| /* |
| * 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.util; |
| |
| import org.apache.commons.io.IOUtils; |
| import org.apache.commons.lang3.StringUtils; |
| import org.junit.Assert; |
| |
| import java.net.URL; |
| import java.nio.charset.Charset; |
| import java.nio.charset.StandardCharsets; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| /** |
| * Utility methods for test classes |
| */ |
| public class TestUtils { |
| |
| /** |
| * A regex pattern for recognizing blocks of whitespace characters. |
| */ |
| private static final Pattern WHITESPACE_BLOCK = Pattern.compile("\\s+"); |
| |
| /** |
| * 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 json the JSON to be normalized. normalize will trim before starting |
| * @param removeSpaces removes white spaces from the JSON or not |
| * @return the normalized string |
| */ |
| public static String normalize(String json, boolean removeSpaces) { |
| Matcher matcher = WHITESPACE_BLOCK.matcher(StringUtils.trim(json)); |
| if (removeSpaces) { |
| return matcher.replaceAll("").replaceAll(" ", ""); |
| } |
| return matcher.replaceAll(""); |
| } |
| |
| 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 void assertEquals(URL source, String text) throws Exception { |
| String writerString = TestUtils.normalize(text, true); |
| String bufferString = TestUtils.normalize(readContent(source), true); |
| Assert.assertEquals(bufferString, writerString); |
| } |
| |
| public static String readContent(URL url) throws Exception { |
| return readContent(url, StandardCharsets.UTF_8); |
| } |
| |
| public static String readContent(URL url, Charset encoding) throws Exception { |
| if (url == null) { |
| throw new IllegalArgumentException("Unable to verify a null URL"); |
| } |
| |
| if (encoding == null) { |
| throw new IllegalArgumentException("Unable to verify the URL using a null Charset"); |
| } |
| |
| return IOUtils.toString(url.openStream(), encoding); |
| } |
| |
| } |