liquid/test/ranges.js

Node.js port of the Liquid template engine

const Liquid = require('..')

describe('Range', function () {
  it('can be converted to array', function () {
    expect(new Liquid.Range(0, 1).toArray()).to.deep.equal([0])
    expect(new Liquid.Range(0, 2).toArray()).to.deep.equal([0, 1])
    return expect(new Liquid.Range(1, 2).toArray()).to.deep.equal([1])
  })

  it('has a length', function () {
    expect(new Liquid.Range(0, 1).length).to.equal(1)
    expect(new Liquid.Range(0, 2).length).to.equal(2)
    return expect(new Liquid.Range(1, 2).length).to.equal(1)
  })

  it('has a step', function () {
    expect(new Liquid.Range(0, 4, 2).toArray()).to.deep.equal([0, 2])
    return expect(new Liquid.Range(0, 5, 2).toArray()).to.deep.equal([0, 2, 4])
  })

  it('can have a negative step', function () {
    expect(new Liquid.Range(2, 0).toArray()).to.deep.equal([2, 1])
    return expect(new Liquid.Range(5, 0, -2).toArray()).to.deep.equal([5, 3, 1])
  })

  return describe('.some', () =>
    it('behaves as Array.some()', function () {
      expect(new Liquid.Range(0, 4).some(v => v === 2)).to.equal(true)
      expect(new Liquid.Range(4, 0).some(v => v === 2)).to.equal(true)
      expect(new Liquid.Range(0, 4).some(v => v === 10)).to.equal(false)
      return expect(new Liquid.Range(4, 0).some(v => v === 10)).to.not.be.ok
    })
  )
})