assertEquals(0, auth2.getPasswordAsCharArray().length);
    }

    /**
     * Test clone with secure password
     */
    @Test
    public void testCloneWithSecurePassword() {
        char[] testPassword = "ClonePass123!".toCharArray();
        NtlmPasswordAuthenticator original = new NtlmPasswordAuthenticator("DOMAIN", "testuser", testPassword);