}).when(transport).send(any(ServerMessageBlock.class), any(ServerMessageBlock.class));

        session.send(req, resp);
        // Response state should be reset
        assertFalse(resp.received, "Response flag should be reset");
        // transport.send should be called at least once (for sessionSetup and the actual request)
        verify(transport, atLeastOnce()).send(any(ServerMessageBlock.class), any(ServerMessageBlock.class));

        }

        @Test
        @DisplayName("Should throw exception on null buffer")
        void testEncodeWithNullBuffer() {
            assertThrows(IllegalArgumentException.class, () -> testRequest.encode(null, 0), "Should throw exception for null buffer");
        }

        @Test
        @DisplayName("Should throw exception on negative index")
        void testEncodeWithNegativeIndex() {

    class SamrCloseHandleTests {

        @Test
        @DisplayName("Should construct with correct opnum")
        void testConstructorAndOpnum() {
            // When: Creating close handle message
            samr.SamrCloseHandle message = new samr.SamrCloseHandle(mockPolicyHandle);

            // Then: Should have correct opnum and handle
            assertEquals(0x01, message.getOpnum());

        assertNotNull(region, "Memory region should not be null");
        assertEquals(buffer, region.getBuffer(), "Buffer should match");
        assertEquals(1024, region.getSize(), "Size should match buffer size");
        assertTrue(region.hasAccess(RdmaAccess.LOCAL_READ), "Should have local read access");
        assertTrue(region.hasAccess(RdmaAccess.LOCAL_WRITE), "Should have local write access");

        }

        @Test
        @DisplayName("Should create instance with null ciphers")
        void testConstructorWithNullCiphers() {
            EncryptionNegotiateContext context = new EncryptionNegotiateContext(mockConfig, null);

            assertNotNull(context);
            assertNull(context.getCiphers());
        }

        @Test
        @DisplayName("Should create instance with empty ciphers array")

        }

        @Test
        @DisplayName("Should initialize DfsReferralResponseBuffer")
        void testDfsResponseBufferInitialization() {
            assertNotNull(response.getDfsResponse());
            assertTrue(response.getDfsResponse() instanceof DfsReferralResponseBuffer);
        }

        @Test
        @DisplayName("Should throw NullPointerException with null configuration")

    }

    @Test
    @DisplayName("Should identify success status")
    void testSuccessStatusIdentification() {
        // Given
        int successStatus = NtStatus.NT_STATUS_SUCCESS;

        // When/Then
        assertEquals(0x00000000, successStatus);
        // Success status should be zero
        assertTrue(successStatus == 0);
    }

    @Test
    @DisplayName("Should identify error status codes")

        // Verify - should consume 28 bytes even though len is 24
        assertEquals(28, bytesConsumed, "Should consume 28 bytes");

        byte[] resumeKey = response.getResumeKey();
        assertNotNull(resumeKey, "Resume key should not be null");
        assertEquals(24, resumeKey.length, "Resume key should be 24 bytes");

        // Verify all bytes are 0xAA

        @Test
        @DisplayName("Should initialize remaining to zero")
        void testInitialRemainingValue() {
            assertEquals(0, response.getRemaining());
        }
    }

    @Nested
    @DisplayName("Getter Tests")
    class GetterTests {

        @Test
        @DisplayName("Should get count value")
        void testGetCount() {
            // Initial value should be 0

            fail("Should throw IllegalArgumentException for null engine");
        } catch (IllegalArgumentException e) {
            assertEquals("name or scriptEngine is null.", e.getMessage());
        }
    }

    // Test add method with both null parameters
    public void test_add_bothNull() {
        try {
            scriptEngineFactory.add(null, null);