package org.webslinger.commons.vfs.tests;

 import java.io.EOFException;

 import java.io.InputStream;

 import java.io.OutputStream;

 import junit.framework.Assert;

 import org.apache.commons.vfs.FileContent;

 import org.apache.commons.vfs.FileObject;

 import org.apache.commons.vfs.RandomAccessContent;

 import org.apache.commons.vfs.util.RandomAccessMode;

 import org.webslinger.io.IOUtil;

 public class TestUtil extends Assert {

     public static void checkContent(String name, FileObject file, String oldContent, String newContent, boolean which) throws Exception {

         if (file.exists()) {

             String contentToCheck = which ? newContent : oldContent;

             assertEquals(name + " in content", contentToCheck, readString(file));

             if (false) {

             RandomAccessContent rac = file.getContent().getRandomAccessContent(RandomAccessMode.READ);

             StringBuilder sb = new StringBuilder();

             while (true) {

                 try {

                     sb.append(rac.readChar());

                 } catch (EOFException e) {

                     break;

                 }

             }

             assertEquals(name + " rac content", contentToCheck, sb.toString());

             }

         } else if (which) {

             fail(name + " file doesn't exist, when content was written");

         }

     }

     public static void writeString(FileObject file, String value) throws Exception {

         FileContent content = file.getContent();

         assertFalse(file.getName() + " is not open", content.isOpen());

         OutputStream out = content.getOutputStream();

         assertTrue(file.getName() + " is open", content.isOpen());

         IOUtil.writeString(out, value);

         assertFalse(file.getName() + " is not open", content.isOpen());

     }

     public static String readString(FileObject file) throws Exception {

         FileContent content = file.getContent();

         assertFalse(file.getName() + " is not open", content.isOpen());

         InputStream in = content.getInputStream();

         assertTrue(file.getName() + " is open", content.isOpen());

         String value = IOUtil.readString(in);

         assertFalse(file.getName() + " is not open", content.isOpen());

         return value;

     }

 }