Workshop to learn the basics of Mocha into a Node.js environment.
Please install dependencies first.
npm install
To launch the tests.
npm test
To lint sources.
npm run lint
To start program.
npm start
Please verify that after all exercises the tests and the linter should not return errors.
You have a fruit shop, on every 3 same products, you offer the third.
You want to start a business online, so your software should be able to return the details of a basket.
A function getPrices that doesn't take parameter should return an object which describes the prices of your products.
// For example
console.log(getPrices()) // { banana: 1, potato: 2, tomato: 3, cucumber: 4, salad: 5, apple: 6 }Add tests into file test/shop-tools.test.js. that will verify this assertion.
Add the function getPrices into file src/shop-tools.js.
👉 function .eql from Chai should help you.
After finish this exercise, please commit all your files.
git add .
git commit -m "Exercise 1"
A function countArticles that take one parameter (an array) should return the number of the elements in an array.
// For example
const products = [ 'tomato', 'cucumber', 'tomato', 'salad', 'potato', 'cucumber', 'potato', 'potato', 'tomato', 'potato' ];
console.log(countArticles(products)) // 10Add tests into file test/shop-tools.test.js. that will verify this assertion.
Add the function countArticles into file src/shop-tools.js.
After finish this exercise, please commit all your files.
git add .
git commit -m "Exercise 2"
A function countProducts that take one parameter (an array) should return the number of distinct elements in a array.
// For example
const products = [ 'tomato', 'cucumber', 'tomato', 'salad', 'potato', 'cucumber', 'potato', 'potato', 'tomato', 'potato' ];
console.log(countProducts(products)) // 4Add tests into file test/shop-tools.test.js. that will verify this assertion.
Add the function countProducts into file src/shop-tools.js.
After finish this exercise, please commit all your files.
git add .
git commit -m "Exercise 3"
A function removeFreeArticles that take one parameter (an array) should return an array where the business discount will be applied.
// For example
const products = [ 'tomato', 'cucumber', 'tomato', 'salad', 'potato', 'cucumber', 'potato', 'potato', 'tomato', 'potato' ];
console.log(removeFreeArticles(products)) // [ 'tomato', 'cucumber', 'tomato', 'salad', 'potato', 'cucumber', 'potato', 'potato' ]Add tests into file test/shop-tools.test.js. that will verify this assertion.
Add the function removeFreeArticles into file src/shop-tools.js.
After finish this exercise, please commit all your files.
git add .
git commit -m "Exercise 4"
A function calculateBasket that take two parameters (an object and an array) should calculate the price of the basket.
// For example
const prices = { banana: 1, potato: 2, tomato: 3, cucumber: 4, salad: 5, apple: 6 };
const products = [ 'tomato', 'cucumber', 'salad'];
console.log(calculateBasket(products, prices)) // 12Add tests into file test/shop-tools.test.js. that will verify this assertion.
Add the function calculateBasket into file src/shop-tools.js.
After finish this exercise, please commit all your files.
git add .
git commit -m "Exercise 5"
A function summarizeBasket that take two parameters (an object and an array) should build our expected result.
// For example
const prices = { banana: 1, potato: 2, tomato: 3, cucumber: 4, salad: 5, apple: 6 };
const products = [ 'tomato', 'cucumber', 'tomato', 'salad', 'potato', 'cucumber', 'potato', 'potato', 'tomato', 'potato' ];
console.log(summarizeBasket(products, prices)) // { price: 25, countArticles: 10, countProducts: 4 }Add tests into file test/shop-tools.test.js. that will verify this assertion.
Add the function summarizeBasket into file src/shop-tools.js.
After finish this exercise, please commit all your files.
git add .
git commit -m "Exercise 6"