assertTrue(UniAddress.isDotQuadIP("999.999.999.999"));
        }

        @Test
        void shouldThrowExceptionForNullInput() {
            assertThrows(NullPointerException.class, () -> UniAddress.isDotQuadIP(null));
        }

        @Test
        void shouldThrowExceptionForEmptyInput() {
            assertThrows(StringIndexOutOfBoundsException.class, () -> UniAddress.isDotQuadIP(""));
        }
    }

    @Nested

     *
     * @param transport transport instance
     * @return corresponding channel or null
     */
    public ChannelInfo getChannelForTransport(SmbTransport transport) {
        return channels.values().stream().filter(c -> c.getTransport() == transport).findFirst().orElse(null);
    }

    /**
     * Remove a channel
     *
     * @param channel channel to remove
     */

     */
    public static String createBulkLine(final String index, final String type, final SuggestItem item) {
        if (item == null || item.getId() == null || item.getText() == null) {
            throw new SuggesterException("Invalid SuggestItem: item, id, or text is null");
        }

        final Map<String, Object> firstLineMap = new HashMap<>();
        final Map<String, Object> firstLineInnerMap = new HashMap<>();

      }

    private fun createInsecureSslSocketFactory(trustManager: TrustManager): SSLSocketFactory =
      Platform
        .get()
        .newSSLContext()
        .apply {
          init(null, arrayOf(trustManager), null)
        }.socketFactory

    private fun createInsecureHostnameVerifier(): HostnameVerifier = HostnameVerifier { _, _ -> true }
  }

        assertEquals(16, md5Hash.length);
    }

    @Test
    @DisplayName("Should handle null input gracefully")
    void testNullInputHandling() {
        // When/Then
        assertThrows(NullPointerException.class, () -> {
            MessageDigest md4 = Crypto.getMD4();
            md4.digest(null);
        });

        assertThrows(NullPointerException.class, () -> {

      return
    }

    assertThat(url, "Expected URL to parse successfully, but was null")
      .isNotNull()
    val effectivePort =
      when {
        url!!.port != defaultPort(url.scheme) -> Integer.toString(url.port)
        else -> ""
      }
    val effectiveQuery =
      when {
        url.encodedQuery != null -> "?" + url.encodedQuery
        else -> ""
      }
    val effectiveFragment =
      when {

   * that conversion is safe.
   *
   * <p>This method is intended to help with usages of type parameters that have {@linkplain
   * ParametricNullness parametric nullness}. If a type parameter instead ranges over only non-null
   * types (or if the type is a non-variable type, like {@code String}), then code should almost
   * never use this method, preferring instead to call {@code requireNonNull} so as to benefit from
   * its runtime check.
   *

        byte[] fileId = new byte[16];
        for (int i = 0; i < 16; i++) {
            fileId[i] = (byte) (i + 1);
        }

        testHandle = new HandleInfo("/test/file.txt", guid, fileId, HandleType.DURABLE_V2, 120000, null);
    }

    @Test
    public void testReconnectHandleSuccess() throws Exception {
        when(mockManager.getHandleForReconnect("/test/file.txt")).thenReturn(testHandle);

    }

    public void test_convert_nullUrl() {
        assertNull(duplicateHostHelper.convert(null));
    }

    public void test_convert_withNullList() {
        DuplicateHostHelper helper = new DuplicateHostHelper();
        helper.duplicateHostList = null;

        String url = "http://test.com";
        String result = helper.convert(url);

        assertNotNull(result);

    if (args == null) {
      args = NO_ARGS;
    }
    if (args.length == 0 && method.getName().equals("hashCode")) {
      return hashCode();
    }
    if (args.length == 1
        && method.getName().equals("equals")
        && method.getParameterTypes()[0] == Object.class) {
      Object arg = args[0];
      if (arg == null) {
        return false;
      }
      if (proxy == arg) {