| // Copyright 2006 The Apache Software Foundation |
| // |
| // Licensed 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.tapestry5.internal.services; |
| |
| import org.apache.tapestry5.internal.test.InternalBaseTestCase; |
| import org.apache.tapestry5.services.ResourceDigestGenerator; |
| import org.testng.annotations.Test; |
| |
| import java.io.*; |
| import java.net.URL; |
| import java.util.Arrays; |
| |
| public class ResourceDigestGeneratorImplTest extends InternalBaseTestCase |
| { |
| @Test |
| public void typical_file() throws Exception |
| { |
| URL url = getClass().getResource("ResourceDigestGeneratorImplTest.class"); |
| |
| ResourceDigestGenerator g = new ResourceDigestGeneratorImpl(Arrays.asList("class")); |
| |
| String digest = g.generateDigest(url); |
| |
| assertTrue(digest.length() > 0); |
| |
| String checksum2 = g.generateDigest(url); |
| |
| assertEquals(checksum2, digest); |
| } |
| |
| @Test |
| public void digest_changes_with_changes_to_file() throws Exception |
| { |
| File file = File.createTempFile("digest.", ".dat"); |
| |
| URL url = file.toURL(); |
| |
| ResourceDigestGenerator g = new ResourceDigestGeneratorImpl(Arrays.asList("class")); |
| |
| String prevDigest = g.generateDigest(url); |
| |
| for (int i = 0; i < 5; i++) |
| { |
| writeJunkTofile(file); |
| |
| String digest = g.generateDigest(url); |
| |
| assertFalse(digest.equals(prevDigest)); |
| |
| prevDigest = digest; |
| |
| } |
| } |
| |
| private void writeJunkTofile(File file) throws IOException |
| { |
| OutputStream os = new BufferedOutputStream(new FileOutputStream(file, true)); |
| |
| OutputStreamWriter writer = new OutputStreamWriter(os); |
| |
| for (int i = 0; i < 1000; i++) |
| writer.write("All work and no play makes Jack a dull boy. "); |
| |
| writer.close(); |
| } |
| } |