}

        @Test
        @DisplayName("Null parent with non-empty iterator causes NullPointerException during adapt")
        void nullParent_throwsNPE() {
            List<FileEntry> entries = Collections.singletonList(entry("x", SmbConstants.TYPE_SHARE));
            assertThrows(NullPointerException.class, () -> new ShareEnumIterator(null, entries.iterator(), null));
        }

        super(domain != null ? domain : tc.getConfig().getDefaultDomain(),
                username != null ? username : tc.getConfig().getDefaultUsername() != null ? tc.getConfig().getDefaultUsername() : "GUEST",
                password != null ? password : tc.getConfig().getDefaultPassword() != null ? tc.getConfig().getDefaultPassword() : "",
                (AuthenticationType) null);
        this.context = tc;
    }

     *
     * @param session the {@link Session}, must not be {@code null}
     * @param installationToolchainsFile The {@link Source} pointing to the installation toolchains, must not be {@code null}
     * @param userToolchainsSource The {@link Source} pointing to the user toolchains, must not be {@code null}
     * @throws ToolchainsBuilderException if the project cannot be created

    assertNull("get(notPresent) should return null", get(k3()));
  }

  @MapFeature.Require(ALLOWS_NULL_KEY_QUERIES)
  public void testGet_nullNotContainedButAllowed() {
    assertNull("get(null) should return null", get(null));
  }

  @MapFeature.Require(absent = ALLOWS_NULL_KEY_QUERIES)
  public void testGet_nullNotContainedAndUnsupported() {
    try {
      assertNull("get(null) should return null or throw", get(null));

      cachingHashMap.remove(key);
      return null;
    }
  }

  @CanIgnoreReturnValue
  @Override
  public V put(K key, V value) {
    checkNotNull(key);
    checkNotNull(value);
    Timestamped<V> oldValue = cachingHashMap.put(key, new Timestamped<V>(value, ticker));
    if (oldValue == null) {
      return null;
    }

        final int prime = 31;
        int result = 1;
        result = prime * result + ((value1 == null) ? 0 : value1.hashCode());
        result = prime * result + ((value2 == null) ? 0 : value2.hashCode());
        result = prime * result + ((value3 == null) ? 0 : value3.hashCode());
        result = prime * result + ((value4 == null) ? 0 : value4.hashCode());
        return result;
    }

    @Override

     * Note: Current implementation throws NullPointerException for null strings.
     */
    @Test
    void testCheck_withNullStringAndZeroPointer() {
        // A zero pointer indicates a null string
        PacUnicodeString pacString = new PacUnicodeString((short) 0, (short) 0, 0);
        String testString = null;

        assertEquals("", documentHelper.getContent(null, responseData, "", dataMap));
        assertEquals("", documentHelper.getContent(null, responseData, " ", dataMap));
        assertEquals("", documentHelper.getContent(null, responseData, "  ", dataMap));
        assertEquals("", documentHelper.getContent(null, responseData, "\t", dataMap));
        assertEquals("", documentHelper.getContent(null, responseData, "\t\t", dataMap));

            if (this.root_directory != null) {
                _dst = _dst.deferred;
                this.root_directory.encode(_dst);

            }
            if (this.object_name != null) {
                _dst = _dst.deferred;
                this.object_name.encode(_dst);

            }
            if (this.security_quality_of_service != null) {
                _dst = _dst.deferred;

                treeResponse.service = "testService";
                treeResponse.shareIsInDfs = true;
            }
            return null;
        }).when(session).send(any(ServerMessageBlock.class), any(ServerMessageBlock.class));

        // Test tree connect
        tree.treeConnect(null, null);

        assertEquals(2, tree.connectionState);
        assertEquals(456, tree.tid);