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 */ 017package org.apache.camel.util; 018 019import org.apache.camel.BinaryPredicate; 020import org.apache.camel.Exchange; 021import org.apache.camel.Predicate; 022 023/** 024 * A helper for doing {@link Predicate} assertions. 025 * 026 * @version 027 */ 028public final class PredicateAssertHelper { 029 030 private PredicateAssertHelper() { 031 // Utility class 032 } 033 034 public static void assertMatches(Predicate predicate, String text, Exchange exchange) { 035 ObjectHelper.notNull(predicate, "predicate"); 036 ObjectHelper.notNull(exchange, "exchange"); 037 038 if (predicate instanceof BinaryPredicate) { 039 // with binary evaluations as we can get more detailed information 040 BinaryPredicate eval = (BinaryPredicate) predicate; 041 String evalText = eval.matchesReturningFailureMessage(exchange); 042 if (evalText != null) { 043 throw new AssertionError(text + predicate + " evaluated as: " + evalText + " on " + exchange); 044 } 045 } else { 046 doAssertMatches(predicate, text, exchange); 047 } 048 } 049 050 private static void doAssertMatches(Predicate predicate, String text, Exchange exchange) { 051 if (!predicate.matches(exchange)) { 052 if (text == null) { 053 throw new AssertionError(predicate + " on " + exchange); 054 } else { 055 throw new AssertionError(text + predicate + " on " + exchange); 056 } 057 } 058 } 059 060}