// Filter accepts only when name is exactly null, otherwise false
        SmbFilenameFilter filter = (dir, n) -> n == null;

        boolean result = filter.accept(mockDir, name);

        if (name == null) {
            assertTrue(result, "Null name should be accepted by this filter");
        } else {
            assertFalse(result, "Non-null names should be rejected by this filter");
        }

    }

    @Test
    @DisplayName("Constructor with all null parameters should work")
    void testConstructorWithAllNullParameters() {
        // Test that all null parameters are handled properly
        SmbNegotiation negotiationAllNull = new SmbNegotiation(null, null, null, null);

        assertNull(negotiationAllNull.getRequest());
        assertNull(negotiationAllNull.getResponse());

        assertEquals("first,null,third", result);
    }

    @Test
    @DisplayName("Should handle all null elements")
    void testJoinWithAllNullElements() {
        String result = StringUtil.join(",", null, null, null);
        assertEquals("null,null,null", result);
    }

    @Test
    @DisplayName("Should handle empty string elements")
    void testJoinWithEmptyStringElements() {

    }

    /**
     * Returns a {@link ByteBuffer} that maps the file channel to memory.
     *
     * @param channel
     *            The file channel. Must not be {@literal null}.
     * @param mode
     *            The mode. Must not be {@literal null}.
     * @return A {@link ByteBuffer} that maps the file channel to memory.
     */
    public static ByteBuffer map(final FileChannel channel, final MapMode mode) {

        SuggestItem item = new SuggestItem(text, readings, null, 0L, 0L, 0.5f, null, null, null, SuggestItem.Kind.QUERY);
        assertEquals(1.0f, item.getUserBoost(), 0.001f); // Should be set to 1

        // Test with boost greater than 1
        SuggestItem item2 = new SuggestItem(text, readings, null, 0L, 0L, 2.5f, null, null, null, SuggestItem.Kind.QUERY);

        synchronized (session.transport()) {
            if (response != null) {
                response.received = false;
            }
            treeConnect(request, response);
            if (request == null || response != null && response.received) {
                return;
            }
            if (!service.equals("A:")) {

     *
     * @param arrays
     *            the array
     * @return {@literal true} if the array is {@literal null} or has a length of 0
     */
    public static boolean isEmpty(final boolean[] arrays) {
        return arrays == null || arrays.length == 0;
    }

    /**
     * Returns {@literal true} if the array is not {@literal null} and its length is not 0.

        doThrow(new CIFSException("Context cannot be null")).when(sidResolver).resolveSids(eq(null), anyString(), any(SID[].class));

        assertThrows(CIFSException.class, () -> sidResolver.resolveSids(null, testServerName, testSids));
    }

    @Test
    void testResolveSids_WithNullServerName() throws CIFSException {
        doThrow(new CIFSException("Server name cannot be null")).when(sidResolver)

        NegTokenInit p4 = new NegTokenInit(tokenTag4);
        assertArrayEquals(mic, p4.getMechanismListMIC(), "MIC should be parsed from tag [4]");

        // Tag [3]
        byte[] tokenTag3 = buildInitToken(new ASN1ObjectIdentifier[] { OID_KRB }, null, null, mic, false, null, null, null);
        NegTokenInit p3 = new NegTokenInit(tokenTag3);

    /**
     * Builds the effective settings of the specified settings files.
     *
     * @param request the settings building request that holds the parameters, must not be {@code null}
     * @return the result of the settings building, never {@code null}
     * @throws SettingsBuilderException if the effective settings could not be built
     */
    @Nonnull
    SettingsBuilderResult build(@Nonnull SettingsBuilderRequest request);