*/
    @Test
    void testIsCredentialTypeCorrectWithNullData() {
        // The constructor check `if (!isCredentialTypeCorrect())` handles the null case.
        // We verify that the constructor throws an exception, which indirectly tests the desired logic.
        assertThrows(PACDecodingException.class, () -> new PacCredentialType(null));
    }

    /**

        // Verify that data was written (should write 22 bytes based on implementation)
        assertEquals(22, result, "writeParameterWordsWireFormat should write 22 bytes");
    }

    @Test
    void testWriteBytesWireFormat() {
        byte[] dst = new byte[1024];
        int result = setupAndX.writeBytesWireFormat(dst, 0);

        // Verify that data was written

    // If add is supported, verify that IMMUTABLE is not reported.
    assertFalse(collection.spliterator().hasCharacteristics(Spliterator.IMMUTABLE));
  }

  @CollectionFeature.Require(SUPPORTS_REMOVE)
  public void testSpliteratorNotImmutable_collectionAllowsRemove() {
    // If remove is supported, verify that IMMUTABLE is not reported.

        String msg = "\u00A1\u00A2"; // two Unicode characters
        byte[] encoded = encodeUnicode(msg);
        assertEquals(4, encoded.length, "Encoded Unicode string should be 4 bytes");

        // Verify little-endian encoding
        assertEquals((byte) 0xA1, encoded[0], "First byte of first character");
        assertEquals((byte) 0x00, encoded[1], "Second byte of first character");

        // When
        MsrpcSamrConnect2 msrpcSamrConnect2 = new MsrpcSamrConnect2(testServer, testAccess, mockPolicyHandle);

        // Then - Use reflection to verify protected field
        Field ptypeField = DcerpcMessage.class.getDeclaredField("ptype");
        ptypeField.setAccessible(true);
        int ptypeValue = (int) ptypeField.get(msrpcSamrConnect2);

    list.add(new MockRunnable(countDownLatch), exec);
    list.add(new MockRunnable(countDownLatch), exec);
    assertEquals(3L, countDownLatch.getCount());

    list.execute();

    // Verify that all of the runnables execute in a reasonable amount of time.
    assertTrue(countDownLatch.await(1L, SECONDS));
  }

  public void testExecute_idempotent() {
    AtomicInteger runCalled = new AtomicInteger();

        pacGroup = new PacGroup(mockSid, attributes);
    }

    /**
     * Test method for {@link jcifs.pac.PacGroup#PacGroup(jcifs.smb.SID, int)}.
     */
    @Test
    void testConstructor() {
        // Verify that the constructor correctly sets the id and attributes
        assertEquals(mockSid, pacGroup.getId(), "The SID should be correctly set in the constructor.");

        AvTimestamp avTimestamp = new AvTimestamp(timestamp);

        assertNotNull(avTimestamp);
        assertEquals(AvPair.MsvAvTimestamp, avTimestamp.getType());
        assertEquals(timestamp, avTimestamp.getTimestamp()); // Verify encoding and decoding
    }

    /**
     * Test getTimestamp method with a positive timestamp.
     */
    @Test
    public void testGetTimestampPositive() {
        long expectedTimestamp = 123456789012345L;

- [ ] Write unit tests that match behavioral changes, where the tests fail if the changes to the runtime are not applied.
  This may not always be possible but is a best-practice.
- [ ] Run `mvn verify` to make sure basic checks pass.
  A more thorough check will be performed on your pull request automatically.
- [ ] You have run the [Core IT][core-its] successfully.

     */
    byte[] calculateMIC(byte[] data) throws CIFSException;

    /**
     * Verifies a Message Integrity Code (MIC) for the given data.
     * @param data the data to verify
     * @param mic the MIC to verify against
     * @throws CIFSException if the MIC verification fails or an error occurs
     */
    void verifyMIC(byte[] data, byte[] mic) throws CIFSException;

    /**