patch, 4 partsMake the cleanup less verbose when it fails to delete temporary stuff.

diff --git a/org.spearce.jgit.test/tst/org/spearce/jgit/lib/RepositoryTestCase.java b/org.spearce.jgit.test/tst/org/spearce/jgit/lib/RepositoryTestCase.java
index 9d7d133..9c272f6 100644
--- a/org.spearce.jgit.test/tst/org/spearce/jgit/lib/RepositoryTestCase.java
+++ b/org.spearce.jgit.test/tst/org/spearce/jgit/lib/RepositoryTestCase.java
@@ -66,22 +66,43 @@
 		jcommitter = new PersonIdent("J. Committer", "jcommitter@example.com");
 	}
 
-	protected static void recursiveDelete(final File dir) {
+	protected static boolean recursiveDelete(final File dir) {
+		return recursiveDelete(dir, false, null);
+	}
+
+	protected static boolean recursiveDelete(final File dir, boolean silent,
+			final String name) {
+		if (!dir.exists())
+			return silent;
 		final File[] ls = dir.listFiles();
 		if (ls != null) {
 			for (int k = 0; k < ls.length; k++) {
 				final File e = ls[k];
 				if (e.isDirectory()) {
-					recursiveDelete(e);
+					silent = recursiveDelete(e, silent, name);
 				} else {
-					e.delete();
+					if (!e.delete()) {
+						if (!silent) {
+							String msg = "Warning: Failed to delete " + e;
+							if (name != null)
+								msg += " in " + name;
+							System.out.println(msg);
+						}
+						silent = true;
+					}
 				}
 			}
 		}
-		dir.delete();
-		if (dir.exists()) {
-			System.out.println("Warning: Failed to delete " + dir);
+		if (!dir.delete()) {
+			if (!silent) {
+				String msg = "Warning: Failed to delete " + dir;
+				if (name != null)
+					msg += " in " + name;
+				System.out.println(msg);
+			}
+			silent = true;
 		}
+		return silent;
 	}
 
 	protected static void copyFile(final File src, final File dst)
@@ -121,19 +142,25 @@ protected static void checkFile(File f, final String checkData)
 
 	protected Repository db;
 
+	private static int testcount;
+	private static Thread shutdownhook;
+
 	public void setUp() throws Exception {
 		super.setUp();
-		recursiveDelete(trashParent);
-		trash = new File(trashParent,"trash"+System.currentTimeMillis());
+		System.gc();
+		trash = new File(trashParent,"trash"+System.currentTimeMillis()+"."+(testcount++));
+		final String name = getClass().getName() + "." + getName();
+		recursiveDelete(trashParent, true, name);
 		trash_git = new File(trash, ".git");
-
-		Runtime.getRuntime().addShutdownHook(new Thread() {
-			@Override
-			public void run() {
-				recursiveDelete(trashParent);
-			}
-		});
-
+		if (shutdownhook == null) {
+			shutdownhook = new Thread() {
+				@Override
+				public void run() {
+					recursiveDelete(trashParent, false, name);
+				}
+			};
+			Runtime.getRuntime().addShutdownHook(shutdownhook);
+		}
 		db = new Repository(trash_git);
 		db.create();
 

diff --git a/org.spearce.jgit.test/tst/org/spearce/jgit/lib/RepositoryTestCase.java b/org.spearce.jgit.test/tst/org/spearce/jgit/lib/RepositoryTestCase.java
index 9c272f6..ef4fd1b 100644
--- a/org.spearce.jgit.test/tst/org/spearce/jgit/lib/RepositoryTestCase.java
+++ b/org.spearce.jgit.test/tst/org/spearce/jgit/lib/RepositoryTestCase.java
@@ -66,8 +66,8 @@
 		jcommitter = new PersonIdent("J. Committer", "jcommitter@example.com");
 	}
 
-	protected static boolean recursiveDelete(final File dir) {
-		return recursiveDelete(dir, false, null);
+	protected boolean recursiveDelete(final File dir) {
+		return recursiveDelete(dir, false, getClass().getName() + "." + getName());
 	}
 
 	protected static boolean recursiveDelete(final File dir, boolean silent,
@@ -161,6 +161,12 @@ public void run() {
 			};
 			Runtime.getRuntime().addShutdownHook(shutdownhook);
 		}
+		Runtime.getRuntime().addShutdownHook(new Thread() {
+			@Override
+			public void run() {
+				recursiveDelete(trash);
+			}
+		});
 		db = new Repository(trash_git);
 		db.create();
 
@@ -197,12 +203,18 @@ protected void tearDown() throws Exception {
 	 * @throws IOException
 	 */
 	protected Repository createNewEmptyRepo() throws IOException {
-		File newTestRepo = new File(trashParent, "new"+System.currentTimeMillis()+"/.git");
+		final File newTestRepo = new File(trashParent, "new"+System.currentTimeMillis()+"/.git");
 		assertFalse(newTestRepo.exists());
 		File unusedDir = new File(trashParent, "tmp"+System.currentTimeMillis());
 		assertTrue(unusedDir.mkdirs());
 		final Repository newRepo = new Repository(newTestRepo);
 		newRepo.create();
+		Runtime.getRuntime().addShutdownHook(new Thread() {
+			@Override
+			public void run() {
+				recursiveDelete(newTestRepo);
+			}
+		});
 		return newRepo;
 	}
 

diff --git a/org.spearce.jgit.test/tst/org/spearce/jgit/lib/PackWriterTest.java b/org.spearce.jgit.test/tst/org/spearce/jgit/lib/PackWriterTest.java
index e5bce4d..3c02955 100644
--- a/org.spearce.jgit.test/tst/org/spearce/jgit/lib/PackWriterTest.java
+++ b/org.spearce.jgit.test/tst/org/spearce/jgit/lib/PackWriterTest.java
@@ -309,6 +309,7 @@ public void testWritePack4ThinPack() throws IOException {
 	public void testWritePack2SizeDeltasVsNoDeltas() throws Exception {
 		testWritePack2();
 		final int sizePack2NoDeltas = cos.getCount();
+		tearDown();
 		setUp();
 		testWritePack2DeltasReuseRefs();
 		final int sizePack2DeltasRefs = cos.getCount();
@@ -327,6 +328,7 @@ public void testWritePack2SizeDeltasVsNoDeltas() throws Exception {
 	public void testWritePack2SizeOffsetsVsRefs() throws Exception {
 		testWritePack2DeltasReuseRefs();
 		final int sizePack2DeltasRefs = cos.getCount();
+		tearDown();
 		setUp();
 		testWritePack2DeltasReuseOffsets();
 		final int sizePack2DeltasOffsets = cos.getCount();
@@ -344,6 +346,7 @@ public void testWritePack2SizeOffsetsVsRefs() throws Exception {
 	public void testWritePack4SizeThinVsNoThin() throws Exception {
 		testWritePack4();
 		final int sizePack4 = cos.getCount();
+		tearDown();
 		setUp();
 		testWritePack4ThinPack();
 		final int sizePack4Thin = cos.getCount();

diff --git a/org.spearce.jgit.test/tst/org/spearce/jgit/lib/RepositoryTestCase.java b/org.spearce.jgit.test/tst/org/spearce/jgit/lib/RepositoryTestCase.java
index ef4fd1b..cab65a0 100644
--- a/org.spearce.jgit.test/tst/org/spearce/jgit/lib/RepositoryTestCase.java
+++ b/org.spearce.jgit.test/tst/org/spearce/jgit/lib/RepositoryTestCase.java
@@ -45,6 +45,7 @@
 import java.io.InputStreamReader;
 import java.io.OutputStreamWriter;
 import java.io.Reader;
+import java.util.ArrayList;
 
 import junit.framework.TestCase;
 import org.spearce.jgit.util.JGitTestUtil;
@@ -145,6 +146,8 @@ protected static void checkFile(File f, final String checkData)
 	private static int testcount;
 	private static Thread shutdownhook;
 
+	private ArrayList<Repository> repositoriesToClose = new ArrayList<Repository>();
+
 	public void setUp() throws Exception {
 		super.setUp();
 		System.gc();
@@ -192,6 +195,20 @@ copyFile(JGitTestUtil.getTestResourceFile(packs[k] + ".idx"), new File(packDir,
 
 	protected void tearDown() throws Exception {
 		db.close();
+		for (Repository r : repositoriesToClose) {
+			r.close();
+		}
+		// Since memory mapping is controlled by the GC we need to
+		// tell it this is a good time to clean up and unlock
+		// mmemory mapped files.
+		System.gc();
+
+		recursiveDelete(trash, false, getName());
+		for (Repository r : repositoriesToClose) {
+			recursiveDelete(r.getWorkDir(), false, getName());
+		}
+		repositoriesToClose.clear();
+
 		super.tearDown();
 	}
 
@@ -209,12 +226,14 @@ protected Repository createNewEmptyRepo() throws IOException {
 		assertTrue(unusedDir.mkdirs());
 		final Repository newRepo = new Repository(newTestRepo);
 		newRepo.create();
+		final String name = getClass().getName() + "." + getName();
 		Runtime.getRuntime().addShutdownHook(new Thread() {
 			@Override
 			public void run() {
-				recursiveDelete(newTestRepo);
+				recursiveDelete(newTestRepo, false, name);
 			}
 		});
+		repositoriesToClose.add(newRepo);
 		return newRepo;
 	}