result);
    }

    // Test toString method with null fields
    public void test_toString_nullFields() {
        String result = facetInfo.toString();
        assertEquals("FacetInfo [field=null, query=null, size=null, minDocCount=null, sort=null, missing=null]", result);
    }

    // Test toString method with empty arrays
    public void test_toString_emptyArrays() {

        if (repository == null || repository.getBasedir() == null) {
            return session;
        }

        if (session != null) {
            LocalRepositoryManager lrm = session.getLocalRepositoryManager();
            if (lrm != null && lrm.getRepository().getBasedir().equals(new File(repository.getBasedir()))) {
                return session;

   * {@code get(null)}, {@code keySet().contains(null)} or {@code remove(null)}.
   */
  ALLOWS_NULL_KEY_QUERIES,
  ALLOWS_NULL_KEYS(ALLOWS_NULL_KEY_QUERIES),
  /**
   * The map does not throw {@code NullPointerException} on calls such as {@code
   * containsValue(null)}, {@code values().contains(null)} or {@code values().remove(null)}.
   */
  ALLOWS_NULL_VALUE_QUERIES,

    }

    public void test_changePassword_withBothNull() {
        // Test password change with both null
        testLdapManager.changePasswordResult = false;
        testFessConfig.ldapAdminSyncPassword = false;

        boolean result = ldapChain.changePassword(null, null);

        assertTrue(result);
        assertNull(testLdapManager.changePasswordUsername);

        UserInfoCQ cq = new UserInfoCQ();
        if (queryLambda != null) {
            queryLambda.callback(cq);
        }
        FilterAggregationBuilder builder = regFilterA(name, cq.getQuery());
        if (opLambda != null) {
            opLambda.callback(builder);
        }
        if (aggsLambda != null) {
            UserInfoCA ca = new UserInfoCA();
            aggsLambda.callback(ca);

            false, false, false, "keyword", 0, 0, null, null, false, null, null, null, null, null, false);
    protected final ColumnInfo _columnLabelTypeId = cci("labelTypeId", "labelTypeId", null, null, String.class, "labelTypeId", null, false,
            false, false, "keyword", 0, 0, null, null, false, null, null, null, null, null, false);

      entry.setValue(3);
      assertEquals(1, cache.size());
      assertEquals(3, cache.getIfPresent(1));
      checkValidState(cache);

      assertThrows(NullPointerException.class, () -> entry.setValue(null));
      checkValidState(cache);
    }
  }

  /* ---------------- Local utilities -------------- */

  /** Most of the tests in this class run against every one of these caches. */

                if (links != null && now > links.expiration) {
                    roots.remove(root);
                    links = null;
                }

                if (links == null) {
                    trans = getDc(domain, auth);
                    if (trans == null) {
                        return null;
                    }

    }

    /**
     * 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) {

            return null;
        }

        @Override
        public StringBuffer getRequestURL() {
            return null;
        }

        @Override
        public HttpSession getSession(boolean create) {
            return null;
        }

        @Override
        public HttpSession getSession() {
            return null;
        }

        @Override