public void ThrowsWhenTheDeviceIsOffline()
{
var observables = createFetchObservables(Observable.Throw <ITestModel>(new OfflineException(new Exception())));
var state = new EnsureFetchSingletonSucceededState <ITestModel>();
Action startingState = () => state.Start(observables).Wait();
startingState.Should().Throw <OfflineException>();
}
public async Task ReturnsFailureResultWhenFetchingThrows(ApiException exception)
{
var fetchObservables = createFetchObservables(Observable.Throw <ITestModel>(exception));
var state = new EnsureFetchSingletonSucceededState <ITestModel>();
var transition = await state.Start(fetchObservables);
transition.Result.Should().Be(state.ErrorOccured);
}
public async Task ReturnsContinueResultWhenFetchingCompletes()
{
var fetchObservables = createFetchObservables(Observable.Return(new TestModel()));
var state = new EnsureFetchSingletonSucceededState <ITestModel>();
var transition = await state.Start(fetchObservables);
transition.Result.Should().Be(state.Done);
}
public void ThrowsIfFetchObservablePublishesTwice()
{
var fetchObservables = createFetchObservables(
Observable.Create <ITestModel>(observer =>
{
observer.OnNext(new TestModel());
observer.OnNext(new TestModel());
return(() => { });
}));
var state = new EnsureFetchSingletonSucceededState <ITestModel>();
Action fetchTwice = () => state.Start(fetchObservables).Wait();
fetchTwice.Should().Throw <InvalidOperationException>();
}