import { Id, Product, productPriceFor } from "../product";
import uuid from "react-native-uuid"

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

  it(`Length product gives correct price for a shorter length`, () => {
    const standard : Product = {
      id: uuid.v4().valueOf() as Id,
      dimensions: {
        l: 5,
        u: "ft",
      },
      type: "lumber",
      pricePerUnit: 10,
    };
    const comparison = productPriceFor(standard, { l: 2, u: "feet" });
    expect(comparison).toEqual(4);
  });

  it(`Length product gives correct price for a longer length`, () => {
    const standard : Product = {
      id: uuid.v4().valueOf() as Id,
      dimensions: {
        l: 5,
        u: "ft",
      },
      type: "lumber",
      pricePerUnit: 10,
    };
    const comparison = productPriceFor(standard, { l: 10, u: "feet" });
    expect(comparison).toEqual(20);
  });

  it(`Length product gives correct price if different units`, () => {
    const standard : Product = {
      id: uuid.v4().valueOf() as Id,
      dimensions: {
        l: 12,
        u: "in",
      },
      type: "lumber",
      pricePerUnit: 1,
    };
    const comparison = productPriceFor(standard, { l: 2, u: "feet" });
    expect(comparison).toBeCloseTo(2, 1);
  });
});