// Set up mock behaviors
        when(mockContext.getConfig()).thenReturn(mockConfig);
        when(mockContext.getCredentials()).thenReturn(mockCredentials);
        when(mockContext.getTransportPool()).thenReturn(mockTransportPool);
        when(mockConfig.getDfsTtl()).thenReturn(300L);

        // Mock transport to throw IOException - simulating connection failure

        FileEntry mock = mock(FileEntry.class);
        when(mock.getName()).thenReturn("test.txt");
        when(mock.getType()).thenReturn(1);
        when(mock.getAttributes()).thenReturn(128);
        when(mock.createTime()).thenReturn(1_500L);
        when(mock.lastModified()).thenReturn(1_800L);
        when(mock.length()).thenReturn(100L);

        assertEquals("test.txt", mock.getName());

        when(session.getConfig()).thenReturn(config);
        when(session.getContext()).thenReturn(context);
        when(session.getTransport()).thenReturn(transport);
        when(session.acquire()).thenReturn(session);
        when(config.isTraceResourceUsage()).thenReturn(false);
        when(context.getConfig()).thenReturn(config);
        when(session.isConnected()).thenReturn(true);
    }

        when(mockConfig.isDfsDisabled()).thenReturn(false);
        when(mockContext.getCredentials()).thenReturn(mockCredentials);
        when(mockCredentials.getUserDomain()).thenReturn(null);
        assertFalse(dfsResolver.isTrustedDomain(mockContext, "anyDomain"));
    }

    @Test
    void testIsTrustedDomain_EmptyUserDomain() throws CIFSException {
        when(mockConfig.isDfsDisabled()).thenReturn(false);

        // Test different cases
        when(mockNetbiosName.getName()).thenReturn(upperCase);
        assertEquals(upperCase, mockNetbiosName.getName());

        when(mockNetbiosName.getName()).thenReturn(lowerCase);
        assertEquals(lowerCase, mockNetbiosName.getName());

        when(mockNetbiosName.getName()).thenReturn(mixedCase);
        assertEquals(mixedCase, mockNetbiosName.getName());
    }

    void testGetKey_KeyExists() throws LoginException {
        when(key1.getKeyType()).thenReturn(KEY_TYPE_1);
        when(key2.getKeyType()).thenReturn(KEY_TYPE_2);
        Set<Object> privateCredentials = new HashSet<>();
        privateCredentials.add(key1);
        privateCredentials.add(key2);
        when(subject.getPrivateCredentials()).thenReturn(privateCredentials);

    void testGet() throws CIFSException {
        // Given
        String url = "smb://server/share/file";
        SmbResource mockResource = mock(SmbResource.class);
        when(mockContext.get(url)).thenReturn(mockResource);

        // When
        SmbResource resource = mockContext.get(url);

        // Then
        assertEquals(mockResource, resource);
        verify(mockContext).get(url);
    }

    @Test

     */
    @Test
    void testIsConnected() {
        when(smbTreeHandle.isConnected()).thenReturn(true);
        assertTrue(smbTreeHandle.isConnected(), "isConnected() should return true");
        when(smbTreeHandle.isConnected()).thenReturn(false);
        assertFalse(smbTreeHandle.isConnected(), "isConnected() should return false after status change");
    }

    /**

        // Arrange common constructor collaborators to avoid touching network/state
        when(handle.getPipe()).thenReturn(pipe);
        when(tree.isSMB2()).thenReturn(true);
        when(tree.getSendBufferSize()).thenReturn(4096);
        // Act
        return new SmbPipeOutputStream(handle, tree);
    }

    @ParameterizedTest
    @ValueSource(booleans = { true, false })

        // Only set up parent mocks when they're actually needed for URL creation
        when(parent.getContext()).thenReturn(this.ctx);
        when(parent.getLocator()).thenReturn(parentLocator);
        // Make the parent appear as a workgroup to use the simpler URL code-path
        when(parentLocator.isWorkgroup()).thenReturn(true);
    }

    /** Simple implementation of FileEntry for controlled inputs in tests. */