import { describe, it, expect } from "@jest/globals"
import { last } from "./last.js"

describe("last", () => {
  it("returns the last element", () => {
    expect(last([1, 2])).toEqual(2)
  })

  describe("when the array has a length of 0", () => {
    it("returns null", () => {
      expect(last([])).toEqual(null)
    })
  })
})