Description

• Small Node JS app to calculate price of car insurance products following certain rules as described below
• The app is scalable in the sense that every new product can be added no matter what the other products or rules are (check productRules.js)
• Standard calculations are defined in the Rule class inside rule.js
• If there is a special calculation for a Rule (such as the Special Full Coverage), then a rule provider or custom function can be added inside productRules.js

Commands

• npm run test, should run the test suite and display the coverage report
• npm run after-30-days, should display an output similar to products_after_30_days.txt

Here you have a description of the products.

• All Products have a sellIn value which denotes the number of days we have to sell the product.
• All Products have a price value which denotes how much the product cost.
• At the end of each day our system lowers both values for every product.

Pretty simple, right? Well this is where it gets interesting:

• Once the sell by date has passed, price degrades twice as fast.

• The price of a product is never negative.

• "Full Coverage" actually increases in price the older it gets.

• The price of a product is never more than 50.

• "Mega Coverage", being a legendary product, never has to be sold or decreases in price.

• "Special Full Coverage", like full coverage, increases in price as its sellIn value approaches:

  • price increases by 2 when there are 10 days or less and by 3 when there are 5 days or less but.
  • price drops to 0 when no more days left (and the product is not valid anymore).

• "Super Sale" Products degrade in price twice as fast as normal Products.

• A product can never have its price increase above 50, however "Mega Coverage" is a legendary product and as such its price is 80 and it never alters.