/*
    * Copyright 2005-2008 The Kuali Foundation
    * 
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
    * 
   * 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.
   */
  package org.kuali.rice.kns.util;
  
  import java.util.HashSet;
  import java.util.Set;
  
  import org.junit.Test;
  import org.kuali.rice.kns.util.Guid;
  import org.kuali.test.KNSTestCase;
  
  /**
   * This class tests the GUID (Globally Unique Id) methods.
   */
  public class GuidTest extends KNSTestCase {
  
      private final static int count = 100000; // This passed at 1 million
  
      private static final org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(Guid.class);
  
      @Test public void testGuidGeneration() {
          Guid guid = new Guid();
          assertNotNull(guid);
          assertNotNull(guid.toString());
      }
  
  
      @Test public void testGuidUniqueness() {
          Set<String> seen = new HashSet();
  
          for (int i = 0; i < count; i++) {
              Guid guid = new Guid();
              String nextGuid = guid.toString();
              assertFalse("guids should probably be unique: " + i + "," + nextGuid, seen.contains(nextGuid));
              seen.add(nextGuid);
          }
      }
  
  
      @Test public void testGuidHexConversion() throws Exception {
          assertTrue("FF".equals(Guid.toHex((byte) 255)));
          assertEquals("83", Guid.toHex((byte) 0x83));
          assertEquals("83", Guid.toHex((byte) -125));
  
      }
  
  
  }