verify(smbFile, times(1)).length();

        // positive size -> accept
        reset(smbFile);
        when(smbFile.length()).thenReturn(42L);
        assertTrue(filter.accept(smbFile), "Positive size should be accepted");
        verify(smbFile, times(1)).length();
        verifyNoMoreInteractions(smbFile);
    }

    @Test

            // Accept files in /share/folder/ that are text files
            return path.equals("/share/folder/") && name != null && name.endsWith(".txt");
        };

        // Act & Assert: test with different file names
        assertTrue(filter.accept(mockDir, "document.txt"), "Should accept .txt files in the correct path");
        assertFalse(filter.accept(mockDir, "image.png"), "Should reject non-.txt files");

        assertEquals(name, request.getRemoteUser());
        verify(mockPrincipal, times(1)).getName();
    }

    @Test
    @DisplayName("constructor accepts null principal")
    void testConstructorWithNullPrincipal(@Mock HttpServletRequest mockRequest) {
        // Constructor accepts null principal without throwing exception
        NtlmHttpServletRequest request = new NtlmHttpServletRequest(mockRequest, null);

            // Act & Assert
            assertDoesNotThrow(() -> new MsrpcSamrConnect2(null, 0, ph));
        }

        @Test
        @DisplayName("should accept negative access mask values")
        void testNegativeAccessMaskAccepted() {
            // Arrange
            SamrPolicyHandle ph = createMockPolicyHandle();

            // Act & Assert

        // First call: reject, Second call: accept
        when(filter.accept(any(SmbResource.class))).thenReturn(false, true);

        NetServerFileEntryAdapterIterator itr = new NetServerFileEntryAdapterIterator(parent, delegate, filter);

        // Act
        assertTrue(itr.hasNext());
        SmbResource r = itr.next();

        // Assert: filter was invoked twice and we got the accepted one

        // Filter accepts names starting with "keep"
        when(filter.accept(any())).thenAnswer(inv -> {
            SmbResource res = inv.getArgument(0);
            return res.getName().startsWith("keep");
        });

        ShareEnumIterator it = new ShareEnumIterator(parent, entries.iterator(), filter);

        // Returns only accepted resources
        assertTrue(it.hasNext());

        md4.update(Strings.getUNIBytes(password));
        return md4.digest();
    }

    /**
     * Generates the NT password hash for the given password.
     * This version accepts char[] for better security.
     *
     * @param password the password to hash as char array
     * @return nt password hash
     */
    public static byte[] getNTHash(final char[] password) {

        @Test
        @DisplayName("Constructor accepts null challenge")
        void testConstructorAcceptsNullChallenge() {
            UniAddress dc = mock(UniAddress.class);

            NtlmChallenge nc = new NtlmChallenge(null, dc);

            assertNull(nc.challenge);
            assertSame(dc, nc.dc);
        }

        @Test
        @DisplayName("Constructor accepts null dc")
        void testConstructorAcceptsNullDc() {

        when(mockDelegate.next()).thenReturn(mockFileEntry1, mockFileEntry2, mockFileEntry3);

        // Create a mock filter that accepts file1 and file3 but not file2
        when(mockFilter.accept(mockResource1)).thenReturn(true);
        when(mockFilter.accept(mockResource2)).thenReturn(false);
        when(mockFilter.accept(mockResource3)).thenReturn(true);

 */
public class SmbFileFilterTest {

    /**
     * A minimal implementation that accepts every {@link SmbFile}.
     */
    private final SmbFileFilter ALWAYSACTIVE = new SmbFileFilter() {
        @Override
        public boolean accept(SmbFile file) throws SmbException {
            // Never inspect the file – simply accept.
            return true;
        }
    };

    /**