From 426a5736d9e30254b4905698851092baaf577187 Mon Sep 17 00:00:00 2001
From: Michael McCandless <mikemccand@apache.org>
Date: Fri, 5 Sep 2014 13:13:44 +0000
Subject: [PATCH] test: list index files on failure

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1622693 13f79535-47bb-0310-9956-ffa450edef68
---
 .../org/apache/lucene/index/TestIndexWriter.java   | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/lucene/core/src/test/org/apache/lucene/index/TestIndexWriter.java b/lucene/core/src/test/org/apache/lucene/index/TestIndexWriter.java
index 3316372e55a..19c10b52b0c 100644
--- a/lucene/core/src/test/org/apache/lucene/index/TestIndexWriter.java
+++ b/lucene/core/src/test/org/apache/lucene/index/TestIndexWriter.java
@@ -1166,6 +1166,7 @@ public class TestIndexWriter extends LuceneTestCase {
         } catch (Throwable t) {
           log.println("thread " + id + " FAILED; unexpected exception");
           t.printStackTrace(log);
+          listIndexFiles(log, dir);
           failed = true;
           break;
         }
@@ -1194,6 +1195,7 @@ public class TestIndexWriter extends LuceneTestCase {
           failed = true;
           log.println("thread " + id + ": CheckIndex FAILED: unexpected exception");
           e.printStackTrace(log);
+          listIndexFiles(log, dir);
         }
         try {
           IndexReader r = DirectoryReader.open(dir);
@@ -1203,6 +1205,7 @@ public class TestIndexWriter extends LuceneTestCase {
           failed = true;
           log.println("thread " + id + ": DirectoryReader.open FAILED: unexpected exception");
           e.printStackTrace(log);
+          listIndexFiles(log, dir);
         }
       }
       try {
@@ -1218,6 +1221,16 @@ public class TestIndexWriter extends LuceneTestCase {
         throw new RuntimeException("thread " + id, e);
       }
     }
+
+    private void listIndexFiles(PrintStream log, Directory dir) {
+      try {
+        log.println("index files: " + Arrays.toString(dir.listAll()));
+      } catch (IOException ioe) {
+        // Suppress
+        log.println("failed to index files:");
+        ioe.printStackTrace(log);
+      }
+    }
   }
 
   public void testThreadInterruptDeadlock() throws Exception {
@@ -1730,7 +1743,6 @@ public class TestIndexWriter extends LuceneTestCase {
     Arrays.fill(chars, 'x');
     Document doc = new Document();
     final String bigTerm = new String(chars);
-    final BytesRef bigTermBytesRef = new BytesRef(bigTerm);
 
     // This contents produces a too-long term:
     String contents = "abc xyz x" + bigTerm + " another term";