javascript - 已超出 Jest Call 重试次数

Question

我在以下测试中有错误。我的节点版本是:v12.10.0。有没有 setTimeout 的替代品？

   test('demo code', async () => {
        const cc = await projectSetup(project);
        const onNotification = jest.fn();
        cc.sendNotification();
        await waitForExpect(() => {
            expect(onNotification).toHaveBeenCalledTimes(2);
        });

    });

错误日志如下

Call retries were exceeded

  at ChildProcessWorker.initialize (../../../node_modules/jest-worker/build/workers/ChildProcessWorker.js:230:21)

Answer 1

只需添加 jest.useFakeTimers();在你的进口之后

...
jest.useFakeTimers();

test('demo code', async () => {
        const cc = await projectSetup(project);
        const onNotification = jest.fn();
        cc.sendNotification();
        await waitForExpect(() => {
            expect(onNotification).toHaveBeenCalledTimes(2);
        });

    });

它适用于我的代码