// Then - Buffer should have expected size
        assertNotNull(buffer, "Buffer should not be null");
        assertEquals(SmbComTransaction.TRANSACTION_BUF_SIZE, buffer.length, "Buffer should have TRANSACTION_BUF_SIZE");

        // The validation in getBuffer() ensures size is within bounds (0 < size <= 1MB)
        assertTrue(buffer.length > 0, "Buffer size should be positive");

            assertTrue(methodNames.contains("getConfig"), "Should contain getConfig method");
            assertTrue(methodNames.contains("unwrap"), "Should contain unwrap method");
            assertTrue(methodNames.contains("getContext"), "Should contain getContext method");
        }

        @Test
        @DisplayName("Should be a public interface")

        String hostName = mockAddress.getHostName();

        // Then
        assertEquals(expectedHostName, hostName, "Should return configured hostname");
        assertNotNull(hostName, "Host name should not be null");
    }

    @Test
    @DisplayName("getHostAddress should return valid IP address string")
    void testGetHostAddressContract() {
        // Given
        String expectedAddress = "192.168.1.100";

        // Manually unblock
        assertTrue(rateLimiter.unblockIp(ip), "Manual unblock should succeed");

        // Should be allowed again
        assertTrue(rateLimiter.checkAttempt("user7", ip), "Should be allowed after manual unblock");
    }

    @Test
    public void testNullUsername() throws Exception {
        // Null username should be handled gracefully

    }

    @Test
    @DisplayName("Should handle empty byte array")
    void testToHexStringEmpty() {
        // Given
        byte[] data = {};

        // When
        String result = Hexdump.toHexString(data);

        // Then
        assertNotNull(result);
        assertEquals("", result);
    }

    @Test
    @DisplayName("Should handle null byte array")
    void testToHexStringNull() {

        testResponseBuffer = new byte[] { 0x05, 0x06, 0x07, 0x08 };
        negotiation = new SmbNegotiation(mockRequest, mockResponse, testRequestBuffer, testResponseBuffer);
    }

    @Test
    @DisplayName("Constructor should properly initialize all fields")
    void testConstructor() {
        // Verify all fields are properly initialized
        assertNotNull(negotiation);
        assertSame(mockRequest, negotiation.getRequest());

            }
        });

        MockSMailPostingDiscloser discloser = new MockSMailPostingDiscloser();

        // Should return early without doing anything
        try {
            notificationHelper.sendToSlack(null, discloser);
        } catch (Exception e) {
            fail("sendToSlack() should not throw an exception with blank URLs: " + e.getMessage());
        }
    }

        // The offset should point to the location after the fixed structure (relative to header start)
        int expectedOffset = Smb2Constants.SMB2_HEADER_LENGTH + 24;
        while ((expectedOffset % 8) != 0) {
            expectedOffset++; // Account for pad8
        }
        assertEquals(expectedOffset, securityBufferOffset);
    }

    @Test
    @DisplayName("Should handle large token correctly")

        assertTrue(config.isUseMultiChannel(), "Multi-channel should be enabled by default");
        assertEquals(4, config.getMaxChannels(), "Default max channels should be 4");
        assertEquals(1, config.getChannelBindingPolicy(), "Default binding policy should be preferred");
        assertEquals("adaptive", config.getLoadBalancingStrategy(), "Default strategy should be adaptive");

        assertEquals(1, t.numThreads, "Default numThreads should be 1");
        assertEquals(1, t.numIter, "Default numIter should be 1");
        assertEquals(100L, t.delay, "Default delay should be 100");
        assertNull(t.url, "URL should be null by default");
        assertEquals(0, t.numComplete, "numComplete should start at 0");
        assertEquals(0L, t.ltime, "ltime should start at 0");
    }

    @Test