock everything you need to test this functionality
• Use code coverage analysis to make sure everything is covered
• (Usually) Improves code structure and quality
• Test edge cases on the most detailed level
• Know if a change breaks a specific behaviour

james-brndwgn

UI component names

Interactive components

• button
• switch
• toggle
• slider
• handle
• tab

james-brndwgn

Javascript Tricks

Arrays

Easily convert NodeList/HTMLCollection to Array with ES6 spread operator

const arr = [...document.querySelectorAll('div')];

Vue

Unique ID generator for keys. Reuse uid if already exist on object.