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

var Vue = require('../../../../src/vue')
var _ = require('../../../../src/util')
var compiler = require('../../../../src/compiler')
var compile = compiler.compile
var publicDirectives = require('../../../../src/directives/public')
var internalDirectives = require('../../../../src/directives/internal')

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

    var vm, el, data, directiveBind, directiveTeardown
    beforeEach(function () {
      // We mock vms here so we can assert what the generated
      // linker functions do.
      el = document.createElement('div')
      data = {}
      directiveBind = jasmine.createSpy('bind')
      directiveTeardown = jasmine.createSpy('teardown')
      vm = {
        _data: {},
        _directives: [],
        _bindDir: function (descriptor, node) {
          this._directives.push({
            name: descriptor.name,
            descriptor: descriptor,
            _bind: function () {
              directiveBind(this.name)
            },
            _teardown: directiveTeardown
          })
        },
        $eval: function (value) {
          return data[value]
        },
        $interpolate: function (value) {
          return data[value]
        },
        _context: {
          _directives: [],
          $get: function (v) {
            return 'from parent: ' + v
          }
        }
      }
      spyOn(vm, '_bindDir').and.callThrough()
      spyOn(vm, '$eval').and.callThrough()
      spyOn(vm, '$interpolate').and.callThrough()
      spyOn(_, 'warn')
    })

    it('normal directives', function () {
      el.setAttribute('v-a', 'b')
      el.innerHTML = '<p v-a:hello="a" v-b="1">hello</p><div v-b.literal="hi"></div>'
      var defA = { priority: 1 }
      var defB = { priority: 2 }
      var options = _.mergeOptions(Vue.options, {
        directives: {
          a: defA,
          b: defB
        }
      })
      var linker = compile(el, options)
      expect(typeof linker).toBe('function')
      linker(vm, el)
      expect(directiveBind.calls.count()).toBe(4)
      expect(vm._bindDir.calls.count()).toBe(4)

      // check if we are in firefox, which has different
      // attribute interation order
      var isAttrReversed = el.firstChild.attributes[0].name === 'v-b'

      // 1
      var args = vm._bindDir.calls.argsFor(0)
      expect(args[0].name).toBe('a')
      expect(args[0].expression).toBe('b')
      expect(args[0].def).toBe(defA)
      expect(args[1]).toBe(el)
      // 2
      args = vm._bindDir.calls.argsFor(isAttrReversed ? 2 : 1)
      expect(args[0].name).toBe('a')
      expect(args[0].expression).toBe('a')
      expect(args[0].def).toBe(defA)
      expect(args[0].arg).toBe('hello')
      expect(args[1]).toBe(el.firstChild)
      // 3 (expression literal)
      args = vm._bindDir.calls.argsFor(isAttrReversed ? 1 : 2)
      expect(args[0].name).toBe('b')
      expect(args[0].expression).toBe('1')
      expect(args[0].def).toBe(defB)
      expect(args[0].literal).toBe(true)
      expect(args[1]).toBe(el.firstChild)
      // 4 (explicit literal)
      args = vm._bindDir.calls.argsFor(3)
      expect(args[0].name).toBe('b')
      expect(args[0].expression).toBe('hi')
      expect(args[0].def).toBe(defB)
      expect(args[0].literal).toBe(true)
      expect(args[1]).toBe(el.lastChild)
      // check the priority sorting
      // the "b"s should be called first!
      expect(directiveBind.calls.argsFor(0)[0]).toBe('b')
      expect(directiveBind.calls.argsFor(1)[0]).toBe('b')
      expect(directiveBind.calls.argsFor(2)[0]).toBe('a')
      expect(directiveBind.calls.argsFor(3)[0]).toBe('a')
    })

    it('v-bind shorthand', function () {
      el.setAttribute(':class', 'a')
      el.setAttribute(':style', 'b')
      el.setAttribute(':title', 'c')

      // The order of setAttribute is not guaranteed to be the same with
      // the order of attribute enumberation, therefore we need to save
      // it here!
      var descriptors = {
        ':class': {
          name: 'class',
          attr: ':class',
          expression: 'a',
          def: internalDirectives.class
        },
        ':style': {
          name: 'style',
          attr: ':style',
          expression: 'b',
          def: internalDirectives.style
        },
        ':title': {
          name: 'bind',
          attr: ':title',
          expression: 'c',
          arg: 'title',
          def: publicDirectives.bind
        }
      }
      var expects = [].map.call(el.attributes, function (attr) {
        return descriptors[attr.name]
      })

      var linker = compile(el, Vue.options)
      linker(vm, el)
      expect(vm._bindDir.calls.count()).toBe(3)

      expects.forEach(function (e, i) {
        var args = vm._bindDir.calls.argsFor(i)
        for (var key in e) {
          expect(args[0][key]).toBe(e[key])
        }
        expect(args[1]).toBe(el)
      })
    })

    it('v-on shorthand', function () {
      el.innerHTML = '<div @click="a++"></div>'
      el = el.firstChild
      var linker = compile(el, Vue.options)
      linker(vm, el)
      expect(vm._bindDir.calls.count()).toBe(1)
      var args = vm._bindDir.calls.argsFor(0)
      expect(args[0].name).toBe('on')
      expect(args[0].expression).toBe('a++')
      expect(args[0].arg).toBe('click')
      expect(args[0].def).toBe(publicDirectives.on)
      expect(args[1]).toBe(el)
    })

    it('text interpolation', function () {
      data.b = 'yeah'
      el.innerHTML = '{{a}} and {{*b}}'
      var def = Vue.options.directives.text
      var linker = compile(el, Vue.options)
      linker(vm, el)
      // expect 1 call because one-time bindings do not generate a directive.
      expect(vm._bindDir.calls.count()).toBe(1)
      var args = vm._bindDir.calls.argsFor(0)
      expect(args[0].name).toBe('text')
      expect(args[0].expression).toBe('a')
      expect(args[0].def).toBe(def)
      // skip the node because it's generated in the linker fn via cloneNode
      // expect $eval to be called during onetime
      expect(vm.$eval).toHaveBeenCalledWith('b')
      // {{a}} is mocked so it's a space.
      // but we want to make sure {{*b}} worked.
      expect(el.innerHTML).toBe('  and yeah')
    })

    it('inline html', function () {
      data.html = '<div>yoyoyo</div>'
      el.innerHTML = '{{{html}}} {{{*html}}}'
      var htmlDef = Vue.options.directives.html
      var linker = compile(el, Vue.options)
      linker(vm, el)
      expect(vm._bindDir.calls.count()).toBe(1)
      var htmlArgs = vm._bindDir.calls.argsFor(0)
      expect(htmlArgs[0].name).toBe('html')
      expect(htmlArgs[0].expression).toBe('html')
      expect(htmlArgs[0].def).toBe(htmlDef)
      // with placeholder comments & interpolated one-time html
      expect(el.innerHTML).toBe('<!--v-html--> <div>yoyoyo</div>')
    })

    it('terminal directives', function () {
      el.innerHTML =
        '<div v-for="item in items"><p v-a="b"></p></div>' + // v-for
        '<div v-pre><p v-a="b"></p></div>' // v-pre
      var def = Vue.options.directives.for
      var linker = compile(el, Vue.options)
      linker(vm, el)
      // expect 1 call because terminal should return early and let
      // the directive handle the rest.
      expect(vm._bindDir.calls.count()).toBe(1)
      var args = vm._bindDir.calls.argsFor(0)
      expect(args[0].name).toBe('for')
      expect(args[0].expression).toBe('item in items')
      expect(args[0].def).toBe(def)
      expect(args[1]).toBe(el.firstChild)
    })

    it('custom element components', function () {
      var options = _.mergeOptions(Vue.options, {
        components: {
          'my-component': {}
        }
      })
      el.innerHTML = '<my-component><div v-a="b"></div></my-component>'
      var linker = compile(el, options)
      linker(vm, el)
      expect(vm._bindDir.calls.count()).toBe(1)
      var args = vm._bindDir.calls.argsFor(0)
      expect(args[0].name).toBe('component')
      expect(args[0].expression).toBe('my-component')
      expect(args[0].literal).toBe(true)
      expect(args[0].def).toBe(internalDirectives.component)
      expect(_.warn).not.toHaveBeenCalled()
    })

    it('props', function () {
      var bindingModes = Vue.config._propBindingModes
      var props = [
        { name: 'testNormal' },
        { name: 'testLiteral' },
        { name: 'testTwoWay' },
        { name: 'twoWayWarn' },
        { name: 'testOneTime' },
        { name: 'optimizeLiteral' }
      ]
      el.innerHTML = '<div ' +
        'v-bind:test-normal="a" ' +
        'test-literal="1" ' +
        ':optimize-literal="1" ' +
        ':test-two-way.sync="a" ' +
        ':two-way-warn.sync="a + 1" ' +
        ':test-one-time.once="a"></div>'
      compiler.compileAndLinkProps(vm, el.firstChild, props)
      expect(vm._bindDir.calls.count()).toBe(3) // skip literal and one time
      // literal
      expect(vm.testLiteral).toBe('1')
      expect(vm._data.testLiteral).toBe('1')
      expect(vm.optimizeLiteral).toBe(1)
      expect(vm._data.optimizeLiteral).toBe(1)
      // one time
      expect(vm.testOneTime).toBe('from parent: a')
      expect(vm._data.testOneTime).toBe('from parent: a')
      // normal
      var args = vm._bindDir.calls.argsFor(0)
      var prop = args[0].prop
      expect(args[0].name).toBe('prop')
      expect(prop.path).toBe('testNormal')
      expect(prop.parentPath).toBe('a')
      expect(prop.mode).toBe(bindingModes.ONE_WAY)
      // two way
      args = vm._bindDir.calls.argsFor(1)
      prop = args[0].prop
      expect(args[0].name).toBe('prop')
      expect(prop.path).toBe('testTwoWay')
      expect(prop.parentPath).toBe('a')
      expect(prop.mode).toBe(bindingModes.TWO_WAY)
      // two way warn
      expect(hasWarned(_, 'non-settable parent path')).toBe(true)
    })

    it('props on root instance', function () {
      // temporarily remove vm.$parent
      var context = vm._context
      vm._context = null
      el.setAttribute('v-bind:a', '"hi"')
      el.setAttribute(':b', 'hi')
      compiler.compileAndLinkProps(vm, el, [
        { name: 'a' },
        { name: 'b' }
      ])
      expect(vm._bindDir.calls.count()).toBe(0)
      expect(vm._data.a).toBe('hi')
      expect(hasWarned(_, 'Cannot bind dynamic prop on a root')).toBe(true)
      // restore parent mock
      vm._context = context
    })

    it('DocumentFragment', function () {
      var frag = document.createDocumentFragment()
      frag.appendChild(el)
      var el2 = document.createElement('div')
      frag.appendChild(el2)
      el.innerHTML = '{{*a}}'
      el2.innerHTML = '{{*b}}'
      data.a = 'A'
      data.b = 'B'
      var linker = compile(frag, Vue.options)
      linker(vm, frag)
      expect(el.innerHTML).toBe('A')
      expect(el2.innerHTML).toBe('B')
    })

    it('partial compilation', function () {
      el.innerHTML = '<div v-bind:test="abc">{{bcd}}<p v-show="ok"></p></div>'
      var linker = compile(el, Vue.options, true)
      var decompile = linker(vm, el)
      expect(vm._directives.length).toBe(3)
      decompile()
      expect(directiveTeardown.calls.count()).toBe(3)
      expect(vm._directives.length).toBe(0)
    })

    it('skip script tags', function () {
      el.innerHTML = '<script type="x/template">{{test}}</script>'
      var linker = compile(el, Vue.options)
      linker(vm, el)
      expect(vm._bindDir.calls.count()).toBe(0)
    })

    it('should handle container/replacer directives with same name', function () {
      var parentSpy = jasmine.createSpy()
      var childSpy = jasmine.createSpy()
      vm = new Vue({
        el: el,
        template:
          '<test class="a" v-on:click="test(1)"></test>',
        methods: {
          test: parentSpy
        },
        components: {
          test: {
            template: '<div class="b" v-on:click="test(2)"></div>',
            replace: true,
            methods: {
              test: childSpy
            }
          }
        }
      })
      expect(vm.$el.firstChild.className).toBe('b a')
      var e = document.createEvent('HTMLEvents')
      e.initEvent('click', true, true)
      vm.$el.firstChild.dispatchEvent(e)
      expect(parentSpy).toHaveBeenCalledWith(1)
      expect(childSpy).toHaveBeenCalledWith(2)
    })

    it('should teardown props and replacer directives when unlinking', function () {
      var vm = new Vue({
        el: el,
        template: '<test :msg="msg"></test>',
        data: {
          msg: 'hi'
        },
        components: {
          test: {
            props: ['msg'],
            template: '<div v-show="true"></div>',
            replace: true
          }
        }
      })
      var dirs = vm.$children[0]._directives
      expect(dirs.length).toBe(2)
      vm.$children[0].$destroy()
      var i = dirs.length
      while (i--) {
        expect(dirs[i]._bound).toBe(false)
      }
    })

    it('should remove parent container directives from parent when unlinking', function () {
      var vm = new Vue({
        el: el,
        template:
          '<test v-show="ok"></test>',
        data: {
          ok: true
        },
        components: {
          test: {
            template: 'hi'
          }
        }
      })
      expect(el.firstChild.style.display).toBe('')
      expect(vm._directives.length).toBe(2)
      expect(vm.$children.length).toBe(1)
      vm.$children[0].$destroy()
      expect(vm._directives.length).toBe(1)
      expect(vm.$children.length).toBe(0)
    })

    it('should remove transcluded directives from parent when unlinking (component)', function () {
      var vm = new Vue({
        el: el,
        template:
          '<test>{{test}}</test>',
        data: {
          test: 'parent'
        },
        components: {
          test: {
            template: '<slot></slot>'
          }
        }
      })
      expect(vm.$el.textContent).toBe('parent')
      expect(vm._directives.length).toBe(2)
      expect(vm.$children.length).toBe(1)
      vm.$children[0].$destroy()
      expect(vm._directives.length).toBe(1)
      expect(vm.$children.length).toBe(0)
    })

    it('should remove transcluded directives from parent when unlinking (v-if + component)', function (done) {
      var vm = new Vue({
        el: el,
        template:
          '<div v-if="ok">' +
            '<test>{{test}}</test>' +
          '</div>',
        data: {
          test: 'parent',
          ok: true
        },
        components: {
          test: {
            template: '<slot></slot>'
          }
        }
      })
      expect(vm.$el.textContent).toBe('parent')
      expect(vm._directives.length).toBe(3)
      expect(vm.$children.length).toBe(1)
      vm.ok = false
      _.nextTick(function () {
        expect(vm.$el.textContent).toBe('')
        expect(vm._directives.length).toBe(1)
        expect(vm.$children.length).toBe(0)
        done()
      })
    })

    it('element directive', function () {
      new Vue({
        el: el,
        template: '<test>{{a}}</test>',
        elementDirectives: {
          test: {
            bind: function () {
              this.el.setAttribute('test', '1')
            }
          }
        }
      })
      // should be terminal
      expect(el.innerHTML).toBe('<test test="1">{{a}}</test>')
    })

    it('attribute interpolation', function (done) {
      var vm = new Vue({
        el: el,
        template: '<div id="{{a}}" class="b {{c}} d"></div>',
        data: {
          a: 'aaa',
          c: 'ccc'
        }
      })
      expect(el.firstChild.id).toBe('aaa')
      expect(el.firstChild.className).toBe('b ccc d')
      vm.a = 'aa'
      vm.c = 'cc'
      _.nextTick(function () {
        expect(el.firstChild.id).toBe('aa')
        expect(el.firstChild.className).toBe('b cc d')
        done()
      })
    })

    it('attribute interpolation: special cases', function () {
      new Vue({
        el: el,
        template: '<label for="{{a}}" data-test="{{b}}"></label><form accept-charset="{{c}}"></form>',
        data: {
          a: 'aaa',
          b: 'bbb',
          c: 'UTF-8'
        }
      })
      expect(el.innerHTML).toBe('<label for="aaa" data-test="bbb"></label><form accept-charset="UTF-8"></form>')
    })

    it('attribute interpolation: warn invalid', function () {
      new Vue({
        el: el,
        template: '<div hello="{{a}}"></div>',
        data: {
          a: '123'
        }
      })
      expect(el.innerHTML).toBe('<div></div>')
      expect(hasWarned(_, 'attribute interpolation is allowed only in valid native attributes')).toBe(true)
    })

  })
}