regexper-static/src/components/InstallPrompt/test.js
2019-03-26 21:12:35 -04:00

43 lines
1013 B
JavaScript

import React from 'react';
import { render, fireEvent } from 'react-testing-library';
import InstallPrompt from 'components/InstallPrompt';
describe('InstallPrompt', () => {
test('rendering', () => {
const { asFragment } = render(
<InstallPrompt />
);
expect(asFragment()).toMatchSnapshot();
});
test('rendering after an install prompt has been requested', () => {
const { asFragment } = render(
<InstallPrompt />
);
expect(asFragment()).toMatchSnapshot();
const event = new Event('beforeinstallprompt', {
prompt: jest.fn()
});
fireEvent(window, event);
expect(asFragment()).toMatchSnapshot();
});
test('removing event listener', () => {
jest.spyOn(window, 'addEventListener');
jest.spyOn(window, 'removeEventListener');
const { unmount } = render(
<InstallPrompt />
);
unmount();
expect(window.removeEventListener).toHaveBeenCalledWith(
'beforeinstallprompt',
expect.any(Function));
});
});