IdGeneratorTest xref

    1   /*
    2    * Created on Mar 5, 2004
    3    *
    4    * To change the template for this generated file go to
    5    * Window - Preferences - Java - Code Generation - Code and Comments
    6    */
    7   package org.codehaus.activemq.util;
    8
    9   import junit.framework.TestCase;
    10
    11  import java.util.Hashtable;
    12
    13  /***
    14   * To change the template for this generated type comment go to
    15   * Window - Preferences - Java - Code Generation - Code and Comments
    16   */
    17  public class IdGeneratorTest extends TestCase {
    18
    19      public static void main(String[] args) {
    20          junit.textui.TestRunner.run(IdGeneratorTest.class);
    21      }
    22
    23      /*
    24       * @see TestCase#setUp()
    25       */
    26      protected void setUp() throws Exception {
    27          super.setUp();
    28      }
    29
    30      /*
    31       * @see TestCase#tearDown()
    32       */
    33      protected void tearDown() throws Exception {
    34          super.tearDown();
    35      }
    36
    37      /***
    38       * Constructor for IdGeneratorTest.
    39       *
    40       * @param arg0
    41       */
    42      public IdGeneratorTest(String arg0) {
    43          super(arg0);
    44      }
    45
    46      /***
    47       * This is not a good test!
    48       */
    49
    50      public void testGenerateId() {
    51          IdGenerator idGen = new IdGenerator();
    52          int count = 100000;
    53          Hashtable table = new Hashtable();
    54          String str = "";
    55          for (int i = 0; i < count; i++) {
    56              str = idGen.generateId();
    57              assertTrue(str != null);
    58              assertTrue(table.get(str) == null);
    59              table.put(str, str);
    60          }
    61      }
    62
    63      public void testGetSeedFromId() {
    64          IdGenerator idGen = new IdGenerator();
    65          String seed = idGen.getSeed();
    66          String id = idGen.generateId();
    67          String generatorId = IdGenerator.getSeedFromId(id);
    68          for (int i = 0; i < 1000; i++) {
    69              assertTrue(generatorId.equals(seed));
    70          }
    71      }
    72
    73      public void testGetCountFromId() {
    74          IdGenerator idGen = new IdGenerator();
    75          String seed = idGen.getSeed();
    76          for (int i = 0; i < 100; i++) {
    77              String id = idGen.generateId();
    78              long count = IdGenerator.getCountFromId(id);
    79              assertTrue(count == i);
    80          }
    81      }
    82
    83      public void testCompare() {
    84          IdGenerator idGen = new IdGenerator();
    85          String seed = idGen.getSeed();
    86          String lastId = null;
    87          for (int i = 0; i < 100; i++) {
    88              String id = idGen.generateId();
    89              if (lastId != null) {
    90                  assertTrue(IdGenerator.compare(lastId, id) == -1);
    91              }
    92              lastId = id;
    93          }
    94      }
    95
    96  }