core/src/test/java/org/apache/commons/proxy2/TestProxyUtils.java

/*
 * 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;

import junit.framework.TestCase;
import org.apache.commons.proxy2.util.DuplicateEcho;
import org.apache.commons.proxy2.util.Echo;
import org.apache.commons.proxy2.util.EchoImpl;

import java.io.Serializable;
import java.util.Arrays;
import java.util.Properties;

public class TestProxyUtils extends TestCase
{
//**********************************************************************************************************************
// Fields
//**********************************************************************************************************************

    private Properties prevProperties;

//**********************************************************************************************************************
// Other Methods
//**********************************************************************************************************************

    protected void setUp() throws Exception
    {
        prevProperties = System.getProperties();
        System.setProperties(new Properties());
    }

    protected void tearDown() throws Exception
    {
        System.setProperties(prevProperties);
    }

    public void testNullValue()
    {
        assertNullValue(null, String.class);
        assertNullValue(( char ) 0, Character.TYPE);
        assertNullValue(0, Integer.TYPE);
        assertNullValue(( long ) 0, Long.TYPE);
        assertNullValue(( short ) 0, Short.TYPE);
        assertNullValue(( double ) 0, Double.TYPE);
        assertNullValue(( float ) 0, Float.TYPE);
        assertNullValue(false, Boolean.TYPE);
        assertNullValue(( byte ) 0, Byte.TYPE);
    }

    private void assertNullValue( Object expected, Class<?> type )
    {
        assertEquals(expected, ProxyUtils.nullValue(type));
    }

    public void testCreateNullObject() throws Exception
    {
        /*final Echo nullEcho = ( Echo ) ProxyUtils
                .createNullObject(new JavassistProxyFactory(), new Class[] {Echo.class});
        assertNull(nullEcho.echoBack("hello"));
        assertNull(nullEcho.echoBack("hello", "world"));
        assertEquals(( int ) 0, nullEcho.echoBack(12345));*/
    }

    public void testCreateNullObjectWithClassLoader() throws Exception
    {
        /*final Echo nullEcho = ( Echo ) ProxyUtils.createNullObject(new JavassistProxyFactory(),
                                                                   Echo.class.getClassLoader(),
                                                                   new Class[] {Echo.class});
        assertNull(nullEcho.echoBack("hello"));
        assertNull(nullEcho.echoBack("hello", "world"));
        assertEquals(( int ) 0, nullEcho.echoBack(12345));*/
    }

    public void testGetAllInterfaces()
    {
        assertNull(ProxyUtils.getAllInterfaces(null));
        assertEquals(Arrays.asList(new Class[] {DuplicateEcho.class, Serializable.class, Echo.class}),
                     Arrays.asList(ProxyUtils.getAllInterfaces(EchoImpl.class)));
    }

    public void testGetJavaClassName() throws Exception
    {
        assertEquals("java.lang.Object[]", ProxyUtils.getJavaClassName(Object[].class));
        assertEquals("java.lang.Object[][]", ProxyUtils.getJavaClassName(Object[][].class));
        assertEquals("java.lang.String[][][]", ProxyUtils.getJavaClassName(String[][][].class));
        assertEquals("int", ProxyUtils.getJavaClassName(Integer.TYPE));
        assertEquals("float", ProxyUtils.getJavaClassName(Float.TYPE));
        assertEquals("long", ProxyUtils.getJavaClassName(Long.TYPE));
        assertEquals("double", ProxyUtils.getJavaClassName(Double.TYPE));
        assertEquals("short", ProxyUtils.getJavaClassName(Short.TYPE));
        assertEquals("byte", ProxyUtils.getJavaClassName(Byte.TYPE));
        assertEquals("char", ProxyUtils.getJavaClassName(Character.TYPE));
        assertEquals("boolean", ProxyUtils.getJavaClassName(Boolean.TYPE));
    }
}