#region Apache License
//
// 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.
//
#endregion

using log4net.Appender;
using log4net.Config;
using log4net.Core;

using NUnit.Framework;

namespace log4net.Tests.Appender
{
  /// <summary>
  /// Used for internal unit testing the <see cref="BufferingAppenderSkeleton"/> class.
  /// </summary>
  [TestFixture]
  public class BufferingAppenderTest
  {
    private BufferingForwardingAppender m_bufferingForwardingAppender = new();
    private CountingAppender m_countingAppender = new();
    private Repository.Hierarchy.Hierarchy m_hierarchy = new();

    private void SetupRepository()
    {
      m_hierarchy = new Repository.Hierarchy.Hierarchy();
      
      m_countingAppender = new CountingAppender();
      m_countingAppender.ActivateOptions();

      m_bufferingForwardingAppender = new BufferingForwardingAppender();
      m_bufferingForwardingAppender.AddAppender(m_countingAppender);

      m_bufferingForwardingAppender.BufferSize = 0;
      m_bufferingForwardingAppender.ClearFilters();
      m_bufferingForwardingAppender.Evaluator = null;
      m_bufferingForwardingAppender.Fix = FixFlags.Partial;
      m_bufferingForwardingAppender.Lossy = false;
      m_bufferingForwardingAppender.LossyEvaluator = null;
      m_bufferingForwardingAppender.Threshold = Level.All;

      m_bufferingForwardingAppender.ActivateOptions();

      BasicConfigurator.Configure(m_hierarchy, m_bufferingForwardingAppender);
    }

    [Test]
    public void TestSetupAppender()
    {
      SetupRepository();

      Assert.AreEqual(0, m_countingAppender.Counter, "Test empty appender");

      ILogger logger = m_hierarchy.GetLogger("test");
      logger.Log(typeof(BufferingAppenderTest), Level.Warn, "Message logged", null);

      Assert.AreEqual(1, m_countingAppender.Counter, "Test 1 event logged");
    }

    [Test]
    public void TestBufferSize5()
    {
      SetupRepository();

      m_bufferingForwardingAppender.BufferSize = 5;
      m_bufferingForwardingAppender.ActivateOptions();

      Assert.AreEqual(m_countingAppender.Counter, 0);

      ILogger logger = m_hierarchy.GetLogger("test");

      logger.Log(typeof(BufferingAppenderTest), Level.Warn, "Message 1", null);
      Assert.AreEqual(0, m_countingAppender.Counter, "Test 1 event in buffer");
      logger.Log(typeof(BufferingAppenderTest), Level.Warn, "Message 2", null);
      Assert.AreEqual(0, m_countingAppender.Counter, "Test 2 event in buffer");
      logger.Log(typeof(BufferingAppenderTest), Level.Warn, "Message 3", null);
      Assert.AreEqual(0, m_countingAppender.Counter, "Test 3 event in buffer");
      logger.Log(typeof(BufferingAppenderTest), Level.Warn, "Message 4", null);
      Assert.AreEqual(0, m_countingAppender.Counter, "Test 4 event in buffer");
      logger.Log(typeof(BufferingAppenderTest), Level.Warn, "Message 5", null);
      Assert.AreEqual(0, m_countingAppender.Counter, "Test 5 event in buffer");
      logger.Log(typeof(BufferingAppenderTest), Level.Warn, "Message 6", null);
      Assert.AreEqual(6, m_countingAppender.Counter, "Test 0 event in buffer. 6 event sent");
      logger.Log(typeof(BufferingAppenderTest), Level.Warn, "Message 7", null);
      Assert.AreEqual(6, m_countingAppender.Counter, "Test 1 event in buffer. 6 event sent");
      logger.Log(typeof(BufferingAppenderTest), Level.Warn, "Message 8", null);
      Assert.AreEqual(6, m_countingAppender.Counter, "Test 2 event in buffer. 6 event sent");
    }
  }
}