我想在解析promise之前测试应用程序的状态。我在beforeEach块中创建promise，所以我希望在promise解析之前执行所有测试。但是当测试被执行时，promise已经被解析，代码处于post promise状态。

// jest code
describe("sync beforeEach", () => {

    let promise;
    let state;

    beforeEach(() => {
        state = 'pending'
        promise = Promise.resolve().then(() => { state = 'resolved'; });
    });

    test('should run before resolve', async () => {
        // the promise is resolved and the bellow line fails.
        expect(state).toEqual('pending');
        await promise;
        expect(state).toEqual('resolved');
    });

});

我已经使用Jasmine实现了完全相同的测试，并且正如我所预期的那样。promise在测试之前不会被解析，因此测试通过。

// jasmine code
describe("sync beforeEach", () => {

    let promise;
    let state;

    beforeEach(() => {
        state = 'pending'
        promise = Promise.resolve().then(() => { state = 'resolved'; });
    });

    it('should run before resolve', async () => {
        // the promise is not resolved yet, so the bellow line pass
        expect(state).toEqual('pending');
        await promise;
        expect(state).toEqual('resolved');
    });

});

如何使用jest进行相同的测试？