🧪🧪 Intro to unit testing and API testing using javascript and nodejs 🧪🧪

Why testing

• Reducing bug in production
• Gain confidence in product
• Can be used as documentation

Type of testing

image credit JavaScript testing best practice

We will know three types of testing

• ✅ Unit testing
• ✅ API testing (kind of integration testing)
• ☑️ End to end testing (e2e)

The testing pyramid

image credit https://www.headspin.io/

What we are using

• Jest as test runner and assertion library.

  • Has both test runner (e.g. mocha) and assertion library (e.g. chai) integrated
  • We Need to familiar with matcher functions

• Supertest for testing node.js HTTP server