burger/src/__tests__/collection-test.coffee

A lightweight turbolinks friendly JavaScript library

jest
  .autoMockOff()

$ = require('jquery')
Component = require('../component')
Collection = require('../collection')
findChildren = require('../services/find-children')

class Stub extends Component
  @register()

class OtherStub extends Component
  @register()

describe 'Collection', ->
  instance = undefined

  beforeEach ->
    element =
      $("""
        <div>
          <div data-burger="OtherStub" data-name="Mark" data-ref="Burger"></div>
          <div data-burger="Stub" data-name="Gabe">
            <div data-burger="OtherStub" data-name="Gabe" data-ref="Burger"></div>
          </div>
        </div>
      """)

    children = findChildren(element)
    instance = new Collection(children)

  describe '#size', ->

    it 'gives you the length of children', ->
      expect(instance.size()).toEqual(3)

  describe '#first', ->

    it 'returns the first item in the collection', ->
      expect(instance.first().name).toEqual('OtherStub')

  describe '#where', ->

    it 'can find by class name', ->
      expect(instance.size()).toEqual(3)
      filtered = instance.where(OtherStub)
      expect(filtered.size()).toEqual(2)

    it 'can find by data', ->
      expect(instance.size()).toEqual(3)

      filtered = instance.where({ name: 'Gabe'  })
      expect(filtered.size()).toEqual(2)

      filtered = instance.where({ name: 'Mark'  })
      expect(filtered.size()).toEqual(1)

      filtered = instance.where({ name: 'Gabe', ref: 'Burger' })
      expect(filtered.size()).toEqual(1)