83 lines
2.4 KiB
JavaScript
83 lines
2.4 KiB
JavaScript
import { shallowMount } from '@vue/test-utils';
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import SimpleViewer from '~/vue_shared/components/blob_viewers/simple_viewer.vue';
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import { HIGHLIGHT_CLASS_NAME } from '~/vue_shared/components/blob_viewers/constants';
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describe('Blob Simple Viewer component', () => {
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let wrapper;
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const contentMock = `<span id="LC1">First</span>\n<span id="LC2">Second</span>\n<span id="LC3">Third</span>`;
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function createComponent(content = contentMock) {
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wrapper = shallowMount(SimpleViewer, {
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propsData: {
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content,
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type: 'text',
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},
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});
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}
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afterEach(() => {
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wrapper.destroy();
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});
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it('does not fail if content is empty', () => {
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const spy = jest.spyOn(window.console, 'error');
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createComponent('');
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expect(spy).not.toHaveBeenCalled();
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});
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describe('rendering', () => {
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beforeEach(() => {
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createComponent();
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});
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it('matches the snapshot', () => {
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expect(wrapper.element).toMatchSnapshot();
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});
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it('renders exactly three lines', () => {
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expect(wrapper.findAll('.js-line-number')).toHaveLength(3);
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});
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it('renders the content without transformations', () => {
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expect(wrapper.html()).toContain(contentMock);
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});
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});
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describe('functionality', () => {
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const scrollIntoViewMock = jest.fn();
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HTMLElement.prototype.scrollIntoView = scrollIntoViewMock;
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beforeEach(() => {
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window.location.hash = '#LC2';
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createComponent();
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});
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afterEach(() => {
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window.location.hash = '';
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});
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it('scrolls to requested line when rendered', () => {
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const linetoBeHighlighted = wrapper.find('#LC2');
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expect(scrollIntoViewMock).toHaveBeenCalled();
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expect(wrapper.vm.highlightedLine).toBe(linetoBeHighlighted.element);
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expect(linetoBeHighlighted.classes()).toContain(HIGHLIGHT_CLASS_NAME);
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});
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it('switches highlighting when another line is selected', () => {
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const currentlyHighlighted = wrapper.find('#LC2');
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const hash = '#LC3';
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const linetoBeHighlighted = wrapper.find(hash);
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expect(wrapper.vm.highlightedLine).toBe(currentlyHighlighted.element);
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wrapper.vm.scrollToLine(hash);
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return wrapper.vm.$nextTick(() => {
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expect(wrapper.vm.highlightedLine).toBe(linetoBeHighlighted.element);
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expect(currentlyHighlighted.classes()).not.toContain(HIGHLIGHT_CLASS_NAME);
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expect(linetoBeHighlighted.classes()).toContain(HIGHLIGHT_CLASS_NAME);
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});
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});
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});
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});
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