Solution

.github/workflows/test.yml-template

@@ -0,0 +1,23 @@
+name: Test
+
+on:
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [20.x]
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
+    - run: npm install
+    - run: npm test

package.json

@@ -17,7 +17,7 @@
   "license": "GPL-3.0",
   "devDependencies": {
     "@mate-academy/eslint-config": "latest",
-    "@mate-academy/scripts": "^1.8.6",
+    "@mate-academy/scripts": "^1.9.12",
     "eslint": "^8.57.0",
     "eslint-plugin-jest": "^28.6.0",
     "eslint-plugin-node": "^11.1.0",

src/calculateRentalCost.js

@@ -4,7 +4,21 @@
  * @return {number}
  */
 function calculateRentalCost(days) {
-  // write code here
+  const PRICE_PER_DAY = 40;
+  const LONG_TERM = 7;
+  const LONG_TERM_DISCOUNT = 50;
+  const MEDIUM_TERM = 3;
+  const MEDIUM_TERM_DISCOUNT = 20;
+
+  let result = PRICE_PER_DAY * days;
+
+  if (days >= LONG_TERM) {
+    result -= LONG_TERM_DISCOUNT;
+  } else if (days >= MEDIUM_TERM) {
+    result -= MEDIUM_TERM_DISCOUNT;
+  }
+
+  return result;
 }
 
 module.exports = calculateRentalCost;