/*
    * 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.
   */
  
  package org.apache.commons.proxy2.impl;
  
  import static org.junit.Assert.assertArrayEquals;
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertTrue;
  
  import java.lang.reflect.Method;
  
  import org.apache.commons.lang3.SerializationUtils;
  import org.apache.commons.proxy2.util.AbstractEcho;
  import org.apache.commons.proxy2.util.AbstractTestCase;
  import org.apache.commons.proxy2.util.DuplicateEcho;
  import org.apache.commons.proxy2.util.Echo;
  import org.apache.commons.proxy2.util.EchoImpl;
  import org.junit.Test;
  
  public class MethodSignatureTest extends AbstractTestCase
  {
      //**********************************************************************************************************************
      // Other Methods
      //**********************************************************************************************************************
  
      @Test
      public void testEquals() throws Exception
      {
          final MethodSignature sig = new MethodSignature(Echo.class.getMethod("echoBack", String.class));
          assertTrue(sig.equals(sig));
          assertFalse(sig.equals("echoBack"));
          assertEquals(sig, new MethodSignature(Echo.class.getMethod("echoBack", String.class)));
          assertEquals(sig, new MethodSignature(DuplicateEcho.class.getMethod("echoBack", String.class)));
          assertFalse(sig.equals(new MethodSignature(Echo.class.getMethod("echoBack", String.class, String.class))));
          assertFalse(sig.equals(new MethodSignature(Echo.class.getMethod("echo"))));
      }
  
      @Test
      public void testSerialization() throws Exception
      {
          final MethodSignature sig = new MethodSignature(Echo.class.getMethod("echoBack", String.class));
          assertEquals(sig, SerializationUtils.clone(sig));
      }
  
      @Test
      public void testToString() throws Exception
      {
          assertEquals("echo()", new MethodSignature(Echo.class.getMethod("echo")).toString());
          assertEquals("echoBack(Ljava/lang/String;)",
                  new MethodSignature(Echo.class.getMethod("echoBack", String.class)).toString());
          assertEquals("echoBack([Ljava/lang/String;)",
                  new MethodSignature(Echo.class.getMethod("echoBack", String[].class)).toString());
          assertEquals("echoBack([[Ljava/lang/String;)",
                  new MethodSignature(Echo.class.getMethod("echoBack", String[][].class)).toString());
          assertEquals("echoBack([[[Ljava/lang/String;)",
                  new MethodSignature(Echo.class.getMethod("echoBack", String[][][].class)).toString());
          assertEquals("echoBack(I)", new MethodSignature(Echo.class.getMethod("echoBack", int.class)).toString());
          assertEquals("echoBack(Z)", new MethodSignature(Echo.class.getMethod("echoBack", boolean.class)).toString());
          assertEquals("echoBack(Ljava/lang/String;Ljava/lang/String;)",
                  new MethodSignature(Echo.class.getMethod("echoBack", String.class, String.class)).toString());
          assertEquals("illegalArgument()", new MethodSignature(Echo.class.getMethod("illegalArgument")).toString());
          assertEquals("ioException()", new MethodSignature(Echo.class.getMethod("ioException")).toString());
      }
  
      @Test
      public void testToMethod() throws Exception
      {
          final MethodSignature sig = new MethodSignature(Echo.class.getMethod("echoBack", String.class));
  
          assertMethodIs(sig.toMethod(Echo.class), Echo.class, "echoBack", String.class);
          assertMethodIs(sig.toMethod(AbstractEcho.class), AbstractEcho.class, "echoBack", String.class);
          assertMethodIs(sig.toMethod(EchoImpl.class), AbstractEcho.class, "echoBack", String.class);
          assertMethodIs(sig.toMethod(DuplicateEcho.class), DuplicateEcho.class, "echoBack", String.class);
      }
  
      private void assertMethodIs(Method method, Class<?> declaredBy, String name, Class<?>... parameterTypes)
      {
          assertEquals(declaredBy, method.getDeclaringClass());
          assertEquals(name, method.getName());
          assertArrayEquals(parameterTypes, method.getParameterTypes());
      }
  }