// Use separate contexts for different operations
        CIFSContext createContext = createFreshContext();
        String sourceFileName = "source_" + timestamp + ".txt";
        String targetFileName = "target_" + timestamp + ".txt";

        SmbFile sourceFile = new SmbFile(baseUrl + "shared/" + sourceFileName, createContext);

        // Create source file with content

    }

    /**
     *
     * {@inheritDoc}
     *
     * @see jcifs.smb.CredentialsInternal#createContext(jcifs.CIFSContext, java.lang.String, java.lang.String, byte[],
     *      boolean)
     */
    @Override
    public SSPContext createContext(CIFSContext tc, String targetDomain, String host, byte[] initialToken, boolean doSigning)
            throws SmbException {
        checkNotClosed();

            clientCreds = manager.createCredential(this.clientName, userLifetime, mechOid, GSSCredential.INITIATE_ONLY);
        } else {
            this.clientName = null;
        }

        this.gssContext = manager.createContext(this.serviceName, mechOid, clientCreds, contextLifetime);

        this.gssContext.requestAnonymity(false);
        this.gssContext.requestSequenceDet(false);
        this.gssContext.requestConf(false);

        lenient().when(gssManager.createName(anyString(), any(), any())).thenReturn(serviceName);
        lenient().when(gssManager.createName(anyString(), any())).thenReturn(serviceName);
        lenient().when(gssManager.createContext(any(), any(), any(), anyInt())).thenReturn(gssContext);

        // Create Kerb5Context with mocked dependencies
        ctx = new Kerb5Context("host.example", "cifs", null, 0, 0, null);
    }

    @AfterEach

        assertThrows(IllegalStateException.class, () -> {
            // This would normally be called during authentication
            auth.createContext(null, null, "host", null, false);
        });
    }

    /**
     * Test TTL with different constructor types
     */
    @Test