/*
 * 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.
 *
*/

#if NET462_OR_GREATER
using System;
using System.Diagnostics;
using System.Reflection;
using log4net.Appender;
using log4net.Config;
using log4net.Core;
using log4net.Layout;
using log4net.Repository;
using NUnit.Framework;

namespace log4net.Tests.Appender
{
  [TestFixture]
  public class DebugAppenderTest
  {
    [Test]
    public void NullCategoryTest()
    {
      CategoryTraceListener categoryTraceListener = new CategoryTraceListener();
      Debug.Listeners.Add(categoryTraceListener);

      ILoggerRepository rep = LogManager.CreateRepository(Guid.NewGuid().ToString());

      DebugAppender debugAppender = new DebugAppender();
      debugAppender.Layout = new SimpleLayout();
      debugAppender.ActivateOptions();

      debugAppender.Category = null;

      TestErrorHandler testErrHandler = new TestErrorHandler();
      debugAppender.ErrorHandler = testErrHandler;

      BasicConfigurator.Configure(rep, debugAppender);

      ILog log = LogManager.GetLogger(rep.Name, GetType());
      log.Debug("Message");

      Assert.IsNull(categoryTraceListener.Category);

      Assert.IsFalse(testErrHandler.ErrorOccured);

      Debug.Listeners.Remove(categoryTraceListener);
    }

    [Test]
    public void EmptyStringCategoryTest()
    {
      CategoryTraceListener categoryTraceListener = new CategoryTraceListener();
      Debug.Listeners.Add(categoryTraceListener);

      ILoggerRepository rep = LogManager.CreateRepository(Guid.NewGuid().ToString());

      DebugAppender debugAppender = new DebugAppender();
      debugAppender.Layout = new SimpleLayout();
      debugAppender.ActivateOptions();

      debugAppender.Category = new PatternLayout("");

      BasicConfigurator.Configure(rep, debugAppender);

      ILog log = LogManager.GetLogger(rep.Name, GetType());
      log.Debug("Message");

      Assert.IsNull(categoryTraceListener.Category);

      Debug.Listeners.Remove(categoryTraceListener);
    }

    [Test]
    public void DefaultCategoryTest()
    {
      CategoryTraceListener categoryTraceListener = new CategoryTraceListener();
      Debug.Listeners.Add(categoryTraceListener);

      ILoggerRepository rep = LogManager.CreateRepository(Guid.NewGuid().ToString());

      DebugAppender debugAppender = new DebugAppender();
      debugAppender.Layout = new SimpleLayout();
      debugAppender.ActivateOptions();

      BasicConfigurator.Configure(rep, debugAppender);

      ILog log = LogManager.GetLogger(rep.Name, GetType());
      log.Debug("Message");

      Assert.AreEqual(
          GetType().ToString(),
          categoryTraceListener.Category);

      Debug.Listeners.Remove(categoryTraceListener);
    }

    [Test]
    public void MethodNameCategoryTest()
    {
      CategoryTraceListener categoryTraceListener = new CategoryTraceListener();
      Debug.Listeners.Add(categoryTraceListener);

      ILoggerRepository rep = LogManager.CreateRepository(Guid.NewGuid().ToString());

      DebugAppender debugAppender = new DebugAppender();
      PatternLayout methodLayout = new PatternLayout("%method");
      methodLayout.ActivateOptions();
      debugAppender.Category = methodLayout;
      debugAppender.Layout = new SimpleLayout();
      debugAppender.ActivateOptions();

      BasicConfigurator.Configure(rep, debugAppender);

      ILog log = LogManager.GetLogger(rep.Name, GetType());
      log.Debug("Message");

      Assert.AreEqual(
          MethodInfo.GetCurrentMethod().Name,
          categoryTraceListener.Category);

      Debug.Listeners.Remove(categoryTraceListener);
    }

    private sealed class TestErrorHandler : IErrorHandler
    {
      public bool ErrorOccured { get; private set; }

      public void Error(string message, Exception? e, ErrorCode errorCode)
      {
        ErrorOccured = true;
      }

      public void Error(string message, Exception e)
      {
        Error(message, e, ErrorCode.GenericFailure);
      }

      public void Error(string message)
      {
        Error(message, null, ErrorCode.GenericFailure);
      }
    }
  }
}
#endif