test.js

const assert = require('assert')
const { part1, part2 } = require('./script')
const numbers =
`1721
979
366
299
675
1456`

const badData = 
`120
500
600
800`

describe('Day 1: Report Repair', () => {
    describe('Part One', () => {
        it('should return the product of 2 numbers which sum to 2020', () => {
            assert.strictEqual(part1(numbers), 514579)
        })
        it('should return null if no correct answer is found', () => {
            assert.strictEqual(part1(badData), null)
        })
    })

    describe('Part Two', () => {
        it('should return the product of 3 numbers which sum to 2020', () => {
            assert.strictEqual(part2(numbers), 241861950)
        })
        it('should return null if no correct answer is found', () => {
            assert.strictEqual(part2(badData), null)
        })
    })
})