My notes on why we should write unit tests

10 Reasons to Write Unit Tests

• 🐞 Tests Reduce Bugs in New Features.
• 🐛 Tests Reduce Bugs in Existing Features.
• 📚 Tests Are Good Documentation. A concise code example is better than many paragraphs of documentation.
• 💰 Tests Reduce the Cost of Change
• 🎨 Tests Improve Design
• 🔧 Tests Allow Refactoring
• 🗜 Tests Constrain Features
• 🛡 Tests Defend Against Other Programmers
• 🐌 Testing Forces You to Slow Down and Think
• 🧘 Tests Reduce Fear: One of the biggest fears that programmers encounter is making a change to a piece of code and not knowing what is going to break