public void CreateNext_HandlesExceptionsFromPreviousTokenRegistration()
{
using var series = new CancellationSeries();
var token1 = series.CreateNext();
var exception = new Exception();
token1.Register(() => throw exception);
var aggregateException = Assert.Throws <AggregateException>(() => series.CreateNext());
Assert.Same(exception, aggregateException.InnerExceptions.Single());
Assert.True(token1.IsCancellationRequested);
}
public void CreateNext_ThrowsIfDisposed()
{
var series = new CancellationSeries();
series.Dispose();
Assert.Throws <ObjectDisposedException>(() => series.CreateNext());
}
public void CreateNext_CancelsPreviousToken()
{
using var series = new CancellationSeries();
var token1 = series.CreateNext();
Assert.False(token1.IsCancellationRequested);
var token2 = series.CreateNext();
Assert.True(token1.IsCancellationRequested);
Assert.False(token2.IsCancellationRequested);
var token3 = series.CreateNext();
Assert.True(token2.IsCancellationRequested);
Assert.False(token3.IsCancellationRequested);
}
public void CreateNext_ReturnsNonCancelledToken()
{
using var series = new CancellationSeries();
var token = series.CreateNext();
Assert.False(token.IsCancellationRequested);
Assert.True(token.CanBeCanceled);
}
public void CreateNext_ReturnsCancelledTokenIfInputTokenAlreadyCancelled()
{
var cts = new CancellationTokenSource();
using var series = new CancellationSeries();
cts.Cancel();
var token = series.CreateNext(cts.Token);
Assert.True(token.IsCancellationRequested);
}
public void CancellingSuperTokenCancelsIssuedToken()
{
var cts = new CancellationTokenSource();
using var series = new CancellationSeries(cts.Token);
var token = series.CreateNext();
Assert.False(token.IsCancellationRequested);
cts.Cancel();
Assert.True(token.IsCancellationRequested);
}
