From 230696f7963c681d84c650de5d0e3c48fa2ff9db Mon Sep 17 00:00:00 2001
From: Uwe Schindler <uschindler@apache.org>
Date: Sat, 8 Sep 2012 12:16:47 +0000
Subject: [PATCH] LUCENE-4364: Include a test to make sure, the clones/slices
 can be closed without affecting the original or other opened ones! NOTE: The
 test failure on windows was depending on GC if it unmaps buffer before the
 tearDown runs.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1382291 13f79535-47bb-0310-9956-ffa450edef68
---
 .../apache/lucene/store/TestMultiMMap.java    | 53 +++++++++++++++++--
 1 file changed, 50 insertions(+), 3 deletions(-)

diff --git a/lucene/core/src/test/org/apache/lucene/store/TestMultiMMap.java b/lucene/core/src/test/org/apache/lucene/store/TestMultiMMap.java
index 5db2fc6d914..2d9240e7867 100644
--- a/lucene/core/src/test/org/apache/lucene/store/TestMultiMMap.java
+++ b/lucene/core/src/test/org/apache/lucene/store/TestMultiMMap.java
@@ -71,7 +71,7 @@ public class TestMultiMMap extends LuceneTestCase {
     }
     try {
       three.readVInt();
-      fail("Must throw AlreadyClosedExveption");
+      fail("Must throw AlreadyClosedException");
     } catch (AlreadyClosedException ignore) {
       // pass
     }
@@ -80,6 +80,27 @@ public class TestMultiMMap extends LuceneTestCase {
     mmapDir.close();
   }
   
+  public void testCloneClose() throws Exception {
+    MMapDirectory mmapDir = new MMapDirectory(_TestUtil.getTempDir("testCloneClose"));
+    IndexOutput io = mmapDir.createOutput("bytes", newIOContext(random()));
+    io.writeVInt(5);
+    io.close();
+    IndexInput one = mmapDir.openInput("bytes", IOContext.DEFAULT);
+    IndexInput two = one.clone();
+    IndexInput three = two.clone(); // clone of clone
+    two.close();
+    assertEquals(5, one.readVInt());
+    try {
+      two.readVInt();
+      fail("Must throw AlreadyClosedException");
+    } catch (AlreadyClosedException ignore) {
+      // pass
+    }
+    assertEquals(5, three.readVInt());
+    one.close();
+    mmapDir.close();
+  }
+  
   public void testCloneSliceSafety() throws Exception {
     MMapDirectory mmapDir = new MMapDirectory(_TestUtil.getTempDir("testCloneSliceSafety"));
     IndexOutput io = mmapDir.createOutput("bytes", newIOContext(random()));
@@ -106,13 +127,13 @@ public class TestMultiMMap extends LuceneTestCase {
     }
     try {
       three.readInt();
-      fail("Must throw AlreadyClosedExveption");
+      fail("Must throw AlreadyClosedException");
     } catch (AlreadyClosedException ignore) {
       // pass
     }
     try {
       four.readInt();
-      fail("Must throw AlreadyClosedExveption");
+      fail("Must throw AlreadyClosedException");
     } catch (AlreadyClosedException ignore) {
       // pass
     }
@@ -123,6 +144,32 @@ public class TestMultiMMap extends LuceneTestCase {
     mmapDir.close();
   }
 
+  public void testCloneSliceClose() throws Exception {
+    MMapDirectory mmapDir = new MMapDirectory(_TestUtil.getTempDir("testCloneSliceClose"));
+    IndexOutput io = mmapDir.createOutput("bytes", newIOContext(random()));
+    io.writeInt(1);
+    io.writeInt(2);
+    io.close();
+    IndexInputSlicer slicer = mmapDir.createSlicer("bytes", newIOContext(random()));
+    IndexInput one = slicer.openSlice("first int", 0, 4);
+    IndexInput two = slicer.openSlice("second int", 4, 4);
+    one.close();
+    try {
+      one.readInt();
+      fail("Must throw AlreadyClosedException");
+    } catch (AlreadyClosedException ignore) {
+      // pass
+    }
+    assertEquals(2, two.readInt());
+    // reopen a new slice "one":
+    one = slicer.openSlice("first int", 0, 4);
+    assertEquals(1, one.readInt());
+    one.close();
+    two.close();
+    slicer.close();
+    mmapDir.close();
+  }
+
   public void testSeekZero() throws Exception {
     for (int i = 0; i < 31; i++) {
       MMapDirectory mmapDir = new MMapDirectory(_TestUtil.getTempDir("testSeekZero"), null, 1<<i);