/**

  * 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.compact.tck;

 import java.io.ByteArrayOutputStream;

 import java.io.IOException;

 import java.io.InputStream;

 import java.util.Arrays;

 import java.util.LinkedHashMap;

 import java.util.Map;

 import java.util.Objects;

 import java.util.zip.ZipEntry;

 import java.util.zip.ZipInputStream;

 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 ZipCompatibilityTest {

     @Compare

     public String testDemoStaticCalculator() throws IOException {

         InputStream is = getClass().getResourceAsStream("demo.static.calculator-0.3-SNAPSHOT.jar");

         Archive zip = Archive.createZip(is);

         return zip.toString();

     }

     @Factory

     public static Object[] create() {

         return VMTest.create(ZipCompatibilityTest.class);

     }

     private static final class Archive {

         private final Map<String, byte[]> entries = new LinkedHashMap<>();

         public static Archive createZip(InputStream is) throws IOException {

             Archive a = new Archive();

             readZip(is, a);

             return a;

         }

         /**

          * Registers entry name and data

          */

         final void register(String entry, InputStream is) throws IOException {

             ByteArrayOutputStream os = new ByteArrayOutputStream();

             for (;;) {

                 int ch = is.read();

                 if (ch == -1) {

                     break;

                 }

                 os.write(ch);

             }

             os.close();

             entries.put(entry, os.toByteArray());

         }

         @Override

         public int hashCode() {

             return entries.hashCode();

         }

         @Override

         public boolean equals(Object obj) {

             if (obj == null) {

                 return false;

             }

             if (getClass() != obj.getClass()) {

                 return false;

             }

             final Archive other = (Archive) obj;

             if (!Objects.deepEquals(this.entries, other.entries)) {

                 return false;

             }

             return true;

         }

         @Override

         public String toString() {

             StringBuilder sb = new StringBuilder();

             for (Map.Entry<String, byte[]> en : entries.entrySet()) {

                 String string = en.getKey();

                 byte[] bs = en.getValue();

                 sb.append(string).append(" = ").append(Arrays.toString(bs)).append("\n");

             }

             return sb.toString();

         }

         public void assertEquals(Archive zip, String msg) {

             boolean ok = true;

             StringBuilder sb = new StringBuilder();

             sb.append(msg);

             for (Map.Entry<String, byte[]> en : entries.entrySet()) {

                 String string = en.getKey();

                 byte[] bs = en.getValue();

                 byte[] other = zip.entries.get(string);

                 sb.append("\n");

                 if (other == null) {

                     sb.append("EXTRA ").append(string).append(" = ").append(Arrays.toString(bs));

                     ok = false;

                     continue;

                 }

                 if (Arrays.equals(bs, other)) {

                     sb.append("OK    ").append(string);

                     continue;

                 } else {

                     sb.append("DIFF  ").append(string).append(" = ").append(Arrays.toString(bs)).append("\n");

                     sb.append("    TO").append(string).append(" = ").append(Arrays.toString(other)).append("\n");

                     ok = false;

                     continue;

                 }

             }

             for (Map.Entry<String, byte[]> entry : zip.entries.entrySet()) {

                 String string = entry.getKey();

                 if (entries.get(string) == null) {

                     sb.append("MISS  ").append(string).append(" = ").append(Arrays.toString(entry.getValue()));

                     ok = false;

                 }

             }

             if (!ok) {

                 assert false : sb.toString();

             }

         }

         public static void readZip(InputStream is, Archive data) throws IOException {

             ZipInputStream zip = new ZipInputStream(is);

             for (;;) {

                 ZipEntry en = zip.getNextEntry();

                 if (en == null) {

                     return;

                 }

                 data.register(en.getName(), zip);

             }

         }

     }

 }