CIFSContext context = SingletonContext.getInstance();
        assertNotNull(context);
        assertEquals("CustomOS", context.getConfig().getNativeOs());
        assertEquals("CustomLanman", context.getConfig().getNativeLanman());
    }

    @Test
    void testInitAlreadyInitializedThrowsException() throws CIFSException {
        // Test attempting to initialize when already initialized

            log.debug("Ignoring invalid initial token", e1);
        }

        return new SpnegoContext(tc.getConfig(), setupTargetName(tc, host, new NtlmContext(tc, this, doSigning)));
    }

    private static SSPContext setupTargetName(CIFSContext tc, String host, NtlmContext ntlmContext) {
        if (host != null && tc.getConfig().isSendNTLMTargetName()) {
            ntlmContext.setTargetName(String.format("cifs/%s", host));
        }

        lenient().when(tree.isConnected()).thenReturn(true);

        // CIFS context returns same config to build responses during initResponse
        lenient().when(cifsContext.getConfig()).thenReturn(config);
    }

    @AfterEach
    void teardown() {
        // No global state to reset beyond mocks
    }

    static Stream<String> wildcardProvider() {

                /*
                 * NtTrans Notify Change Request / Response
                 */
                req = new NtTransNotifyChange(th.getConfig(), this.handle.getFid(), this.filter, this.recursive);
                resp = new NtTransNotifyChangeResponse(th.getConfig());
            }

            if (log.isTraceEnabled()) {
                log.trace("Sending NtTransNotifyChange for " + this.handle);
            }

        }

        if (this.useNTSmbs) {
            this.reqx = new SmbComWriteAndX(th.getConfig());
            this.rspx = new SmbComWriteAndXResponse(th.getConfig());
        } else {
            this.req = new SmbComWrite(th.getConfig());
            this.rsp = new SmbComWriteResponse(th.getConfig());
        }
    }

    /**
     * Ensures that the file descriptor is openend
     *

            final long ts) {
        if (!tc.getConfig().isEnforceSpnegoIntegrity() && serverAvPairs == null) {
            return null;
        }
        if (serverAvPairs == null) {
            serverAvPairs = new LinkedList<>();
        }

        if (getFlag(NTLMSSP_NEGOTIATE_SIGN)
                && (tc.getConfig().isEnforceSpnegoIntegrity() || haveServerTimestamp && !tc.getConfig().isDisableSpnegoIntegrity())) {

            }
            final TransPeekNamedPipe req = new TransPeekNamedPipe(th.getConfig(), this.handle.getUncPath(), fd.getFid());
            final TransPeekNamedPipeResponse resp = new TransPeekNamedPipeResponse(th.getConfig());
            th.send(req, resp, RequestParam.NO_RETRY);
            if (resp.getStatus() == TransPeekNamedPipeResponse.STATUS_DISCONNECTED

    private static final Map<String, byte[]> TARGET_INFO_CACHE = new HashMap<>();

    private static byte[] getDefaultTargetInfo(final CIFSContext tc) {
        final String domain = tc.getConfig().getDefaultDomain();
        byte[] ti = TARGET_INFO_CACHE.get(domain);
        if (ti != null) {
            return ti;
        }

        ti = makeTargetInfo(tc, domain);
        TARGET_INFO_CACHE.put(domain, ti);

        if (th.hasCapability(SmbConstants.CAP_LARGE_READX)) {
            this.largeReadX = true;
            this.readSizeFile =
                    Math.min(th.getConfig().getReceiveBufferSize() - 70, th.areSignaturesActive() ? 0xFFFF - 70 : 0xFFFFFF - 70);
            log.debug("Enabling LARGE_READX with " + this.readSizeFile);
        } else {
            log.debug("LARGE_READX disabled");

        if (locator.getURL().getHost().isEmpty()) {
            this.request = new NetServerEnum2(th.getConfig(), th.getOEMDomainName(), NetServerEnum2.SV_TYPE_DOMAIN_ENUM);
        } else if (this.workgroup) {
            this.request = new NetServerEnum2(th.getConfig(), locator.getURL().getHost(), NetServerEnum2.SV_TYPE_ALL);
        } else {