public static TestObserver <T> CreateTestObserver <T>(this IObservable <T> observable, TestScheduler testScheduler)
{
var observer = new TestObserver <T>();
observable
.SubscribeOn(testScheduler)
.ObserveOn(testScheduler)
.Subscribe(observer);
testScheduler.Start();
return(observer);
}
public static void AssertCompleted <T>(this TestObserver <T> observer)
{
observer.IsCompleted.Should().BeTrue("Observable should be in completed state");
}
public static void AssertValuesCount <T>(this TestObserver <T> observer, int expectedCount)
{
observer.ReceivedValues.Should().HaveCount(expectedCount, $"Observable should returns {expectedCount} values");
}
public static void AssertPredicate <T>(this TestObserver <T> observer, Func <IEnumerable <T>, bool> preficate)
{
preficate.Invoke(observer.ReceivedValues).Should().BeTrue("Observable should match predicate");
}
public static void AssertNoErrors <T>(this TestObserver <T> observer)
{
observer.ReceivedError.Should().BeNull("Observable should not raise any exception");
}
