@Before
 public void setUp() {
   arrays = new LongArrays();
   description = new TestDescription("testing");
   failures = spy(new Failures());
   Arrays parent = Arrays.instance();
   parent.failures = failures;
 }
/**
 * Reusable assertions for arrays of {@code byte}s.
 *
 * @author Alex Ruiz
 * @author Mikhail Mazursky
 * @author Nicolas Fran├žois
 */
public class ByteArrays {

  private static final ByteArrays INSTANCE = new ByteArrays();

  /**
   * Returns the singleton instance of this class.
   *
   * @return the singleton instance of this class.
   */
  public static ByteArrays instance() {
    return INSTANCE;
  }

  private Arrays arrays = Arrays.instance();

  @VisibleForTesting Failures failures = Failures.instance();

  @VisibleForTesting
  ByteArrays() {
    this(StandardComparisonStrategy.instance());
  }

  public ByteArrays(ComparisonStrategy comparisonStrategy) {
    this.arrays = new Arrays(comparisonStrategy);
  }

  @VisibleForTesting
  public Comparator<?> getComparator() {
    return arrays.getComparator();
  }

  /**
   * Asserts that the given array is {@code null} or empty.
   *
   * @param info contains information about the assertion.
   * @param actual the given array.
   * @throws AssertionError if the given array is not {@code null} *and* contains one or more
   *     elements.
   */
  public void assertNullOrEmpty(AssertionInfo info, byte[] actual) {
    arrays.assertNullOrEmpty(info, failures, actual);
  }

  /**
   * Asserts that the given array is empty.
   *
   * @param info contains information about the assertion.
   * @param actual the given array.
   * @throws AssertionError if the given array is {@code null}.
   * @throws AssertionError if the given array is not empty.
   */
  public void assertEmpty(AssertionInfo info, byte[] actual) {
    arrays.assertEmpty(info, failures, actual);
  }

  /**
   * Asserts that the given array is not empty.
   *
   * @param info contains information about the assertion.
   * @param actual the given array.
   * @throws AssertionError if the given array is {@code null}.
   * @throws AssertionError if the given array is empty.
   */
  public void assertNotEmpty(AssertionInfo info, byte[] actual) {
    arrays.assertNotEmpty(info, failures, actual);
  }

  /**
   * Asserts that the number of elements in the given array is equal to the expected one.
   *
   * @param info contains information about the assertion.
   * @param actual the given array.
   * @param expectedSize the expected size of {@code actual}.
   * @throws AssertionError if the given array is {@code null}.
   * @throws AssertionError if the number of elements in the given array is different than the
   *     expected one.
   */
  public void assertHasSize(AssertionInfo info, byte[] actual, int expectedSize) {
    arrays.assertHasSize(info, failures, actual, expectedSize);
  }

  /**
   * Assert that the actual array has the same size as the other {@code Iterable}.
   *
   * @param info contains information about the assertion.
   * @param actual the given array.
   * @param other the group to compare
   * @throws AssertionError if the actual group is {@code null}.
   * @throws AssertionError if the other group is {@code null}.
   * @throws AssertionError if the actual group does not have the same size.
   */
  public void assertHasSameSizeAs(AssertionInfo info, byte[] actual, Iterable<?> other) {
    arrays.assertHasSameSizeAs(info, actual, other);
  }

  /**
   * Asserts that the given array contains the given values, in any order.
   *
   * @param info contains information about the assertion.
   * @param actual the given array.
   * @param values the values that are expected to be in the given array.
   * @throws NullPointerException if the array of values is {@code null}.
   * @throws IllegalArgumentException if the array of values is empty.
   * @throws AssertionError if the given array is {@code null}.
   * @throws AssertionError if the given array does not contain the given values.
   */
  public void assertContains(AssertionInfo info, byte[] actual, byte[] values) {
    arrays.assertContains(info, failures, actual, values);
  }

  /**
   * Verifies that the given array contains the given value at the given index.
   *
   * @param info contains information about the assertion.
   * @param actual the given array.
   * @param value the value to look for.
   * @param index the index where the value should be stored in the given array.
   * @throws AssertionError if the given array is {@code null} or empty.
   * @throws NullPointerException if the given {@code Index} is {@code null}.
   * @throws IndexOutOfBoundsException if the value of the given {@code Index} is equal to or
   *     greater than the size of the given array.
   * @throws AssertionError if the given array does not contain the given value at the given index.
   */
  public void assertContains(AssertionInfo info, byte[] actual, byte value, Index index) {
    arrays.assertContains(info, failures, actual, value, index);
  }

  /**
   * Verifies that the given array does not contain the given value at the given index.
   *
   * @param info contains information about the assertion.
   * @param actual the given array.
   * @param value the value to look for.
   * @param index the index where the value should be stored in the given array.
   * @throws AssertionError if the given array is {@code null}.
   * @throws NullPointerException if the given {@code Index} is {@code null}.
   * @throws AssertionError if the given array contains the given value at the given index.
   */
  public void assertDoesNotContain(AssertionInfo info, byte[] actual, byte value, Index index) {
    arrays.assertDoesNotContain(info, failures, actual, value, index);
  }

  /**
   * Asserts that the given array contains only the given values and nothing else, in any order.
   *
   * @param info contains information about the assertion.
   * @param actual the given array.
   * @param values the values that are expected to be in the given array.
   * @throws NullPointerException if the array of values is {@code null}.
   * @throws IllegalArgumentException if the array of values is empty.
   * @throws AssertionError if the given array is {@code null}.
   * @throws AssertionError if the given array does not contain the given values or if the given
   *     array contains values that are not in the given array.
   */
  public void assertContainsOnly(AssertionInfo info, byte[] actual, byte[] values) {
    arrays.assertContainsOnly(info, failures, actual, values);
  }

  public void assertContainsExactly(AssertionInfo info, byte[] actual, byte[] values) {
    arrays.assertContainsExactly(info, failures, actual, values);
  }

  /**
   * Asserts that the given array contains only once the given values.
   *
   * @param info contains information about the assertion.
   * @param actual the given array.
   * @param values the values that are expected to be in the given array.
   * @throws NullPointerException if the array of values is {@code null}.
   * @throws IllegalArgumentException if the array of values is empty.
   * @throws AssertionError if the given array is {@code null}.
   * @throws AssertionError if the given array does not contain the given values or if the given
   *     array contains more than once values.
   */
  public void assertContainsOnlyOnce(AssertionInfo info, byte[] actual, byte[] values) {
    arrays.assertContainsOnlyOnce(info, failures, actual, values);
  }

  /**
   * Verifies that the given array contains the given sequence of values, without any other values
   * between them.
   *
   * @param info contains information about the assertion.
   * @param actual the given array.
   * @param sequence the sequence of values to look for.
   * @throws AssertionError if the given array is {@code null}.
   * @throws NullPointerException if the given sequence is {@code null}.
   * @throws IllegalArgumentException if the given sequence is empty.
   * @throws AssertionError if the given array does not contain the given sequence of values.
   */
  public void assertContainsSequence(AssertionInfo info, byte[] actual, byte[] sequence) {
    arrays.assertContainsSequence(info, failures, actual, sequence);
  }

  /**
   * Verifies that the given array contains the given sequence of values (possibly with other values
   * between them).
   *
   * @param info contains information about the assertion.
   * @param actual the given array.
   * @param subsequence the subsequence of values to look for.
   * @throws AssertionError if the given array is {@code null}.
   * @throws NullPointerException if the given sequence is {@code null}.
   * @throws IllegalArgumentException if the given sequence is empty.
   * @throws AssertionError if the given array does not contain the given sequence of values.
   */
  public void assertContainsSubsequence(AssertionInfo info, byte[] actual, byte[] subsequence) {
    arrays.assertContainsSubsequence(info, failures, actual, subsequence);
  }

  /**
   * Asserts that the given array does not contain the given values.
   *
   * @param info contains information about the assertion.
   * @param actual the given array.
   * @param values the values that are expected not to be in the given array.
   * @throws NullPointerException if the array of values is {@code null}.
   * @throws IllegalArgumentException if the array of values is empty.
   * @throws AssertionError if the given array is {@code null}.
   * @throws AssertionError if the given array contains any of given values.
   */
  public void assertDoesNotContain(AssertionInfo info, byte[] actual, byte[] values) {
    arrays.assertDoesNotContain(info, failures, actual, values);
  }

  /**
   * Asserts that the given array does not have duplicate values.
   *
   * @param info contains information about the assertion.
   * @param actual the given array.
   * @throws NullPointerException if the array of values is {@code null}.
   * @throws IllegalArgumentException if the array of values is empty.
   * @throws AssertionError if the given array is {@code null}.
   * @throws AssertionError if the given array contains duplicate values.
   */
  public void assertDoesNotHaveDuplicates(AssertionInfo info, byte[] actual) {
    arrays.assertDoesNotHaveDuplicates(info, failures, actual);
  }

  /**
   * Verifies that the given array starts with the given sequence of values, without any other
   * values between them. Similar to <code>
   * {@link #assertContainsSequence(AssertionInfo, byte[], byte[])}</code>, but it also verifies
   * that the first element in the sequence is also the first element of the given array.
   *
   * @param info contains information about the assertion.
   * @param actual the given array.
   * @param sequence the sequence of values to look for.
   * @throws NullPointerException if the given argument is {@code null}.
   * @throws IllegalArgumentException if the given argument is an empty array.
   * @throws AssertionError if the given array is {@code null}.
   * @throws AssertionError if the given array does not start with the given sequence of values.
   */
  public void assertStartsWith(AssertionInfo info, byte[] actual, byte[] sequence) {
    arrays.assertStartsWith(info, failures, actual, sequence);
  }

  /**
   * Verifies that the given array ends with the given sequence of values, without any other values
   * between them. Similar to <code>{@link #assertContainsSequence(AssertionInfo, byte[], byte[])}
   * </code>, but it also verifies that the last element in the sequence is also the last element of
   * the given array.
   *
   * @param info contains information about the assertion.
   * @param actual the given array.
   * @param sequence the sequence of values to look for.
   * @throws NullPointerException if the given argument is {@code null}.
   * @throws IllegalArgumentException if the given argument is an empty array.
   * @throws AssertionError if the given array is {@code null}.
   * @throws AssertionError if the given array does not end with the given sequence of values.
   */
  public void assertEndsWith(AssertionInfo info, byte[] actual, byte[] sequence) {
    arrays.assertEndsWith(info, failures, actual, sequence);
  }

  /**
   * Concrete implementation of {@link ArraySortedAssert#isSorted()}.
   *
   * @param info contains information about the assertion.
   * @param actual the given array.
   */
  public void assertIsSorted(AssertionInfo info, byte[] actual) {
    arrays.assertIsSorted(info, failures, actual);
  }

  /**
   * Concrete implementation of {@link ArraySortedAssert#isSortedAccordingTo(Comparator)}.
   *
   * @param info contains information about the assertion.
   * @param actual the given array.
   * @param comparator the {@link Comparator} used to compare array elements
   */
  public void assertIsSortedAccordingToComparator(
      AssertionInfo info, byte[] actual, Comparator<? super Byte> comparator) {
    Arrays.assertIsSortedAccordingToComparator(info, failures, actual, comparator);
  }
}