IOExceptionWithCauseTestCase.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.io;

import junit.framework.TestCase;

/**
 * Tests IOExceptionWithCause
 * 
 * @author <a href="mailto:ggregory@seagullsw.com">Gary Gregory</a>
 * @version $Id: $
 */
public class IOExceptionWithCauseTestCase extends TestCase {

    /**
     * Tests the {@link IOExceptionWithCause#IOExceptionWithCause(String,Throwable)} constructor.
     */
    public void testIOExceptionStringThrowable() {
        Throwable cause = new IllegalArgumentException("cause");
        IOExceptionWithCause exception = new IOExceptionWithCause("message", cause);
        this.validate(exception, cause, "message");
    }

    /**
     * Tests the {@link IOExceptionWithCause#IOExceptionWithCause(Throwable)} constructor.
     */
    public void testIOExceptionThrowable() {
        Throwable cause = new IllegalArgumentException("cause");
        IOExceptionWithCause exception = new IOExceptionWithCause(cause);
        this.validate(exception, cause, "java.lang.IllegalArgumentException: cause");
    }

    void validate(Throwable throwable, Throwable expectedCause, String expectedMessage) {
        assertEquals(expectedMessage, throwable.getMessage());
        assertEquals(expectedCause, throwable.getCause());
        assertSame(expectedCause, throwable.getCause());
    }
}