public void TestCombinedStream()
{
DisposableFlag f1 = new DisposableFlag();
DisposableFlag f2 = new DisposableFlag();
Assert.IsFalse(f1.Disposed || f2.Disposed);
Stream ms1 = new DisposingStream(new MemoryStream(Encoding.ASCII.GetBytes("Hello"))).WithDisposeOf(f1);
Stream ms2 = new DisposingStream(new MemoryStream(Encoding.ASCII.GetBytes("There"))).WithDisposeOf(f2);
Assert.AreEqual(ms1.Length, ms2.Length);
int size = (int)ms1.Length;
byte[] bytes = new byte[size * 2];
using (Stream cs = new CombinedStream(ms1, ms2))
{
Assert.IsTrue(cs.CanRead);
Assert.IsFalse(f1.Disposed);
Assert.AreEqual(size, cs.Read(bytes, 0, size));
Assert.IsFalse(f1.Disposed); //still not disposed util read of 0 bytes
Assert.AreEqual(1, cs.Read(bytes, size, 1)); //read 1 more byte
Assert.IsTrue(f1.Disposed);
//now finish the second one...
Assert.IsFalse(f2.Disposed);
Assert.AreEqual(size - 1, cs.Read(bytes, size + 1, size - 1));
Assert.IsFalse(f2.Disposed);//still not done
Assert.AreEqual(-1, cs.ReadByte());
Assert.IsTrue(f2.Disposed);
}
Assert.AreEqual("HelloThere", Encoding.ASCII.GetString(bytes));
//both were disposed
Assert.IsTrue(f1.Disposed && f2.Disposed);
}