// Copyright (C) 2011 Philip Aston
   // All rights reserved.
   //
   // This file is part of The Grinder software distribution. Refer to
   // the file LICENSE which is part of The Grinder distribution for
   // licensing details. The Grinder distribution is available on the
   // Internet at http://grinder.sourceforge.net/
   //
   // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  // FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  // COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  // HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  // STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  // OF THE POSSIBILITY OF SUCH DAMAGE.
  
  package net.grinder.engine.process;
  
  import static java.lang.System.arraycopy;
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertSame;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.when;
  import static org.mockito.Mockito.withSettings;
  
  import java.lang.reflect.Method;
  import java.util.ArrayList;
  import java.util.List;
  
  import net.grinder.testutility.RandomObjectFactory;
  
  import org.junit.Before;
  import org.junit.Test;
  import org.mockito.Mock;
  import org.mockito.MockitoAnnotations;
  import org.mockito.invocation.InvocationOnMock;
  import org.mockito.listeners.InvocationListener;
  import org.mockito.listeners.MethodInvocationReport;
  import org.slf4j.Logger;
  import org.slf4j.Marker;
  
  
  /**
   * Unit tests for {@code ExternalLogger}.
   *
   * @author Philip Aston
   */
  public class TestExternalLogger {
  
    @Mock private Logger m_delegate;
    @Mock private ThreadContextLocator m_threadContextLocator;
    @Mock private ThreadContext m_threadContext;
    @Mock private Marker m_marker;
  
    @Before public void setUp() {
      MockitoAnnotations.initMocks(this);
    }
  
    @Test public void testGetName() {
      final Logger logger =
        new ExternalLogger(m_delegate, m_threadContextLocator);
  
      when(m_delegate.getName()).thenReturn("foo");
  
      assertEquals("foo", logger.getName());
    }
  
    @Test public void testDelegateMethodsTakingNoMarker() throws Exception {
  
      when(m_threadContextLocator.get()).thenReturn(m_threadContext);
      when(m_threadContext.getLogMarker()).thenReturn(m_marker);
  
      final List<InvocationOnMock> invocations =
        new ArrayList<InvocationOnMock>();
  
      final InvocationListener listeners = new InvocationListener() {
        public void reportInvocation(MethodInvocationReport report) {
          invocations.add((InvocationOnMock) report.getInvocation());
        }
      };
  
      final Logger delegate =
        mock(Logger.class, withSettings().invocationListeners(listeners));
  
      final ExternalLogger logger =
        new ExternalLogger(delegate, m_threadContextLocator);
  
      final Method[] allMethods = Logger.class.getDeclaredMethods();
  
      for (Method m : allMethods) {
        final Class<?>[] parameterTypes = m.getParameterTypes();
  
        if (parameterTypes.length > 0 && parameterTypes[0].equals(Marker.class)) {
         continue;
       }
 
       final Class<?>[] delegateTypes = new Class<?>[parameterTypes.length + 1];
 
       delegateTypes[0] = Marker.class;
       arraycopy(parameterTypes, 0, delegateTypes, 1, parameterTypes.length);
 
       final Method delegateMethod;
       try {
         delegateMethod = Logger.class.getMethod(m.getName(), delegateTypes);
       }
       catch (NoSuchMethodException e) {
         continue;
       }
 
       final RandomObjectFactory randomObjectFactory = new RandomObjectFactory();
 
       final List<Object> parameters = new ArrayList<Object>();
 
       for (Class<?> type : parameterTypes) {
         parameters.add(randomObjectFactory.generateParameter(type));
       }
 
       m.invoke(logger, parameters.toArray());
 
       final InvocationOnMock invocation = invocations.remove(0);
 
       assertEquals(delegateMethod, invocation.getMethod());
 
       int i = 0;
       final Object[] invokedArguments = invocation.getArguments();
 
       assertSame(m_marker, invokedArguments[0]);
 
       for (Object p : parameters) {
         assertSame(p, invokedArguments[++i]);
       }
     }
 
     assertEquals(0, invocations.size());
   }
 
   @Test public void testGetMarkerNullContext() {
     final Logger logger =
       new ExternalLogger(m_delegate, m_threadContextLocator);
 
     logger.isTraceEnabled();
 
     verify(m_delegate).isTraceEnabled(null);
   }
 }