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+import { createLocalVue, shallowMount } from '@vue/test-utils';
+import { GlIcon, GlLoadingIcon, GlIntersectionObserver } from '@gitlab/ui';
+import VueRouter from 'vue-router';
+import Item from '~/design_management_new/components/list/item.vue';
+
+const localVue = createLocalVue();
+localVue.use(VueRouter);
+const router = new VueRouter();
+
+// Referenced from: doc/api/graphql/reference/gitlab_schema.graphql:DesignVersionEvent
+const DESIGN_VERSION_EVENT = {
+ CREATION: 'CREATION',
+ DELETION: 'DELETION',
+ MODIFICATION: 'MODIFICATION',
+ NO_CHANGE: 'NONE',
+};
+
+describe('Design management list item component', () => {
+ let wrapper;
+
+ function createComponent({
+ notesCount = 0,
+ event = DESIGN_VERSION_EVENT.NO_CHANGE,
+ isUploading = false,
+ imageLoading = false,
+ } = {}) {
+ wrapper = shallowMount(Item, {
+ localVue,
+ router,
+ propsData: {
+ id: 1,
+ filename: 'test',
+ image: 'http://via.placeholder.com/300',
+ isUploading,
+ event,
+ notesCount,
+ updatedAt: '01-01-2019',
+ },
+ data() {
+ return {
+ imageLoading,
+ };
+ },
+ stubs: ['router-link'],
+ });
+ }
+
+ afterEach(() => {
+ wrapper.destroy();
+ });
+
+ describe('when item is not in view', () => {
+ it('image is not rendered', () => {
+ createComponent();
+
+ const image = wrapper.find('img');
+ expect(image.attributes('src')).toBe('');
+ });
+ });
+
+ describe('when item appears in view', () => {
+ let image;
+ let glIntersectionObserver;
+
+ beforeEach(() => {
+ createComponent();
+ image = wrapper.find('img');
+ glIntersectionObserver = wrapper.find(GlIntersectionObserver);
+
+ glIntersectionObserver.vm.$emit('appear');
+ return wrapper.vm.$nextTick();
+ });
+
+ describe('before image is loaded', () => {
+ it('renders loading spinner', () => {
+ expect(wrapper.find(GlLoadingIcon)).toExist();
+ });
+ });
+
+ describe('after image is loaded', () => {
+ beforeEach(() => {
+ image.trigger('load');
+ return wrapper.vm.$nextTick();
+ });
+
+ it('renders an image', () => {
+ expect(image.attributes('src')).toBe('http://via.placeholder.com/300');
+ expect(image.isVisible()).toBe(true);
+ });
+
+ it('renders media broken icon when image onerror triggered', () => {
+ image.trigger('error');
+ return wrapper.vm.$nextTick().then(() => {
+ expect(image.isVisible()).toBe(false);
+ expect(wrapper.find(GlIcon).element).toMatchSnapshot();
+ });
+ });
+
+ describe('when imageV432x230 and image provided', () => {
+ it('renders imageV432x230 image', () => {
+ const mockSrc = 'mock-imageV432x230-url';
+ wrapper.setProps({ imageV432x230: mockSrc });
+
+ return wrapper.vm.$nextTick().then(() => {
+ expect(image.attributes('src')).toBe(mockSrc);
+ });
+ });
+ });
+
+ describe('when image disappears from view and then reappears', () => {
+ beforeEach(() => {
+ glIntersectionObserver.vm.$emit('appear');
+ return wrapper.vm.$nextTick();
+ });
+
+ it('renders an image', () => {
+ expect(image.isVisible()).toBe(true);
+ });
+ });
+ });
+ });
+
+ describe('with notes', () => {
+ it('renders item with single comment', () => {
+ createComponent({ notesCount: 1 });
+
+ expect(wrapper.element).toMatchSnapshot();
+ });
+
+ it('renders item with multiple comments', () => {
+ createComponent({ notesCount: 2 });
+
+ expect(wrapper.element).toMatchSnapshot();
+ });
+ });
+
+ describe('with no notes', () => {
+ it('renders item with no status icon for none event', () => {
+ createComponent();
+
+ expect(wrapper.element).toMatchSnapshot();
+ });
+
+ it('renders item with correct status icon for modification event', () => {
+ createComponent({ event: DESIGN_VERSION_EVENT.MODIFICATION });
+
+ expect(wrapper.element).toMatchSnapshot();
+ });
+
+ it('renders item with correct status icon for deletion event', () => {
+ createComponent({ event: DESIGN_VERSION_EVENT.DELETION });
+
+ expect(wrapper.element).toMatchSnapshot();
+ });
+
+ it('renders item with correct status icon for creation event', () => {
+ createComponent({ event: DESIGN_VERSION_EVENT.CREATION });
+
+ expect(wrapper.element).toMatchSnapshot();
+ });
+
+ it('renders loading spinner when isUploading is true', () => {
+ createComponent({ isUploading: true });
+
+ expect(wrapper.element).toMatchSnapshot();
+ });
+ });
+});