Add code testing

.github/workflows/test.yml

@@ -0,0 +1,30 @@
+# This workflow will do a clean install of node dependencies, build the source code and run tests across different versions of node
+# For more information see: https://help.github.com/actions/language-and-framework-guides/using-nodejs-with-github-actions
+
+name: Node.js CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [10.x, 12.x, 14.x, 15.x]
+        # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v2
+      with:
+        node-version: ${{ matrix.node-version }}
+    - run: npm ci
+    - run: npm run build --if-present
+    - run: npm test

package.json

@@ -5,13 +5,15 @@
   "main": "dist/bundle.js",
   "scripts": {
     "build": "rollup -c",
-    "prepare": "husky install"
+    "prepare": "husky install",
+    "test": "jest"
   },
   "keywords": [],
   "author": "Romein van Buren <romein@vburen.eu>",
   "license": "MIT",
   "devDependencies": {
     "husky": "^6.0.0",
+    "jest": "^26.6.3",
     "rollup": "^2.49.0",
     "rollup-plugin-clear": "^2.0.7",
     "rollup-plugin-terser": "^7.0.2"

src/bundle.test.js

@@ -0,0 +1,25 @@
+const alphabets = require("../dist/bundle.js");
+
+const latin = [
+  "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"
+];
+
+const greek = [
+  "α", "β", "γ", "δ", "ε", "ζ", "η", "θ", "ι", "κ", "λ", "μ", "ν", "ξ", "ο", "π", "ρ", "σ", "τ", "υ", "φ", "χ", "ψ", "ω"
+];
+
+const greekPolytonic = [
+  "α", "β", "γ", "δ", "ε", "ζ", "η", "θ", "ι", "κ", "λ", "μ", "ν", "ξ", "ο", "π", "ρ", "σ", "τ", "υ", "φ", "χ", "ψ", "ω"
+];
+
+test('alphabets.latin should return Latin alphabet', () => {
+  expect(alphabets.latin).toStrictEqual(latin);
+});
+
+test('alphabets.greek should return Greek alphabet', () => {
+  expect(alphabets.greek).toStrictEqual(greek);
+});
+
+test('alphabets.greekPolytonic should return Greek (Polytonic) alphabet', () => {
+  expect(alphabets.greekPolytonic).toStrictEqual(greekPolytonic);
+});

src/main.js

@@ -4,14 +4,14 @@ export const latin = [
 
 export const greek = [
   "α", "β", "γ", "δ", "ε", "ζ", "η", "θ", "ι", "κ", "λ", "μ", "ν", "ξ", "ο", "π", "ρ", "σ", "τ", "υ", "φ", "χ", "ψ", "ω"
-]
+];
 
 export const greekPolytonic = [
   "α", "β", "γ", "δ", "ε", "ζ", "η", "θ", "ι", "κ", "λ", "μ", "ν", "ξ", "ο", "π", "ρ", "σ", "τ", "υ", "φ", "χ", "ψ", "ω"
-]
+];
 
 export default [
   latin,
   greek,
   greekPolytonic,
-];
+];