package com.atlassian.plugin.osgi.container;
   
   import junit.framework.TestCase;
   import com.atlassian.plugin.test.PluginTestUtils;
   import com.atlassian.plugin.osgi.container.impl.DefaultOsgiPersistentCache;
   
   import java.io.File;
   import java.io.IOException;
   
  import org.apache.commons.io.FileUtils;
  
  public class TestDefaultOsgiPersistentCache extends TestCase
  {
      private File tmpDir;
  
      @Override
      protected void setUp() throws Exception
      {
          super.setUp();
          tmpDir = PluginTestUtils.createTempDirectory(TestDefaultOsgiPersistentCache.class);
      }
  
      public void testRecordLastVersion() throws IOException
      {
          DefaultOsgiPersistentCache cache = new DefaultOsgiPersistentCache(tmpDir);
          File versionFile = new File(new File(tmpDir, "transformed-plugins"), "cache.key");
          cache.validate("1.0");
          assertTrue(versionFile.exists());
          String txt = FileUtils.readFileToString(versionFile);
  
          //48563 == "1.0".hashCode(). We are relying on the hashCode being stable between runs and want to test
          //this here. The String.hashCode Javadoc documents the algorithm and I guess it will not change but I
          //want to make sure.
          assertEquals(String.valueOf(48563), txt);
      }
  
      public void testCleanOnUpgrade() throws IOException
      {
          DefaultOsgiPersistentCache cache = new DefaultOsgiPersistentCache(tmpDir);
          File tmp = File.createTempFile("foo", ".txt", new File(tmpDir, "transformed-plugins"));
          cache.validate("1.0");
          assertTrue(tmp.exists());
          cache.validate("2.0");
          assertFalse(tmp.exists());
      }
  
      public void testNullVersion() throws IOException
      {
          DefaultOsgiPersistentCache cache = new DefaultOsgiPersistentCache(tmpDir);
          cache.validate(null);
          File tmp = File.createTempFile("foo", ".txt", new File(tmpDir, "transformed-plugins"));
          assertTrue(tmp.exists());
          cache.validate(null);
          assertTrue(tmp.exists());
      }
  
      @Override
      protected void tearDown() throws Exception
      {
          super.tearDown();
          FileUtils.cleanDirectory(tmpDir);
      }
  }