} catch (Exception e) {
            fail("Should not throw exception with empty map: " + e.getMessage());
        }
    }

    // Test getValueFromMap private method via reflection
    public void test_getValueFromMap() throws Exception {
        Method method = Crawler.class.getDeclaredMethod("getValueFromMap", Map.class, String.class, String.class);
        method.setAccessible(true);