public void test_init_nonExistentDirectory() {
        ThumbnailManager manager = new ThumbnailManager() {
            @Override
            public void init() {
                baseDir = new File(tempDir, "nonexistent/dir");
                if (baseDir.mkdirs()) {
                    logger.info("Created: {}", baseDir.getAbsolutePath());
                }
                if (!baseDir.isDirectory()) {

            assertTrue("Field " + field + " should be found", queryFieldConfig.isSortField(field));
        }

        // Test negative cases
        assertFalse(queryFieldConfig.isSortField("nonexistent"));
        assertFalse(queryFieldConfig.isSortField("title"));
        assertFalse(queryFieldConfig.isSortField(""));
        assertFalse(queryFieldConfig.isSortField(null));
    }

    /**

        TestCorsHandler handler = new TestCorsHandler("example-handler");
        corsHandlerFactory.add(origin, handler);

        // Execute
        CorsHandler result = corsHandlerFactory.get("https://nonexistent.com");

        // Verify
        assertNull(result);
    }

    @Test
    public void test_add_overwriteExistingOrigin() {
        // Setup
        String origin = "https://example.com";

        HandleInfo info = manager.getHandleByPath("/test/file.txt");
        assertNotNull(info);
        assertEquals(guid, info.getCreateGuid());

        assertNull(manager.getHandleByPath("/nonexistent/file.txt"));
    }

    @Test
    public void testMultipleHandles() {
        HandleGuid guid1 = manager.requestDurableHandle("/test/file1.txt", HandleType.DURABLE_V2, 120000, null);

            @Override
            public String getSsoType() {
                return "none";
            }
        });
        final OsddHelper osddHelper = new OsddHelper();
        osddHelper.setOsddPath("osdd/nonexistent.xml");
        osddHelper.init();
        assertFalse(osddHelper.hasOpenSearchFile());

        try {
            osddHelper.asStream();
            fail("Should throw exception when osddFile is null");

    @Test
    public void test_provide_notFound() {
        // Test with various classification names that should not be found
        assertProvideThrowsException("TestClassification");
        assertProvideThrowsException("NonExistent");
        assertProvideThrowsException("");
        assertProvideThrowsException("Some.Classification");
        assertProvideThrowsException("Project.TestClassification");
    }

    @Test

        thread.start();
        thread.join(1000);

        assertTrue(thread.contains("exact line"));
        assertTrue(thread.contains("another line"));
        assertFalse(thread.contains("nonexistent"));
    }

    @Test
    public void test_contains_withTrimming() throws InterruptedException {
        String input = "  trimmed line  \n\tanother\t";

    }

    @Test
    void testInitIOExceptionHandling(@TempDir Path tempDir) {
        // Test handling IOException when loading jcifs.properties
        Path nonExistentPath = tempDir.resolve("nonexistent.properties");
        System.setProperty("jcifs.properties", nonExistentPath.toString());

        // Expect no exception to be thrown, but an error logged (which we can't directly assert here)

        assertEquals(1, intValues.length);
        assertEquals("123", intValues[0]);

        String[] nullValues = defaultContentsParser.getFieldValues(document, "non_existent");
        assertEquals(0, nullValues.length);
    }

    @Test
    public void test_parseSearchWords() throws Exception {
        String[] words = new String[] { "検索", "エンジン" };

    }

    @Test
    public void test_replaceUrl_withNonExistentSessionId() {
        final String url = "file:///home/user/";
        assertEquals(url, pathMappingHelper.replaceUrl("nonexistent", url));
    }

    @Test
    public void test_replaceUrl_withEmptyList() {
        final String sessionId = "test";
        final List<PathMapping> pathMappingList = new ArrayList<PathMapping>();