Convert Jest tests to use VTU in 'spec/frontend/notes/components'

app/assets/javascripts/notes/components/discussion_filter_note.vue

@@ -38,12 +38,12 @@ export default {
       <icon name="comment" />
     </div>
     <div class="timeline-content">
-      <div v-html="timelineContent"></div>
+      <div ref="timelineContent" v-html="timelineContent"></div>
       <div class="discussion-filter-actions mt-2">
-        <gl-button variant="default" @click="selectFilter(0)">
+        <gl-button ref="showAllActivity" variant="default" @click="selectFilter(0)">
           {{ __('Show all activity') }}
         </gl-button>
-        <gl-button variant="default" @click="selectFilter(1)">
+        <gl-button ref="showComments" variant="default" @click="selectFilter(1)">
           {{ __('Show comments only') }}
         </gl-button>
       </div>

app/assets/javascripts/notes/components/note_attachment.vue

@@ -12,11 +12,23 @@ export default {
 
 <template>
   <div class="note-attachment">
-    <a v-if="attachment.image" :href="attachment.url" target="_blank" rel="noopener noreferrer">
+    <a
+      v-if="attachment.image"
+      ref="attachmentImage"
+      :href="attachment.url"
+      target="_blank"
+      rel="noopener noreferrer"
+    >
       <img :src="attachment.url" class="note-image-attach" />
     </a>
     <div class="attachment">
-      <a v-if="attachment.url" :href="attachment.url" target="_blank" rel="noopener noreferrer">
+      <a
+        v-if="attachment.url"
+        ref="attachmentUrl"
+        :href="attachment.url"
+        target="_blank"
+        rel="noopener noreferrer"
+      >
         <i class="fa fa-paperclip" aria-hidden="true"> </i> {{ attachment.filename }}
       </a>
     </div>

app/assets/javascripts/notes/components/note_header.vue

@@ -63,13 +63,13 @@ export default {
 
 <template>
   <div class="note-header-info">
-    <div v-if="includeToggle" class="discussion-actions">
+    <div v-if="includeToggle" ref="discussionActions" class="discussion-actions">
       <button
         class="note-action-button discussion-toggle-button js-vue-toggle-button"
         type="button"
         @click="handleToggle"
       >
-        <i :class="toggleChevronClass" class="fa" aria-hidden="true"></i>
+        <i ref="chevronIcon" :class="toggleChevronClass" class="fa" aria-hidden="true"></i>
         {{ __('Toggle thread') }}
       </button>
     </div>
@@ -90,10 +90,11 @@ export default {
     <span class="note-headline-light note-headline-meta">
       <span class="system-note-message"> <slot></slot> </span>
       <template v-if="createdAt">
-        <span class="system-note-separator">
+        <span ref="actionText" class="system-note-separator">
           <template v-if="actionText">{{ actionText }}</template>
         </span>
         <a
+          ref="noteTimestamp"
           :href="noteTimestampLink"
           class="note-timestamp system-note-separator"
           @click="updateTargetNoteHash"

spec/frontend/notes/components/discussion_filter_note_spec.js

-import Vue from 'vue';
+import { shallowMount } from '@vue/test-utils';
 import DiscussionFilterNote from '~/notes/components/discussion_filter_note.vue';
 import eventHub from '~/notes/event_hub';
 
-import mountComponent from '../../helpers/vue_mount_component_helper';
-
 describe('DiscussionFilterNote component', () => {
-  let vm;
+  let wrapper;
 
   const createComponent = () => {
-    const Component = Vue.extend(DiscussionFilterNote);
-
-    return mountComponent(Component);
+    wrapper = shallowMount(DiscussionFilterNote);
   };
 
   beforeEach(() => {
-    vm = createComponent();
+    createComponent();
   });
 
   afterEach(() => {
-    vm.$destroy();
+    wrapper.destroy();
+    wrapper = null;
   });
 
-  describe('computed', () => {
-    describe('timelineContent', () => {
-      it('returns string containing instruction for switching feed type', () => {
-        expect(vm.timelineContent).toBe(
-          "You're only seeing <b>other activity</b> in the feed. To add a comment, switch to one of the following options.",
-        );
-      });
-    });
+  it('timelineContent renders a string containing instruction for switching feed type', () => {
+    expect(wrapper.find({ ref: 'timelineContent' }).html()).toBe(
+      "<div>You're only seeing <b>other activity</b> in the feed. To add a comment, switch to one of the following options.</div>",
+    );
   });
 
-  describe('methods', () => {
-    describe('selectFilter', () => {
-      it('emits `dropdownSelect` event on `eventHub` with provided param', () => {
-        jest.spyOn(eventHub, '$emit').mockImplementation(() => {});
+  it('emits `dropdownSelect` event with 0 parameter on clicking Show all activity button', () => {
+    jest.spyOn(eventHub, '$emit').mockImplementation(() => {});
+    wrapper.find({ ref: 'showAllActivity' }).vm.$emit('click');
 
-        vm.selectFilter(1);
-
-        expect(eventHub.$emit).toHaveBeenCalledWith('dropdownSelect', 1);
-      });
-    });
+    expect(eventHub.$emit).toHaveBeenCalledWith('dropdownSelect', 0);
   });
 
-  describe('template', () => {
-    it('renders component container element', () => {
-      expect(vm.$el.classList.contains('discussion-filter-note')).toBe(true);
-    });
-
-    it('renders comment icon element', () => {
-      expect(vm.$el.querySelector('.timeline-icon svg use').getAttribute('xlink:href')).toContain(
-        'comment',
-      );
-    });
-
-    it('renders filter information note', () => {
-      expect(vm.$el.querySelector('.timeline-content').innerText.trim()).toContain(
-        "You're only seeing other activity in the feed. To add a comment, switch to one of the following options.",
-      );
-    });
-
-    it('renders filter buttons', () => {
-      const buttonsContainerEl = vm.$el.querySelector('.discussion-filter-actions');
-
-      expect(buttonsContainerEl.querySelector('button:first-child').innerText.trim()).toContain(
-        'Show all activity',
-      );
-
-      expect(buttonsContainerEl.querySelector('button:last-child').innerText.trim()).toContain(
-        'Show comments only',
-      );
-    });
-
-    it('clicking `Show all activity` button calls `selectFilter("all")` method', () => {
-      const showAllBtn = vm.$el.querySelector('.discussion-filter-actions button:first-child');
-      jest.spyOn(vm, 'selectFilter').mockImplementation(() => {});
-
-      showAllBtn.dispatchEvent(new Event('click'));
-
-      expect(vm.selectFilter).toHaveBeenCalledWith(0);
-    });
-
-    it('clicking `Show comments only` button calls `selectFilter("comments")` method', () => {
-      const showAllBtn = vm.$el.querySelector('.discussion-filter-actions button:last-child');
-      jest.spyOn(vm, 'selectFilter').mockImplementation(() => {});
-
-      showAllBtn.dispatchEvent(new Event('click'));
+  it('emits `dropdownSelect` event with 1 parameter on clicking Show comments only button', () => {
+    jest.spyOn(eventHub, '$emit').mockImplementation(() => {});
+    wrapper.find({ ref: 'showComments' }).vm.$emit('click');
 
-      expect(vm.selectFilter).toHaveBeenCalledWith(1);
-    });
+    expect(eventHub.$emit).toHaveBeenCalledWith('dropdownSelect', 1);
   });
 });

spec/frontend/notes/components/note_attachment_spec.js

-import Vue from 'vue';
-import noteAttachment from '~/notes/components/note_attachment.vue';
-
-describe('issue note attachment', () => {
-  it('should render properly', () => {
-    const props = {
-      attachment: {
-        filename: 'dk.png',
-        image: true,
-        url: '/dk.png',
+import { shallowMount } from '@vue/test-utils';
+import NoteAttachment from '~/notes/components/note_attachment.vue';
+
+describe('Issue note attachment', () => {
+  let wrapper;
+
+  const findImage = () => wrapper.find({ ref: 'attachmentImage' });
+  const findUrl = () => wrapper.find({ ref: 'attachmentUrl' });
+
+  const createComponent = attachment => {
+    wrapper = shallowMount(NoteAttachment, {
+      propsData: {
+        attachment,
       },
-    };
+    });
+  };
+
+  afterEach(() => {
+    wrapper.destroy();
+    wrapper = null;
+  });
+
+  it('renders attachment image if it is passed in attachment prop', () => {
+    createComponent({
+      image: 'test-image',
+    });
+
+    expect(findImage().exists()).toBe(true);
+  });
+
+  it('renders attachment url if it is passed in attachment prop', () => {
+    createComponent({
+      url: 'test-url',
+    });
+
+    expect(findUrl().exists()).toBe(true);
+  });
 
-    const Component = Vue.extend(noteAttachment);
-    const vm = new Component({
-      propsData: props,
-    }).$mount();
+  it('does not render image and url if attachment object is empty', () => {
+    createComponent({});
 
-    expect(vm.$el.classList.contains('note-attachment')).toBeTruthy();
-    expect(vm.$el.querySelector('img').src).toContain(props.attachment.url);
-    expect(vm.$el.querySelector('a').href).toContain(props.attachment.url);
+    expect(findImage().exists()).toBe(false);
+    expect(findUrl().exists()).toBe(false);
   });
 });

spec/frontend/notes/components/note_header_spec.js

-import Vue from 'vue';
-import noteHeader from '~/notes/components/note_header.vue';
-import createStore from '~/notes/stores';
-
-describe('note_header component', () => {
-  let store;
-  let vm;
-  let Component;
-
-  beforeEach(() => {
-    Component = Vue.extend(noteHeader);
-    store = createStore();
-  });
+import { shallowMount, createLocalVue } from '@vue/test-utils';
+import Vuex from 'vuex';
+import NoteHeader from '~/notes/components/note_header.vue';
+
+const localVue = createLocalVue();
+localVue.use(Vuex);
+
+const actions = {
+  setTargetNoteHash: jest.fn(),
+};
+
+describe('NoteHeader component', () => {
+  let wrapper;
+
+  const findActionsWrapper = () => wrapper.find({ ref: 'discussionActions' });
+  const findChevronIcon = () => wrapper.find({ ref: 'chevronIcon' });
+  const findActionText = () => wrapper.find({ ref: 'actionText' });
+  const findTimestamp = () => wrapper.find({ ref: 'noteTimestamp' });
+
+  const createComponent = props => {
+    wrapper = shallowMount(NoteHeader, {
+      localVue,
+      store: new Vuex.Store({
+        actions,
+      }),
+      propsData: {
+        ...props,
+        actionTextHtml: '',
+        noteId: '1394',
+      },
+    });
+  };
 
   afterEach(() => {
-    vm.$destroy();
+    wrapper.destroy();
+    wrapper = null;
   });
 
-  describe('individual note', () => {
-    beforeEach(() => {
-      vm = new Component({
-        store,
-        propsData: {
-          actionText: 'commented',
-          actionTextHtml: '',
-          author: {
-            avatar_url: null,
-            id: 1,
-            name: 'Root',
-            path: '/root',
-            state: 'active',
-            username: 'root',
-          },
-          createdAt: '2017-08-02T10:51:58.559Z',
-          includeToggle: false,
-          noteId: '1394',
-          expanded: true,
-        },
-      }).$mount();
+  it('does not render discussion actions when includeToggle is false', () => {
+    createComponent({
+      includeToggle: false,
     });
 
-    it('should render user information', () => {
-      expect(vm.$el.querySelector('.note-header-author-name').textContent.trim()).toEqual('Root');
-      expect(vm.$el.querySelector('.note-header-info a').getAttribute('href')).toEqual('/root');
-      expect(vm.$el.querySelector('.note-header-info a').dataset.userId).toEqual('1');
-      expect(vm.$el.querySelector('.note-header-info a').dataset.username).toEqual('root');
-      expect(vm.$el.querySelector('.note-header-info a').classList).toContain('js-user-link');
+    expect(findActionsWrapper().exists()).toBe(false);
+  });
+
+  describe('when includes a toggle', () => {
+    it('renders discussion actions', () => {
+      createComponent({
+        includeToggle: true,
+      });
+
+      expect(findActionsWrapper().exists()).toBe(true);
     });
 
-    it('should render timestamp link', () => {
-      expect(vm.$el.querySelector('a[href="#note_1394"]')).toBeDefined();
+    it('emits toggleHandler event on button click', () => {
+      createComponent({
+        includeToggle: true,
+      });
+
+      wrapper.find('.note-action-button').trigger('click');
+      expect(wrapper.emitted('toggleHandler')).toBeDefined();
+      expect(wrapper.emitted('toggleHandler')).toHaveLength(1);
     });
 
-    it('should not render user information when prop `author` is empty object', done => {
-      vm.author = {};
-      Vue.nextTick()
-        .then(() => {
-          expect(vm.$el.querySelector('.note-header-author-name')).toBeNull();
-        })
-        .then(done)
-        .catch(done.fail);
+    it('has chevron-up icon if expanded prop is true', () => {
+      createComponent({
+        includeToggle: true,
+        expanded: true,
+      });
+
+      expect(findChevronIcon().classes()).toContain('fa-chevron-up');
     });
-  });
 
-  describe('discussion', () => {
-    beforeEach(() => {
-      vm = new Component({
-        store,
-        propsData: {
-          actionText: 'started a discussion',
-          actionTextHtml: '',
-          author: {
-            avatar_url: null,
-            id: 1,
-            name: 'Root',
-            path: '/root',
-            state: 'active',
-            username: 'root',
-          },
-          createdAt: '2017-08-02T10:51:58.559Z',
-          includeToggle: true,
-          noteId: '1395',
-          expanded: true,
-        },
-      }).$mount();
+    it('has chevron-down icon if expanded prop is false', () => {
+      createComponent({
+        includeToggle: true,
+        expanded: false,
+      });
+
+      expect(findChevronIcon().classes()).toContain('fa-chevron-down');
     });
+  });
 
-    it('should render toggle button', () => {
-      expect(vm.$el.querySelector('.js-vue-toggle-button')).toBeDefined();
+  it('renders an author link if author is passed to props', () => {
+    createComponent({
+      author: {
+        avatar_url: null,
+        id: 1,
+        name: 'Root',
+        path: '/root',
+        state: 'active',
+        username: 'root',
+      },
     });
 
-    it('emits toggle event on click', done => {
-      jest.spyOn(vm, '$emit').mockImplementation(() => {});
+    expect(wrapper.find('.js-user-link').exists()).toBe(true);
+  });
 
-      vm.$el.querySelector('.js-vue-toggle-button').click();
+  it('renders deleted user text if author is not passed as a prop', () => {
+    createComponent();
 
-      Vue.nextTick(() => {
-        expect(vm.$emit).toHaveBeenCalledWith('toggleHandler');
-        done();
-      });
-    });
+    expect(wrapper.text()).toContain('A deleted user');
+  });
+
+  it('does not render created at information if createdAt is not passed as a prop', () => {
+    createComponent();
 
-    it('renders up arrow when open', done => {
-      vm.expanded = true;
+    expect(findActionText().exists()).toBe(false);
+    expect(findTimestamp().exists()).toBe(false);
+  });
 
-      Vue.nextTick(() => {
-        expect(vm.$el.querySelector('.js-vue-toggle-button i').classList).toContain(
-          'fa-chevron-up',
-        );
-        done();
+  describe('when createdAt is passed as a prop', () => {
+    it('renders action text and a timestamp', () => {
+      createComponent({
+        createdAt: '2017-08-02T10:51:58.559Z',
       });
+
+      expect(findActionText().exists()).toBe(true);
+      expect(findTimestamp().exists()).toBe(true);
     });
 
-    it('renders down arrow when closed', done => {
-      vm.expanded = false;
+    it('renders correct actionText if passed', () => {
+      createComponent({
+        createdAt: '2017-08-02T10:51:58.559Z',
+        actionText: 'Test action text',
+      });
+
+      expect(findActionText().text()).toBe('Test action text');
+    });
 
-      Vue.nextTick(() => {
-        expect(vm.$el.querySelector('.js-vue-toggle-button i').classList).toContain(
-          'fa-chevron-down',
-        );
-        done();
+    it('calls an action when timestamp is clicked', () => {
+      createComponent({
+        createdAt: '2017-08-02T10:51:58.559Z',
       });
+      findTimestamp().trigger('click');
+
+      expect(actions.setTargetNoteHash).toHaveBeenCalled();
     });
   });
 });