PliWould/lib/__tests__/product-test.ts

import { length } from "enheter";
import { Product } from "../product";

describe("Product tests", () => {

  it(`Length product gives correct price for a shorter length`, () => {
    const standard = new Product(20, length("foot", 4));
    const comparison = standard.priceFor(length("foot", 2));
    expect(comparison).toEqual(10);
  });

  it(`Length product gives correct price for a longer length`, () => {
    const standard = new Product(20, length("foot", 4));
    const comparison = standard.priceFor(length("foot", 8));
    expect(comparison).toEqual(40);
  });

  it(`Length product gives correct price if different units`, () => {
    const standard = new Product(10, length("foot", 1));
    const comparison = standard.priceFor(length("inch", 24));
    expect(comparison).toEqual(20);
  });

});