assertTrue(preauth instanceof NegotiateContextRequest);
            assertTrue(encryption instanceof NegotiateContextRequest);
        }

        @Test
        @DisplayName("Should verify mock implementation")
        void testMockImplementation() {
            NegotiateContextRequest mockRequest = mock(NegotiateContextRequest.class);
            when(mockRequest.getContextType()).thenReturn(0xFF);

        when(mockRequest.getCapabilities()).thenReturn(Smb2Constants.SMB2_GLOBAL_CAP_DFS);
        when(mockRequest.getNegotiateContexts())
                .thenReturn(new NegotiateContextRequest[] { createMockPreauthContext(), createMockEncryptionContext() });

        // Setup negotiate contexts
        NegotiateContextResponse[] contexts =

    class InterfaceImplementationTests {

        @Test
        @DisplayName("Should implement NegotiateContextRequest interface")
        void testImplementsNegotiateContextRequest() {
            EncryptionNegotiateContext context = new EncryptionNegotiateContext();

            assertTrue(context instanceof NegotiateContextRequest);
        }

        @Test

        when(mockConfig.isEncryptionEnabled()).thenReturn(true);

        // When
        request = new Smb2NegotiateRequest(mockConfig, 0);

        // Then
        NegotiateContextRequest[] contexts = request.getNegotiateContexts();
        assertNotNull(contexts);
        assertEquals(2, contexts.length);

        // Verify preauth context

            log.error("Server returned no hash selection");
            return false;
        }

        PreauthIntegrityNegotiateContext rpc = null;
        for (final NegotiateContextRequest rnc : req.getNegotiateContexts()) {
            if (rnc instanceof PreauthIntegrityNegotiateContext) {
                rpc = (PreauthIntegrityNegotiateContext) rnc;
            }
        }

    class InterfaceImplementationTests {

        @Test
        @DisplayName("Should implement NegotiateContextRequest interface")
        void testImplementsNegotiateContextRequest() {
            PreauthIntegrityNegotiateContext context = new PreauthIntegrityNegotiateContext();

            assertTrue(context instanceof NegotiateContextRequest);
        }

        @Test