Mocha, chai, sinon, superagent/axios. Requerimos pruebas unitarias y funcionales/e2e pero cobertura del 100% no es necesaria ya que tampoco queremos que te consuma mucho tiempo, más que nada es para ver tus conocimientos de testing.

Express y passport.js (autenticación no es requerida pero es un plus).

Sequelize con Postgresql.

Docker setup.

We run a physical store which sells (only) 3 products:

PANTS | Pants | $5.00

TSHIRT | T-Shirt | $20.00

HAT | Hat | $7.50

Various departments have insisted on the following discounts:

The marketing department believes in 2-for-1 promotions (buy two of the same product, get one free), and would like for there to be a 2-for-1 special on PANTS items.

The CFO insists that the best way to increase sales is with discounts on bulk purchases (buying x or more of a product, the price of that product is reduced), and demands that if you buy 3 or more TSHIRT items, the price per unit should be $19.00.

The checkout process allows for items to be scanned in any order, and should return the total amount to be paid.

Items: PANTS, TSHIRT, HAT

Total: $32.50

Items: PANTS, TSHIRT, PANTS

Total: $25.00

Items: TSHIRT, TSHIRT, TSHIRT, PANTS, TSHIRT

Total: $81.00

Items: PANTS, TSHIRT, PANTS, PANTS, HAT, TSHIRT, TSHIRT

Total: $74.50

Implement a basic API for our store.