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    
018    package org.apache.commons.proxy.exception;
019    
020    import junit.framework.TestCase;
021    
022    /**
023     * @author James Carman
024     * @since 1.0
025     */
026    public abstract class AbstractExceptionClassTestCase extends TestCase
027    {
028        private final Class exceptionClass;
029    
030        public AbstractExceptionClassTestCase( Class exceptionClass )
031        {
032            this.exceptionClass = exceptionClass;
033        }
034    
035        public void testNoArgConstructor() throws Exception
036        {
037            Exception e = ( Exception )exceptionClass.getConstructor( new Class[] {} ).newInstance( new Object[] {} );
038            assertNull( e.getMessage() );
039            assertNull( e.getCause() );
040        }
041    
042        public void testMessageOnlyConstructor() throws Exception
043        {
044            final String message = "message";
045            Exception e = ( Exception )exceptionClass.getConstructor( new Class[] { String.class } ).newInstance( new Object[] { message } );
046            assertEquals( message, e.getMessage() );
047            assertNull( e.getCause() );
048        }
049    
050        public void testCauseOnlyConstructor() throws Exception
051        {
052            final Exception cause = new Exception();
053            Exception e = ( Exception )exceptionClass.getConstructor( new Class[] { Throwable.class } ).newInstance( new Object[] { cause } );
054            assertEquals( cause.toString(), e.getMessage() );
055            assertEquals( cause, e.getCause() );
056        }
057    
058        public void testMessageAndCauseConstructor() throws Exception
059        {
060            final Exception cause = new Exception();
061            final String message = "message";
062            Exception e = ( Exception )exceptionClass.getConstructor( new Class[] { String.class, Throwable.class } ).newInstance( new Object[] { message, cause } );
063            assertEquals( message, e.getMessage() );
064            assertEquals( cause, e.getCause() );
065        }
066    }