Replace all instances of underscore to lodash in ee/spec

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

 <script>
-import _ from 'underscore';
+import { delay } from 'lodash';
 
 import epicItemDetails from './epic_item_details.vue';
 import epicItemTimeline from './epic_item_timeline.vue';
@@ -78,7 +78,7 @@ export default {
     removeHighlight() {
       if (this.epic.newEpic) {
         this.$nextTick(() => {
-          _.delay(() => {
+          delay(() => {
             this.epic.newEpic = false;
           }, EPIC_HIGHLIGHT_REMOVE_AFTER);
         });

ee/spec/frontend/analytics/cycle_analytics/mock_data.js

-import { uniq } from 'underscore';
+import { uniq } from 'lodash';
 import { TEST_HOST } from 'helpers/test_constants';
 import { getJSONFixture } from 'helpers/fixtures';
 import mutations from 'ee/analytics/cycle_analytics/store/mutations';

ee/spec/frontend/analytics/cycle_analytics/utils_spec.js

-import { isNumber } from 'underscore';
+import { isNumber } from 'lodash';
 import { getDatesInRange } from '~/lib/utils/datetime_utility';
 import {
   isStartEvent,

ee/spec/frontend/feature_flags/components/form_spec.js

-import _ from 'underscore';
+import { uniqueId } from 'lodash';
 import { shallowMount } from '@vue/test-utils';
 import { GlFormTextarea, GlFormCheckbox, GlDeprecatedButton } from '@gitlab/ui';
 import Form from 'ee/feature_flags/components/form.vue';
@@ -156,7 +156,7 @@ describe('feature flag form', () => {
           it('should update the scope', () => {
             wrapper.find(ToggleButton).vm.$emit('change', false);
 
-            expect(_.first(wrapper.vm.formScopes).active).toBe(false);
+            expect(wrapper.vm.formScopes[0].active).toBe(false);
           });
 
           it('should be disabled if the feature flag is not active', done => {
@@ -185,7 +185,7 @@ describe('feature flag form', () => {
         });
 
         it('should add `shouldBeDestroyed` key the clicked scope', () => {
-          expect(_.first(wrapper.vm.formScopes).shouldBeDestroyed).toBe(true);
+          expect(wrapper.vm.formScopes[0].shouldBeDestroyed).toBe(true);
         });
 
         it('should not render deleted scopes', () => {
@@ -203,7 +203,7 @@ describe('feature flag form', () => {
               {
                 environmentScope: 'new_scope',
                 active: false,
-                id: _.uniqueId(INTERNAL_ID_PREFIX),
+                id: uniqueId(INTERNAL_ID_PREFIX),
                 canUpdate: true,
                 protected: false,
                 strategies: [

ee/spec/frontend/feature_flags/store/helpers_spec.js

-import _ from 'underscore';
+import { uniqueId } from 'lodash';
 import {
   mapToScopesViewModel,
   mapFromScopesViewModel,
@@ -214,7 +214,7 @@ describe('feature flags helpers spec', () => {
 
     it('should strip out internal IDs', () => {
       const input = {
-        scopes: [{ id: 3 }, { id: _.uniqueId(INTERNAL_ID_PREFIX) }],
+        scopes: [{ id: 3 }, { id: uniqueId(INTERNAL_ID_PREFIX) }],
       };
 
       const result = mapFromScopesViewModel(input);
@@ -380,16 +380,14 @@ describe('feature flags helpers spec', () => {
     });
 
     it('inserts spaces between user ids', () => {
-      const strategy = _.first(
-        mapStrategiesToViewModel([
-          {
-            id: '1',
-            name: 'userWithId',
-            parameters: { userIds: 'user1,user2,user3' },
-            scopes: [],
-          },
-        ]),
-      );
+      const strategy = mapStrategiesToViewModel([
+        {
+          id: '1',
+          name: 'userWithId',
+          parameters: { userIds: 'user1,user2,user3' },
+          scopes: [],
+        },
+      ])[0];
 
       expect(strategy.parameters).toEqual({ userIds: 'user1, user2, user3' });
     });
@@ -492,7 +490,7 @@ describe('feature flags helpers spec', () => {
         ],
       });
 
-      const strategyAttrs = _.first(result.operations_feature_flag.strategies_attributes);
+      const strategyAttrs = result.operations_feature_flag.strategies_attributes[0];
 
       expect(strategyAttrs.parameters).toEqual({ userIds: 'user1,user2,user3' });
     });

ee/spec/frontend/ide/stores/modules/terminal/messages_spec.js

-import _ from 'underscore';
+import { escape as esc } from 'lodash';
 import { TEST_HOST } from 'spec/test_constants';
 import * as messages from 'ee/ide/stores/modules/terminal/messages';
 import { sprintf } from '~/locale';
@@ -15,7 +15,7 @@ describe('EE IDE store terminal messages', () => {
         sprintf(
           messages.ERROR_CONFIG,
           {
-            helpStart: `<a href="${_.escape(TEST_HELP_URL)}" target="_blank">`,
+            helpStart: `<a href="${esc(TEST_HELP_URL)}" target="_blank">`,
             helpEnd: '</a>',
           },
           false,

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

 import Vue from 'vue';
 
-import _ from 'underscore';
+import _ from 'lodash';
 
 import epicItemComponent from 'ee/roadmap/components/epic_item.vue';
 
@@ -11,6 +11,14 @@ import { PRESET_TYPES } from 'ee/roadmap/constants';
 import mountComponent from 'helpers/vue_mount_component_helper';
 import { mockTimeframeInitialDate, mockEpic, mockGroupId } from 'ee_jest/roadmap/mock_data';
 
+jest.mock('lodash/delay', () =>
+  jest.fn(func => {
+    // eslint-disable-next-line no-param-reassign
+    func.delay = jest.fn();
+    return func;
+  }),
+);
+
 const mockTimeframeMonths = getTimeframeForMonthsView(mockTimeframeInitialDate);
 
 const createComponent = ({
@@ -111,8 +119,6 @@ describe('EpicItemComponent', () => {
   describe('methods', () => {
     describe('removeHighlight', () => {
       it('should call _.delay after 3 seconds with a callback function which would set `epic.newEpic` to false when it is true already', done => {
-        jest.spyOn(_, 'delay').mockImplementation(() => {});
-
         vm.epic.newEpic = true;
 
         vm.removeHighlight();

ee/spec/frontend/vue_mr_widget/components/approvals/approvals_footer_spec.js

-import _ from 'underscore';
 import { shallowMount } from '@vue/test-utils';
 import { GlDeprecatedButton, GlLoadingIcon } from '@gitlab/ui';
 import ApprovalsList from 'ee/vue_merge_request_widget/components/approvals/approvals_list.vue';
@@ -6,7 +5,7 @@ import ApprovalsFooter from 'ee/vue_merge_request_widget/components/approvals/ap
 import Icon from '~/vue_shared/components/icon.vue';
 import UserAvatarList from '~/vue_shared/components/user_avatar/user_avatar_list.vue';
 
-const testSuggestedApprovers = () => _.range(1, 11).map(id => ({ id }));
+const testSuggestedApprovers = () => Array.from({ length: 11 }, (_, i) => i).map(id => ({ id }));
 const testApprovalRules = () => [{ name: 'Lorem' }, { name: 'Ipsum' }];
 
 describe('EE MRWidget approvals footer', () => {

ee/spec/frontend/vue_mr_widget/components/approvals/approvals_list_spec.js

 import { shallowMount } from '@vue/test-utils';
-import _ from 'underscore';
 import ApprovedIcon from 'ee/vue_merge_request_widget/components/approvals/approved_icon.vue';
 import ApprovalsList from 'ee/vue_merge_request_widget/components/approvals/approvals_list.vue';
 import UserAvatarList from '~/vue_shared/components/user_avatar/user_avatar_list.vue';
 
-const testApprovers = () => _.range(1, 11).map(id => ({ id }));
+const testApprovers = () => Array.from({ length: 11 }, (_, i) => i).map(id => ({ id }));
 const testRuleApproved = () => ({
   id: 1,
   name: 'Lorem',

ee/spec/frontend/vue_mr_widget/components/approvals/approvals_summary_spec.js

 import { shallowMount } from '@vue/test-utils';
-import _ from 'underscore';
 import { APPROVED_MESSAGE } from 'ee/vue_merge_request_widget/components/approvals/messages';
 import ApprovalsSummary from 'ee/vue_merge_request_widget/components/approvals/approvals_summary.vue';
 import { toNounSeriesText } from '~/lib/utils/grammar';
 import UserAvatarList from '~/vue_shared/components/user_avatar/user_avatar_list.vue';
 
-const testApprovers = () => _.range(1, 5).map(id => ({ id }));
+const testApprovers = () => Array.from({ length: 5 }, (_, i) => i).map(id => ({ id }));
 const testRulesLeft = () => ['Lorem', 'Ipsum', 'dolar sit'];
 const TEST_APPROVALS_LEFT = 3;
 

ee/spec/frontend/vue_shared/components/accordion/accordion_item_spec.js

 import { shallowMount } from '@vue/test-utils';
-
+import { uniqueId } from 'lodash';
 import { AccordionItem } from 'ee/vue_shared/components/accordion';
 import accordionEventBus from 'ee/vue_shared/components/accordion/accordion_event_bus';
-import { uniqueId } from 'lodash';
 
 jest.mock('ee/vue_shared/components/accordion/accordion_event_bus', () => ({
   $on: jest.fn(),