diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/dircache/DirCacheEntryTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/dircache/DirCacheEntryTest.java
index dc7181aec..05fa00790 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/dircache/DirCacheEntryTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/dircache/DirCacheEntryTest.java
@@ -69,6 +69,7 @@ public class DirCacheEntryTest {
 		assertFalse(isValidPath("a\u0000b"));
 	}
 
+	@SuppressWarnings("unused")
 	private static boolean isValidPath(String path) {
 		try {
 			new DirCacheEntry(path);
@@ -78,6 +79,7 @@ public class DirCacheEntryTest {
 		}
 	}
 
+	@SuppressWarnings("unused")
 	@Test
 	public void testCreate_ByStringPath() {
 		assertEquals("a", new DirCacheEntry("a").getPathString());
@@ -91,6 +93,7 @@ public class DirCacheEntryTest {
 		}
 	}
 
+	@SuppressWarnings("unused")
 	@Test
 	public void testCreate_ByStringPathAndStage() {
 		DirCacheEntry e;
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/FileRepositoryBuilderTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/FileRepositoryBuilderTest.java
index 280d6040c..2d72d2373 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/FileRepositoryBuilderTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/FileRepositoryBuilderTest.java
@@ -72,6 +72,7 @@ public class FileRepositoryBuilderTest extends LocalDiskRepositoryTestCase {
 				.findGitDir(d).getGitDir());
 	}
 
+	@SuppressWarnings("unused")
 	@Test
 	public void emptyRepositoryFormatVersion() throws Exception {
 		Repository r = createWorkRepository();
@@ -83,6 +84,7 @@ public class FileRepositoryBuilderTest extends LocalDiskRepositoryTestCase {
 		new FileRepository(r.getDirectory());
 	}
 
+	@SuppressWarnings("unused")
 	@Test
 	public void invalidRepositoryFormatVersion() throws Exception {
 		Repository r = createWorkRepository();
@@ -99,6 +101,7 @@ public class FileRepositoryBuilderTest extends LocalDiskRepositoryTestCase {
 		}
 	}
 
+	@SuppressWarnings("unused")
 	@Test
 	public void unknownRepositoryFormatVersion() throws Exception {
 		Repository r = createWorkRepository();
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/T0003_BasicTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/T0003_BasicTest.java
index 5670a9634..a92ff8d04 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/T0003_BasicTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/T0003_BasicTest.java
@@ -364,6 +364,7 @@ public class T0003_BasicTest extends SampleDataRepositoryTestCase {
 		assertNotSame(db.getConfig(), db2.getConfig());
 	}
 
+	@SuppressWarnings("unused")
 	@Test
 	public void test008_FailOnWrongVersion() throws IOException {
 		final File cfg = new File(db.getDirectory(), Constants.CONFIG);
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/lib/T0001_PersonIdentTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/lib/T0001_PersonIdentTest.java
index 315c49560..1515a07ac 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/lib/T0001_PersonIdentTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/lib/T0001_PersonIdentTest.java
@@ -75,11 +75,13 @@ public class T0001_PersonIdentTest {
 				p.toExternalString());
 	}
 
+	@SuppressWarnings("unused")
 	@Test(expected = IllegalArgumentException.class)
 	public void nullForNameShouldThrowIllegalArgumentException() {
 		new PersonIdent(null, "author@example.com");
 	}
 
+	@SuppressWarnings("unused")
 	@Test(expected = IllegalArgumentException.class)
 	public void nullForEmailShouldThrowIllegalArgumentException() {
 		new PersonIdent("A U Thor", null);
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/SideBandOutputStreamTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/SideBandOutputStreamTest.java
index e9ae1909e..3661677cd 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/SideBandOutputStreamTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/SideBandOutputStreamTest.java
@@ -195,6 +195,7 @@ public class SideBandOutputStreamTest {
 		assertEquals(1, flushCnt[0]);
 	}
 
+	@SuppressWarnings("unused")
 	@Test
 	public void testConstructor_RejectsBadChannel() {
 		try {
@@ -220,6 +221,7 @@ public class SideBandOutputStreamTest {
 		}
 	}
 
+	@SuppressWarnings("unused")
 	@Test
 	public void testConstructor_RejectsBadBufferSize() {
 		try {
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/URIishTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/URIishTest.java
index 76eb18afd..0fda72cf9 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/URIishTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/URIishTest.java
@@ -64,6 +64,7 @@ public class URIishTest {
 
 	private static final String GIT_SCHEME = "git://";
 
+	@SuppressWarnings("unused")
 	@Test
 	public void shouldRaiseErrorOnEmptyURI() throws Exception {
 		try {
@@ -74,6 +75,7 @@ public class URIishTest {
 		}
 	}
 
+	@SuppressWarnings("unused")
 	@Test
 	public void shouldRaiseErrorOnNullURI() throws Exception {
 		try {