assertNull(ex3.getCause());
            assertNull(ex3.getMessage());
        });
    }

    @Test
    @DisplayName("toString should include class name and message")
    void testToString() {
        // Given
        SpnegoException ex = new SpnegoException("hello");

        // When
        String s = ex.toString();

        // Then

        // This method does nothing and should return 0.
        assertEquals(0, bytesRead);
    }

    /**
     * Test the toString method.
     */
    @Test
    void testToString() {
        SmbComWriteAndXResponse response = new SmbComWriteAndXResponse();
        response.count = 12345L;

        String result = response.toString();

            assertEquals(dataLength, response.dataLength);
            assertEquals(dataOffset, response.dataOffset);
        }
    }

    @Test
    public void testToString() {
        response.dataCompactionMode = 1;
        response.dataLength = 1024;
        response.dataOffset = 54;

        String result = response.toString();

        verify(mockPipeIn, times(1)).receive(buffer, bufferIndex, len);
    }

    /**
     * Tests the toString method.
     */
    @Test
    void testToString() {
        String result = response.toString();
        assertNotNull(result, "toString() should not return null.");
    }

    // Helper method to access the super.toString() for verification,

            try {
                value = item.getString(encoding);
                haveValue = true;
            } catch (final Exception e) {}
        }
        if (!haveValue) {
            try {
                value = item.getString(Charset.forName("ISO-8859-1"));
            } catch (final java.io.UnsupportedEncodingException uee) {
                value = item.getString();
            } catch (final IOException e) {

            final String pattern = ResourceBundleUtil.getString(resourceBundle, key);
            if (pattern != null) {
                return pattern;
            }
        }
        return resourceBundle.getString(messageCode);
    }

    /**
     * Returns the system name.
     *
     * @param messageCode

    }

    /**
     * Test for the toString method.
     * It should return a string representation of the object.
     */
    @Test
    void testToString() {
        // The actual toString() method uses super.toString(), so we mimic that for the check.
        // A direct string comparison might be brittle, so we check for the class name and brackets.

        assertEquals(mockData, dfsReferral.getData(), "getData() should return the DfsReferralData object passed to the constructor.");
    }

    /**
     * Test the toString method.
     */
    @Test
    void testToString() {
        // Create a mock DfsReferralData object
        DfsReferralData mockData = mock(DfsReferralData.class);
        String expectedToString = "Mock DfsReferralData";

        // Original key should remain unchanged
        assertEquals(0x01, key.getKey()[0]);
    }

    @Test
    @DisplayName("Should create readable string representation")
    void testToString() {
        byte[] testBytes = new byte[] { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F };

        Smb2LeaseKey key = new Smb2LeaseKey(testBytes);

            case 1: // Key
                break;
            case 2: // Realm
                DERGeneralString derRealm = ASN1Util.as(DERGeneralString.class, tagged);
                this.userRealm = derRealm.getString();
                break;
            case 3: // Principal
                ASN1Sequence principalSequence = ASN1Util.as(ASN1Sequence.class, tagged);