public void AddShouldAddTraceListenerToListOfTraceListeners()
{
var stringWriter = new StringWriter();
var traceListenerManager = new TraceListenerManager(stringWriter, stringWriter);
var traceListener = new TraceListenerWrapper(stringWriter);
var originalCount = Trace.Listeners.Count;
traceListenerManager.Add(traceListener);
var newCount = Trace.Listeners.Count;
Assert.AreEqual(originalCount + 1, newCount);
Assert.IsTrue(Trace.Listeners.Contains(traceListener));
}
public void DisposeShouldCallDisposeOnCorrespondingTraceListener()
{
var stringWriter = new StringWriter();
var traceListenerManager = new TraceListenerManager(stringWriter, stringWriter);
StringWriter writer = new StringWriter(new StringBuilder("DummyTrace"));
var traceListener = new TraceListenerWrapper(writer);
traceListenerManager.Add(traceListener);
traceListenerManager.Dispose(traceListener);
// Tring to write after closing textWriter should throw exception
Action shouldThrowException = () => writer.WriteLine("Try to write something");
ActionUtility.ActionShouldThrowExceptionOfType(shouldThrowException, typeof(ObjectDisposedException));
}
public void RemoveShouldRemoveTraceListenerFromListOfTraceListeners()
{
var stringWriter = new StringWriter();
var traceListenerManager = new TraceListenerManager(stringWriter, stringWriter);
var traceListener = new TraceListenerWrapper(stringWriter);
var originalCount = Trace.Listeners.Count;
traceListenerManager.Add(traceListener);
var countAfterAdding = Trace.Listeners.Count;
traceListenerManager.Remove(traceListener);
var countAfterRemoving = Trace.Listeners.Count;
Assert.AreEqual(originalCount + 1, countAfterAdding);
Assert.AreEqual(countAfterAdding - 1, countAfterRemoving);
Assert.IsFalse(Trace.Listeners.Contains(traceListener));
}
