/*
* $Id$
*
* 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.json;
import org.junit.Assert;
import java.io.InputStream;
import java.net.URL;
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");
StringBuffer buffer = new StringBuffer(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 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 {
if (url == null)
throw new Exception("unable to verify a null URL");
StringBuffer buffer = new StringBuffer(128);
InputStream in = url.openStream();
byte[] buf = new byte[4096];
int nbytes;
while ((nbytes = in.read(buf)) > 0) {
buffer.append(new String(buf, 0, nbytes));
}
in.close();
return buffer.toString();
}
}