* maximum length, and pointer to the actual string data.
 */
public class PacUnicodeString {

    private final short length;
    private final short maxLength;
    private final int pointer;

    /**
     * Constructs a new PacUnicodeString instance.
     *
     * @param length the actual length of the string in bytes

    }

    /**
     * Tests the {@link PacUnicodeString#check(String)} method with a valid string.
     *
     * @throws PACDecodingException if the check fails, which is not expected in this test.
     */
    @Test
    void testCheck_withValidString() throws PACDecodingException {
        // Corresponds to a string of length 5 (10 bytes for UTF-16)
        PacUnicodeString pacString = new PacUnicodeString((short) 10, (short) 20, 100);

        assertEquals("", result);
    }

    @Test
    @DisplayName("Test PacUnicodeString check method with null pointer")
    void testPacUnicodeStringCheckWithNullPointer() throws Exception {
        // When pointer is 0, the string should be null
        PacUnicodeString unicodeString = new PacUnicodeString((short) 0, (short) 0, 0);

        // check() expects null when pointer is 0 but doesn't accept empty string

            final PacUnicodeString userNameString = pacStream.readUnicodeString();
            final PacUnicodeString userDisplayNameString = pacStream.readUnicodeString();
            final PacUnicodeString logonScriptString = pacStream.readUnicodeString();
            final PacUnicodeString profilePathString = pacStream.readUnicodeString();
            final PacUnicodeString homeDirectoryString = pacStream.readUnicodeString();

     * @return the PAC Unicode string object
     * @throws IOException if an I/O error occurs
     * @throws PACDecodingException if the string structure is malformed
     */
    public PacUnicodeString readUnicodeString() throws IOException, PACDecodingException {
        final short length = readShort();
        final short maxLength = readShort();
        final int pointer = readInt();

        // length=4, maxLength=4, pointer=0x1234
        byte[] data = new byte[] { 0x04, 0x00, 0x04, 0x00, 0x34, 0x12, 0x00, 0x00 };
        PacDataInputStream pdis = createInputStream(data);
        PacUnicodeString str = pdis.readUnicodeString();
        assertEquals(4, str.getLength());
        assertEquals(4, str.getMaxLength());
        assertEquals(0x1234, str.getPointer());
    }

    @Test