I created a recordSaga
function, its target is to record what actions have been dispatched during the saga.
export const recordSaga = async (saga, initialAction, state) => {
const dispatched = [];
const done = await runSaga(
{
dispatch: action => dispatched.push(action),
getState: () => state,
},
saga,
initialAction,
).done;
return {
dispatched,
done,
};
};
so let's say my saga is this one
export function* mySaga() {
const needToSave = yield select(needToSaveDocument);
if (needToSave) {
yield put(saveDocument());
yield take(SAVE_DOCUMENT_SUCCESS);
}
yield put(doSomethingElse())
}
I want to write two tests, which I expect to be the following
describe('mySaga', async () => {
it('test 1: no need to save', async () => {
const state = { needToSave: false }
const { dispatched } = await recordSaga(randomSaga, {}, state);
expect(dispatched).toEqual([
doSomethingElse()
])
})
it('test 2: need to save', async () => {
const state = { needToSave: true }
const { dispatched } = await recordSaga(randomSaga, {}, state);
expect(dispatched).toEqual([
saveDocument(),
doSomethingElse()
])
})
})
However, for the test 2 where there is a take
in between, and of course jest
(or its girlfriend jasmine
) is yelling at me: Timeout - Async callback was not invoked within timeout specified by jasmine.DEFAULT_TIMEOUT_INTERVAL.
I know it is because runSaga
is waiting for the take(SAVE_DOCUMENT_SUCCESS)
, but how can I mock that up ?
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