pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / contrib / facet / src / test / org / apache / lucene / util / collections / TestLRUHashMap.java

diff --git a/lucene-java-3.5.0/lucene/contrib/facet/src/test/org/apache/lucene/util/collections/TestLRUHashMap.java b/lucene-java-3.5.0/lucene/contrib/facet/src/test/org/apache/lucene/util/collections/TestLRUHashMap.java
new file mode 100644 (file)
index 0000000..48221b3
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+++ b/lucene-java-3.5.0/lucene/contrib/facet/src/test/org/apache/lucene/util/collections/TestLRUHashMap.java
@@ -0,0 +1,61 @@
+package org.apache.lucene.util.collections;
+
+import org.junit.Test;
+
+import org.apache.lucene.util.LuceneTestCase;
+import org.apache.lucene.util.collections.LRUHashMap;
+
+/**
+ * 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 TestLRUHashMap extends LuceneTestCase {
+  // testLRU() tests that the specified size limit is indeed honored, and
+  // the remaining objects in the map are indeed those that have been most
+  // recently used
+  @Test
+  public void testLRU() throws Exception {
+    LRUHashMap<String, String> lru = new LRUHashMap<String, String>(3);
+    assertEquals(0, lru.size());
+    lru.put("one", "Hello world");
+    assertEquals(1, lru.size());
+    lru.put("two", "Hi man");
+    assertEquals(2, lru.size());
+    lru.put("three", "Bonjour");
+    assertEquals(3, lru.size());
+    lru.put("four", "Shalom");
+    assertEquals(3, lru.size());
+    assertNotNull(lru.get("three"));
+    assertNotNull(lru.get("two"));
+    assertNotNull(lru.get("four"));
+    assertNull(lru.get("one"));
+    lru.put("five", "Yo!");
+    assertEquals(3, lru.size());
+    assertNull(lru.get("three")); // three was last used, so it got removed
+    assertNotNull(lru.get("five"));
+    lru.get("four");
+    lru.put("six", "hi");
+    lru.put("seven", "hey dude");
+    assertEquals(3, lru.size());
+    assertNull(lru.get("one"));
+    assertNull(lru.get("two"));
+    assertNull(lru.get("three"));
+    assertNotNull(lru.get("four"));
+    assertNull(lru.get("five"));
+    assertNotNull(lru.get("six"));
+    assertNotNull(lru.get("seven"));
+  }
+}