Merge branch '34723-update-board-tests-to-use-vue-test-utils' into 'master'

Update board tests to use vue-test-utils

See merge request gitlab-org/gitlab!24452

ee/spec/frontend/boards/components/board_list_selector/assignees_list_item_spec.js

-import Vue from 'vue';
-
+import { shallowMount } from '@vue/test-utils';
 import AssigneesListItem from 'ee/boards/components/boards_list_selector/assignees_list_item.vue';
-import mountComponent from 'helpers/vue_mount_component_helper';
-
 import { mockAssigneesList } from 'jest/boards/mock_data';
 
-const createComponent = () => {
-  const Component = Vue.extend(AssigneesListItem);
-
-  return mountComponent(Component, {
-    item: mockAssigneesList[0],
-  });
-};
-
 describe('AssigneesListItem', () => {
-  let vm;
+  const assignee = mockAssigneesList[0];
+  let wrapper;
 
   beforeEach(() => {
-    vm = createComponent();
+    wrapper = shallowMount(AssigneesListItem, {
+      propsData: {
+        item: assignee,
+      },
+    });
   });
 
   afterEach(() => {
-    vm.$destroy();
+    wrapper.destroy();
   });
 
-  describe('computed', () => {
-    describe('avatarAltText', () => {
-      it('returns computed alt text based on assignee.name', () => {
-        expect(vm.avatarAltText).toBe(`${mockAssigneesList[0].name}'s avatar`);
-      });
-    });
+  it('renders component container element with class `filter-dropdown-item`', () => {
+    expect(wrapper.contains('.filter-dropdown-item')).toBe(true);
   });
 
-  describe('methods', () => {
-    describe('handleItemClick', () => {
-      it('emits `onItemSelect` event on component and sends `assignee` as event param', () => {
-        jest.spyOn(vm, '$emit');
-        const assignee = mockAssigneesList[0];
+  it('emits `onItemSelect` event on component click and sends `assignee` as event param', () => {
+    wrapper.find('.filter-dropdown-item').trigger('click');
 
-        vm.handleItemClick();
+    expect(wrapper.emitted().onItemSelect[0]).toEqual([assignee]);
+  });
 
-        expect(vm.$emit).toHaveBeenCalledWith('onItemSelect', assignee);
+  describe('avatar', () => {
+    it('has alt text', () => {
+      expect(wrapper.find('.avatar').attributes('alt')).toBe(`${assignee.name}'s avatar`);
     });
+
+    it('has src url', () => {
+      expect(wrapper.find('.avatar').attributes('src')).toBe(assignee.avatar_url);
     });
   });
 
-  describe('template', () => {
-    it('renders component container element with class `filter-dropdown-item`', () => {
-      expect(vm.$el.classList.contains('filter-dropdown-item')).toBe(true);
+  describe('user details', () => {
+    it('shows assignee name', () => {
+      expect(wrapper.find('.dropdown-user-details').text()).toContain(assignee.name);
     });
 
-    it('renders user item button element', () => {
-      const assignee = mockAssigneesList[0];
-      const buttonEl = vm.$el.querySelector('.dropdown-user');
-
-      expect(buttonEl).not.toBeNull();
-      expect(
-        buttonEl.querySelector('.avatar-container.s32 img.avatar.s32').getAttribute('src'),
-      ).toBe(assignee.avatar_url);
-
-      expect(buttonEl.querySelector('.dropdown-user-details').innerText).toContain(assignee.name);
-      expect(
-        buttonEl.querySelector('.dropdown-user-details .dropdown-light-content').innerText,
-      ).toContain(`@${assignee.username}`);
+    it('shows assignee username', () => {
+      expect(wrapper.find('.dropdown-user-details .dropdown-light-content').text()).toContain(
+        `@${assignee.username}`,
+      );
     });
   });
 });

ee/spec/frontend/boards/components/board_list_selector/list_container_spec.js

+import { shallowMount } from '@vue/test-utils';
 import Vue from 'vue';
-
 import ListContainer from 'ee/boards/components/boards_list_selector/list_container.vue';
-import mountComponent from 'helpers/vue_mount_component_helper';
-
+import ListFilter from 'ee/boards/components/boards_list_selector/list_filter.vue';
+import ListContent from 'ee/boards/components/boards_list_selector/list_content.vue';
 import { mockAssigneesList } from 'jest/boards/mock_data';
 
-const createComponent = () => {
-  const Component = Vue.extend(ListContainer);
+describe('ListContainer', () => {
+  let wrapper;
 
-  return mountComponent(Component, {
+  beforeEach(() => {
+    wrapper = shallowMount(ListContainer, {
+      propsData: {
         loading: false,
         items: mockAssigneesList,
         listType: 'assignees',
+      },
     });
-};
-
-describe('ListContainer', () => {
-  let vm;
-
-  beforeEach(() => {
-    vm = createComponent();
   });
 
   afterEach(() => {
-    vm.$destroy();
+    wrapper.destroy();
   });
 
   describe('computed', () => {
     describe('filteredItems', () => {
       it('returns assignees list as it is when `query` is empty', () => {
-        vm.query = '';
+        wrapper.setData({ query: '' });
 
-        expect(vm.filteredItems.length).toBe(mockAssigneesList.length);
+        expect(wrapper.vm.filteredItems.length).toBe(mockAssigneesList.length);
       });
 
       it('returns filtered assignees list as it is when `query` has name', () => {
         const assignee = mockAssigneesList[0];
 
-        vm.query = assignee.name;
+        wrapper.setData({ query: assignee.name });
 
-        expect(vm.filteredItems.length).toBe(1);
-        expect(vm.filteredItems[0].name).toBe(assignee.name);
+        expect(wrapper.vm.filteredItems.length).toBe(1);
+        expect(wrapper.vm.filteredItems[0].name).toBe(assignee.name);
       });
 
       it('returns filtered assignees list as it is when `query` has username', () => {
         const assignee = mockAssigneesList[0];
 
-        vm.query = assignee.username;
+        wrapper.setData({ query: assignee.username });
 
-        expect(vm.filteredItems.length).toBe(1);
-        expect(vm.filteredItems[0].username).toBe(assignee.username);
+        expect(wrapper.vm.filteredItems.length).toBe(1);
+        expect(wrapper.vm.filteredItems[0].username).toBe(assignee.username);
       });
     });
   });
@@ -58,39 +54,39 @@ describe('ListContainer', () => {
     describe('handleSearch', () => {
       it('sets value of param `query` to component prop `query`', () => {
         const query = 'foobar';
-        vm.handleSearch(query);
+        wrapper.vm.handleSearch(query);
 
-        expect(vm.query).toBe(query);
+        expect(wrapper.vm.query).toBe(query);
       });
     });
 
     describe('handleItemClick', () => {
       it('emits `onItemSelect` event on component and sends `assignee` as event param', () => {
-        jest.spyOn(vm, '$emit');
         const assignee = mockAssigneesList[0];
 
-        vm.handleItemClick(assignee);
+        wrapper.vm.handleItemClick(assignee);
 
-        expect(vm.$emit).toHaveBeenCalledWith('onItemSelect', assignee);
+        expect(wrapper.emitted().onItemSelect[0]).toEqual([assignee]);
       });
     });
   });
 
   describe('template', () => {
     it('renders component container element with class `dropdown-assignees-list`', () => {
-      expect(vm.$el.classList.contains('dropdown-assignees-list')).toBe(true);
+      expect(wrapper.classes('dropdown-assignees-list')).toBe(true);
     });
 
     it('renders loading animation when prop `loading` is true', () => {
-      vm.loading = true;
+      wrapper.setProps({ loading: true });
+
       return Vue.nextTick().then(() => {
-        expect(vm.$el.querySelector('.dropdown-loading')).not.toBeNull();
+        expect(wrapper.find('.dropdown-loading').exists()).toBe(true);
       });
     });
 
     it('renders dropdown body elements', () => {
-      expect(vm.$el.querySelector('.dropdown-input')).not.toBeNull();
-      expect(vm.$el.querySelector('.dropdown-content')).not.toBeNull();
+      expect(wrapper.find(ListFilter).exists()).toBe(true);
+      expect(wrapper.find(ListContent).exists()).toBe(true);
     });
   });
 });

ee/spec/frontend/boards/components/board_list_selector/list_content_spec.js

-import Vue from 'vue';
-
+import { shallowMount } from '@vue/test-utils';
 import ListContent from 'ee/boards/components/boards_list_selector/list_content.vue';
-import mountComponent from 'helpers/vue_mount_component_helper';
-
 import { mockAssigneesList } from 'jest/boards/mock_data';
 
-const createComponent = () => {
-  const Component = Vue.extend(ListContent);
+describe('ListContent', () => {
+  let wrapper;
 
-  return mountComponent(Component, {
+  beforeEach(() => {
+    wrapper = shallowMount(ListContent, {
+      propsData: {
         items: mockAssigneesList,
         listType: 'assignees',
+      },
     });
-};
-
-describe('ListContent', () => {
-  let vm;
-
-  beforeEach(() => {
-    vm = createComponent();
   });
 
   afterEach(() => {
-    vm.$destroy();
+    wrapper.destroy();
   });
 
-  describe('methods', () => {
-    describe('handleItemClick', () => {
   it('emits `onItemSelect` event on component and sends `assignee` as event param', () => {
-        jest.spyOn(vm, '$emit');
     const assignee = mockAssigneesList[0];
 
-        vm.handleItemClick(assignee);
+    wrapper.vm.handleItemClick(assignee);
 
-        expect(vm.$emit).toHaveBeenCalledWith('onItemSelect', assignee);
-      });
-    });
+    expect(wrapper.emitted().onItemSelect[0]).toEqual([assignee]);
   });
 
-  describe('template', () => {
   it('renders component container element with class `dropdown-content`', () => {
-      expect(vm.$el.classList.contains('dropdown-content')).toBe(true);
+    expect(wrapper.classes('dropdown-content')).toBe(true);
   });
 
   it('renders UL parent element as child within container', () => {
-      expect(vm.$el.querySelector('ul')).not.toBeNull();
-    });
+    expect(wrapper.find('ul').exists()).toBe(true);
   });
 });

ee/spec/frontend/boards/components/board_list_selector/list_filter_spec.js

+import { shallowMount } from '@vue/test-utils';
 import Vue from 'vue';
-
 import ListFilter from 'ee/boards/components/boards_list_selector/list_filter.vue';
-import mountComponent from 'helpers/vue_mount_component_helper';
-
-const createComponent = () => {
-  const Component = Vue.extend(ListFilter);
-
-  return mountComponent(Component);
-};
 
 describe('ListFilter', () => {
-  let vm;
+  let wrapper;
 
   beforeEach(() => {
-    vm = createComponent();
+    wrapper = shallowMount(ListFilter);
   });
 
   afterEach(() => {
-    vm.$destroy();
+    wrapper.destroy();
   });
 
-  describe('methods', () => {
-    describe('handleInputChange', () => {
-      it('emits `onSearchInput` event on component and sends `query` as event param', () => {
-        jest.spyOn(vm, '$emit');
-        const query = 'foobar';
-        vm.query = query;
+  describe('input field', () => {
+    it('emits `onSearchInput` event on keyup and sends input text as event param', () => {
+      const input = wrapper.find('input');
+      input.setValue('foobar');
+      input.trigger('keyup');
 
-        vm.handleInputChange();
-
-        expect(vm.$emit).toHaveBeenCalledWith('onSearchInput', query);
+      expect(wrapper.emitted().onSearchInput[0]).toEqual(['foobar']);
     });
   });
 
-    describe('handleInputClear', () => {
-      it('clears value of prop `query` and calls `handleInputChange` method on component', () => {
-        jest.spyOn(vm, 'handleInputChange');
-        vm.query = 'foobar';
+  describe('clear button', () => {
+    let input;
 
-        vm.handleInputClear();
+    beforeEach(() => {
+      // Pre-populate input field with text
+      input = wrapper.find('input');
+      input.setValue('foobar');
+      input.trigger('keyup');
+    });
 
-        expect(vm.query).toBe('');
-        expect(vm.handleInputChange).toHaveBeenCalled();
+    it('clears input field and emits `onSearchInput` event with empty value', () => {
+      expect(input.element.value).toBe('foobar');
+
+      wrapper.find('.dropdown-input-clear').trigger('click');
+
+      return Vue.nextTick().then(() => {
+        expect(input.element.value).toBe('');
+        expect(wrapper.emitted().onSearchInput[1]).toEqual(['']);
       });
     });
   });
 
   describe('template', () => {
     it('renders component container element with class `dropdown-input`', () => {
-      expect(vm.$el.classList.contains('dropdown-input')).toBe(true);
+      expect(wrapper.classes('dropdown-input')).toBe(true);
     });
 
     it('renders class `has-value` on container element when prop `query` is not empty', () => {
-      vm.query = 'foobar';
+      wrapper.setData({ query: 'foobar' });
+
       return Vue.nextTick().then(() => {
-        expect(vm.$el.classList.contains('has-value')).toBe(true);
+        expect(wrapper.classes('has-value')).toBe(true);
       });
     });
 
     it('removes class `has-value` from container element when prop `query` is empty', () => {
-      vm.query = '';
+      wrapper.setData({ query: '' });
+
       return Vue.nextTick().then(() => {
-        expect(vm.$el.classList.contains('has-value')).toBe(false);
+        expect(wrapper.classes('has-value')).toBe(false);
       });
     });
 
     it('renders search input element', () => {
-      const inputEl = vm.$el.querySelector('input.dropdown-input-field');
+      const inputEl = wrapper.find('input.dropdown-input-field');
 
-      expect(inputEl).not.toBeNull();
-      expect(inputEl.getAttribute('placeholder')).toBe('Search');
+      expect(inputEl.exists()).toBe(true);
+      expect(inputEl.attributes('placeholder')).toBe('Search');
     });
 
     it('renders search input icons', () => {
-      expect(vm.$el.querySelector('i.fa.fa-search.dropdown-input-search')).not.toBeNull();
-      expect(vm.$el.querySelector('i.fa.fa-times.dropdown-input-clear')).not.toBeNull();
+      expect(wrapper.find('i.fa.fa-search.dropdown-input-search').exists()).toBe(true);
+      expect(wrapper.find('i.fa.fa-times.dropdown-input-clear').exists()).toBe(true);
     });
   });
 });

ee/spec/frontend/boards/components/issue_card_weight_spec.js

-import Vue from 'vue';
+import { shallowMount } from '@vue/test-utils';
 import IssueCardWeight from 'ee/boards/components/issue_card_weight.vue';
-import mountComponent from 'helpers/vue_mount_component_helper';
 
-describe('IssueCardWeight component', () => {
-  let vm;
-  let Component;
-
-  beforeAll(() => {
-    Component = Vue.extend(IssueCardWeight);
+function mountIssueCardWeight(propsData) {
+  return shallowMount(IssueCardWeight, {
+    propsData,
   });
+}
+
+describe('IssueCardWeight', () => {
+  let wrapper;
 
   afterEach(() => {
-    vm.$destroy();
+    wrapper.destroy();
+  });
+
+  describe('weight text', () => {
+    it('shows 0 when weight is 0', () => {
+      wrapper = mountIssueCardWeight({
+        weight: 0,
       });
 
-  it('renders weight', () => {
-    vm = mountComponent(Component, {
+      expect(wrapper.find('.board-card-info-text').text()).toContain(0);
+    });
+
+    it('shows 5 when weight is 5', () => {
+      wrapper = mountIssueCardWeight({
         weight: 5,
       });
 
-    expect(vm.$el.querySelector('.board-card-info-text').innerText).toContain('5');
+      expect(wrapper.find('.board-card-info-text').text()).toContain('5');
+    });
   });
 
   it('renders a link when no tag is specified', () => {
-    vm = mountComponent(Component, {
+    wrapper = mountIssueCardWeight({
       weight: 2,
     });
 
-    expect(vm.$el.querySelector('a.board-card-info')).toBeDefined();
+    expect(wrapper.find('span.board-card-info').exists()).toBe(false);
+    expect(wrapper.find('a.board-card-info').exists()).toBe(true);
   });
 
   it('renders the tag when it is explicitly specified', () => {
-    vm = mountComponent(Component, {
+    wrapper = mountIssueCardWeight({
       weight: 2,
       tagName: 'span',
     });
 
-    expect(vm.$el.querySelector('span.board-card-info')).toBeDefined();
-    expect(vm.$el.querySelector('a.board-card-info')).toBeNull();
-  });
-
-  describe('with weight=0', () => {
-    beforeEach(() => {
-      vm = mountComponent(Component, {
-        weight: 0,
-      });
-    });
-
-    afterEach(() => {
-      vm.$destroy();
-    });
-
-    it('renders weight', () => {
-      expect(vm.$el.querySelector('.board-card-info-text')).toBeDefined();
-      expect(vm.$el.querySelector('.board-card-info-text').innerText).toContain(0);
-    });
+    expect(wrapper.find('span.board-card-info').exists()).toBe(true);
+    expect(wrapper.find('a.board-card-info').exists()).toBe(false);
   });
 });

spec/frontend/boards/components/issue_card_inner_scoped_label_spec.js

-import Vue from 'vue';
-import mountComponent from 'helpers/vue_mount_component_helper';
+import { GlLink } from '@gitlab/ui';
+import { shallowMount } from '@vue/test-utils';
 import IssueCardInnerScopedLabel from '~/boards/components/issue_card_inner_scoped_label.vue';
 
 describe('IssueCardInnerScopedLabel Component', () => {
-  let vm;
-  const Component = Vue.extend(IssueCardInnerScopedLabel);
-  const props = {
+  let wrapper;
+
+  beforeEach(() => {
+    wrapper = shallowMount(IssueCardInnerScopedLabel, {
+      propsData: {
         label: { title: 'Foo::Bar', description: 'Some Random Description' },
         labelStyle: { background: 'white', color: 'black' },
         scopedLabelsDocumentationLink: '/docs-link',
-  };
-  const createComponent = () => mountComponent(Component, { ...props });
-
-  beforeEach(() => {
-    vm = createComponent();
+      },
+    });
   });
 
   afterEach(() => {
-    vm.$destroy();
+    wrapper.destroy();
   });
 
   it('should render label title', () => {
-    expect(vm.$el.querySelector('.color-label').textContent.trim()).toEqual('Foo::Bar');
+    expect(wrapper.find('.color-label').text()).toBe('Foo::Bar');
   });
 
   it('should render question mark symbol', () => {
-    expect(vm.$el.querySelector('.fa-question-circle')).not.toBeNull();
+    expect(wrapper.find('.fa-question-circle').exists()).toBe(true);
   });
 
   it('should render label style provided', () => {
-    const node = vm.$el.querySelector('.color-label');
+    const label = wrapper.find('.color-label');
 
-    expect(node.style.background).toEqual(props.labelStyle.background);
-    expect(node.style.color).toEqual(props.labelStyle.color);
+    expect(label.attributes('style')).toContain('background: white;');
+    expect(label.attributes('style')).toContain('color: black;');
   });
 
   it('should render the docs link', () => {
-    expect(vm.$el.querySelector('a.scoped-label').href).toContain(
-      props.scopedLabelsDocumentationLink,
-    );
+    expect(wrapper.find(GlLink).attributes('href')).toBe('/docs-link');
   });
 });

spec/frontend/boards/components/issue_due_date_spec.js

-import Vue from 'vue';
+import { shallowMount } from '@vue/test-utils';
 import dateFormat from 'dateformat';
 import IssueDueDate from '~/boards/components/issue_due_date.vue';
-import mountComponent from '../../helpers/vue_mount_component_helper';
+
+const createComponent = (dueDate = new Date(), closed = false) =>
+  shallowMount(IssueDueDate, {
+    propsData: {
+      closed,
+      date: dateFormat(dueDate, 'yyyy-mm-dd', true),
+    },
+  });
+
+const findTime = wrapper => wrapper.find('time');
 
 describe('Issue Due Date component', () => {
-  let vm;
+  let wrapper;
   let date;
-  const Component = Vue.extend(IssueDueDate);
-  const createComponent = (dueDate = new Date(), closed = false) =>
-    mountComponent(Component, { closed, date: dateFormat(dueDate, 'yyyy-mm-dd', true) });
 
   beforeEach(() => {
     date = new Date();
-    vm = createComponent();
   });
 
   afterEach(() => {
-    vm.$destroy();
+    wrapper.destroy();
   });
 
   it('should render "Today" if the due date is today', () => {
-    const timeContainer = vm.$el.querySelector('time');
+    wrapper = createComponent();
 
-    expect(timeContainer.textContent.trim()).toEqual('Today');
+    expect(findTime(wrapper).text()).toBe('Today');
   });
 
   it('should render "Yesterday" if the due date is yesterday', () => {
     date.setDate(date.getDate() - 1);
-    vm = createComponent(date);
+    wrapper = createComponent(date);
 
-    expect(vm.$el.querySelector('time').textContent.trim()).toEqual('Yesterday');
+    expect(findTime(wrapper).text()).toBe('Yesterday');
   });
 
   it('should render "Tomorrow" if the due date is one day from now', () => {
     date.setDate(date.getDate() + 1);
-    vm = createComponent(date);
+    wrapper = createComponent(date);
 
-    expect(vm.$el.querySelector('time').textContent.trim()).toEqual('Tomorrow');
+    expect(findTime(wrapper).text()).toBe('Tomorrow');
   });
 
   it('should render day of the week if due date is one week away', () => {
     date.setDate(date.getDate() + 5);
-    vm = createComponent(date);
+    wrapper = createComponent(date);
 
-    expect(vm.$el.querySelector('time').textContent.trim()).toEqual(dateFormat(date, 'dddd'));
+    expect(findTime(wrapper).text()).toBe(dateFormat(date, 'dddd'));
   });
 
   it('should render month and day for other dates', () => {
     date.setDate(date.getDate() + 17);
-    vm = createComponent(date);
+    wrapper = createComponent(date);
     const today = new Date();
     const isDueInCurrentYear = today.getFullYear() === date.getFullYear();
     const format = isDueInCurrentYear ? 'mmm d' : 'mmm d, yyyy';
 
-    expect(vm.$el.querySelector('time').textContent.trim()).toEqual(dateFormat(date, format));
+    expect(findTime(wrapper).text()).toBe(dateFormat(date, format));
   });
 
   it('should contain the correct `.text-danger` css class for overdue issue that is open', () => {
     date.setDate(date.getDate() - 17);
-    vm = createComponent(date);
+    wrapper = createComponent(date);
 
-    expect(vm.$el.querySelector('time').classList.contains('text-danger')).toEqual(true);
+    expect(findTime(wrapper).classes('text-danger')).toBe(true);
   });
 
   it('should not contain the `.text-danger` css class for overdue issue that is closed', () => {
     date.setDate(date.getDate() - 17);
-    vm = createComponent(date, true);
+    const closed = true;
+    wrapper = createComponent(date, closed);
 
-    expect(vm.$el.querySelector('time').classList.contains('text-danger')).toEqual(false);
+    expect(findTime(wrapper).classes('text-danger')).toBe(false);
   });
 });