public void tearDown() throws Exception {
        ComponentUtil.setFessConfig(null);
        super.tearDown();
    }

    public void test_update() {
        // Test update method
        User user = createTestUser("testuser", "password123");

        ldapChain.update(user);

        assertEquals(user, testLdapManager.insertedUser);
        assertTrue(testLdapManager.insertCalled);
    }