@Test
    void testAuthenticationMechanism() {
        String mech = "MD5-DIGEST";
        factory.setAuthenticationMechanism(mech);
        assertEquals(mech, factory.getAuthenticationMechanism());
    }
This is the only test that does not fake the JNDI environment.  It is provided for 100% test coverage.

@throws NamingException thrown because the host is always broken.
core/src/test/java/org/apache/shiro/realm/ldap/JndiLdapContextFactoryTest.java