How to use put.resolve with function

[dangh]

Hello,

Is there any way to test the put.resolve when I pass it a Promise instead of object?

Here is my code:

const registry = new WeakMap()

const defer = action => {
  return dispatch => new Promise((resolve, reject) => {
    // register the callbacks and use it to resolve/reject later
    registry.set(action, {resolve, reject})
    dispatch(action)
  })
}

function* handleSaga() {
  const action = yield take('MY_ACTION')
  fetch('MY_API').then(
    result => registry.get(action).resolve(result),
    reason => registry.get(action).reject(reason)
  )
}

function* rootSaga() {
  yield put.resolve(defer({type: 'MY_ACTION'}))
}

And the test:

expectSaga(rootSaga)
  .put.resolve(defer({type: 'MY_ACTION'}))
  .run()

But it's failed because the result of defer() is a Promise, not a plain object.

I know I can create a middleware to handle the promise and put a plain object instead but I want to keep it simple.

Thanks.