001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018package org.apache.commons.proxy2.impl;
019
020import static org.junit.Assert.assertArrayEquals;
021import static org.junit.Assert.assertEquals;
022import static org.junit.Assert.assertFalse;
023import static org.junit.Assert.assertTrue;
024
025import java.lang.reflect.Method;
026
027import org.apache.commons.lang3.SerializationUtils;
028import org.apache.commons.proxy2.util.AbstractEcho;
029import org.apache.commons.proxy2.util.AbstractTestCase;
030import org.apache.commons.proxy2.util.DuplicateEcho;
031import org.apache.commons.proxy2.util.Echo;
032import org.apache.commons.proxy2.util.EchoImpl;
033import org.junit.Test;
034
035public class MethodSignatureTest extends AbstractTestCase
036{
037    //**********************************************************************************************************************
038    // Other Methods
039    //**********************************************************************************************************************
040
041    @Test
042    public void testEquals() throws Exception
043    {
044        final MethodSignature sig = new MethodSignature(Echo.class.getMethod("echoBack", String.class));
045        assertTrue(sig.equals(sig));
046        assertFalse(sig.equals("echoBack"));
047        assertEquals(sig, new MethodSignature(Echo.class.getMethod("echoBack", String.class)));
048        assertEquals(sig, new MethodSignature(DuplicateEcho.class.getMethod("echoBack", String.class)));
049        assertFalse(sig.equals(new MethodSignature(Echo.class.getMethod("echoBack", String.class, String.class))));
050        assertFalse(sig.equals(new MethodSignature(Echo.class.getMethod("echo"))));
051    }
052
053    @Test
054    public void testSerialization() throws Exception
055    {
056        final MethodSignature sig = new MethodSignature(Echo.class.getMethod("echoBack", String.class));
057        assertEquals(sig, SerializationUtils.clone(sig));
058    }
059
060    @Test
061    public void testToString() throws Exception
062    {
063        assertEquals("echo()", new MethodSignature(Echo.class.getMethod("echo")).toString());
064        assertEquals("echoBack(Ljava/lang/String;)",
065                new MethodSignature(Echo.class.getMethod("echoBack", String.class)).toString());
066        assertEquals("echoBack([Ljava/lang/String;)",
067                new MethodSignature(Echo.class.getMethod("echoBack", String[].class)).toString());
068        assertEquals("echoBack([[Ljava/lang/String;)",
069                new MethodSignature(Echo.class.getMethod("echoBack", String[][].class)).toString());
070        assertEquals("echoBack([[[Ljava/lang/String;)",
071                new MethodSignature(Echo.class.getMethod("echoBack", String[][][].class)).toString());
072        assertEquals("echoBack(I)", new MethodSignature(Echo.class.getMethod("echoBack", int.class)).toString());
073        assertEquals("echoBack(Z)", new MethodSignature(Echo.class.getMethod("echoBack", boolean.class)).toString());
074        assertEquals("echoBack(Ljava/lang/String;Ljava/lang/String;)",
075                new MethodSignature(Echo.class.getMethod("echoBack", String.class, String.class)).toString());
076        assertEquals("illegalArgument()", new MethodSignature(Echo.class.getMethod("illegalArgument")).toString());
077        assertEquals("ioException()", new MethodSignature(Echo.class.getMethod("ioException")).toString());
078    }
079
080    @Test
081    public void testToMethod() throws Exception
082    {
083        final MethodSignature sig = new MethodSignature(Echo.class.getMethod("echoBack", String.class));
084
085        assertMethodIs(sig.toMethod(Echo.class), Echo.class, "echoBack", String.class);
086        assertMethodIs(sig.toMethod(AbstractEcho.class), AbstractEcho.class, "echoBack", String.class);
087        assertMethodIs(sig.toMethod(EchoImpl.class), AbstractEcho.class, "echoBack", String.class);
088        assertMethodIs(sig.toMethod(DuplicateEcho.class), DuplicateEcho.class, "echoBack", String.class);
089    }
090
091    private void assertMethodIs(Method method, Class<?> declaredBy, String name, Class<?>... parameterTypes)
092    {
093        assertEquals(declaredBy, method.getDeclaringClass());
094        assertEquals(name, method.getName());
095        assertArrayEquals(parameterTypes, method.getParameterTypes());
096    }
097}