public void test_updateDocument_existingDocId() {
        final Map<String, Object> doc = new HashMap<>();
        doc.put("doc_id", "existing_id");
        doc.put("url", "http://example.com");

        indexUpdater.updateDocument(doc);

        assertEquals("existing_id", doc.get("doc_id"));
    }

    // Test addBoostValue
    public void test_addBoostValue() {

        Path existingDir = tempDir.resolve("existing");
        Files.createDirectory(existingDir);
        Files.createFile(existingDir.resolve("test.txt"));

        assertTrue(Files.exists(existingDir));
        themeHelper.closeQuietly(existingDir);
        // Directory should be deleted
        assertFalse(Files.exists(existingDir));
    }

        facetQueryView.addQuery("existing_pdf", "filetype:pdf");
        facetQueryView.addQuery("label1", "filetype:html");

        facetQueryView.init();

        Map<String, String> queryMap = facetQueryView.getQueryMap();

        // Should not duplicate existing pdf query
        assertEquals("filetype:pdf", queryMap.get("existing_pdf"));
        // Should add doc since it's not present