[jboss-cvs] JBoss Messaging SVN: r4207 - trunk/tests/src/org/jboss/messaging/tests/unit/core/util.

[jboss-cvs-commits at lists.jboss.org]

Author: jmesnil
Date: 2008-05-15 10:52:15 -0400 (Thu, 15 May 2008)
New Revision: 4207

Added:
   trunk/tests/src/org/jboss/messaging/tests/unit/core/util/UUIDTest.java
Log:
added UUIDTest

Added: trunk/tests/src/org/jboss/messaging/tests/unit/core/util/UUIDTest.java
===================================================================
--- trunk/tests/src/org/jboss/messaging/tests/unit/core/util/UUIDTest.java	                        (rev 0)
+++ trunk/tests/src/org/jboss/messaging/tests/unit/core/util/UUIDTest.java	2008-05-15 14:52:15 UTC (rev 4207)
@@ -0,0 +1,67 @@
+/*
+ * JBoss, Home of Professional Open Source
+ *
+ * Distributable under LGPL license.
+ * See terms of license at gnu.org.
+ */
+package org.jboss.messaging.tests.unit.core.util;
+
+import java.net.InetAddress;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+import junit.framework.TestCase;
+
+import org.jboss.messaging.util.UUIDGenerator;
+
+/**
+ * @author <a href="mailto:jmesnil at redhat.com">Jeff Mesnil</a>
+ *
+ * @version <tt>$Revision$</tt>
+ *
+ */
+public class UUIDTest extends TestCase
+{
+   // Constants -----------------------------------------------------
+
+   private static final int MANY_TIMES = 100000;
+   
+   // Attributes ----------------------------------------------------
+
+   // Static --------------------------------------------------------
+
+   // Constructors --------------------------------------------------
+
+   // Public --------------------------------------------------------
+
+   public void testManyUUIDs() throws Exception
+   {
+      List<String> uuids = new ArrayList<String>(MANY_TIMES);
+      
+      UUIDGenerator gen = UUIDGenerator.getInstance();
+      InetAddress addr = InetAddress.getLocalHost();
+      
+      for (int i = 0; i < MANY_TIMES; i++)
+      {
+         uuids.add(gen.generateTimeBasedUUID(addr).toString());
+      }
+      
+      // we sort the UUIDs...
+      Collections.sort(uuids);
+      // ...and put them in a set to check duplicates
+      Set<String> uuidsSet = new HashSet<String>(uuids);
+      
+      assertEquals(MANY_TIMES, uuidsSet.size());
+   }
+   
+   // Package protected ---------------------------------------------
+
+   // Protected -----------------------------------------------------
+
+   // Private -------------------------------------------------------
+
+   // Inner classes -------------------------------------------------
+}