assertEquals(origin, handler.getLastOrigin());
        }
    }

    // Test constructor
    public void test_constructor() {
        CorsFilter filter = new CorsFilter();
        assertNotNull(filter);
    }

    // Test OPTIONS constant
    public void test_optionsConstant() {
        assertEquals("OPTIONS", CorsFilter.OPTIONS);
    }

    // Helper classes for testing

            // Test that constructor is accessible when made accessible
            constructor.setAccessible(true);
            SystemUtil instance = constructor.newInstance();
            assertNotNull(instance);

        } catch (NoSuchMethodException | InstantiationException | IllegalAccessException | InvocationTargetException e) {
            fail("Should be able to access private constructor: " + e.getMessage());

                if (field.getType().equals(HtmlNext.class)) {
                    Object value = field.get(null);
                    assertNotNull("Field " + field.getName() + " should not be null", value);
                    assertTrue("Field " + field.getName() + " should be HtmlNext instance", value instanceof HtmlNext);
                }
            }
        }

            invalidConfig.get("some.property");
            fail("Should throw exception for non-existent property");
        } catch (ConfigPropertyNotFoundException e) {
            // Expected exception
            assertNotNull(e);
        }
    }

    // Test special characters in property values
    public void test_get_specialCharacters() {
        String testKey = "special.chars";

        User loadedUser = createTestUser("loadeduser", "Loaded User");
        chain.loadResult = loadedUser;

        User result = chain.load(inputUser);

        assertNotNull(result);
        assertEquals(loadedUser, result);
        assertEquals(1, chain.loadCalls.size());
        assertEquals(inputUser, chain.loadCalls.get(0));
    }

    // Test load with null user

            // Test that constructor is accessible when made accessible
            constructor.setAccessible(true);
            ThreadDumpUtil instance = constructor.newInstance();
            assertNotNull(instance);

        } catch (NoSuchMethodException | InstantiationException | IllegalAccessException | InvocationTargetException e) {
            fail("Should be able to access protected constructor: " + e.getMessage());

        manager.shutdown();
        
        PersistentHandleManager manager2 = new PersistentHandleManager(context);
        HandleInfo recovered = manager2.getHandleForReconnect("/test/file.txt");
        
        assertNotNull(recovered);
        assertEquals(HandleType.PERSISTENT, recovered.type);
        assertArrayEquals(fileId, recovered.fileId);
    }
}
```

### 8.2 Integration Tests
```java
@Test

            Artifact artifact = new Artifact("invalid-prefix-simple", "1.0.0");
            String result = themeHelper.getThemeName(artifact);
            // May not throw exception but return unexpected result
            assertNotNull(result);
        } catch (Exception e) {
            assertTrue(true); // Expected exception
        }
    }

    public void test_getJarFile_exists() throws IOException {
        // Create a mock jar file

        String template = "return object";
        Map<String, Object> paramMap = new HashMap<>();

        Object result = scriptEngine.evaluate(template, paramMap);
        assertNotNull(result);
        assertTrue(result instanceof TestUser);
        assertEquals("TestUser", ((TestUser) result).name);
    }

    // Test evaluate method with error handling

    WitnessRegistration registration = new WitnessRegistration(
        "\\\\server\\share", 
        InetAddress.getByName("192.168.1.100"),
        WitnessServiceType.FILE_SERVER_WITNESS
    );
    
    assertNotNull(registration.getRegistrationId());
    assertEquals(WitnessRegistrationState.REGISTERING, registration.getState());
    assertFalse(registration.isExpired(60000));
    
    // Test sequence numbers