doc.put("key4", expected4);
        assertEquals(expected4, DocumentUtil.getValue(doc, "key4", Date.class));
    }

    @Test
    public void test_long() {
        Map<String, Object> doc = new HashMap<>();

        long expected5 = 999999999999999999L;
        doc.put("key5", expected5);
        assertEquals(expected5, DocumentUtil.getValue(doc, "key5", Long.class).longValue());
    }

    @Test

    public void test_putAndGet() {
        dataStoreParams.put("key1", "value1");
        assertEquals("value1", dataStoreParams.get("key1"));

        dataStoreParams.put("key2", 123);
        assertEquals(123, dataStoreParams.get("key2"));

        dataStoreParams.put("key3", null);
        assertNull(dataStoreParams.get("key3"));
    }

    // Test get for non-existent key
    @Test
    public void test_getNonExistentKey() {

        StringBuilder buf = new StringBuilder();

        monitorTarget.append(buf, "key1", () -> "value1");
        buf.append(",");
        monitorTarget.append(buf, "key2", () -> 123);
        buf.append(",");
        monitorTarget.append(buf, "key3", () -> null);

        assertEquals("\"key1\":\"value1\",\"key2\":123,\"key3\":null", buf.toString());
    }

    // Test append with empty string
    @Test

        dataMap.put("key1", "value1");
        dataMap.put("key2", "");
        dataMap.put("key3", null);

        // Test with existing value
        String result1 = (String) method.invoke(crawler, dataMap, "key1", "default");
        assertEquals("value1", result1);

        // Test with empty value
        String result2 = (String) method.invoke(crawler, dataMap, "key2", "default");

        viewHelper.setUseSession(true);
        assertTrue(viewHelper.isUseSession());

        viewHelper.addInitFacetParam("key1", "value1");
        assertEquals("key1", viewHelper.getInitFacetParamMap().get("value1"));

        viewHelper.addInitGeoParam("key2", "value2");
        assertEquals("key2", viewHelper.getInitGeoParamMap().get("value2"));

        FacetQueryView facetQueryView = new FacetQueryView();

        assertFalse(result.isPresent());
    }

    @Test
    public void test_ofNullable_withMap() {
        Map<String, Object> testValue = new HashMap<>();
        testValue.put("key1", "value1");
        testValue.put("key2", 42);

        OptionalEntity<Map<String, Object>> result = OptionalUtil.ofNullable(testValue);

        assertNotNull(result);
        assertTrue(result.isPresent());

        sourceMap.put("key1", "value1");
        sourceMap.put("key2", 123);
        sourceMap.put("key3", true);
        event.setSourceMap(sourceMap);

        Map<String, Object> result = event.toSource();
        assertNotNull(result);
        assertEquals(3, result.size());
        assertEquals("value1", result.get("key1"));
        assertEquals(123, result.get("key2"));

        String key = virtualHostHelper.getVirtualHostKey();
        assertEquals("", key);

        // Matching host header
        request.addHeader("Host", "example.com");
        key = virtualHostHelper.getVirtualHostKey();
        assertEquals("", key); // Still empty due to caching

        // Test caching by calling again - should return cached value
        key = virtualHostHelper.getVirtualHostKey();

        // Test initial null map
        crawlingInfoHelper.putToInfoMap("key1", "value1");
        assertNotNull(crawlingInfoHelper.infoMap);

        // Test adding multiple entries
        crawlingInfoHelper.putToInfoMap("key2", "value2");
        crawlingInfoHelper.putToInfoMap("key3", "value3");

        assertEquals("value1", crawlingInfoHelper.infoMap.get("key1"));
        assertEquals("value2", crawlingInfoHelper.infoMap.get("key2"));

    /** Storage endpoint configuration key. */
    public static final String STORAGE_ENDPOINT = "storage.endpoint";

    /** Storage access key configuration key. */
    public static final String STORAGE_ACCESS_KEY = "storage.accesskey";

    /** Storage secret key configuration key. */
    public static final String STORAGE_SECRET_KEY = "storage.secretkey";