public void ViewModel_WhenInitialized_WithRefreshOnCollectionUpdateNotification_ShouldRefresh(
IFixture fixture,
TestSchedulers scheduler,
int[] expectedValue)
{
//arrange
var notifications = scheduler.CreateColdObservable(OnNext(200, 1));
var observer = scheduler.CreateObserver<ObservableViewModelNotification>();
var sut = new UpdatableObservableViewModelBuilderOptions<int, int[], int>(
_ => { },
ct => Task.FromResult(expectedValue),
() => notifications,
scheduler,
scheduler,
scheduler)
.UpdateAction((i, o) => () => { })
.RefreshOnCollectionUpdateNotification()
.ToViewModel();
sut.Subscribe(observer);
//act
scheduler.Start();
//assert
var expected = new ObservableViewModelNotification()
{
Status = ObservableViewModelStatus.Value,
Value = expectedValue
};
observer.Values().Last().Value.As<ObservableCollection<int>>().ShouldAllBeEquivalentTo(expectedValue);
}
public async Task OnNext_WhenSubscribingThenPushingFirstValue_AndFirstValueIsDefaultValue_ShouldReturnCorrectValue(
TestSchedulers schedulers)
{
//arrange
var observer = schedulers.CreateObserver<int>();
var sut = new ObservableProperty<int>(schedulers);
var expected = sut.Value;
sut.Subscribe(observer);
//act
sut.OnNext(expected);
//assert
observer.Values().Last().Should().Be(expected);
}
public async Task ViewModel_WhenError_WithRefreshOnCollectionUpdateNotification_ShouldRefresh(
IFixture fixture,
TestSchedulers scheduler,
int[] expectedValue)
{
//arrange
var notifications = scheduler.CreateColdObservable(OnNext(200, 1));
var observer = scheduler.CreateObserver<ObservableViewModelNotification>();
var count = 0;
var sut = new UpdatableObservableViewModelBuilderOptions<int, int[], int>(
_ => { },
async ct =>
{
if (++count == 1)
throw new Exception();
else
return expectedValue;
},
() => notifications,
scheduler,
scheduler,
scheduler)
.UpdateAction((i, o) => () => { })
.RefreshOnCollectionUpdateNotification()
.ToViewModel();
sut.Subscribe(observer);
//act
await sut.RefreshAsync();
scheduler.AdvanceBy(300);
//assert
observer.Values().Last().Value.As<ObservableCollection<int>>().ShouldAllBeEquivalentTo(expectedValue);
}
public void CanExecuteChanged_WhenObservableYieldValue_ShouldYieldValue(
[Frozen]Subject<bool> canExecuteObservable,
[Frozen]Mock<ICanExecuteStrategy<object>> inner,
ObserveCanExecuteStrategy<object> sut,
TestSchedulers schedulers,
object arg)
{
//arrange
var observer = schedulers.CreateObserver<Unit>();
sut.CanExecuteChanged.Subscribe(observer);
//act
canExecuteObservable.OnNext(true);
//assert
observer.Values().Should().HaveCount(1);
}