| /* |
| * 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.struts2; |
| |
| import java.io.InputStream; |
| import java.net.URL; |
| import java.net.URLClassLoader; |
| import java.util.StringTokenizer; |
| |
| /** |
| * Utility methods for test classes |
| * |
| */ |
| public class TestUtils { |
| /** |
| * normalizes a string so that strings generated on different platforms can be compared. any group of one or more |
| * space, tab, \r, and \n characters are converted to a single space character |
| * |
| * @param obj the object to be normalized. normalize will perform its operation on obj.toString().trim() ; |
| * @param appendSpace |
| * @return the normalized string |
| */ |
| public static String normalize(Object obj, boolean appendSpace) { |
| StringTokenizer st = |
| new StringTokenizer(obj.toString().trim(), " \t\r\n"); |
| StringBuilder buffer = new StringBuilder(128); |
| |
| while(st.hasMoreTokens()) { |
| buffer.append(st.nextToken()); |
| } |
| |
| return buffer.toString(); |
| } |
| |
| |
| public static String normalize(URL url) throws Exception { |
| return normalize(readContent(url), true); |
| } |
| /** |
| * Attempt to verify the contents of text against the contents of the URL specified. Performs a |
| * trim on both ends |
| * |
| * @param url the HTML snippet that we want to validate against |
| * @throws Exception if the validation failed |
| */ |
| public static boolean compare(URL url, String text) |
| throws Exception { |
| /** |
| * compare the trimmed values of each buffer and make sure they're equivalent. however, let's make sure to |
| * normalize the strings first to account for line termination differences between platforms. |
| */ |
| String writerString = TestUtils.normalize(text, true); |
| String bufferString = TestUtils.normalize(readContent(url), true); |
| |
| return bufferString.equals(writerString); |
| } |
| |
| |
| |
| public static String readContent(URL url) |
| throws Exception { |
| if(url == null) { |
| throw new Exception("unable to verify a null URL"); |
| } |
| |
| StringBuilder buffer = new StringBuilder(128); |
| try (InputStream in = url.openStream()) { |
| byte[] buf = new byte[4096]; |
| int nbytes; |
| |
| while ((nbytes = in.read(buf)) > 0) { |
| buffer.append(new String(buf, 0, nbytes)); |
| } |
| } |
| |
| return buffer.toString(); |
| } |
| } |