Remove unused skeleton loader and css class

The skeleton loader is no longer necessary in roadmap_shell.vue
as the empty state/loading is covered in roadmap_app.vue.

`.roadmap-shell` can be removed by using gl- utility classes.

ee/app/assets/javascripts/roadmap/components/epic_item_timeline.vue

@@ -165,7 +165,7 @@ export default {
 <template>
   <span class="epic-timeline-cell" data-qa-selector="epic_timeline_cell">
     <current-day-indicator :preset-type="presetType" :timeframe-item="timeframeItem" />
-    <div class="epic-bar-wrapper">
+    <div class="gl-relative">
       <a
         v-if="hasStartDate"
         :id="generateKey(epic)"

ee/app/assets/javascripts/roadmap/components/roadmap_shell.vue

 <script>
 import { mapState } from 'vuex';
-import { GlDeprecatedSkeletonLoading as GlSkeletonLoading } from '@gitlab/ui';
 
 import { isInViewport } from '~/lib/utils/common_utils';
 import { EXTEND_AS } from '../constants';
@@ -12,7 +11,6 @@ import roadmapTimelineSection from './roadmap_timeline_section.vue';
 
 export default {
   components: {
-    GlSkeletonLoading,
     epicsListSection,
     milestonesListSection,
     roadmapTimelineSection,
@@ -92,7 +90,7 @@ export default {
 
 <template>
   <div
-    class="roadmap-shell js-roadmap-shell"
+    class="js-roadmap-shell gl-relative gl-h-full gl-w-full gl-overflow-x-auto"
     data-qa-selector="roadmap_shell"
     @scroll="handleScroll"
   >
@@ -109,13 +107,7 @@ export default {
       :timeframe="timeframe"
       :current-group-id="currentGroupId"
     />
-    <div v-if="!epics.length" class="skeleton-loader js-skeleton-loader">
-      <div v-for="n in 10" :key="n" class="mt-2">
-        <gl-skeleton-loading :lines="2" />
-      </div>
-    </div>
     <epics-list-section
-      v-else
       :preset-type="presetType"
       :epics="epics"
       :timeframe="timeframe"

ee/app/assets/stylesheets/page_bundles/roadmap.scss

@@ -123,31 +123,6 @@ html.group-epics-roadmap-html {
   }
 }
 
-.roadmap-shell {
-  position: relative;
-  height: 100%;
-  width: 100%;
-  overflow-x: auto;
-
-  .skeleton-loader {
-    position: absolute;
-    top: $header-item-height;
-    width: $details-cell-width;
-    height: 100%;
-    padding-top: $gl-padding-top;
-    padding-left: $gl-padding;
-    z-index: 4;
-
-    &::after {
-      height: 100%;
-    }
-  }
-
-  &.prevent-vertical-scroll {
-    overflow-y: hidden;
-  }
-}
-
 .roadmap-timeline-section .timeline-header-blank::after,
 .epics-list-section .epic-details-cell::after,
 .milestones-list-section .milestones-list-title::after,
@@ -324,10 +299,6 @@ html.group-epics-roadmap-html {
   }
 }
 
-.epic-bar-wrapper {
-  position: relative;
-}
-
 .epic-bar {
   position: absolute;
   top: 5px;

ee/spec/features/epics/epic_show_spec.rb

@@ -67,9 +67,9 @@ RSpec.describe 'Epic show', :js do
 
       it 'shows Roadmap timeline with child epics' do
         page.within('.js-epic-tabs-content #roadmap') do
-          expect(page).to have_selector('.roadmap-container .roadmap-shell')
+          expect(page).to have_selector('.roadmap-container .js-roadmap-shell')
 
-          page.within('.roadmap-shell .epics-list-section') do
+          page.within('.js-roadmap-shell .epics-list-section') do
             expect(page).not_to have_content(not_child.title)
             expect(find('.epic-item-container:nth-child(1) .epics-list-item .epic-title')).to have_content('Child epic B')
             expect(find('.epic-item-container:nth-child(2) .epics-list-item .epic-title')).to have_content('Child epic A')

ee/spec/frontend/roadmap/components/epic_item_spec.js

@@ -99,7 +99,7 @@ describe('EpicItemComponent', () => {
 
   describe('timeframeString', () => {
     it('returns timeframe string correctly when both start and end dates are defined', () => {
-      expect(wrapper.vm.timeframeString(mockEpic)).toBe('Jul 10, 2017 – Jun 2, 2018');
+      expect(wrapper.vm.timeframeString(mockEpic)).toBe('Nov 10, 2017 – Jun 2, 2018');
     });
 
     it('returns timeframe string correctly when no dates are defined', () => {
@@ -113,7 +113,7 @@ describe('EpicItemComponent', () => {
       const epic = { ...mockEpic, endDateUndefined: true };
       wrapper = createComponent({ epic });
 
-      expect(wrapper.vm.timeframeString(epic)).toBe('Jul 10, 2017 – No end date');
+      expect(wrapper.vm.timeframeString(epic)).toBe('Nov 10, 2017 – No end date');
     });
 
     it('returns timeframe string correctly when only end date is defined', () => {

ee/spec/frontend/roadmap/components/roadmap_shell_spec.js

-import Vue from 'vue';
+import Vuex from 'vuex';
+import { mount, createLocalVue } from '@vue/test-utils';
 
-import roadmapShellComponent from 'ee/roadmap/components/roadmap_shell.vue';
+import RoadmapShell from 'ee/roadmap/components/roadmap_shell.vue';
 import { PRESET_TYPES } from 'ee/roadmap/constants';
 import eventHub from 'ee/roadmap/event_hub';
 import createStore from 'ee/roadmap/store';
@@ -12,33 +13,39 @@ import {
   mockGroupId,
   mockMilestone,
 } from 'ee_jest/roadmap/mock_data';
-import { mountComponentWithStore } from 'helpers/vue_mount_component_helper';
 
 const mockTimeframeMonths = getTimeframeForMonthsView(mockTimeframeInitialDate);
 
-const createComponent = (
+describe('RoadmapShell', () => {
+  const localVue = createLocalVue();
+  localVue.use(Vuex);
+
+  let store;
+  let wrapper;
+
+  const storeFactory = ({ defaultInnerHeight = 0 }) => {
+    store = createStore();
+    store.dispatch('setInitialData', {
+      defaultInnerHeight,
+      childrenFlags: { '1': { itemExpanded: false } },
+    });
+  };
+
+  const createComponent = (
     {
       epics = [mockEpic],
       milestones = [mockMilestone],
       timeframe = mockTimeframeMonths,
       currentGroupId = mockGroupId,
-    defaultInnerHeight = 0,
       hasFiltersApplied = false,
     },
     el,
-) => {
-  const Component = Vue.extend(roadmapShellComponent);
-
-  const store = createStore();
-  store.dispatch('setInitialData', {
-    defaultInnerHeight,
-    childrenFlags: { '1': { itemExpanded: false } },
-  });
-
-  return mountComponentWithStore(Component, {
-    el,
+  ) => {
+    wrapper = mount(RoadmapShell, {
+      localVue,
       store,
-    props: {
+      attachTo: el,
+      propsData: {
         presetType: PRESET_TYPES.MONTHS,
         epics,
         milestones,
@@ -47,30 +54,30 @@ const createComponent = (
         hasFiltersApplied,
       },
     });
-};
-
-describe('RoadmapShellComponent', () => {
-  let vm;
+  };
 
-  beforeEach(done => {
-    vm = createComponent({});
-    vm.$nextTick(done);
+  beforeEach(() => {
+    storeFactory({});
+    createComponent({});
   });
 
   afterEach(() => {
-    vm.$destroy();
+    wrapper.destroy();
+    wrapper = null;
+    store = null;
   });
 
   describe('data', () => {
     it('returns default data props', () => {
-      expect(vm.timeframeStartOffset).toBe(0);
+      expect(wrapper.vm.timeframeStartOffset).toBe(0);
     });
   });
 
   describe('methods', () => {
     beforeEach(() => {
       document.body.innerHTML +=
-        '<div class="roadmap-container"><div id="roadmap-shell"></div></div>';
+        '<div class="roadmap-container"><div data-testid="roadmap-shell"></div></div>';
+      createComponent({}, document.querySelector('[data-testid="roadmap-shell"]'));
     });
 
     afterEach(() => {
@@ -78,38 +85,20 @@ describe('RoadmapShellComponent', () => {
     });
 
     describe('handleScroll', () => {
-      it('emits `epicsListScrolled` event via eventHub', done => {
-        const vmWithParentEl = createComponent({}, document.getElementById('roadmap-shell'));
+      it('emits `epicsListScrolled` event via eventHub', async () => {
         jest.spyOn(eventHub, '$emit').mockImplementation(() => {});
 
-        Vue.nextTick()
-          .then(() => {
-            vmWithParentEl.handleScroll();
+        await wrapper.vm.$nextTick();
+        wrapper.vm.handleScroll();
 
         expect(eventHub.$emit).toHaveBeenCalledWith('epicsListScrolled', expect.any(Object));
-
-            vmWithParentEl.$destroy();
-          })
-          .then(done)
-          .catch(done.fail);
       });
     });
   });
 
   describe('template', () => {
-    it('renders component container element with class `roadmap-shell`', () => {
-      expect(vm.$el.classList.contains('roadmap-shell')).toBe(true);
-    });
-
-    it('renders skeleton loader element when Epics list is empty', done => {
-      vm.epics = [];
-
-      vm.$nextTick()
-        .then(() => {
-          expect(vm.$el.querySelector('.js-skeleton-loader')).not.toBeNull();
-        })
-        .then(done)
-        .catch(done.fail);
+    it('renders component container element with class `js-roadmap-shell`', () => {
+      expect(wrapper.find('.js-roadmap-shell').exists()).toBe(true);
     });
   });
 });

ee/spec/frontend/roadmap/mock_data.js

@@ -104,8 +104,8 @@ export const mockEpic = {
   groupId: 2,
   groupName: 'Gitlab Org',
   groupFullName: 'Gitlab Org',
-  startDate: new Date('2017-07-10'),
-  originalStartDate: new Date('2017-07-10'),
+  startDate: new Date('2017-11-10'),
+  originalStartDate: new Date('2017-11-10'),
   endDate: new Date('2018-06-02'),
   webUrl: '/groups/gitlab-org/-/epics/1',
   descendantCounts: {