vue/test/unit/specs/compiler/transclude_spec.js

var transclude = require('../../../../src/compiler').transclude
var Vue = require('../../../../src/vue')
var _ = require('../../../../src/util')

if (_.inBrowser) {
  describe('Transclude', function () {

    var el, options
    beforeEach(function () {
      el = document.createElement('div')
      options = _.extend({}, Vue.options)
      spyOn(_, 'warn')
    })

    it('normal', function () {
      var res = transclude(el, options)
      expect(res).toBe(el)
    })

    it('template', function () {
      options.template = '{{hi}}'
      var res = transclude(el, options)
      expect(res).toBe(el)
      expect(res.innerHTML).toBe('{{hi}}')
    })

    it('template invalid', function () {
      options.template = '#non-existent-stuff'
      var res = transclude(el, options)
      expect(res).toBeUndefined()
      expect(hasWarned(_, 'Invalid template option')).toBe(true)
    })

    it('template replace', function () {
      el.className = 'hello'
      options.template = '<div>{{hi}}</div>'
      options.replace = true
      var res = transclude(el, options)
      expect(res).not.toBe(el)
      expect(res.tagName).toBe('DIV')
      expect(res.className).toBe('hello')
      expect(res.innerHTML).toBe('{{hi}}')
    })

    it('template replace -> fragment instance', function () {
      var res
      options.replace = true

      // multiple root
      options.template = '<div></div><div></div>'
      res = transclude(el, options)
      expect(res instanceof DocumentFragment).toBe(true)

      // non-element
      options.template = '{{hi}}'
      res = transclude(el, options)
      expect(res instanceof DocumentFragment).toBe(true)

      // single component: <component>
      options.template = '<component is="{{hi}}"></component>'
      res = transclude(el, options)
      expect(res instanceof DocumentFragment).toBe(true)

      // single component: custom element
      options.template = '<test></test>'
      options.components = { test: {}}
      res = transclude(el, options)
      expect(res instanceof DocumentFragment).toBe(true)

      // single component: v-component
      options.template = '<div v-component="test"></div>'
      res = transclude(el, options)
      expect(res instanceof DocumentFragment).toBe(true)

      // element directive
      options.template = '<el-dir></el-dir>'
      options.elementDirectives = { 'el-dir': {}}
      res = transclude(el, options)
      expect(res instanceof DocumentFragment).toBe(true)

      // v-for
      options.template = '<div v-for="item in list"></div>'
      res = transclude(el, options)
      expect(res instanceof DocumentFragment).toBe(true)
    })

    it('direct fragment instance', function () {
      var frag = document.createDocumentFragment()
      frag.appendChild(el)
      var res = transclude(frag, options)
      expect(res).toBe(frag)
      expect(res.childNodes.length).toBe(3)
      expect(res.childNodes[0].nodeType).toBe(3)
      expect(res.childNodes[1]).toBe(el)
      expect(res.childNodes[2].nodeType).toBe(3)
    })

    it('template element', function () {
      var tpl = document.createElement('template')
      tpl.innerHTML = '<div>123</div>'
      var res = transclude(tpl, options)
      expect(res instanceof DocumentFragment).toBe(true)
      expect(res.childNodes.length).toBe(3)
      expect(res.childNodes[0].nodeType).toBe(3)
      expect(res.childNodes[1].textContent).toBe('123')
      expect(res.childNodes[2].nodeType).toBe(3)
    })

    it('replacer attr should overwrite container attr of same name, except class should be merged', function () {
      el.setAttribute('class', 'test')
      el.setAttribute('title', 'parent')
      options.template = '<div class="other" title="child"></div>'
      options.replace = true
      options._asComponent = true
      var res = transclude(el, options)
      expect(res.getAttribute('class')).toBe('other test')
      expect(res.getAttribute('title')).toBe('child')
    })

    it('class merge for svg elements', function () {
      el.setAttribute('class', 'test')
      options.template = '<circle class="other"></circle>'
      options.replace = true
      options._asComponent = true
      var res = transclude(el, options)
      expect(res.namespaceURI).toBe('http://www.w3.org/2000/svg')
      expect(res.getAttribute('class')).toBe('other test')
    })

  })
}