void testRoundTripFull() throws IOException {
        // Arrange – create a fully populated token
        ASN1ObjectIdentifier mech = new ASN1ObjectIdentifier("1.2.840.113554.1.2.2");
        byte[] tokenArray = new byte[] { 1, 2, 3 };
        byte[] mic = new byte[] { 9, 9, 9 };
        NegTokenTarg original = new NegTokenTarg(NegTokenTarg.ACCEPT_COMPLETED, mech, tokenArray, mic);

        // Act – serialise and parse back

        doc.put("title", "タイトル");
        doc.put("content", 123); // Non-string content
        doc.put("url", "http://example.com"); // Field not in langFields

        languageHelper.updateDocument(doc);

        assertEquals("ja", doc.get("lang"));
        assertEquals("タイトル", doc.get("title_ja"));
        assertEquals(123, doc.get("content_ja"));
        assertNull(doc.get("url_ja")); // url is not in langFields

        assertEquals(1, results.length);
        assertEquals("Test Content for testing", results[0]);

        results = relatedContentHelper.getRelatedContents("123");
        assertEquals(1, results.length);
        assertEquals("Number: 123", results[0]);

        results = relatedContentHelper.getRelatedContents("abc");
        assertEquals(0, results.length);
    }

    public void test_load_invalidRegex() {

        response.sid = 123;
        response.numEntries = 5;
        response.isEndOfSearch = true;
        response.eaErrorOffset = 0;
        response.lastNameOffset = 100;
        response.lastName = "file5.txt";

        String actual = response.toString();
        assertTrue(actual.startsWith("Trans2FindFirst2Response["));
        assertTrue(actual.contains("sid=123"));

          k2 ^= (long) toUnsignedInt(bb.get(14)) << 48; // fall through
        case 14:
          k2 ^= (long) toUnsignedInt(bb.get(13)) << 40; // fall through
        case 13:
          k2 ^= (long) toUnsignedInt(bb.get(12)) << 32; // fall through
        case 12:
          k2 ^= (long) toUnsignedInt(bb.get(11)) << 24; // fall through
        case 11:
          k2 ^= (long) toUnsignedInt(bb.get(10)) << 16; // fall through
        case 10:

        assertEquals("new_value1", crawlingInfoHelper.infoMap.get("key1"));
    }

    public void test_store_create() {
        final String sessionId = "test-session-123";

        // Mock CrawlingInfoService
        ComponentUtil.register(new CrawlingInfoService() {
            private CrawlingInfo storedInfo;
            private List<CrawlingInfoParam> storedParams;

        testDir = File.createTempFile("synonymtest", "_dir");
        testDir.delete();
        testDir.mkdirs();
        file1 = new File(testDir, "synonym.txt");
        FileUtil.writeBytes(file1.getAbsolutePath(), "abc=>123\nxyz,890".getBytes(Constants.UTF_8));
    }

    @Override
    public void tearDown() throws Exception {
        super.tearDown();
        FileUtils.deleteDirectory(testDir);
    }

    public void test_init() {

        // Test different sizes
        assertEquals("00", Hexdump.toHexString(0, 2));
        assertEquals("FF", Hexdump.toHexString(255, 2));
        assertEquals("1234", Hexdump.toHexString(0x1234, 4));
    }

    @Test
    @DisplayName("Should convert long to hex string with padding")
    void testLongToHexString() {
        // Test various long values

        SID unknownSid = new SID(rpcSid, SID.SID_TYPE_UNKNOWN, null, null, false);
        unknownSid.sub_authority_count = 1;
        unknownSid.sub_authority = new int[] { 123 };
        assertEquals("123", unknownSid.getAccountName());
    }

    /**
     * Test getting the SID type as text.
     */
    @Test
    void testGetTypeText() {
        rpc.sid_t rpcSid = new rpc.sid_t();

        ImmutableBiMap.copyOf(ImmutableMap.of("one", 1, "two", 2, "three", 3, "four", 4));
    Set<Integer> values = bimap.values();
    assertEquals(newHashSet(1, 2, 3, 4), values);
    assertThat(values).containsExactly(1, 2, 3, 4).inOrder();
  }

  public void testDoubleInverse() {
    ImmutableBiMap<String, Integer> bimap =
        ImmutableBiMap.copyOf(ImmutableMap.of("one", 1, "two", 2));