package com.atlassian.plugin.osgi.factory.transform;
   
   import com.atlassian.plugin.osgi.factory.transform.JarUtils.Extractor;
   import com.atlassian.plugin.test.PluginJarBuilder;
   
   import com.google.common.collect.Iterables;
   
   import java.io.File;
   import java.util.concurrent.atomic.AtomicBoolean;
  import java.util.jar.JarEntry;
  import java.util.jar.JarFile;
  import java.util.jar.Manifest;
  
  import junit.framework.TestCase;
  
  public class TestJarUtils extends TestCase
  {
      public void testEntries() throws Exception
      {
          final File plugin = new PluginJarBuilder().addResource("foo", "bar").build();
          final Iterable<JarEntry> entries = JarUtils.getEntries(plugin);
          assertFalse("must contain some entry", Iterables.isEmpty(entries));
          final JarEntry entry = Iterables.get(entries, 0);
          assertEquals("foo", entry.getName());
      }
  
      public void testNoEntries() throws Exception
      {
          // cannot create a completely empty jar so we just use the manifest
          final File plugin = new PluginJarBuilder().build();
          final Iterable<JarEntry> entries = JarUtils.getEntries(plugin);
          final JarEntry manifest = Iterables.getOnlyElement(entries);
          assertNotNull(manifest);
          assertEquals("META-INF/MANIFEST.MF", manifest.getName());
      }
  
      public void testEntry() throws Exception
      {
          final File plugin = new PluginJarBuilder().addResource("foo", "bar").build();
          final JarEntry entry = JarUtils.getEntry(plugin, "foo");
          assertNotNull(entry);
          assertEquals("foo", entry.getName());
      }
  
      public void testEntryNotFound() throws Exception
      {
          final File plugin = new PluginJarBuilder().addResource("foo", "bar").build();
          final JarEntry entry = JarUtils.getEntry(plugin, "bar");
          assertNull(entry);
      }
  
      public void testManifest() throws Exception
      {
          final File plugin = new PluginJarBuilder().build();
          final Manifest manifest = JarUtils.getManifest(plugin);
          assertNotNull(manifest);
      }
  
      public void testManifestCreatedIfNotPresent() throws Exception
      {
          final File plugin = new PluginJarBuilder().addResource("foo", "bar").buildWithNoManifest();
          final Manifest manifest = JarUtils.getManifest(plugin);
          assertNotNull(manifest);
      }
  
      public void testExtractor() throws Exception
      {
          final File plugin = new PluginJarBuilder().addResource("dooby", "whacker").build();
          final Object expected = new Object();
          final AtomicBoolean called = new AtomicBoolean(false);
          final Object result = JarUtils.withJar(plugin, new Extractor<Object>()
          {
              public Object get(final JarFile jar)
              {
                  final JarEntry entry = jar.getJarEntry("dooby");
                  assertNotNull(entry);
                  final JarEntry nonEntry = jar.getJarEntry("blot");
                  assertNull(nonEntry);
                  called.set(true);
                  return expected;
              }
          });
          assertTrue(called.get());
          assertSame(expected, result);
      }
  }