import * as RandUtils from '../src/random'

describe('Random Utils', () => {
  it('random', () => {
    let result = RandUtils.random()

    expect(result).to.lte(1)
    expect(result).to.gte(0)

    result = RandUtils.random(100)

    expect(result).to.lte(100)
    expect(result).to.gte(0)

    result = RandUtils.random(90, 100)

    expect(result).to.lte(100)
    expect(result).to.gte(90)
  })

  it('random int', () => {
    let result = RandUtils.randomInt(10)

    expect(result).to.lte(10)
    expect(result).to.gte(0)
    expect(result | 0).to.be.eq(result)
  })

  it('random bool', () => {
    let result = RandUtils.randomBool()
    expect(typeof result).to.be.eq('boolean')
  })

  it('sampling an array', () => {
    let arr = [1, 2, 3, 4, 5]
    let sample = RandUtils.sample(arr)
    expect(typeof sample).to.be.eq('number')
    expect(arr.indexOf(sample)).to.gte(0)
  })
})