public async Task NoUnnecessaryAwaitersAreQueued()
{
_collections[1].Add(42);
var result = await AsyncCollection <int> .TakeFromAnyAsync(_collections).ConfigureAwait(true);
_collections[0].AwaiterCount.Should().Be(0);
}
public async Task ReturnsItemFromSecondIfFirstIsEmpty()
{
_collections[1].Add(42);
var result = await AsyncCollection <int> .TakeFromAnyAsync(_collections).ConfigureAwait(true);
result.Value.Should().Be(42);
result.CollectionIndex.Should().Be(1);
}
public async Task RespectsCollectionOrder()
{
_collections[0].Add(42);
_collections[1].Add(24);
var result = await AsyncCollection <int> .TakeFromAnyAsync(_collections).ConfigureAwait(true);
result.Value.Should().Be(42);
result.CollectionIndex.Should().Be(0);
}
public void DoesNothingIfTokenIsCanceledBeforeMethodCall()
{
CancellationTokenSource cancelSource = new CancellationTokenSource();
cancelSource.Cancel();
_collections[0].Add(42);
var task = AsyncCollection <int> .TakeFromAnyAsync(_collections, cancelSource.Token);
task.IsCanceled.Should().BeTrue();
_collections[0].Count.Should().Be(1);
}
public async Task ReturnsItemIfItIsAddedLater()
{
var task = AsyncCollection <int> .TakeFromAnyAsync(_collections);
task.IsCompleted.Should().BeFalse();
_collections[1].Add(42);
var result = await task.ConfigureAwait(true);
result.Value.Should().Be(42);
result.CollectionIndex.Should().Be(1);
}
public void CancelsTaskWhenTokenIsCanceled()
{
CancellationTokenSource cancelSource = new CancellationTokenSource();
var task = AsyncCollection <int> .TakeFromAnyAsync(_collections, cancelSource.Token);
cancelSource.Cancel();
Func <Task> asyncAct = () => task;
asyncAct.ShouldThrow <TaskCanceledException>();
_collections[0].Add(42);
_collections[1].Add(64);
_collections[0].Count.Should().Be(1);
_collections[1].Count.Should().Be(1);
}