From bcc16311a158b18027ff8a02d5dbb49f7a5229e9 Mon Sep 17 00:00:00 2001
From: Yonik Seeley <yonik@apache.org>
Date: Wed, 9 Mar 2011 15:12:16 +0000
Subject: [PATCH] SOLR-2410: add test that normally hits phase3 cleaning w/ PQ

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1079827 13f79535-47bb-0310-9956-ffa450edef68
---
 .../org/apache/solr/search/TestFastLRUCache.java     | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/solr/src/test/org/apache/solr/search/TestFastLRUCache.java b/solr/src/test/org/apache/solr/search/TestFastLRUCache.java
index d313eb4d597..2d226fbab0f 100644
--- a/solr/src/test/org/apache/solr/search/TestFastLRUCache.java
+++ b/solr/src/test/org/apache/solr/search/TestFastLRUCache.java
@@ -254,6 +254,18 @@ public class TestFastLRUCache extends LuceneTestCase {
     cache.destroy();
   }
 
+  // enough randomness to exercise all of the different cache purging phases
+  public void testRandom() {
+    int sz = random.nextInt(100)+5;
+    int lowWaterMark = random.nextInt(sz-3)+1;
+    int keyrange = random.nextInt(sz*3)+1;
+    ConcurrentLRUCache<Integer, String> cache = new ConcurrentLRUCache<Integer, String>(sz, lowWaterMark);
+    for (int i=0; i<10000; i++) {
+      cache.put(random.nextInt(keyrange), "");
+      cache.get(random.nextInt(keyrange));
+    }
+  }
+
   void doPerfTest(int iter, int cacheSize, int maxKey) {
     long start = System.currentTimeMillis();