Migrate issue_show application specs to jest

As part of the transition from Karma to jest,
migrate all issue show application specs
implemented in Karma to jest.

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

@@ -329,7 +329,7 @@ export default {
     },
 
     deleteIssuable(payload) {
-      this.service
+      return this.service
         .deleteIssuable(payload)
         .then(res => res.data)
         .then(data => {
@@ -365,7 +365,12 @@ export default {
         :issuable-type="issuableType"
       />
 
-      <recaptcha-modal v-show="showRecaptcha" :html="recaptchaHTML" @close="closeRecaptchaModal" />
+      <recaptcha-modal
+        v-show="showRecaptcha"
+        ref="recaptchaModal"
+        :html="recaptchaHTML"
+        @close="closeRecaptchaModal"
+      />
     </div>
     <div v-else>
       <title-component

spec/javascripts/issue_show/components/description_spec.js → spec/frontend/issue_show/components/description_spec.js

 import $ from 'jquery';
 import Vue from 'vue';
 import '~/behaviors/markdown/render_gfm';
-import mountComponent from 'spec/helpers/vue_mount_component_helper';
+import mountComponent from 'helpers/vue_mount_component_helper';
+import { TEST_HOST } from 'helpers/test_constants';
 import Description from '~/issue_show/components/description.vue';
+import TaskList from '~/task_list';
+
+jest.mock('~/task_list');
 
 describe('Description component', () => {
   let vm;
@@ -13,7 +17,7 @@ describe('Description component', () => {
     descriptionText: 'test',
     updatedAt: new Date().toString(),
     taskStatus: '',
-    updateUrl: gl.TEST_HOST,
+    updateUrl: TEST_HOST,
   };
 
   beforeEach(() => {
@@ -39,25 +43,26 @@ describe('Description component', () => {
     $('.issuable-meta .flash-container').remove();
   });
 
-  it('animates description changes', done => {
+  it('animates description changes', () => {
     vm.descriptionHtml = 'changed';
 
-    Vue.nextTick(() => {
+    return vm
+      .$nextTick()
+      .then(() => {
         expect(
           vm.$el.querySelector('.md').classList.contains('issue-realtime-pre-pulse'),
         ).toBeTruthy();
-
-      setTimeout(() => {
+        jest.runAllTimers();
+        return vm.$nextTick();
+      })
+      .then(() => {
         expect(
           vm.$el.querySelector('.md').classList.contains('issue-realtime-trigger-pulse'),
         ).toBeTruthy();
-
-        done();
-      });
       });
   });
 
-  it('opens reCAPTCHA dialog if update rejected as spam', done => {
+  it('opens reCAPTCHA dialog if update rejected as spam', () => {
     let modal;
     const recaptchaChild = vm.$children.find(
       // eslint-disable-next-line no-underscore-dangle
@@ -70,7 +75,8 @@ describe('Description component', () => {
       recaptcha_html: '<div class="g-recaptcha">recaptcha_html</div>',
     });
 
-    vm.$nextTick()
+    return vm
+      .$nextTick()
       .then(() => {
         modal = vm.$el.querySelector('.js-recaptcha-modal');
 
@@ -83,128 +89,105 @@ describe('Description component', () => {
       .then(() => {
         expect(modal.style.display).toEqual('none');
         expect(document.body.querySelector('.js-recaptcha-script')).toBeNull();
-      })
-      .then(done)
-      .catch(done.fail);
+      });
   });
 
-  describe('TaskList', () => {
-    let TaskList;
+  it('applies syntax highlighting and math when description changed', () => {
+    const vmSpy = jest.spyOn(vm, 'renderGFM');
+    const prototypeSpy = jest.spyOn($.prototype, 'renderGFM');
+    vm.descriptionHtml = 'changed';
+
+    return vm.$nextTick().then(() => {
+      expect(vm.$refs['gfm-content']).toBeDefined();
+      expect(vmSpy).toHaveBeenCalled();
+      expect(prototypeSpy).toHaveBeenCalled();
+      expect($.prototype.renderGFM).toHaveBeenCalled();
+    });
+  });
 
+  it('sets data-update-url', () => {
+    expect(vm.$el.querySelector('textarea').dataset.updateUrl).toEqual(TEST_HOST);
+  });
+
+  describe('TaskList', () => {
     beforeEach(() => {
       vm.$destroy();
+      TaskList.mockClear();
       vm = mountComponent(
         DescriptionComponent,
         Object.assign({}, props, {
           issuableType: 'issuableType',
         }),
       );
-      TaskList = spyOnDependency(Description, 'TaskList');
     });
 
-    it('re-inits the TaskList when description changed', done => {
+    it('re-inits the TaskList when description changed', () => {
       vm.descriptionHtml = 'changed';
 
-      setTimeout(() => {
       expect(TaskList).toHaveBeenCalled();
-        done();
-      });
     });
 
-    it('does not re-init the TaskList when canUpdate is false', done => {
+    it('does not re-init the TaskList when canUpdate is false', () => {
       vm.canUpdate = false;
       vm.descriptionHtml = 'changed';
 
-      setTimeout(() => {
-        expect(TaskList).not.toHaveBeenCalled();
-        done();
-      });
+      expect(TaskList).toHaveBeenCalledTimes(1);
     });
 
-    it('calls with issuableType dataType', done => {
+    it('calls with issuableType dataType', () => {
       vm.descriptionHtml = 'changed';
 
-      setTimeout(() => {
       expect(TaskList).toHaveBeenCalledWith({
         dataType: 'issuableType',
         fieldName: 'description',
         selector: '.detail-page-description',
-          onSuccess: jasmine.any(Function),
-          onError: jasmine.any(Function),
+        onSuccess: expect.any(Function),
+        onError: expect.any(Function),
         lockVersion: 0,
       });
-
-        done();
-      });
     });
   });
 
   describe('taskStatus', () => {
-    it('adds full taskStatus', done => {
+    it('adds full taskStatus', () => {
       vm.taskStatus = '1 of 1';
 
-      setTimeout(() => {
+      return vm.$nextTick().then(() => {
         expect(document.querySelector('.issuable-meta #task_status').textContent.trim()).toBe(
           '1 of 1',
         );
-
-        done();
       });
     });
 
-    it('adds short taskStatus', done => {
+    it('adds short taskStatus', () => {
       vm.taskStatus = '1 of 1';
 
-      setTimeout(() => {
+      return vm.$nextTick().then(() => {
         expect(document.querySelector('.issuable-meta #task_status_short').textContent.trim()).toBe(
           '1/1 task',
         );
-
-        done();
       });
     });
 
-    it('clears task status text when no tasks are present', done => {
+    it('clears task status text when no tasks are present', () => {
       vm.taskStatus = '0 of 0';
 
-      setTimeout(() => {
+      return vm.$nextTick().then(() => {
         expect(document.querySelector('.issuable-meta #task_status').textContent.trim()).toBe('');
-
-        done();
-      });
       });
     });
-
-  it('applies syntax highlighting and math when description changed', done => {
-    spyOn(vm, 'renderGFM').and.callThrough();
-    spyOn($.prototype, 'renderGFM').and.callThrough();
-    vm.descriptionHtml = 'changed';
-
-    Vue.nextTick(() => {
-      setTimeout(() => {
-        expect(vm.$refs['gfm-content']).toBeDefined();
-        expect(vm.renderGFM).toHaveBeenCalled();
-        expect($.prototype.renderGFM).toHaveBeenCalled();
-
-        done();
-      });
-    });
-  });
-
-  it('sets data-update-url', () => {
-    expect(vm.$el.querySelector('textarea').dataset.updateUrl).toEqual(gl.TEST_HOST);
   });
 
   describe('taskListUpdateError', () => {
     it('should create flash notification and emit an event to parent', () => {
       const msg =
         'Someone edited this issue at the same time you did. The description has been updated and you will need to make your changes again.';
-      spyOn(vm, '$emit');
+      const spy = jest.spyOn(vm, '$emit');
 
       vm.taskListUpdateError();
 
       expect(document.querySelector('.flash-container .flash-text').innerText.trim()).toBe(msg);
-      expect(vm.$emit).toHaveBeenCalledWith('taskListUpdateFailed');
+      expect(spy).toHaveBeenCalledWith('taskListUpdateFailed');
     });
   });
 });

spec/javascripts/issue_show/components/fields/description_template_spec.js → spec/frontend/issue_show/components/fields/description_template_spec.js

@@ -5,7 +5,7 @@ describe('Issue description template component', () => {
   let vm;
   let formState;
 
-  beforeEach(done => {
+  beforeEach(() => {
     const Component = Vue.extend(descriptionTemplate);
     formState = {
       description: 'test',
@@ -19,8 +19,6 @@ describe('Issue description template component', () => {
         projectNamespace: '/',
       },
     }).$mount();
-
-    Vue.nextTick(done);
   });
 
   it('renders templates as JSON array in data attribute', () => {

spec/javascripts/issue_show/components/form_spec.js → spec/frontend/issue_show/components/form_spec.js

 import Vue from 'vue';
-import mountComponent from 'spec/helpers/vue_mount_component_helper';
+import mountComponent from 'helpers/vue_mount_component_helper';
 import formComponent from '~/issue_show/components/form.vue';
+import Autosave from '~/autosave';
 import eventHub from '~/issue_show/event_hub';
 
+jest.mock('~/autosave');
+
 describe('Inline edit form component', () => {
   let vm;
   const defaultProps = {
@@ -65,18 +68,16 @@ describe('Inline edit form component', () => {
   });
 
   describe('autosave', () => {
-    let autosaveObj;
-    let autosave;
+    let spy;
 
     beforeEach(() => {
-      autosaveObj = { reset: jasmine.createSpy() };
-      autosave = spyOnDependency(formComponent, 'Autosave').and.returnValue(autosaveObj);
+      spy = jest.spyOn(Autosave.prototype, 'reset');
     });
 
     it('initialized Autosave on mount', () => {
       createComponent();
 
-      expect(autosave).toHaveBeenCalledTimes(2);
+      expect(Autosave).toHaveBeenCalledTimes(2);
     });
 
     it('calls reset on autosave when eventHub emits appropriate events', () => {
@@ -84,15 +85,15 @@ describe('Inline edit form component', () => {
 
       eventHub.$emit('close.form');
 
-      expect(autosaveObj.reset).toHaveBeenCalledTimes(2);
+      expect(spy).toHaveBeenCalledTimes(2);
 
       eventHub.$emit('delete.issuable');
 
-      expect(autosaveObj.reset).toHaveBeenCalledTimes(4);
+      expect(spy).toHaveBeenCalledTimes(4);
 
       eventHub.$emit('update.issuable');
 
-      expect(autosaveObj.reset).toHaveBeenCalledTimes(6);
+      expect(spy).toHaveBeenCalledTimes(6);
     });
   });
 });

spec/javascripts/issue_show/components/title_spec.js → spec/frontend/issue_show/components/title_spec.js

@@ -5,8 +5,9 @@ import eventHub from '~/issue_show/event_hub';
 
 describe('Title component', () => {
   let vm;
-
   beforeEach(() => {
+    setFixtures(`<title />`);
+
     const Component = Vue.extend(titleComponent);
     const store = new Store({
       titleHtml: '',
@@ -28,51 +29,39 @@ describe('Title component', () => {
     expect(vm.$el.querySelector('.title').innerHTML.trim()).toBe('Testing <img>');
   });
 
-  it('updates page title when changing titleHtml', done => {
-    spyOn(vm, 'setPageTitle');
+  it('updates page title when changing titleHtml', () => {
+    const spy = jest.spyOn(vm, 'setPageTitle');
     vm.titleHtml = 'test';
 
-    Vue.nextTick(() => {
-      expect(vm.setPageTitle).toHaveBeenCalled();
-
-      done();
+    return vm.$nextTick().then(() => {
+      expect(spy).toHaveBeenCalled();
     });
   });
 
-  it('animates title changes', done => {
+  it('animates title changes', () => {
     vm.titleHtml = 'test';
-
-    Vue.nextTick(() => {
-      expect(
-        vm.$el.querySelector('.title').classList.contains('issue-realtime-pre-pulse'),
-      ).toBeTruthy();
-
-      setTimeout(() => {
-        expect(
-          vm.$el.querySelector('.title').classList.contains('issue-realtime-trigger-pulse'),
-        ).toBeTruthy();
-
-        done();
-      });
+    return vm
+      .$nextTick()
+      .then(() => {
+        expect(vm.$el.querySelector('.title').classList).toContain('issue-realtime-pre-pulse');
+        jest.runAllTimers();
+        return vm.$nextTick();
+      })
+      .then(() => {
+        expect(vm.$el.querySelector('.title').classList).toContain('issue-realtime-trigger-pulse');
       });
   });
 
-  it('updates page title after changing title', done => {
+  it('updates page title after changing title', () => {
     vm.titleHtml = 'changed';
     vm.titleText = 'changed';
 
-    Vue.nextTick(() => {
+    return vm.$nextTick().then(() => {
       expect(document.querySelector('title').textContent.trim()).toContain('changed');
-
-      done();
     });
   });
 
   describe('inline edit button', () => {
-    beforeEach(() => {
-      spyOn(eventHub, '$emit');
-    });
-
     it('should not show by default', () => {
       expect(vm.$el.querySelector('.btn-edit')).toBeNull();
     });
@@ -92,6 +81,7 @@ describe('Title component', () => {
     });
 
     it('should trigger open.form event when clicked', () => {
+      jest.spyOn(eventHub, '$emit').mockImplementation(() => {});
       vm.showInlineEditButton = true;
       vm.canUpdate = true;
 

spec/javascripts/issue_show/helpers.js

-export * from '../../frontend/issue_show/helpers.js';

spec/javascripts/issue_show/mock_data.js

-export * from '../../frontend/issue_show/mock_data';