LUCENE-4308: don't delete a test's files if the test fails

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1373801 13f79535-47bb-0310-9956-ffa450edef68

lucene/core/src/test/org/apache/lucene/util/junitcompat/TestLeaveFilesIfTestFails.java

@@ -0,0 +1,51 @@
+package org.apache.lucene.util.junitcompat;
+
+import java.io.File;
+
+import org.apache.lucene.store.Directory;
+import org.apache.lucene.util._TestUtil;
+import org.apache.lucene.util.junitcompat.TestFailIfDirectoryNotClosed.Nested1;
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.JUnitCore;
+import org.junit.runner.Result;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+public class TestLeaveFilesIfTestFails extends WithNestedTests {
+  public TestLeaveFilesIfTestFails() {
+    super(true);
+  }
+  
+  public static class Nested1 extends WithNestedTests.AbstractNestedTest {
+    static File file;
+    public void testDummy() {
+      file = _TestUtil.getTempDir("leftover");
+      file.mkdirs();
+      fail();
+    }
+  }
+
+  @Test
+  public void testLeaveFilesIfTestFails() {
+    Result r = JUnitCore.runClasses(Nested1.class);
+    Assert.assertEquals(1, r.getFailureCount());
+    Assert.assertTrue(Nested1.file.exists());
+    Nested1.file.delete();
+  }
+}

lucene/test-framework/src/java/org/apache/lucene/util/CloseableFile.java

@@ -24,13 +24,17 @@ import java.io.*;
  */
 final class CloseableFile implements Closeable {
   private final File file;
+  private final TestRuleMarkFailure failureMarker;
 
-  public CloseableFile(File file) {
+  public CloseableFile(File file, TestRuleMarkFailure failureMarker) {
     this.file = file;
+    this.failureMarker = failureMarker;
   }
 
   @Override
   public void close() throws IOException {
+    // only if there were no other test failures.
+    if (failureMarker.wasSuccessful()) {
       if (file.exists()) {
         try {
           _TestUtil.rmDir(file);
@@ -46,3 +50,4 @@ final class CloseableFile implements Closeable {
     }
     }
   }
+}

lucene/test-framework/src/java/org/apache/lucene/util/_TestUtil.java

@@ -94,7 +94,7 @@ public class _TestUtil {
     try {
       File f = createTempFile(desc, "tmp", LuceneTestCase.TEMP_DIR);
       f.delete();
-      LuceneTestCase.closeAfterSuite(new CloseableFile(f));
+      LuceneTestCase.closeAfterSuite(new CloseableFile(f, LuceneTestCase.suiteFailureMarker));
       return f;
     } catch (IOException e) {
       throw new RuntimeException(e);
@@ -136,7 +136,7 @@ public class _TestUtil {
     rmDir(destDir);
 
     destDir.mkdir();
-    LuceneTestCase.closeAfterSuite(new CloseableFile(destDir));
+    LuceneTestCase.closeAfterSuite(new CloseableFile(destDir, LuceneTestCase.suiteFailureMarker));
 
     while (entries.hasMoreElements()) {
       ZipEntry entry = entries.nextElement();