public void EnsureThatPausingStreamUpdatesBitsPerSecondToZero() {
byte[] inputContent = new byte[1024];
bool isMoreThanZeroReported = false;
bool isNotifiedZero = false;
using (var inputStream = new MemoryStream(inputContent))
using (var outputStream = new MemoryStream())
using (var underTest = new BandwidthNotifyingStream(inputStream)) {
underTest.PropertyChanged += delegate(object sender, System.ComponentModel.PropertyChangedEventArgs args) {
if ((sender as BandwidthNotifyingStream).BitsPerSecond > 0) {
isMoreThanZeroReported = true;
}
};
underTest.PropertyChanged += delegate(object sender, System.ComponentModel.PropertyChangedEventArgs args) {
if ((sender as BandwidthNotifyingStream).BitsPerSecond == 0) {
isNotifiedZero = true;
}
};
var task = Task.Factory.StartNew(() => {
underTest.CopyTo(outputStream);
System.Threading.Thread.Sleep(4200);
});
task.Wait(2200);
Assert.That(isMoreThanZeroReported, Is.True);
task.Wait();
Assert.That(underTest.BitsPerSecond, Is.EqualTo(0));
Assert.That(isNotifiedZero, Is.True);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="CmisSync.Lib.Streams.TransmissionStream"/> class.
/// </summary>
/// <param name="wrappedStream">Wrapped stream.</param>
/// <param name="transmission">Transmission object to be notified about changes and listened to events as well.</param>
public TransmissionStream(Stream wrappedStream, Transmission transmission) {
if (transmission == null) {
throw new ArgumentNullException("transmission");
}
this.abort = new AbortableStream(wrappedStream);
this.pause = new PausableStream(this.abort);
this.bandwidthNotify = new BandwidthNotifyingStream(this.pause);
this.progress = new ProgressStream(this.bandwidthNotify);
this.abort.PropertyChanged += (object sender, PropertyChangedEventArgs e) => {
var a = sender as AbortableStream;
if (e.PropertyName == Utils.NameOf(() => a.Exception)) {
transmission.Status = TransmissionStatus.ABORTED;
transmission.FailedException = a.Exception;
}
};
this.bandwidthNotify.PropertyChanged += (object sender, PropertyChangedEventArgs e) => {
var s = sender as BandwidthNotifyingStream;
if (e.PropertyName == Utils.NameOf(() => s.BitsPerSecond)) {
transmission.BitsPerSecond = s.BitsPerSecond;
}
};
this.progress.PropertyChanged += (object sender, PropertyChangedEventArgs e) => {
var p = sender as ProgressStream;
if (e.PropertyName == Utils.NameOf(() => p.Position)) {
transmission.Position = p.Position;
} else if (e.PropertyName == Utils.NameOf(() => p.Length)) {
transmission.Length = p.Length;
}
};
transmission.PropertyChanged += (object sender, PropertyChangedEventArgs e) => {
var t = sender as Transmission;
if (e.PropertyName == Utils.NameOf(() => t.Status)) {
if (t.Status == TransmissionStatus.ABORTING) {
this.abort.Abort();
this.pause.Resume();
} else if (t.Status == TransmissionStatus.PAUSED) {
this.pause.Pause();
} else if (t.Status == TransmissionStatus.TRANSMITTING) {
this.pause.Resume();
}
}
};
if (transmission.Status == TransmissionStatus.ABORTING || transmission.Status == TransmissionStatus.ABORTED) {
this.abort.Abort();
}
}
public void EnsureBandwidthIsReportedIfProgressIsShorterThanOneSecond() {
byte[] inputContent = new byte[1024];
bool isMoreThanZeroReported = false;
using (var inputStream = new MemoryStream(inputContent))
using (var outputStream = new MemoryStream())
using (var underTest = new BandwidthNotifyingStream(inputStream)) {
underTest.PropertyChanged += delegate(object sender, System.ComponentModel.PropertyChangedEventArgs args) {
if ((sender as BandwidthNotifyingStream).BitsPerSecond > 0) {
isMoreThanZeroReported = true;
}
};
underTest.CopyTo(outputStream);
Assert.That(outputStream.Length == inputContent.Length);
}
Assert.That(isMoreThanZeroReported, Is.True);
}
/// <summary>
/// Initializes a new instance of the <see cref="CmisSync.Lib.Streams.TransmissionStream"/> class.
/// </summary>
/// <param name="wrappedStream">Wrapped stream.</param>
/// <param name="transmission">Transmission object to be notified about changes and listened to events as well.</param>
public TransmissionStream(Stream wrappedStream, Transmission transmission)
{
if (transmission == null)
{
throw new ArgumentNullException("transmission");
}
this.abort = new AbortableStream(wrappedStream);
this.pause = new PausableStream(this.abort);
this.bandwidthNotify = new BandwidthNotifyingStream(this.pause);
this.progress = new ProgressStream(this.bandwidthNotify);
this.abort.PropertyChanged += (object sender, PropertyChangedEventArgs e) => {
var a = sender as AbortableStream;
if (e.PropertyName == Utils.NameOf(() => a.Exception))
{
transmission.Status = TransmissionStatus.ABORTED;
transmission.FailedException = a.Exception;
}
};
this.bandwidthNotify.PropertyChanged += (object sender, PropertyChangedEventArgs e) => {
var s = sender as BandwidthNotifyingStream;
if (e.PropertyName == Utils.NameOf(() => s.BitsPerSecond))
{
transmission.BitsPerSecond = s.BitsPerSecond;
}
};
this.progress.PropertyChanged += (object sender, PropertyChangedEventArgs e) => {
var p = sender as ProgressStream;
if (e.PropertyName == Utils.NameOf(() => p.Position))
{
transmission.Position = p.Position;
}
else if (e.PropertyName == Utils.NameOf(() => p.Length))
{
transmission.Length = p.Length;
}
};
transmission.PropertyChanged += (object sender, PropertyChangedEventArgs e) => {
var t = sender as Transmission;
if (e.PropertyName == Utils.NameOf(() => t.Status))
{
if (t.Status == TransmissionStatus.ABORTING)
{
this.abort.Abort();
this.pause.Resume();
}
else if (t.Status == TransmissionStatus.PAUSED)
{
this.pause.Pause();
}
else if (t.Status == TransmissionStatus.TRANSMITTING)
{
this.pause.Resume();
}
}
};
if (transmission.Status == TransmissionStatus.ABORTING || transmission.Status == TransmissionStatus.ABORTED)
{
this.abort.Abort();
}
}
