135 lines
3.9 KiB
JavaScript
135 lines
3.9 KiB
JavaScript
import waitForPromises from 'helpers/wait_for_promises';
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import initCopyAsGFM, { CopyAsGFM } from '~/behaviors/markdown/copy_as_gfm';
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describe('CopyAsGFM', () => {
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describe('CopyAsGFM.pasteGFM', () => {
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let target;
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beforeEach(() => {
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target = document.createElement('input');
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target.value = 'This is code: ';
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// needed for the underlying insertText to work
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document.execCommand = jest.fn(() => false);
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});
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// When GFM code is copied, we put the regular plain text
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// on the clipboard as `text/plain`, and the GFM as `text/x-gfm`.
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// This emulates the behavior of `getData` with that data.
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function callPasteGFM(data = { 'text/plain': 'code', 'text/x-gfm': '`code`' }) {
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const e = {
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originalEvent: {
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clipboardData: {
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getData(mimeType) {
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return data[mimeType] || null;
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},
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},
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},
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preventDefault() {},
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target,
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};
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CopyAsGFM.pasteGFM(e);
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}
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it('wraps pasted code when not already in code tags', () => {
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callPasteGFM();
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expect(target.value).toBe('This is code: `code`');
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});
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it('does not wrap pasted code when already in code tags', () => {
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target.value = 'This is code: `';
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callPasteGFM();
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expect(target.value).toBe('This is code: `code');
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});
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it('does not allow xss in x-gfm-html', () => {
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const testEl = document.createElement('div');
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jest.spyOn(document, 'createElement').mockReturnValueOnce(testEl);
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callPasteGFM({ 'text/plain': 'code', 'text/x-gfm-html': 'code<img/src/onerror=alert(1)>' });
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expect(testEl.innerHTML).toBe('code<img src="">');
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});
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});
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describe('CopyAsGFM.copyGFM', () => {
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// Stub getSelection to return a purpose-built object.
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const stubSelection = (html, parentNode) => ({
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getRangeAt: () => ({
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commonAncestorContainer: { tagName: parentNode },
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cloneContents: () => {
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const fragment = document.createDocumentFragment();
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const node = document.createElement('div');
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node.innerHTML = html;
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Array.from(node.childNodes).forEach((item) => fragment.appendChild(item));
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return fragment;
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},
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}),
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rangeCount: 1,
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});
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const clipboardData = {
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setData() {},
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};
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const simulateCopy = () => {
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const e = {
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originalEvent: {
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clipboardData,
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},
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preventDefault() {},
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stopPropagation() {},
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};
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CopyAsGFM.copyAsGFM(e, CopyAsGFM.transformGFMSelection);
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return waitForPromises();
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};
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beforeAll(() => {
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initCopyAsGFM();
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// Fake call to nodeToGfm so the import of lazy bundle happened
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return CopyAsGFM.nodeToGFM(document.createElement('div'));
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});
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beforeEach(() => jest.spyOn(clipboardData, 'setData'));
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describe('list handling', () => {
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it('uses correct gfm for unordered lists', async () => {
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const selection = stubSelection('<li>List Item1</li><li>List Item2</li>\n', 'UL');
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window.getSelection = jest.fn(() => selection);
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await simulateCopy();
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const expectedGFM = '* List Item1\n* List Item2';
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expect(clipboardData.setData).toHaveBeenCalledWith('text/x-gfm', expectedGFM);
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});
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it('uses correct gfm for ordered lists', async () => {
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const selection = stubSelection('<li>List Item1</li><li>List Item2</li>\n', 'OL');
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window.getSelection = jest.fn(() => selection);
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await simulateCopy();
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const expectedGFM = '1. List Item1\n1. List Item2';
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expect(clipboardData.setData).toHaveBeenCalledWith('text/x-gfm', expectedGFM);
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});
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});
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});
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describe('CopyAsGFM.quoted', () => {
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const sampleGFM = '* List 1\n* List 2\n\n`Some code`';
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it('adds quote char `> ` to each line', () => {
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const expectedQuotedGFM = '> * List 1\n> * List 2\n> \n> `Some code`';
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expect(CopyAsGFM.quoted(sampleGFM)).toEqual(expectedQuotedGFM);
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});
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});
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});
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