3 Musketeers

RDD, CDD and TDD

Table of Contents

• 🐣 Introduction
• 🎯 Objectives
• 👩‍💻 Just tell me what to do
• 🏃‍♀️ Steps to do
  • RDD and CDD
  • TDD
    • About Jest
• 🛣️ Related course
• Licence

🐣 Introduction

Being a Good Programmer Isn't Just About Writing Code.

It's also writing documentations, comments and unit tests.

🎯 Objectives

1. Write the README.md
2. Write useful comments
3. Complete the Unit Tests

for the library currency

👩‍💻 Just tell me what to do

1. Fork the project via github

2. Clone your forked repository project https://github.com/YOUR_USERNAME/3-musketeers

❯ cd /path/to/workspace
❯ git clone [email protected]:YOUR_USERNAME/3-musketeers.git

2. Do things: README.md, comments and complete unit tests

3. Commit your different modifications:

❯ cd /path/to/workspace/3-musketeers
❯ git add -A && git commit -m "docs(readme): add usage section"
❯ git push origin master

4. Don't forget to commit early, commit often and push often

❯ git push origin master

Note: if you catch an error about authentication, add your ssh to your github profile. If you need some helps on git commands, read git - the simple guide

🏃‍♀️ Steps to do

RDD and CDD

Understand first the library features

❯ cd /path/to/workspace/3-musketeers/currency
❯ npm install # or yarn
❯ node cli.js

# chech what's going on and printed in the console
# ...

1. Complete the currency/README.md file with a complete description of installation, usage... of the library
2. Add block commments (use JSDoc format for instance) for the file currency/index.js only

TDD

1. Run unit tests with npm test

❯ npm test # or yarn test

# chech what's going on and printed in the console
# ...

2. Complete the unit tests (with Jest as testing framework) file currency/index.test.js to cover at least 80%

About Jest

• Getting started with Jest
• Jest uses matchers to let you test values in different ways.
• When you're writing tests, you often need to check that values meet certain conditions. expect gives you access to a number of matchers that let you validate different things.

🛣️ Related course

• Course 6 - 3 Musketeers: RDD, CDD and TDD

Licence

Uncopyrighted