vue/test/unit/specs/directives/internal/component_spec.js

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

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

    var el
    beforeEach(function () {
      el = document.createElement('div')
      document.body.appendChild(el)
      spyOn(_, 'warn')
    })

    afterEach(function () {
      document.body.removeChild(el)
    })

    it('static', function () {
      new Vue({
        el: el,
        template: '<test></test>',
        components: {
          test: {
            data: function () {
              return { a: 123 }
            },
            template: '{{a}}'
          }
        }
      })
      expect(el.innerHTML).toBe('<test>123</test>')
    })

    it('replace', function () {
      new Vue({
        el: el,
        template: '<test></test>',
        components: {
          test: {
            replace: true,
            data: function () {
              return { a: 123 }
            },
            template: '<p>{{a}}</p>'
          }
        }
      })
      expect(el.innerHTML).toBe('<p>123</p>')
    })

    it('"is" on table elements', function () {
      var vm = new Vue({
        el: el,
        template: '<table><tbody><tr is="test"></tr></tbody></table>',
        components: {
          test: {
            data: function () {
              return { a: 123 }
            },
            template: '<td>{{a}}</td>'
          }
        }
      })
      expect(el.innerHTML).toBe(vm.$options.template.replace(/<tr.*\/tr>/, '<tr><td>123</td></tr>'))
      expect(_.warn).not.toHaveBeenCalled()
    })

    it('inline-template', function () {
      new Vue({
        el: el,
        template: '<test inline-template>{{a}}</test>',
        data: {
          a: 'parent'
        },
        components: {
          test: {
            data: function () {
              return { a: 'child' }
            },
            template: 'child option template'
          }
        }
      })
      expect(el.innerHTML).toBe('<test>child</test>')
    })

    it('block replace', function () {
      new Vue({
        el: el,
        template: '<test></test>',
        components: {
          test: {
            replace: true,
            data: function () {
              return { a: 123, b: 234 }
            },
            template: '<p>{{a}}</p><p>{{b}}</p>'
          }
        }
      })
      expect(el.innerHTML).toBe('<p>123</p><p>234</p>')
    })

    it('dynamic', function (done) {
      var vm = new Vue({
        el: el,
        template: '<component :is="view" :view="view"></component>',
        data: {
          view: 'view-a'
        },
        components: {
          'view-a': {
            template: '<div>AAA</div>',
            replace: true,
            data: function () {
              return { view: 'a' }
            }
          },
          'view-b': {
            template: '<div>BBB</div>',
            replace: true,
            data: function () {
              return { view: 'b' }
            }
          }
        }
      })
      expect(el.innerHTML).toBe('<div view="view-a">AAA</div>')
      vm.view = 'view-b'
      _.nextTick(function () {
        expect(el.innerHTML).toBe('<div view="view-b">BBB</div>')
        vm.view = ''
        _.nextTick(function () {
          expect(el.innerHTML).toBe('')
          done()
        })
      })
    })

    it('keep-alive', function (done) {
      var spyA = jasmine.createSpy()
      var spyB = jasmine.createSpy()
      var vm = new Vue({
        el: el,
        template: '<component :is="view" keep-alive></component>',
        data: {
          view: 'view-a'
        },
        components: {
          'view-a': {
            created: spyA,
            template: '<div>AAA</div>',
            replace: true
          },
          'view-b': {
            created: spyB,
            template: '<div>BBB</div>',
            replace: true
          }
        }
      })
      expect(el.innerHTML).toBe('<div>AAA</div>')
      expect(spyA.calls.count()).toBe(1)
      expect(spyB.calls.count()).toBe(0)
      vm.view = 'view-b'
      _.nextTick(function () {
        expect(el.innerHTML).toBe('<div>BBB</div>')
        expect(spyA.calls.count()).toBe(1)
        expect(spyB.calls.count()).toBe(1)
        vm.view = 'view-a'
        _.nextTick(function () {
          expect(el.innerHTML).toBe('<div>AAA</div>')
          expect(spyA.calls.count()).toBe(1)
          expect(spyB.calls.count()).toBe(1)
          vm.view = 'view-b'
          _.nextTick(function () {
            expect(el.innerHTML).toBe('<div>BBB</div>')
            expect(spyA.calls.count()).toBe(1)
            expect(spyB.calls.count()).toBe(1)
            done()
          })
        })
      })
    })

    it('should compile parent template directives & content in parent scope', function (done) {
      var vm = new Vue({
        el: el,
        data: {
          ok: false,
          message: 'hello'
        },
        template: '<test v-show="ok">{{message}}</test>',
        components: {
          test: {
            template: '<div><slot></slot> {{message}}</div>',
            replace: true,
            data: function () {
              return {
                message: 'world'
              }
            }
          }
        }
      })
      expect(el.firstChild.style.display).toBe('none')
      expect(el.firstChild.textContent).toBe('hello world')
      vm.ok = true
      vm.message = 'bye'
      _.nextTick(function () {
        expect(el.firstChild.style.display).toBe('')
        expect(el.firstChild.textContent).toBe('bye world')
        done()
      })
    })

    it('parent content + v-if', function (done) {
      var vm = new Vue({
        el: el,
        data: {
          ok: false,
          message: 'hello'
        },
        template: '<test v-if="ok">{{message}}</test>',
        components: {
          test: {
            template: '<slot></slot> {{message}}',
            data: function () {
              return {
                message: 'world'
              }
            }
          }
        }
      })
      expect(el.textContent).toBe('')
      expect(vm.$children.length).toBe(0)
      expect(vm._directives.length).toBe(1) // v-if
      vm.ok = true
      _.nextTick(function () {
        expect(vm.$children.length).toBe(1)
        expect(vm._directives.length).toBe(3) // v-if, component, v-text
        expect(el.textContent).toBe('hello world')
        done()
      })
    })

    it('props', function () {
      new Vue({
        el: el,
        data: {
          list: [{a: 1}, {a: 2}]
        },
        template: '<test :collection="list"></test>',
        components: {
          test: {
            template: '<ul><li v-for="item in collection">{{item.a}}</li></ul>',
            replace: true,
            props: ['collection']
          }
        }
      })
      expect(el.innerHTML).toBe('<ul><li>1</li><li>2</li></ul>')
    })

    it('activate hook for static component', function (done) {
      new Vue({
        el: el,
        template: '<view-a></view-a>',
        components: {
          'view-a': {
            template: 'AAA',
            activate: function (ready) {
              setTimeout(function () {
                expect(el.textContent).toBe('')
                ready()
                expect(el.textContent).toBe('AAA')
                done()
              }, 0)
            }
          }
        }
      })
    })

    it('activate hook for dynamic components', function (done) {
      var next
      var vm = new Vue({
        el: el,
        data: {
          view: 'view-a'
        },
        template: '<component :is="view"></component>',
        components: {
          'view-a': {
            template: 'AAA',
            activate: function (ready) {
              next = ready
            }
          },
          'view-b': {
            template: 'BBB',
            activate: function (ready) {
              next = ready
            }
          }
        }
      })
      expect(next).toBeTruthy()
      expect(el.textContent).toBe('')
      next()
      expect(el.textContent).toBe('AAA')
      vm.view = 'view-b'
      _.nextTick(function () {
        expect(el.textContent).toBe('AAA')
        // old vm is already removed, this is the new vm
        expect(vm.$children.length).toBe(1)
        next()
        expect(el.textContent).toBe('BBB')
        // ensure switching before ready event correctly
        // cleans up the component being waited on.
        // see #1152
        vm.view = 'view-a'
        _.nextTick(function () {
          vm.view = 'view-b'
          _.nextTick(function () {
            expect(vm.$children.length).toBe(1)
            expect(vm.$children[0].$el.textContent).toBe('BBB')
            done()
          })
        })
      })
    })

    it('activate hook + keep-alive', function (done) {
      var next
      var vm = new Vue({
        el: el,
        data: {
          view: 'view-a'
        },
        template: '<component :is="view" keep-alive></component>',
        components: {
          'view-a': {
            template: 'AAA',
            activate: function (ready) {
              next = ready
            }
          },
          'view-b': {
            template: 'BBB',
            activate: function (ready) {
              next = ready
            }
          }
        }
      })
      next()
      expect(el.textContent).toBe('AAA')
      vm.view = 'view-b'
      _.nextTick(function () {
        expect(vm.$children.length).toBe(2)
        next()
        expect(el.textContent).toBe('BBB')
        vm.view = 'view-a'
        _.nextTick(function () {
          // should switch without the need to emit
          // because of keep-alive
          expect(el.textContent).toBe('AAA')
          done()
        })
      })
    })

    it('transition-mode: in-out', function (done) {
      var spy1 = jasmine.createSpy('enter')
      var spy2 = jasmine.createSpy('leave')
      var next
      var vm = new Vue({
        el: el,
        data: {
          view: 'view-a'
        },
        template: '<component :is="view" transition="test" transition-mode="in-out"></component>',
        components: {
          'view-a': { template: 'AAA' },
          'view-b': { template: 'BBB' }
        },
        transitions: {
          test: {
            enter: function (el, done) {
              spy1()
              next = done
            },
            leave: function (el, done) {
              spy2()
              _.nextTick(done)
            }
          }
        }
      })
      expect(el.textContent).toBe('AAA')
      vm.view = 'view-b'
      _.nextTick(function () {
        expect(spy1).toHaveBeenCalled()
        expect(spy2).not.toHaveBeenCalled()
        expect(el.textContent).toBe('AAABBB')
        next()
        _.nextTick(function () {
          expect(spy2).toHaveBeenCalled()
          _.nextTick(function () {
            expect(el.textContent).toBe('BBB')
            done()
          })
        })
      })
    })

    it('transition-mode: out-in', function (done) {
      var spy1 = jasmine.createSpy('enter')
      var spy2 = jasmine.createSpy('leave')
      var next
      var vm = new Vue({
        el: el,
        data: {
          view: 'view-a'
        },
        template: '<component :is="view" transition="test" transition-mode="out-in"></component>',
        components: {
          'view-a': { template: 'AAA' },
          'view-b': { template: 'BBB' }
        },
        transitions: {
          test: {
            enter: function (el, done) {
              spy2()
              _.nextTick(done)
            },
            leave: function (el, done) {
              spy1()
              next = done
            }
          }
        }
      })
      expect(el.textContent).toBe('AAA')
      vm.view = 'view-b'
      _.nextTick(function () {
        expect(spy1).toHaveBeenCalled()
        expect(spy2).not.toHaveBeenCalled()
        expect(el.textContent).toBe('AAA')
        next()
        expect(spy2).toHaveBeenCalled()
        expect(el.textContent).toBe('BBB')
        done()
      })
    })

    it('teardown', function (done) {
      var vm = new Vue({
        el: el,
        template: '<component :is="view" keep-alive></component>',
        data: {
          view: 'test'
        },
        components: {
          test: {},
          test2: {}
        }
      })
      vm.view = 'test2'
      _.nextTick(function () {
        expect(vm.$children.length).toBe(2)
        var child = vm.$children[0]
        var child2 = vm.$children[1]
        vm._directives[0].unbind()
        expect(vm._directives[0].cache).toBeNull()
        expect(vm.$children.length).toBe(0)
        expect(child._isDestroyed).toBe(true)
        expect(child2._isDestroyed).toBe(true)
        done()
      })
    })

    it('already mounted warn', function () {
      el.setAttribute('is', 'test')
      new Vue({
        el: el
      })
      expect(hasWarned(_, 'cannot mount component "test" on already mounted element')).toBe(true)
    })

    it('not found component should not throw', function () {
      expect(function () {
        new Vue({
          el: el,
          template: '<div is="non-existent"></div>'
        })
      }).not.toThrow()
    })
  })
}