Test the LdapUserCredentialDao .
Test authenticate with bad password.
authenticate
Test authenticate with bad uid.
Test authenticate with no password.
Test authenticate with concurrent logins.
Test authenticate with correct login.
Test regular expression to match any of the following characters: ([{\^$|)?*+.
Test that the uid does not contain any of the following character: ([{\^$|)?*+.
([{\^$|)?*+.