message: update use event emitter test
diff: @@ -12,7 +12,10 @@ describe('useEventEmitter', () => {
  const event$ = useEventEmitter<number>();
  const [count, setCount] = useState(0);
  event$.useSubscription(val => {
  - setCount(count + val);
  + setCount(c => c + val);
  + });
  + event$.useSubscription(val => {
  + setCount(c => c + val + 10);
  });
  return {
  event$,
  @@ -20,17 +23,15 @@ describe('useEventEmitter', () => {
  };
  });
  - it('getKey should work', () => {
  + it('emit and subscribe should work', () => {
  const hook = setUp();
  act(() => {
  hook.result.current.event$.emit(1);
  });
  - expect(hook.result.current.count).toEqual(1);
  + expect(hook.result.current.count).toEqual(12);
  act(() => {
  hook.result.current.event$.emit(2);
  });
  - expect(hook.result.current.count).toEqual(3);
  - // expect(hook.result.current.getKey(1)).toEqual(1);
  - // expect(hook.result.current.getKey(2)).toEqual(2);
  + expect(hook.result.current.count).toEqual(26);
  });
  });
  