public async Task ToListAsyncCorrectlyHandlesEmptyCollections()
{
var seq = new PagedAlphabet(4, 0);
var list = await seq.ToListAsync();
Assert.Empty(list);
}
public async Task ToListAsyncSupportsCancellation()
{
PagedAlphabet seq = new PagedAlphabet(4, 10);
//Call with an already cancelled cancellation token
using CancellationTokenSource source = new CancellationTokenSource();
source.Cancel();
await Assert.ThrowsAsync <OperationCanceledException>(async() => await seq.ToListAsync(source.Token));
}
public async Task ToListAsyncCollectsAllElementsOfSequence()
{
var seq = new PagedAlphabet(4, 10);
var list = await seq.ToListAsync();
Assert.Equal(10, list.Count);
Assert.Equal("A", list.First());
Assert.Equal("J", list.Last());
}