/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
*/

using System.Collections;
using System.Diagnostics;
using log4net.Util;
using NUnit.Framework;

namespace log4net.Tests.Util
{
	[TestFixture]
	public class LogLogTest
	{
		[Test]
		public void TraceListenerCounterTest()
		{
			TraceListenerCounter listTraceListener = new TraceListenerCounter();

			Trace.Listeners.Clear();
			Trace.Listeners.Add(listTraceListener);

			Trace.Write("Hello");
			Trace.Write("World");

			Assert.AreEqual(2, listTraceListener.Count);
		}

		[Test]
		public void EmitInternalMessages()
		{
			TraceListenerCounter listTraceListener = new TraceListenerCounter();
			Trace.Listeners.Clear();
			Trace.Listeners.Add(listTraceListener);
			LogLog.Error(GetType(), "Hello");
			LogLog.Error(GetType(), "World");
			Trace.Flush();
			Assert.AreEqual(2, listTraceListener.Count);

			try {
				LogLog.EmitInternalMessages = false;

				LogLog.Error(GetType(), "Hello");
				LogLog.Error(GetType(), "World");
				Assert.AreEqual(2, listTraceListener.Count);
			}
			finally {
				LogLog.EmitInternalMessages = true;
			}
		}

		[Test]
		public void LogReceivedAdapter()
		{
			ArrayList messages = new ArrayList();

			using (new LogLog.LogReceivedAdapter(messages))
			{
				LogLog.Debug(GetType(), "Won't be recorded");
				LogLog.Error(GetType(), "This will be recorded.");
				LogLog.Error(GetType(), "This will be recorded.");
			}

			Assert.AreEqual(2, messages.Count);
		}
	}

	public class TraceListenerCounter : TraceListener
	{
		private int count = 0;

		public override void Write(string message)
		{
			count++;
		}

		public override void WriteLine(string message)
		{
			Write(message);
		}

		public void Reset()
		{
			count = 0;
		}

		public int Count
		{
			get { return count; }
		}
	}
}