patterntesting.runtime.exception.DetailedAssertionError Maven / Gradle / Ivy

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/*
 * $Id: DetailedAssertionError.java,v 1.2 2014/09/17 06:59:04 oboehm Exp $
 *
 * Copyright (c) 2013 by Oliver Boehm
 *
 * Licensed 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 orimplied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * (c)reated 02.01.2014 by oliver ([email protected])
 */

package patterntesting.runtime.exception;

import java.lang.reflect.InvocationTargetException;


/**
 * This is a kind of better {@link AssertionError} which gives you some more
 * details of the given cause. It was introduced because with in Java 6 you have
 * no constructor
 * {@link DetailedAssertionError#DetailedAssertionError(Object, Throwable)}.
 *
 * @author oliver
 * @since 1.4 (02.01.2014)
 */
public class DetailedAssertionError extends AssertionError {

    private static final long serialVersionUID = 20140102L;
    private final Throwable cause;

    /**
     * Instantiates a new detailed assertion error.
     *
     * @param detailMessage the detail message
     * @param cause the cause
     */
    public DetailedAssertionError(final Object detailMessage, final Throwable cause) {
        super(detailMessage);
        this.cause = cause;
    }

    /**
     * Gets the cause.
     *
     * @return the cause
     * @see java.lang.Throwable#getCause()
     */
    @Override
    public Throwable getCause() {
        if (this.cause instanceof InvocationTargetException) {
            Throwable origCause = this.cause.getCause();
            if (origCause != null) {
                return origCause;
            }
        }
        return this.cause;
    }

}