import * as emitter from '@/js/event';

test('mount variable to global', () => {
    expect(window.bsEmitter).toBeFrozen();
});

test('add listener and emit event', () => {
    const mockA = jest.fn();
    const mockB = jest.fn();

    emitter.on('a', mockA);
    emitter.on('b', mockB);

    emitter.emit('a');

    expect(mockA).toBeCalledTimes(1);
    expect(mockB).not.toBeCalled();
});