LdapUser user4 = new LdapUser(testEnv, null);
        assertNull(user4.getName());
    }

    @Test
    public void test_getEnvironment() {
        // Test getEnvironment returns the correct environment
        Hashtable<String, String> env = ldapUser.getEnvironment();
        assertSame(testEnv, env);
        assertEquals("test.value", env.get("test.key"));

        // Test with empty environment