public void Error()
{
using (StringWriter writer = new StringWriter())
{
using (TextWriterTraceListener listener = new TextWriterTraceListener(writer))
{
Debug.Listeners.Add(listener);
DebugStream output = new DebugStream();
output.Error("this is an error");
}
Assert.AreEqual("ERROR:this is an error", writer.ToString().Trim());
}
}
