// Given
        when(mockTreeHandle.isSMB2()).thenReturn(true);
        when(mockTreeHandle.getSendBufferSize()).thenReturn(65536);
        when(mockFileHandle.isValid()).thenReturn(false, true);
        when(mockFileHandle.getFileId()).thenReturn(new byte[16]);
        when(mockFileHandle.acquire()).thenReturn(mockFileHandle);

        doNothing().when(messageBlock).setMid(mid);
        doNothing().when(messageBlock).setCommand(command);
        doNothing().when(messageBlock).setUid(uid);
        doNothing().when(messageBlock).setSessionId(sessionId);
        doNothing().when(messageBlock).setExtendedSecurity(true);
        doNothing().when(messageBlock).setDigest(digest);
        doNothing().when(messageBlock).setResponse(response);

        when(response1.getNextResponse()).thenReturn(response2);
        when(response2.getNextResponse()).thenReturn(response3);
        when(response3.getNextResponse()).thenReturn(null);

        when(response1.isAsync()).thenReturn(false);
        when(response2.isAsync()).thenReturn(true);
        when(response3.isAsync()).thenReturn(false);

        // When - test chain navigation and properties

        when(pipe.ensureTreeConnected()).thenReturn(tree);
        when(tree.acquire()).thenReturn(tree);
        when(tree.isSMB2()).thenReturn(true);
        when(pipe.openUnshared(anyString(), anyInt(), anyInt(), anyInt(), anyInt(), anyInt())).thenReturn(fileHandle);
        when(fileHandle.acquire()).thenReturn(fileHandle);
        when(fileHandle.getTree()).thenReturn(tree);

        SmbPipeInputStream stream = newStreamWithMinimalStubs(true);

        when(handle.ensureOpen()).thenReturn(fd);
        when(fd.getTree()).thenReturn(tree);
        when(tree.isSMB2()).thenReturn(true);
        when(tree.getConfig()).thenReturn(config);
        when(config.getTransactionBufferSize()).thenReturn(65535);
        when(tree.send(any(Smb2IoctlRequest.class), eq(RequestParam.NO_RETRY))).thenThrow(new SmbException("boom"));

    void getFlags_allFalse() {
        when(gssContext.getCredDelegState()).thenReturn(false);
        when(gssContext.getMutualAuthState()).thenReturn(false);
        when(gssContext.getReplayDetState()).thenReturn(false);
        when(gssContext.getSequenceDetState()).thenReturn(false);
        when(gssContext.getAnonymityState()).thenReturn(false);
        when(gssContext.getConfState()).thenReturn(false);

        when(smbFileHandle.isValid()).thenReturn(true);
        assertTrue(smbFileHandle.isValid(), "isValid should return true when the handle is valid.");
        verify(smbFileHandle, times(1)).isValid();
    }

    /**
     * Test isValid() when the handle is invalid.
     */
    @Test
    void testIsValid_whenInvalid() {
        when(smbFileHandle.isValid()).thenReturn(false);

        }

        when(cifsContext.getTransportPool()).thenReturn(transportPool);
        when(cifsContext.getNameServiceClient()).thenReturn(nameServiceClient);
        lenient().when(cifsContext.getConfig()).thenReturn(configuration);
        lenient().when(configuration.getDefaultDomain()).thenReturn("TEST_DOMAIN");

        SmbResourceLocator context2 = mock(SmbResourceLocator.class);
        when(context2.getShare()).thenReturn("share");
        when(context2.getDfsReferral()).thenReturn(null);
        when(context2.getUNCPath()).thenReturn("\\");
        when(context2.getURLPath()).thenReturn("/share/");
        when(context2.getServer()).thenReturn("server");

        base2.resolveInContext(context2, "sub/child");

        lenient().when(request.getSession()).thenReturn(session);
        lenient().when(request.getSession(false)).thenReturn(session);
        lenient().when(request.getSession(true)).thenReturn(session);

        // Setup default session attribute behavior
        lenient().when(session.getAttribute(anyString())).thenReturn(null);

        // Setup SmbFile mock
        lenient().when(smbFile.getLocator()).thenReturn(locator);