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    package org.apache.camel.util;
018    
019    import org.apache.camel.Exchange;
020    import org.apache.camel.Predicate;
021    
022    /**
023     * A helper for doing {@link Predicate} assertions.
024     *
025     * @version $Revision: 752893 $
026     */
027    public final class PredicateAssertHelper {
028    
029        private PredicateAssertHelper() {
030            // Utility class
031        }
032    
033        public static void assertMatches(Predicate predicate, String text, Exchange exchange) {
034            if (!predicate.matches(exchange)) {
035                if (text == null) {
036                    throw new AssertionError(predicate + " on " + exchange);
037                } else {
038                    throw new AssertionError(text + predicate + " on " + exchange);
039                }
040            }
041    
042        }
043    
044    }