Merge branch 'refactor-realtime-issue' into 'master'

Refactored issue tealtime elements

See merge request !11242

app/assets/javascripts/issue_show/actions/tasks.js

-export default (newStateData, tasks) => {
-  const $tasks = $('#task_status');
-  const $tasksShort = $('#task_status_short');
-  const $issueableHeader = $('.issuable-header');
-  const tasksStates = { newState: null, currentState: null };
-
-  if ($tasks.length === 0) {
-    if (!(newStateData.task_status.indexOf('0 of 0') === 0)) {
-      $issueableHeader.append(`<span id="task_status">${newStateData.task_status}</span>`);
-    } else {
-      $issueableHeader.append('<span id="task_status"></span>');
-    }
-  } else {
-    tasksStates.newState = newStateData.task_status.indexOf('0 of 0') === 0;
-    tasksStates.currentState = tasks.indexOf('0 of 0') === 0;
-  }
-
-  if ($tasks.length !== 0 && !tasksStates.newState) {
-    $tasks.text(newStateData.task_status);
-    $tasksShort.text(newStateData.task_status);
-  } else if (tasksStates.currentState) {
-    $issueableHeader.append(`<span id="task_status">${newStateData.task_status}</span>`);
-  } else if (tasksStates.newState) {
-    $tasks.remove();
-    $tasksShort.remove();
-  }
-};

app/assets/javascripts/issue_show/components/app.vue

+<script>
+import Visibility from 'visibilityjs';
+import Poll from '../../lib/utils/poll';
+import Service from '../services/index';
+import Store from '../stores';
+import titleComponent from './title.vue';
+import descriptionComponent from './description.vue';
+
+export default {
+  props: {
+    endpoint: {
+      required: true,
+      type: String,
+    },
+    canUpdate: {
+      required: true,
+      type: Boolean,
+    },
+    issuableRef: {
+      type: String,
+      required: true,
+    },
+    initialTitle: {
+      type: String,
+      required: true,
+    },
+    initialDescriptionHtml: {
+      type: String,
+      required: false,
+      default: '',
+    },
+    initialDescriptionText: {
+      type: String,
+      required: false,
+      default: '',
+    },
+  },
+  data() {
+    const store = new Store({
+      titleHtml: this.initialTitle,
+      descriptionHtml: this.initialDescriptionHtml,
+      descriptionText: this.initialDescriptionText,
+    });
+
+    return {
+      store,
+      state: store.state,
+    };
+  },
+  components: {
+    descriptionComponent,
+    titleComponent,
+  },
+  created() {
+    const resource = new Service(this.endpoint);
+    const poll = new Poll({
+      resource,
+      method: 'getData',
+      successCallback: (res) => {
+        this.store.updateState(res.json());
+      },
+      errorCallback(err) {
+        throw new Error(err);
+      },
+    });
+
+    if (!Visibility.hidden()) {
+      poll.makeRequest();
+    }
+
+    Visibility.change(() => {
+      if (!Visibility.hidden()) {
+        poll.restart();
+      } else {
+        poll.stop();
+      }
+    });
+  },
+};
+</script>
+
+<template>
+  <div>
+    <title-component
+      :issuable-ref="issuableRef"
+      :title-html="state.titleHtml"
+      :title-text="state.titleText" />
+    <description-component
+      v-if="state.descriptionHtml"
+      :can-update="canUpdate"
+      :description-html="state.descriptionHtml"
+      :description-text="state.descriptionText"
+      :updated-at="state.updatedAt"
+      :task-status="state.taskStatus" />
+  </div>
+</template>

app/assets/javascripts/issue_show/components/description.vue

+<script>
+  import animateMixin from '../mixins/animate';
+
+  export default {
+    mixins: [animateMixin],
+    props: {
+      canUpdate: {
+        type: Boolean,
+        required: true,
+      },
+      descriptionHtml: {
+        type: String,
+        required: true,
+      },
+      descriptionText: {
+        type: String,
+        required: true,
+      },
+      updatedAt: {
+        type: String,
+        required: true,
+      },
+      taskStatus: {
+        type: String,
+        required: true,
+      },
+    },
+    data() {
+      return {
+        preAnimation: false,
+        pulseAnimation: false,
+        timeAgoEl: $('.js-issue-edited-ago'),
+      };
+    },
+    watch: {
+      descriptionHtml() {
+        this.animateChange();
+
+        this.$nextTick(() => {
+          const toolTipTime = gl.utils.formatDate(this.updatedAt);
+
+          this.timeAgoEl.attr('datetime', this.updatedAt)
+            .attr('title', toolTipTime)
+            .tooltip('fixTitle');
+
+          this.renderGFM();
+        });
+      },
+      taskStatus() {
+        const taskRegexMatches = this.taskStatus.match(/(\d+) of (\d+)/);
+        const $issuableHeader = $('.issuable-meta');
+        const $tasks = $('#task_status', $issuableHeader);
+        const $tasksShort = $('#task_status_short', $issuableHeader);
+
+        if (taskRegexMatches) {
+          $tasks.text(this.taskStatus);
+          $tasksShort.text(`${taskRegexMatches[1]}/${taskRegexMatches[2]} task${taskRegexMatches[2] > 1 ? 's' : ''}`);
+        } else {
+          $tasks.text('');
+          $tasksShort.text('');
+        }
+      },
+    },
+    methods: {
+      renderGFM() {
+        $(this.$refs['gfm-entry-content']).renderGFM();
+
+        if (this.canUpdate) {
+          // eslint-disable-next-line no-new
+          new gl.TaskList({
+            dataType: 'issue',
+            fieldName: 'description',
+            selector: '.detail-page-description',
+          });
+        }
+      },
+    },
+    mounted() {
+      this.renderGFM();
+    },
+  };
+</script>
+
+<template>
+  <div
+    class="description"
+    :class="{
+      'js-task-list-container': canUpdate
+    }">
+    <div
+      class="wiki"
+      :class="{
+        'issue-realtime-pre-pulse': preAnimation,
+        'issue-realtime-trigger-pulse': pulseAnimation
+      }"
+      v-html="descriptionHtml"
+      ref="gfm-content">
+    </div>
+    <textarea
+      class="hidden js-task-list-field"
+      v-if="descriptionText"
+      v-model="descriptionText">
+    </textarea>
+  </div>
+</template>

app/assets/javascripts/issue_show/components/title.vue

+<script>
+  import animateMixin from '../mixins/animate';
+
+  export default {
+    mixins: [animateMixin],
+    data() {
+      return {
+        preAnimation: false,
+        pulseAnimation: false,
+        titleEl: document.querySelector('title'),
+      };
+    },
+    props: {
+      issuableRef: {
+        type: String,
+        required: true,
+      },
+      titleHtml: {
+        type: String,
+        required: true,
+      },
+      titleText: {
+        type: String,
+        required: true,
+      },
+    },
+    watch: {
+      titleHtml() {
+        this.setPageTitle();
+        this.animateChange();
+      },
+    },
+    methods: {
+      setPageTitle() {
+        const currentPageTitleScope = this.titleEl.innerText.split('·');
+        currentPageTitleScope[0] = `${this.titleText} (${this.issuableRef}) `;
+        this.titleEl.textContent = currentPageTitleScope.join('·');
+      },
+    },
+  };
+</script>
+
+<template>
+  <h2
+    class="title"
+    :class="{
+      'issue-realtime-pre-pulse': preAnimation,
+      'issue-realtime-trigger-pulse': pulseAnimation
+    }"
+    v-html="titleHtml"
+  >
+  </h2>
+</template>

app/assets/javascripts/issue_show/index.js

 import Vue from 'vue';
-import IssueTitle from './issue_title_description.vue';
+import issuableApp from './components/app.vue';
 import '../vue_shared/vue_resource_interceptor';
 
-(() => {
-  const issueTitleData = document.querySelector('.issue-title-data').dataset;
-  const { canUpdateTasksClass, endpoint } = issueTitleData;
+document.addEventListener('DOMContentLoaded', () => new Vue({
+  el: document.getElementById('js-issuable-app'),
+  components: {
+    issuableApp,
+  },
+  data() {
+    const issuableElement = this.$options.el;
+    const issuableTitleElement = issuableElement.querySelector('.title');
+    const issuableDescriptionElement = issuableElement.querySelector('.wiki');
+    const issuableDescriptionTextarea = issuableElement.querySelector('.js-task-list-field');
+    const {
+      canUpdate,
+      endpoint,
+      issuableRef,
+    } = issuableElement.dataset;
 
-  const vm = new Vue({
-    el: '.issue-title-entrypoint',
-    render: createElement => createElement(IssueTitle, {
+    return {
+      canUpdate: gl.utils.convertPermissionToBoolean(canUpdate),
+      endpoint,
+      issuableRef,
+      initialTitle: issuableTitleElement.innerHTML,
+      initialDescriptionHtml: issuableDescriptionElement ? issuableDescriptionElement.innerHTML : '',
+      initialDescriptionText: issuableDescriptionTextarea ? issuableDescriptionTextarea.textContent : '',
+    };
+  },
+  render(createElement) {
+    return createElement('issuable-app', {
       props: {
-        canUpdateTasksClass,
-        endpoint,
+        canUpdate: this.canUpdate,
+        endpoint: this.endpoint,
+        issuableRef: this.issuableRef,
+        initialTitle: this.initialTitle,
+        initialDescriptionHtml: this.initialDescriptionHtml,
+        initialDescriptionText: this.initialDescriptionText,
       },
-    }),
-  });
-
-  return vm;
-})();
+    });
+  },
+}));

app/assets/javascripts/issue_show/issue_title_description.vue

-<script>
-import Visibility from 'visibilityjs';
-import Poll from './../lib/utils/poll';
-import Service from './services/index';
-import tasks from './actions/tasks';
-
-export default {
-  props: {
-    endpoint: {
-      required: true,
-      type: String,
-    },
-    canUpdateTasksClass: {
-      required: true,
-      type: String,
-    },
-  },
-  data() {
-    const resource = new Service(this.$http, this.endpoint);
-
-    const poll = new Poll({
-      resource,
-      method: 'getTitle',
-      successCallback: (res) => {
-        this.renderResponse(res);
-      },
-      errorCallback: (err) => {
-        throw new Error(err);
-      },
-    });
-
-    return {
-      poll,
-      apiData: {},
-      tasks: '0 of 0',
-      title: null,
-      titleText: '',
-      titleFlag: {
-        pre: true,
-        pulse: false,
-      },
-      description: null,
-      descriptionText: '',
-      descriptionChange: false,
-      descriptionFlag: {
-        pre: true,
-        pulse: false,
-      },
-      timeAgoEl: $('.issue_edited_ago'),
-      titleEl: document.querySelector('title'),
-    };
-  },
-  methods: {
-    updateFlag(key, toggle) {
-      this[key].pre = toggle;
-      this[key].pulse = !toggle;
-    },
-    renderResponse(res) {
-      this.apiData = res.json();
-      this.triggerAnimation();
-    },
-    updateTaskHTML() {
-      tasks(this.apiData, this.tasks);
-    },
-    elementsToVisualize(noTitleChange, noDescriptionChange) {
-      if (!noTitleChange) {
-        this.titleText = this.apiData.title_text;
-        this.updateFlag('titleFlag', true);
-      }
-
-      if (!noDescriptionChange) {
-        // only change to true when we need to bind TaskLists the html of description
-        this.descriptionChange = true;
-        this.updateTaskHTML();
-        this.tasks = this.apiData.task_status;
-        this.updateFlag('descriptionFlag', true);
-      }
-    },
-    setTabTitle() {
-      const currentTabTitleScope = this.titleEl.innerText.split('·');
-      currentTabTitleScope[0] = `${this.titleText} (#${this.apiData.issue_number}) `;
-      this.titleEl.innerText = currentTabTitleScope.join('·');
-    },
-    animate(title, description) {
-      this.title = title;
-      this.description = description;
-      this.setTabTitle();
-
-      this.$nextTick(() => {
-        this.updateFlag('titleFlag', false);
-        this.updateFlag('descriptionFlag', false);
-      });
-    },
-    triggerAnimation() {
-      // always reset to false before checking the change
-      this.descriptionChange = false;
-
-      const { title, description } = this.apiData;
-      this.descriptionText = this.apiData.description_text;
-
-      const noTitleChange = this.title === title;
-      const noDescriptionChange = this.description === description;
-
-      /**
-      * since opacity is changed, even if there is no diff for Vue to update
-      * we must check the title/description even on a 304 to ensure no visual change
-      */
-      if (noTitleChange && noDescriptionChange) return;
-
-      this.elementsToVisualize(noTitleChange, noDescriptionChange);
-      this.animate(title, description);
-    },
-    updateEditedTimeAgo() {
-      const toolTipTime = gl.utils.formatDate(this.apiData.updated_at);
-      this.timeAgoEl.attr('datetime', this.apiData.updated_at);
-      this.timeAgoEl.attr('title', toolTipTime).tooltip('fixTitle');
-    },
-  },
-  created() {
-    if (!Visibility.hidden()) {
-      this.poll.makeRequest();
-    }
-
-    Visibility.change(() => {
-      if (!Visibility.hidden()) {
-        this.poll.restart();
-      } else {
-        this.poll.stop();
-      }
-    });
-  },
-  updated() {
-    // if new html is injected (description changed) - bind TaskList and call renderGFM
-    if (this.descriptionChange) {
-      this.updateEditedTimeAgo();
-
-      $(this.$refs['issue-content-container-gfm-entry']).renderGFM();
-
-      const tl = new gl.TaskList({
-        dataType: 'issue',
-        fieldName: 'description',
-        selector: '.detail-page-description',
-      });
-
-      return tl && null;
-    }
-
-    return null;
-  },
-};
-</script>
-
-<template>
-  <div>
-    <h2
-      class="title"
-      :class="{ 'issue-realtime-pre-pulse': titleFlag.pre, 'issue-realtime-trigger-pulse': titleFlag.pulse }"
-      ref="issue-title"
-      v-html="title"
-    >
-    </h2>
-    <div
-      class="description is-task-list-enabled"
-      :class="canUpdateTasksClass"
-      v-if="description"
-    >
-      <div
-        class="wiki"
-        :class="{ 'issue-realtime-pre-pulse': descriptionFlag.pre, 'issue-realtime-trigger-pulse': descriptionFlag.pulse }"
-        v-html="description"
-        ref="issue-content-container-gfm-entry"
-      >
-      </div>
-      <textarea
-        class="hidden js-task-list-field"
-        v-if="descriptionText"
-      >{{descriptionText}}</textarea>
-    </div>
-  </div>
-</template>

app/assets/javascripts/issue_show/mixins/animate.js

+export default {
+  methods: {
+    animateChange() {
+      this.preAnimation = true;
+      this.pulseAnimation = false;
+
+      this.$nextTick(() => {
+        this.preAnimation = false;
+        this.pulseAnimation = true;
+      });
+    },
+  },
+};

app/assets/javascripts/issue_show/services/index.js

+import Vue from 'vue';
+import VueResource from 'vue-resource';
+
+Vue.use(VueResource);
+
 export default class Service {
-  constructor(resource, endpoint) {
-    this.resource = resource;
+  constructor(endpoint) {
     this.endpoint = endpoint;
+
+    this.resource = Vue.resource(this.endpoint);
   }
 
-  getTitle() {
-    return this.resource.get(this.endpoint);
+  getData() {
+    return this.resource.get();
   }
 }

app/assets/javascripts/issue_show/stores/index.js

+export default class Store {
+  constructor({
+    titleHtml,
+    descriptionHtml,
+    descriptionText,
+  }) {
+    this.state = {
+      titleHtml,
+      titleText: '',
+      descriptionHtml,
+      descriptionText,
+      taskStatus: '',
+      updatedAt: '',
+    };
+  }
+
+  updateState(data) {
+    this.state.titleHtml = data.title;
+    this.state.titleText = data.title_text;
+    this.state.descriptionHtml = data.description;
+    this.state.descriptionText = data.description_text;
+    this.state.taskStatus = data.task_status;
+    this.state.updatedAt = data.updated_at;
+  }
+}

app/assets/stylesheets/framework/mobile.scss

@@ -112,7 +112,7 @@
     }
   }
 
-  .issue_edited_ago,
+  .issue-edited-ago,
   .note_edited_ago {
     display: none;
   }

app/controllers/projects/issues_controller.rb

@@ -208,7 +208,6 @@ class Projects::IssuesController < Projects::ApplicationController
       description: view_context.markdown_field(@issue, :description),
       description_text: @issue.description,
       task_status: @issue.task_status,
-      issue_number: @issue.iid,
       updated_at: @issue.updated_at
     }
   end

app/helpers/issuables_helper.rb

@@ -136,11 +136,9 @@ module IssuablesHelper
       author_output << link_to_member(project, issuable.author, size: 24, by_username: true, avatar: false, mobile_classes: "hidden-sm hidden-md hidden-lg")
     end
 
-    if issuable.tasks?
-      output << "&ensp;".html_safe
-      output << content_tag(:span, issuable.task_status, id: "task_status", class: "hidden-xs hidden-sm")
-      output << content_tag(:span, issuable.task_status_short, id: "task_status_short", class: "hidden-md hidden-lg")
-    end
+    output << "&ensp;".html_safe
+    output << content_tag(:span, issuable.task_status, id: "task_status", class: "hidden-xs hidden-sm")
+    output << content_tag(:span, issuable.task_status_short, id: "task_status_short", class: "hidden-md hidden-lg")
 
     output
   end

app/views/projects/issues/show.html.haml

@@ -51,12 +51,17 @@
 
 .issue-details.issuable-details
   .detail-page-description.content-block
-    .issue-title-data.hidden{ "data" => { "endpoint" => rendered_title_namespace_project_issue_path(@project.namespace, @project, @issue),
-      "can-update-tasks-class" => can?(current_user, :update_issue, @issue) ? 'js-task-list-container' : '',
+    #js-issuable-app{ "data" => { "endpoint" => rendered_title_namespace_project_issue_path(@project.namespace, @project, @issue),
+      "can-update" => can?(current_user, :update_issue, @issue).to_s,
+      "issuable-ref" => @issue.to_reference,
     } }
-    .issue-title-entrypoint
+      %h2.title= markdown_field(@issue, :title)
+      - if @issue.description.present?
+        .description{ class: can?(current_user, :update_issue, @issue) ? 'js-task-list-container' : '' }
+          .wiki= markdown_field(@issue, :description)
+          %textarea.hidden.js-task-list-field= @issue.description
 
-    = edited_time_ago_with_tooltip(@issue, placement: 'bottom', html_class: 'issue_edited_ago')
+    = edited_time_ago_with_tooltip(@issue, placement: 'bottom', html_class: 'issue-edited-ago js-issue-edited-ago')
 
     #merge-requests{ data: { url: referenced_merge_requests_namespace_project_issue_url(@project.namespace, @project, @issue) } }
       // This element is filled in using JavaScript.

spec/javascripts/issue_show/issue_title_description_spec.js → spec/javascripts/issue_show/components/app_spec.js

 import Vue from 'vue';
-import $ from 'jquery';
 import '~/render_math';
 import '~/render_gfm';
-import issueTitleDescription from '~/issue_show/issue_title_description.vue';
-import issueShowData from './mock_data';
-
-window.$ = $;
+import issuableApp from '~/issue_show/components/app.vue';
+import issueShowData from '../mock_data';
 
 const issueShowInterceptor = data => (request, next) => {
   next(request.respondWith(JSON.stringify(data), {
@@ -16,42 +13,45 @@ const issueShowInterceptor = data => (request, next) => {
   }));
 };
 
-describe('Issue Title', () => {
+describe('Issuable output', () => {
   document.body.innerHTML = '<span id="task_status"></span>';
 
-  let IssueTitleDescriptionComponent;
+  let vm;
 
   beforeEach(() => {
-    IssueTitleDescriptionComponent = Vue.extend(issueTitleDescription);
-  });
-
-  afterEach(() => {
-    Vue.http.interceptors = _.without(Vue.http.interceptors, issueShowInterceptor);
-  });
-
-  it('should render a title/description and update title/description on update', (done) => {
+    const IssuableDescriptionComponent = Vue.extend(issuableApp);
     Vue.http.interceptors.push(issueShowInterceptor(issueShowData.initialRequest));
 
-    const issueShowComponent = new IssueTitleDescriptionComponent({
+    vm = new IssuableDescriptionComponent({
       propsData: {
-        canUpdateIssue: '.css-stuff',
+        canUpdate: true,
         endpoint: '/gitlab-org/gitlab-shell/issues/9/rendered_title',
+        issuableRef: '#1',
+        initialTitle: '',
+        initialDescriptionHtml: '',
+        initialDescriptionText: '',
       },
     }).$mount();
+  });
 
+  afterEach(() => {
+    Vue.http.interceptors = _.without(Vue.http.interceptors, issueShowInterceptor);
+  });
+
+  it('should render a title/description and update title/description on update', (done) => {
     setTimeout(() => {
       expect(document.querySelector('title').innerText).toContain('this is a title (#1)');
-      expect(issueShowComponent.$el.querySelector('.title').innerHTML).toContain('<p>this is a title</p>');
-      expect(issueShowComponent.$el.querySelector('.wiki').innerHTML).toContain('<p>this is a description!</p>');
-      expect(issueShowComponent.$el.querySelector('.js-task-list-field').innerText).toContain('this is a description');
+      expect(vm.$el.querySelector('.title').innerHTML).toContain('<p>this is a title</p>');
+      expect(vm.$el.querySelector('.wiki').innerHTML).toContain('<p>this is a description!</p>');
+      expect(vm.$el.querySelector('.js-task-list-field').value).toContain('this is a description');
 
       Vue.http.interceptors.push(issueShowInterceptor(issueShowData.secondRequest));
 
       setTimeout(() => {
         expect(document.querySelector('title').innerText).toContain('2 (#1)');
-        expect(issueShowComponent.$el.querySelector('.title').innerHTML).toContain('<p>2</p>');
-        expect(issueShowComponent.$el.querySelector('.wiki').innerHTML).toContain('<p>42</p>');
-        expect(issueShowComponent.$el.querySelector('.js-task-list-field').innerText).toContain('42');
+        expect(vm.$el.querySelector('.title').innerHTML).toContain('<p>2</p>');
+        expect(vm.$el.querySelector('.wiki').innerHTML).toContain('<p>42</p>');
+        expect(vm.$el.querySelector('.js-task-list-field').value).toContain('42');
 
         done();
       });

spec/javascripts/issue_show/components/description_spec.js

+import Vue from 'vue';
+import descriptionComponent from '~/issue_show/components/description.vue';
+
+describe('Description component', () => {
+  let vm;
+
+  beforeEach(() => {
+    const Component = Vue.extend(descriptionComponent);
+
+    if (!document.querySelector('.issuable-meta')) {
+      const metaData = document.createElement('div');
+      metaData.classList.add('issuable-meta');
+      metaData.innerHTML = '<span id="task_status"></span><span id="task_status_short"></span>';
+
+      document.body.appendChild(metaData);
+    }
+
+    vm = new Component({
+      propsData: {
+        canUpdate: true,
+        descriptionHtml: 'test',
+        descriptionText: 'test',
+        updatedAt: new Date().toString(),
+        taskStatus: '',
+      },
+    }).$mount();
+  });
+
+  it('animates description changes', (done) => {
+    vm.descriptionHtml = 'changed';
+
+    Vue.nextTick(() => {
+      expect(
+        vm.$el.querySelector('.wiki').classList.contains('issue-realtime-pre-pulse'),
+      ).toBeTruthy();
+
+      setTimeout(() => {
+        expect(
+          vm.$el.querySelector('.wiki').classList.contains('issue-realtime-trigger-pulse'),
+        ).toBeTruthy();
+
+        done();
+      });
+    });
+  });
+
+  it('re-inits the TaskList when description changed', (done) => {
+    spyOn(gl, 'TaskList');
+    vm.descriptionHtml = 'changed';
+
+    setTimeout(() => {
+      expect(
+        gl.TaskList,
+      ).toHaveBeenCalled();
+
+      done();
+    });
+  });
+
+  it('does not re-init the TaskList when canUpdate is false', (done) => {
+    spyOn(gl, 'TaskList');
+    vm.canUpdate = false;
+    vm.descriptionHtml = 'changed';
+
+    setTimeout(() => {
+      expect(
+        gl.TaskList,
+      ).not.toHaveBeenCalled();
+
+      done();
+    });
+  });
+
+  describe('taskStatus', () => {
+    it('adds full taskStatus', (done) => {
+      vm.taskStatus = '1 of 1';
+
+      setTimeout(() => {
+        expect(
+          document.querySelector('.issuable-meta #task_status').textContent.trim(),
+        ).toBe('1 of 1');
+
+        done();
+      });
+    });
+
+    it('adds short taskStatus', (done) => {
+      vm.taskStatus = '1 of 1';
+
+      setTimeout(() => {
+        expect(
+          document.querySelector('.issuable-meta #task_status_short').textContent.trim(),
+        ).toBe('1/1 task');
+
+        done();
+      });
+    });
+  });
+});

spec/javascripts/issue_show/components/title_spec.js

+import Vue from 'vue';
+import titleComponent from '~/issue_show/components/title.vue';
+
+describe('Title component', () => {
+  let vm;
+
+  beforeEach(() => {
+    const Component = Vue.extend(titleComponent);
+    vm = new Component({
+      propsData: {
+        issuableRef: '#1',
+        titleHtml: 'Testing <img />',
+        titleText: 'Testing',
+      },
+    }).$mount();
+  });
+
+  it('renders title HTML', () => {
+    expect(
+      vm.$el.innerHTML.trim(),
+    ).toBe('Testing <img>');
+  });
+
+  it('updates page title when changing titleHtml', (done) => {
+    spyOn(vm, 'setPageTitle');
+    vm.titleHtml = 'test';
+
+    Vue.nextTick(() => {
+      expect(
+        vm.setPageTitle,
+      ).toHaveBeenCalled();
+
+      done();
+    });
+  });
+
+  it('animates title changes', (done) => {
+    vm.titleHtml = 'test';
+
+    Vue.nextTick(() => {
+      expect(
+        vm.$el.classList.contains('issue-realtime-pre-pulse'),
+      ).toBeTruthy();
+
+      setTimeout(() => {
+        expect(
+          vm.$el.classList.contains('issue-realtime-trigger-pulse'),
+        ).toBeTruthy();
+
+        done();
+      });
+    });
+  });
+
+  it('updates page title after changing title', (done) => {
+    vm.titleHtml = 'changed';
+    vm.titleText = 'changed';
+
+    Vue.nextTick(() => {
+      expect(
+        document.querySelector('title').textContent.trim(),
+      ).toContain('changed');
+
+      done();
+    });
+  });
+});

spec/javascripts/issue_show/mock_data.js

@@ -4,23 +4,23 @@ export default {
     title_text: 'this is a title',
     description: '<p>this is a description!</p>',
     description_text: 'this is a description',
-    issue_number: 1,
     task_status: '2 of 4 completed',
+    updated_at: new Date().toString(),
   },
   secondRequest: {
     title: '<p>2</p>',
     title_text: '2',
     description: '<p>42</p>',
     description_text: '42',
-    issue_number: 1,
     task_status: '0 of 0 completed',
+    updated_at: new Date().toString(),
   },
   issueSpecRequest: {
     title: '<p>this is a title</p>',
     title_text: 'this is a title',
     description: '<li class="task-list-item enabled"><input type="checkbox" class="task-list-item-checkbox">Task List Item</li>',
     description_text: '- [ ] Task List Item',
-    issue_number: 1,
     task_status: '0 of 1 completed',
+    updated_at: new Date().toString(),
   },
 };