import {showGlobalErrorMessage} from './bootstrap.ts'; test('showGlobalErrorMessage', () => { document.body.innerHTML = '<div class="page-content"></div>'; showGlobalErrorMessage('test msg 1'); showGlobalErrorMessage('test msg 2'); showGlobalErrorMessage('test msg 1'); // duplicated expect(document.body.innerHTML).toContain('>test msg 1 (2)<'); expect(document.body.innerHTML).toContain('>test msg 2<'); expect(document.querySelectorAll('.js-global-error').length).toEqual(2); });