assertEquals(1, chain2.loadCallCount);
        assertEquals(user, chain1.lastLoadedUser);
        assertEquals(null, chain2.lastLoadedUser);
    }

    // Test addChain single
    public void test_addChain_single() {
        TestAuthenticationChain chain = new TestAuthenticationChain();
        authenticationManager.addChain(chain);

        // Verify chain was added by testing its effect