Detect stale-file-handle error in causal chain

Cover the case where the exception is wrapped up as a
cause, e.g., PackIndex#open(File).

Change-Id: I0df5b1e9c2ff886bdd84dee3658b6a50866699d1
Signed-off-by: Hongkai Liu <hongkai.liu@ericsson.com>

1 files changed, 40 insertions, 0 deletions

diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/util/FileUtilsTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/util/FileUtilsTest.java
index 73d8038b92..109d0e6ee3 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/util/FileUtilsTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/util/FileUtilsTest.java
@@ -50,10 +50,14 @@ import static org.junit.Assert.fail;
 
 import java.io.File;
 import java.io.IOException;
+import java.io.UnsupportedEncodingException;
 import java.nio.file.Files;
 import java.nio.file.StandardCopyOption;
+import java.rmi.RemoteException;
 import java.util.regex.Matcher;
 
+import javax.management.remote.JMXProviderException;
+
 import org.eclipse.jgit.junit.JGitTestUtil;
 import org.junit.After;
 import org.junit.Assume;
@@ -61,6 +65,17 @@ import org.junit.Before;
 import org.junit.Test;
 
 public class FileUtilsTest {
+	private static final String MSG = "Stale file handle";
+
+	private static final String SOME_ERROR_MSG = "some error message";
+
+	private static final IOException IO_EXCEPTION = new UnsupportedEncodingException(
+			MSG);
+
+	private static final IOException IO_EXCEPTION_WITH_CAUSE = new RemoteException(
+			SOME_ERROR_MSG,
+			new JMXProviderException(SOME_ERROR_MSG, IO_EXCEPTION));
+
 	private File trash;
 
 	@Before
@@ -541,4 +556,29 @@ public class FileUtilsTest {
 		return path.replaceAll("/|\\\\",
 				Matcher.quoteReplacement(File.separator));
 	}
+
+	@Test
+	public void testIsStaleFileHandleWithDirectCause() throws Exception {
+		assertTrue(FileUtils.isStaleFileHandle(IO_EXCEPTION));
+	}
+
+	@Test
+	public void testIsStaleFileHandleWithIndirectCause() throws Exception {
+		assertFalse(
+				FileUtils.isStaleFileHandle(IO_EXCEPTION_WITH_CAUSE));
+	}
+
+	@Test
+	public void testIsStaleFileHandleInCausalChainWithDirectCause()
+			throws Exception {
+		assertTrue(
+				FileUtils.isStaleFileHandleInCausalChain(IO_EXCEPTION));
+	}
+
+	@Test
+	public void testIsStaleFileHandleInCausalChainWithIndirectCause()
+			throws Exception {
+		assertTrue(FileUtils
+				.isStaleFileHandleInCausalChain(IO_EXCEPTION_WITH_CAUSE));
+	}
 }