gitlab-org--gitlab-foss/spec/frontend/lib/utils/text_markdown_spec.js

308 lines
8.6 KiB
JavaScript

import { insertMarkdownText } from '~/lib/utils/text_markdown';
describe('init markdown', () => {
let textArea;
beforeAll(() => {
textArea = document.createElement('textarea');
document.querySelector('body').appendChild(textArea);
textArea.focus();
});
afterAll(() => {
textArea.parentNode.removeChild(textArea);
});
describe('textArea', () => {
describe('without selection', () => {
it('inserts the tag on an empty line', () => {
const initialValue = '';
textArea.value = initialValue;
textArea.selectionStart = 0;
textArea.selectionEnd = 0;
insertMarkdownText({
textArea,
text: textArea.value,
tag: '*',
blockTag: null,
selected: '',
wrap: false,
});
expect(textArea.value).toEqual(`${initialValue}* `);
});
it('inserts the tag on a new line if the current one is not empty', () => {
const initialValue = 'some text';
textArea.value = initialValue;
textArea.setSelectionRange(initialValue.length, initialValue.length);
insertMarkdownText({
textArea,
text: textArea.value,
tag: '*',
blockTag: null,
selected: '',
wrap: false,
});
expect(textArea.value).toEqual(`${initialValue}\n* `);
});
it('inserts the tag on the same line if the current line only contains spaces', () => {
const initialValue = ' ';
textArea.value = initialValue;
textArea.setSelectionRange(initialValue.length, initialValue.length);
insertMarkdownText({
textArea,
text: textArea.value,
tag: '*',
blockTag: null,
selected: '',
wrap: false,
});
expect(textArea.value).toEqual(`${initialValue}* `);
});
it('inserts the tag on the same line if the current line only contains tabs', () => {
const initialValue = '\t\t\t';
textArea.value = initialValue;
textArea.setSelectionRange(initialValue.length, initialValue.length);
insertMarkdownText({
textArea,
text: textArea.value,
tag: '*',
blockTag: null,
selected: '',
wrap: false,
});
expect(textArea.value).toEqual(`${initialValue}* `);
});
it('places the cursor inside the tags', () => {
const start = 'lorem ';
const end = ' ipsum';
const tag = '*';
textArea.value = `${start}${end}`;
textArea.setSelectionRange(start.length, start.length);
insertMarkdownText({
textArea,
text: textArea.value,
tag,
blockTag: null,
selected: '',
wrap: true,
});
expect(textArea.value).toEqual(`${start}**${end}`);
// cursor placement should be between tags
expect(textArea.selectionStart).toBe(start.length + tag.length);
});
});
describe('with selection', () => {
const text = 'initial selected value';
const selected = 'selected';
beforeEach(() => {
textArea.value = text;
const selectedIndex = text.indexOf(selected);
textArea.setSelectionRange(selectedIndex, selectedIndex + selected.length);
});
it('applies the tag to the selected value', () => {
const selectedIndex = text.indexOf(selected);
const tag = '*';
insertMarkdownText({
textArea,
text: textArea.value,
tag,
blockTag: null,
selected,
wrap: true,
});
expect(textArea.value).toEqual(text.replace(selected, `*${selected}*`));
// cursor placement should be after selection + 2 tag lengths
expect(textArea.selectionStart).toBe(selectedIndex + selected.length + 2 * tag.length);
});
it('replaces the placeholder in the tag', () => {
insertMarkdownText({
textArea,
text: textArea.value,
tag: '[{text}](url)',
blockTag: null,
selected,
wrap: false,
});
expect(textArea.value).toEqual(text.replace(selected, `[${selected}](url)`));
});
describe('and text to be selected', () => {
const tag = '[{text}](url)';
const select = 'url';
it('selects the text', () => {
insertMarkdownText({
textArea,
text: textArea.value,
tag,
blockTag: null,
selected,
wrap: false,
select,
});
const expectedText = text.replace(selected, `[${selected}](url)`);
expect(textArea.value).toEqual(expectedText);
expect(textArea.selectionStart).toEqual(expectedText.indexOf(select));
expect(textArea.selectionEnd).toEqual(expectedText.indexOf(select) + select.length);
});
it('selects the right text when multiple tags are present', () => {
const initialValue = `${tag} ${tag} ${selected}`;
textArea.value = initialValue;
const selectedIndex = initialValue.indexOf(selected);
textArea.setSelectionRange(selectedIndex, selectedIndex + selected.length);
insertMarkdownText({
textArea,
text: textArea.value,
tag,
blockTag: null,
selected,
wrap: false,
select,
});
const expectedText = initialValue.replace(selected, `[${selected}](url)`);
expect(textArea.value).toEqual(expectedText);
expect(textArea.selectionStart).toEqual(expectedText.lastIndexOf(select));
expect(textArea.selectionEnd).toEqual(expectedText.lastIndexOf(select) + select.length);
});
it('should support selected urls', () => {
const expectedUrl = 'http://www.gitlab.com';
const expectedSelectionText = 'text';
const expectedText = `text [${expectedSelectionText}](${expectedUrl}) text`;
const initialValue = `text ${expectedUrl} text`;
textArea.value = initialValue;
const selectedIndex = initialValue.indexOf(expectedUrl);
textArea.setSelectionRange(selectedIndex, selectedIndex + expectedUrl.length);
insertMarkdownText({
textArea,
text: textArea.value,
tag,
blockTag: null,
selected: expectedUrl,
wrap: false,
select,
});
expect(textArea.value).toEqual(expectedText);
expect(textArea.selectionStart).toEqual(expectedText.indexOf(expectedSelectionText, 1));
expect(textArea.selectionEnd).toEqual(
expectedText.indexOf(expectedSelectionText, 1) + expectedSelectionText.length,
);
});
});
});
});
describe('Ace Editor', () => {
let editor;
beforeEach(() => {
editor = {
getSelectionRange: () => ({
start: 0,
end: 0,
}),
getValue: () => 'this is text \n in two lines',
insert: () => {},
navigateLeft: () => {},
};
});
it('uses ace editor insert text when editor is passed in', () => {
jest.spyOn(editor, 'insert').mockReturnValue();
insertMarkdownText({
text: editor.getValue,
tag: '*',
blockTag: null,
selected: '',
wrap: false,
editor,
});
expect(editor.insert).toHaveBeenCalled();
});
it('adds block tags on line above and below selection', () => {
jest.spyOn(editor, 'insert').mockReturnValue();
const selected = 'this text \n is multiple \n lines';
const text = `before \n ${selected} \n after`;
insertMarkdownText({
text,
tag: '',
blockTag: '***',
selected,
wrap: true,
editor,
});
expect(editor.insert).toHaveBeenCalledWith(`***\n${selected}\n***`);
});
it('uses ace editor to navigate back tag length when nothing is selected', () => {
jest.spyOn(editor, 'navigateLeft').mockReturnValue();
insertMarkdownText({
text: editor.getValue,
tag: '*',
blockTag: null,
selected: '',
wrap: true,
editor,
});
expect(editor.navigateLeft).toHaveBeenCalledWith(1);
});
it('ace editor does not navigate back when there is selected text', () => {
jest.spyOn(editor, 'navigateLeft').mockReturnValue();
insertMarkdownText({
text: editor.getValue,
tag: '*',
blockTag: null,
selected: 'foobar',
wrap: true,
editor,
});
expect(editor.navigateLeft).not.toHaveBeenCalled();
});
});
});