/**

  * Back 2 Browser Bytecode Translator

  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>

  *

  * This program is free software: you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation, version 2 of the License.

  *

  * This program is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  * GNU General Public License for more details.

  *

  * You should have received a copy of the GNU General Public License

  * along with this program. Look for COPYING file in the top folder.

  * If not, see http://opensource.org/licenses/GPL-2.0.

  */

 package org.apidesign.bck2brwsr.tck;

 import java.io.IOException;

 import java.io.InputStream;

 import java.net.URL;

 import java.util.Enumeration;

 import org.apidesign.bck2brwsr.vmtest.Compare;

 import org.apidesign.bck2brwsr.vmtest.VMTest;

 import org.testng.annotations.Factory;

 /**

  *

  * @author Jaroslav Tulach <jtulach@netbeans.org>

  */

 public class ResourcesTest {

     @Compare public String allManifests() throws Exception {

         Enumeration<URL> en = ClassLoader.getSystemResources("META-INF/MANIFEST.MF");

         assert en.hasMoreElements() : "Should have at least one manifest";

         String first = readString(en.nextElement().openStream());

         boolean different = false;

         int cnt = 1;

         while (en.hasMoreElements()) {

             URL url = en.nextElement();

             String now = readString(url.openStream());

             if (!first.equals(now)) {

                 different = true;

             }

             cnt++;

             if (cnt > 500) {

                 throw new IllegalStateException(

                     "Giving up. First manifest:\n" + first + 

                     "\nLast manifest:\n" + now

                 );

             }

         }

         assert different : "Not all manifests should look like first one:\n" + first;

         return "" + cnt;

     }

     @Compare public String readResourceAsStream() throws Exception {

         InputStream is = getClass().getResourceAsStream("Resources.txt");

         return readString(is);

     }

     @Compare public String readResourceViaConnection() throws Exception {

         InputStream is = getClass().getResource("Resources.txt").openConnection().getInputStream();

         return readString(is);

     }

     private String readString(InputStream is) throws IOException {

         StringBuilder sb = new StringBuilder();

         byte[] b = new byte[512];

         for (;;) { 

             int len = is.read(b);

             if (len == -1) {

                 return sb.toString();

             }

             for (int i = 0; i < len; i++) {

                 sb.append((char)b[i]);

             }

         }

     }

     @Compare public String readResourceAsStreamFromClassLoader() throws Exception {

         InputStream is = getClass().getClassLoader().getResourceAsStream("org/apidesign/bck2brwsr/tck/Resources.txt");

         return readString(is);

     }

     @Compare public String toURIFromURL() throws Exception {

         URL u = new URL("http://apidesign.org");

         return u.toURI().toString();

     }

     @Factory public static Object[] create() {

         return VMTest.create(ResourcesTest.class);

     }

 }