void testMechanismEdges() {
            DummySSPContext empty = new DummySSPContext(new byte[] { 1 }, false, "", new ASN1ObjectIdentifier[0], 0, false);
            assertFalse(empty.isSupported(new ASN1ObjectIdentifier("1.2.3")));
            assertFalse(empty.isPreferredMech(new ASN1ObjectIdentifier("1.2.3")));
            assertFalse(empty.isPreferredMech(null));

   * otherwise returns an empty stream.
   */
  public static <T> Stream<T> stream(com.google.common.base.Optional<T> optional) {
    return optional.isPresent() ? Stream.of(optional.get()) : Stream.empty();
  }

  /**
   * If a value is present in {@code optional}, returns a stream containing only that element,
   * otherwise returns an empty stream.
   *

     * If the virtual host is blank or null, returns an empty string.
     *
     * @param entity the RelatedQuery entity to extract the host key from
     * @return the virtual host key, or empty string if blank or null
     */
    protected String getHostKey(final RelatedQuery entity) {
        final String key = entity.getVirtualHost();
        return StringUtil.isBlank(key) ? StringUtil.EMPTY : key;
    }

    /**

    assertEquals(Object[].class, array.getClass());
  }

  public void testToArray_emptyArray() {
    E[] empty = getSubjectGenerator().createArray(0);
    E[] array = collection.toArray(empty);
    assertEquals(
        "toArray(emptyT[]) should return an array of type T", empty.getClass(), array.getClass());
    assertEquals("toArray(emptyT[]).length:", getNumElements(), array.length);

        assertArrayEquals(emptyHash, avChannelBindings.getRaw(), "Value should be an empty array when empty hash is provided");
    }

    /**
     * Test that the constructor stores the reference to the input byte array.
     * Note: The implementation does not create a defensive copy.
     */
    @Test
    void testConstructorStoresReference() {

     *            The fully qualified name of the desired class. Must not be {@literal null} or empty.
     * @param loader
     *            The class loader to use to load the class
     * @return The {@link Class} object for the class with the specified name
     * @throws EmptyArgumentException
     *             If the class name is {@literal null} or empty
     * @throws ClassNotFoundRuntimeException
     *             If the class cannot be found

     *
     * @param id the unique identifier of the data configuration
     * @return an OptionalEntity containing the DataConfig if found, empty otherwise
     * @throws IllegalArgumentException if id is null or empty
     */
    public OptionalEntity<DataConfig> getDataConfig(final String id) {
        return dataConfigBhv.selectByPK(id);
    }

    /**

   * otherwise returns an empty stream.
   */
  public static <T> Stream<T> stream(com.google.common.base.Optional<T> optional) {
    return optional.isPresent() ? Stream.of(optional.get()) : Stream.empty();
  }

  /**
   * If a value is present in {@code optional}, returns a stream containing only that element,
   * otherwise returns an empty stream.
   *

 */
public class XmlUtilTest extends PlainTestCase {

    public void test_escapeXml_null() {
        // Test null input
        assertEquals(StringUtil.EMPTY, XmlUtil.escapeXml(null));
    }

    public void test_escapeXml_empty() {
        // Test empty string
        assertEquals("", XmlUtil.escapeXml(""));
    }

    public void test_escapeXml_basic() {
        // Test basic XML escaping

     * <p>
     * This method uses {@link java.util.Base64.Encoder} for encoding.
     * </p>
     *
     * @param inData
     *            The data to encode
     * @return The encoded data, or an empty string if the input is null or empty
     */
    public static String encode(final byte[] inData) {
        if (ArrayUtil.isEmpty(inData)) {
            return "";
        }
        return Base64.getEncoder().encodeToString(inData);