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   *   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
   *
   *    https://www.apache.org/licenses/LICENSE-2.0
   *
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   *  software distributed under the License is distributed on an
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   ****************************************************************/
  
  package org.apache.cayenne.access.types;
  
  import org.junit.Test;
  
  import static org.junit.Assert.fail;
  
  public class ByteArrayTypeTest {
  
      @Test
      public void testTrimBytes1() throws Exception {
          byte[] b1 = new byte[] {
                  1, 2, 3
          };
          byte[] b2 = ByteArrayType.trimBytes(b1);
          assertByteArraysEqual(b1, b2);
      }
  
      @Test
      public void testTrimBytes2() throws Exception {
          byte[] ref = new byte[] {
                  1, 2, 3
          };
          byte[] b1 = new byte[] {
                  1, 2, 3, 0, 0
          };
          byte[] b2 = ByteArrayType.trimBytes(b1);
          assertByteArraysEqual(ref, b2);
      }
  
      @Test
      public void testTrimBytes3() throws Exception {
          byte[] b1 = new byte[] {
                  0, 1, 2, 3
          };
          byte[] b2 = ByteArrayType.trimBytes(b1);
          assertByteArraysEqual(b1, b2);
      }
  
      @Test
      public void testTrimBytes4() throws Exception {
          byte[] b1 = new byte[] {};
          byte[] b2 = ByteArrayType.trimBytes(b1);
          assertByteArraysEqual(b1, b2);
      }
  
      public static void assertByteArraysEqual(byte[] b1, byte[] b2) throws Exception {
          if (b1 == b2) {
              return;
          }
  
          if (b1 == null && b2 == null) {
              return;
          }
  
          if (b1 == null) {
              fail("byte arrays differ (first one is null)");
          }
  
          if (b2 == null) {
              fail("byte arrays differ (second one is null)");
          }
  
          if (b1.length != b2.length) {
              fail("byte arrays differ (length differs: ["
                      + b1.length
                      + ","
                      + b2.length
                      + "])");
          }
  
          for (int i = 0; i < b1.length; i++) {
              if (b1[i] != b2[i]) {
                  fail("byte arrays differ (at position " + i + ")");
              }
          }
      }
  }
  