Lesson 12 - Add github actions

.github/workflows/main.yml

@@ -0,0 +1,20 @@
+name: Check the source code
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+jobs:
+  test:
+    name: Unit tests
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install packages
+        run: yarn
+      - name: Test
+        run: yarn ci:jest
+      - name: Lint
+        run: yarn ci:lint-js

package.json

@@ -21,6 +21,8 @@
     "start": "react-scripts start",
     "build": "react-scripts build",
     "test": "jest --watch",
+    "ci:jest": "jest --ci",
+    "ci:lint-js": "eslint --ext .js,.jsx ./",
     "eject": "react-scripts eject",
     "lint": "eslint './**/*.{js,jsx}' --fix",
     "prepare": "husky install"

src/setupTests.js

@@ -2,4 +2,5 @@
 // allows you to do things like:
 // expect(element).toHaveTextContent(/react/i)
 // learn more: https://github.com/testing-library/jest-dom
+// eslint-disable-next-line import/no-extraneous-dependencies
 import "@testing-library/jest-dom";