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   *  to you under the Apache License, Version 2.0 (the
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  package org.apache.cayenne.util;
  
  import org.apache.cayenne.access.types.ByteArrayTypeTest;
  import org.junit.Test;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNotNull;
  import static org.junit.Assert.fail;
  
  /**
   */
  public class IDUtilTest {
  
      @Test
      public void testPseudoUniqueByteSequence1() throws Exception {
          try {
              IDUtil.pseudoUniqueByteSequence(10);
              fail("must throw an exception on short sequences");
          } catch (IllegalArgumentException ex) {
              // expected
          }
      }
  
      @Test
      public void testPseudoUniqueByteSequence2() throws Exception {
          byte[] byte16 = IDUtil.pseudoUniqueByteSequence(16);
          assertNotNull(byte16);
          assertEquals(16, byte16.length);
  
          try {
              ByteArrayTypeTest.assertByteArraysEqual(
                  byte16,
                  IDUtil.pseudoUniqueByteSequence(16));
              fail("Same byte array..");
          } catch (Throwable th) {
  
          }
      }
  
      @Test
      public void testPseudoUniqueByteSequence3() throws Exception {
          byte[] byte17 = IDUtil.pseudoUniqueByteSequence(17);
          assertNotNull(byte17);
          assertEquals(17, byte17.length);
  
          byte[] byte123 = IDUtil.pseudoUniqueByteSequence(123);
          assertNotNull(byte123);
          assertEquals(123, byte123.length);
      }
  
  }
  