assertTrue(ctx.isSupported(oid));
        assertTrue(ctx.isPreferredMech(oid));
    }

    @Test
    @DisplayName("isSupported returns false for null/unknown OIDs")
    void isSupported_unknownOrNull() {
        assertFalse(ctx.isSupported(null));
        assertFalse(ctx.isPreferredMech(null));
        assertFalse(ctx.isSupported(new ASN1ObjectIdentifier("1.3.6.1.4.1.99999")));
    }

    public LeaseV1CreateContextResponse getLeaseV1Context() {
        if (this.createContexts != null) {
            for (CreateContextResponse ctx : this.createContexts) {
                if (ctx instanceof LeaseV1CreateContextResponse) {
                    return (LeaseV1CreateContextResponse) ctx;
                }
            }
        }
        return null;
    }

    /**

        ctx.setMechs(updated);
        assertArrayEquals(updated, ctx.getMechs());
    }

    @Test
    @DisplayName("toString includes wrapped mechanism context")
    void testToString() {
        SpnegoContext ctx = newContext();
        when(this.mechContext.toString()).thenReturn("MECHCTX");
        assertEquals("SPNEGO[MECHCTX]", ctx.toString());
    }

            CIFSContext ctx = mock(CIFSContext.class);
            new SmbTreeConnectionTrace(ctx).getTreeType();
        }), Arguments.of("getConnectedShare()", (org.junit.jupiter.api.function.Executable) () -> {
            CIFSContext ctx = mock(CIFSContext.class);
            new SmbTreeConnectionTrace(ctx).getConnectedShare();
        }));
    }

@MockitoSettings(strictness = Strictness.LENIENT)
class SmbTransportImplTest {

    @Mock
    private CIFSContext ctx;
    @Mock
    private Configuration cfg;
    @Mock
    private Address address;

    private SmbTransportImpl transport;

    @BeforeEach
    void setUp() throws Exception {
        when(ctx.getConfig()).thenReturn(cfg);
        when(cfg.isSigningEnforced()).thenReturn(false);

        private void useContext(SSPContext ctx) throws Exception {
            ctx.getSigningKey();
            ctx.isEstablished();
            ctx.initSecContext(new byte[] { 1, 2, 3 }, 1, 1);
            ctx.getNetbiosName();
            ctx.isSupported(new ASN1ObjectIdentifier("1.2.3"));
            ctx.isPreferredMech(new ASN1ObjectIdentifier("1.2.3"));
            ctx.getFlags();
            ctx.getSupportedMechs();

    void resolveSids_zeroLength_doesNothing() throws Exception {
        CIFSContext ctx = mock(CIFSContext.class);
        SIDCacheImpl cache = Mockito.spy(new SIDCacheImpl(ctx));

        jcifs.SID[] arr = new jcifs.SID[] { sid("S-1-1-0") };
        cache.resolveSids(ctx, "server", arr, 0, 0);
        verify(cache, never()).resolveSids0(any(), any(), any());
    }

    @Test

        pool = new SmbTransportPoolImpl();

        // Setup default mock behaviors
        when(ctx.getConfig()).thenReturn(config);
        when(ctx.getNameServiceClient()).thenReturn(nameSvc);
        when(ctx.getCredentials()).thenReturn(creds);
        when(ctx.getTransportPool()).thenReturn(pool);

        // Default config values
        when(config.getLocalAddr()).thenReturn(null);

        byte[] ctx = new byte[0x40];
        int ci = 0;
        SMBUtil.writeInt4(0, ctx, ci); // Next = 0
        ci += 4;
        SMBUtil.writeInt2(0x10, ctx, ci); // NameOffset
        SMBUtil.writeInt2(4, ctx, ci + 2); // NameLength
        ci += 4;
        SMBUtil.writeInt2(0, ctx, ci); // Reserved
        SMBUtil.writeInt2(0x20, ctx, ci + 2); // DataOffset
        ci += 4;

     * @param andx the next command in the AndX chain, or null
     */
    public SmbComTreeConnectAndX(final CIFSContext ctx, final ServerData server, final String path, final String service,
            final ServerMessageBlock andx) {
        super(ctx.getConfig(), SMB_COM_TREE_CONNECT_ANDX, andx);
        this.ctx = ctx;
        this.server = server;
        this.path = path;
        this.service = service;
    }

    @Override