我正在与react-testing-library一起使用Jest,并且在模拟定时器的前进时遇到了以下警告:
console.error
Warning: An update to TimerProvider inside a test was not wrapped in act(...).
When testing, code that causes React state updates should be wrapped into act(...):
act(() => {
/* fire events that update state */
});
/* assert on the output */
搜索后,我发现了a video suggesting wrapping any calls to jest.advanceTimersByTime
in the act()
function。
act(() => jest.advanceTimesByTime(1000);
但是我正在使用TypeScript,现在对于如何解决由此产生的类型错误感到困惑:
TS2769:Type 'typeof jest' is not assignable to type 'void'.
如何正确修复此类型错误?
答案 0 :(得分:0)
我遇到了与您相同的问题,并使用花括号将其转换为常规函数可以防止类型错误:
act(() => {
jest.advanceTimersByTime(1000);
});