public void RemoveAsyncInvalid()
{
IWatchListProvider provider = GetProvider();
Assert.Throws <ArgumentNullException> (() => provider.RemoveAsync(null, "buddyId"));
Assert.Throws <ArgumentNullException> (() => provider.RemoveAsync("ownerId", null));
}
public void RemoveAsync()
{
IWatchListProvider provider = GetProvider();
provider.AddAsync(personA, personB).Wait();
provider.AddAsync(personA, personC).Wait();
provider.RemoveAsync(personA.Identity, personB.Identity).Wait();
IEnumerable <Person> buddies = provider.GetWatchedAsync(personA.Identity).Result;
CollectionAssert.DoesNotContain(buddies, personB);
CollectionAssert.Contains(buddies, personC);
}