import { mount } from '@vue/test-utils'; import { TEST_HOST, FIXTURES_PATH } from 'spec/test_constants'; import AxiosMockAdapter from 'axios-mock-adapter'; import $ from 'jquery'; import MarkdownField from '~/vue_shared/components/markdown/field.vue'; import axios from '~/lib/utils/axios_utils'; const markdownPreviewPath = `${TEST_HOST}/preview`; const markdownDocsPath = `${TEST_HOST}/docs`; const textareaValue = 'testing\n123'; const uploadsPath = 'test/uploads'; function assertMarkdownTabs(isWrite, writeLink, previewLink, wrapper) { expect(writeLink.element.parentNode.classList.contains('active')).toBe(isWrite); expect(previewLink.element.parentNode.classList.contains('active')).toBe(!isWrite); expect(wrapper.find('.md-preview-holder').element.style.display).toBe(isWrite ? 'none' : ''); } describe('Markdown field component', () => { let axiosMock; let subject; beforeEach(() => { axiosMock = new AxiosMockAdapter(axios); // window.uploads_path is needed for dropzone to initialize window.uploads_path = uploadsPath; }); afterEach(() => { subject.destroy(); subject = null; axiosMock.restore(); }); function createSubject() { // We actually mount a wrapper component so that we can force Vue to rerender classes in order to test a regression // caused by mixing Vanilla JS and Vue. subject = mount( { components: { MarkdownField, }, props: { wrapperClasses: { type: String, required: false, default: '', }, }, template: ` `, }, { propsData: { markdownDocsPath, markdownPreviewPath, isSubmitting: false, textareaValue, }, }, ); } const getPreviewLink = () => subject.find('.nav-links .js-preview-link'); const getWriteLink = () => subject.find('.nav-links .js-write-link'); const getMarkdownButton = () => subject.find('.js-md'); const getAllMarkdownButtons = () => subject.findAll('.js-md'); const getVideo = () => subject.find('video'); const getAttachButton = () => subject.find('.button-attach-file'); const clickAttachButton = () => getAttachButton().trigger('click'); const findDropzone = () => subject.find('.div-dropzone'); describe('mounted', () => { const previewHTML = `

markdown preview

`; let previewLink; let writeLink; let dropzoneSpy; beforeEach(() => { dropzoneSpy = jest.fn(); createSubject(); findDropzone().element.addEventListener('click', dropzoneSpy); }); it('renders textarea inside backdrop', () => { expect(subject.find('.zen-backdrop textarea').element).not.toBeNull(); }); describe('markdown preview', () => { beforeEach(() => { axiosMock.onPost(markdownPreviewPath).reply(200, { body: previewHTML }); }); it('sets preview link as active', () => { previewLink = getPreviewLink(); previewLink.trigger('click'); return subject.vm.$nextTick().then(() => { expect(previewLink.element.parentNode.classList.contains('active')).toBeTruthy(); }); }); it('shows preview loading text', () => { previewLink = getPreviewLink(); previewLink.trigger('click'); return subject.vm.$nextTick(() => { expect(subject.find('.md-preview-holder').element.textContent.trim()).toContain( 'Loading…', ); }); }); it('renders markdown preview and GFM', () => { const renderGFMSpy = jest.spyOn($.fn, 'renderGFM'); previewLink = getPreviewLink(); previewLink.trigger('click'); return axios.waitFor(markdownPreviewPath).then(() => { expect(subject.find('.md-preview-holder').element.innerHTML).toContain(previewHTML); expect(renderGFMSpy).toHaveBeenCalled(); }); }); it('calls video.pause() on comment input when isSubmitting is changed to true', () => { previewLink = getPreviewLink(); previewLink.trigger('click'); let callPause; return axios .waitFor(markdownPreviewPath) .then(() => { const video = getVideo(); callPause = jest.spyOn(video.element, 'pause').mockImplementation(() => true); subject.setProps({ isSubmitting: true }); return subject.vm.$nextTick(); }) .then(() => { expect(callPause).toHaveBeenCalled(); }); }); it('clicking already active write or preview link does nothing', async () => { writeLink = getWriteLink(); previewLink = getPreviewLink(); writeLink.trigger('click'); await subject.vm.$nextTick(); assertMarkdownTabs(true, writeLink, previewLink, subject); writeLink.trigger('click'); await subject.vm.$nextTick(); assertMarkdownTabs(true, writeLink, previewLink, subject); previewLink.trigger('click'); await subject.vm.$nextTick(); assertMarkdownTabs(false, writeLink, previewLink, subject); previewLink.trigger('click'); await subject.vm.$nextTick(); assertMarkdownTabs(false, writeLink, previewLink, subject); }); }); describe('markdown buttons', () => { it('converts single words', () => { const textarea = subject.find('textarea').element; textarea.setSelectionRange(0, 7); const markdownButton = getMarkdownButton(); markdownButton.trigger('click'); return subject.vm.$nextTick(() => { expect(textarea.value).toContain('**testing**'); }); }); it('converts a line', () => { const textarea = subject.find('textarea').element; textarea.setSelectionRange(0, 0); const markdownButton = getAllMarkdownButtons().wrappers[5]; markdownButton.trigger('click'); return subject.vm.$nextTick(() => { expect(textarea.value).toContain('- testing'); }); }); it('converts multiple lines', () => { const textarea = subject.find('textarea').element; textarea.setSelectionRange(0, 50); const markdownButton = getAllMarkdownButtons().wrappers[5]; markdownButton.trigger('click'); return subject.vm.$nextTick(() => { expect(textarea.value).toContain('- testing\n- 123'); }); }); }); it('should render attach a file button', () => { expect(getAttachButton().text()).toBe('Attach a file'); }); it('should trigger dropzone when attach button is clicked', () => { expect(dropzoneSpy).not.toHaveBeenCalled(); clickAttachButton(); expect(dropzoneSpy).toHaveBeenCalled(); }); describe('when textarea has changed', () => { beforeEach(async () => { // Do something to trigger rerendering the class subject.setProps({ wrapperClasses: 'foo' }); await subject.vm.$nextTick(); }); it('should have rerendered classes and kept gfm-form', () => { expect(subject.classes()).toEqual(expect.arrayContaining(['gfm-form', 'foo'])); }); it('should trigger dropzone when attach button is clicked', () => { expect(dropzoneSpy).not.toHaveBeenCalled(); clickAttachButton(); expect(dropzoneSpy).toHaveBeenCalled(); }); }); }); });