public int Count()
{
if (!IsTerminal())
{
MakeTerminal();
}
// recurse further down and take max value of currently read
if (_parentStream != null)
{
return(Math.Max(_currentlyRead - _offset, _parentStream.Count()));
}
return(_currentlyRead - _offset);
}
public void TestStringStream_Observed_Replay_Mapped_Copy_InterruptedSupply()
{
ReplaySubject <string> subject = new ReplaySubject <string>();
Stream <string> stream = new Stream <string>(subject.AsObservable());
int mappingsHit = 0;
IStream <string> mappedStream = stream.Map(s =>
{
Debug.WriteLine("mapping " + s);
mappingsHit++;
return("m" + s);
});
IStream <string> copyStream = mappedStream.Copy();
for (int i = 0; i < 100; i++)
{
subject.OnNext(i.ToString());
}
for (int i = 0; i < 50; i++)
{
Assert.AreEqual("m" + i, copyStream.Read());
}
Assert.AreEqual(50, mappingsHit);
for (int i = 100; i < 200; i++)
{
subject.OnNext(i.ToString());
}
for (int i = 50; i < 200; i++)
{
Assert.AreEqual("m" + i, copyStream.Read());
}
Assert.AreEqual(200, mappingsHit);
Assert.AreEqual(200, copyStream.Count());
}
public void TestSensorMultipleStreamCreation()
{
Sensor <FileInfo> sensor = Sensor <FileInfo> .Create(
FileSensor.Create,
SensorParams.Create(
SensorParams.Keys.Path, "", ResourceLocator.Path(typeof(Resources), "rec-center-hourly-small.Csv")));
HTMSensor <FileInfo> htmSensor = (HTMSensor <FileInfo>)sensor;
htmSensor.InitEncoder(GetTestEncoderParams());
// Ensure that the HTMSensor's output stream can be retrieved more than once.
IStream <int[]> outputStream = htmSensor.GetOutputStream();
IStream <int[]> outputStream2 = htmSensor.GetOutputStream();
IStream <int[]> outputStream3 = htmSensor.GetOutputStream();
// Check to make sure above multiple retrieval doesn't flag the underlying stream as operated upon
Assert.IsFalse(htmSensor.IsTerminal());
Assert.AreEqual(17, outputStream.Count());
//After the above we cannot request a new stream, so this will fail
//however, the above streams that were already requested should be unaffected.
Assert.IsTrue(htmSensor.IsTerminal(), "Terminal sensor stream expected");
try
{
//@SuppressWarnings("unused")
IStream <int[]> outputStream4 = (Stream <int[]>)htmSensor.GetOutputStream();
Assert.Fail();
}
catch (Exception e)
{
Assert.AreEqual("Stream is already \"terminal\" (operated upon or empty)", e.Message);
}
//These Streams were created before operating on a stream
Assert.AreEqual(17, outputStream2.Count());
Assert.AreEqual(17, outputStream3.Count());
// Verify that different streams are retrieved.
Assert.IsFalse(outputStream.GetHashCode() == outputStream2.GetHashCode());
Assert.IsFalse(outputStream2.GetHashCode() == outputStream3.GetHashCode());
}
public void TestStringStream_Observed_Replay_Mapped_Copy()
{
ReplaySubject <string> subject = new ReplaySubject <string>();
Stream <string> stream = new Stream <string>(subject.AsObservable());
IStream <int[]> mappedStream = stream.Map(s => new int[int.Parse(s)]);
IStream <int[]> copyStream = mappedStream.Copy();
subject.OnNext("1");
Assert.IsTrue(new int[1].SequenceEqual(copyStream.Read()));
subject.OnNext("2");
Assert.IsTrue(new int[2].SequenceEqual(copyStream.Read()));
Assert.AreEqual(2, copyStream.Count());
}
public void TestStringStream_Observed_Replay_Mapped()
{
ReplaySubject <string> subject = new ReplaySubject <string>();
Stream <string> stream = new Stream <string>(subject.AsObservable());
IStream <int[]> mappedStream = stream.Map(s => new int[int.Parse(s)]);
subject.OnNext("1");
Debug.WriteLine("> Reading from mapped stream");
Assert.IsTrue(new int[1].SequenceEqual(mappedStream.Read()));
Debug.WriteLine("> Reading from base stream");
Assert.AreEqual(null, stream.Read());
subject.OnNext("2");
Debug.WriteLine("> Reading from base stream");
Assert.AreEqual("2", stream.Read());
Debug.WriteLine("> Reading from mapped stream");
Assert.AreEqual(null, mappedStream.Read());
Assert.AreEqual(2, stream.Count());
Assert.AreEqual(2, mappedStream.Count());
}