Redux saga yield put unit test not working - reactjs

Question

I looking to doc and some samples online, but still not working. I use Sinon for unit test, and I keep getting this error, stuck on this one so long, can't figure it out.
expected { Object (##redux-saga/IO, combinator, ...) } to deeply equal { Object (##redux-saga/IO, combinator, ...) }
My action
export const loadingStatus = (response) => {
return { type: "LOADING_STATUS", response };
};
My saga
export function* mySampleSaga() {
try {
yield put(loadingStatus('loading'));
yield delay(1000);
const config = yield select(getConfig);
const requestCall = new SendingRequest(config);
const linkRequests = yield select(getLinks);
const response = yield call(
[requestService, requestCall.sample],
"2020-01-01",
"2020-12-21"
);
const result = get(response, 'entities.requests', {});
yield put(success(result));
yield put(loadingStatus('done'));
} catch (error) {
yield put(sendError(error));
yield put(loadingStatus('done'));
}
}
My test
describe('sample saga', () => {
const config = {
sample: "123"
};
const linkRequests = ['12345', '5678910'];
it('should update request status - happy path', () => {
const gen = mySampleSaga();
expect(gen.next().value).to.deep.equal(put(loadingStatus('loading'))); // This keep getting error below
});
it('If saga has error', () => {
const gen = mySampleSaga();
const error = new Error('error');
gen.next();
expect(gen.next().value).to.deep.equal(put(sendError(error)));
expect(gen.next().value).to.deep.equal(put(loadingStatus('done')));
expect(gen.next().done).to.equal(true);
});
});