ldapChain.delete(user);

        assertEquals(user, testLdapManager.deletedUser);
        assertTrue(testLdapManager.deleteCalled);
    }

    public void test_delete_withNullUser() {
        // Test delete with null user
        ldapChain.delete(null);

        assertNull(testLdapManager.deletedUser);
        assertTrue(testLdapManager.deleteCalled);
    }