@Test
    void testGetContextFactoryClassName() {
        assertEquals(JndiLdapContextFactory.DEFAULT_CONTEXT_FACTORY_CLASS_NAME, factory.getContextFactoryClassName());
    }
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