// Password is null, so callback is not set (remains null)
        assertNull(pc.getPassword());
    }

    @Test
    @DisplayName("handle: null password leaves PasswordCallback unset")
    void testHandleWithNullPasswordDoesNotSet() throws Exception {
        // Spy to override getPasswordAsCharArray() to return null
        JAASAuthenticator spyAuth = spy(new JAASAuthenticator("DOM", "user", null));

        // Test clearing a flag that is not set
        message.setFlags(0b1000);
        message.setFlag(0b0001, false);
        assertEquals(0b1000, message.getFlags(), "Clearing an unset flag should not change other flags.");
    }

    @Test
    void testReadULong() {
        // Test readULong with various values
        byte[] data = new byte[8];

     */
    String getNetbiosHostname();

    /**
     *
     * Property {@code jcifs.smb.client.logonShare}
     *
     * @return share to connect to during authentication, if unset connect to IPC$
     */
    String getLogonShare();

    /**
     *
     *
     * Property {@code jcifs.smb.client.domain}
     *
     * @return default credentials, domain name
     */

        String s = session.toString();
        assertTrue(s.contains("targetHost=server.example"));
        assertTrue(s.contains("targetDomain=EXAMPLE"));
    }

    @Test
    @DisplayName("getExpiration: null when unset, value when positive")
    void testGetExpiration() {
        SmbSessionImpl session = newSession();
        assertNull(session.getExpiration());
        setField(session, "expiration", 123L);

    /**
     * Return the attributes of this file. Attributes are represented as a
     * bitset that must be masked with <code>ATTR_*</code> constants to determine
     * if they are set or unset. The value returned is suitable for use with
     * the <code>setAttributes()</code> method.
     *
     * @return the <code>ATTR_*</code> attributes associated with this file