coding-train

Unit Testing & Circle CI

Circle CI

Automate development process with continuous integration on cloud or infrastructure.

Unit Testing

make a test code for each unit of a project.

Unit Testing Tools for Javascript

• Jest
• Mocha.js

Unit Testing Scenario for Javascript

1. create a Javascript project
   1. package.json
   2. source code (something like sketch.js)
   3. test code
   4. push it to remote (ex. GitHub)
2. Circle CI cloud
   1. When you commit & pull,
   2. Circle CI pull a project from GitHub
   3. it runs your tests
   4. it notice the result to you (or GitHub)

make node project and create source/test code.

see sum.js and sum.test.js.

// sum.js
function sum(a, b) {
    return a + b;
}

module.exports = sum;

// sum.test.js

const sum = require('./sum');

test('adds 1 + 2 to equal 3', () => {
    expect(sum(1, 2)).toBe(3);
});

Circle CI setting

1. Create a forder named .circleci in the root directory.
2. add a file config.yml in .circleci directory
3. write config.yml and push changes to GitHub.

• Example config.yml ```yml version: 2.1 orbs: node: circleci/node@3.0.0 workflows: node-tests: jobs:
  • node/test ```

This is my setting.

version: 2.1
orbs:
  node: circleci/node@3.0.0
jobs:
  build-and-test:
    executor:
      name: node/default
    working_directory: ~/coding-train/circle-ci-tutorial
    steps:
      - checkout:
          path: ~/coding-train
      - run: npm install
      - run: npm test
workflows:
  build-and-test:
    jobs:
      - build-and-test