Attribute attrCN = new DefaultAttribute( atEMail, "test1", ( String ) null, "test2" );
entry.put( attrCN );
assertTrue( entry.remove( atEMail, ( String ) null ) );
assertTrue( entry.remove( atEMail, "test1", "test2" ) );
assertFalse( entry.containsAttribute( atEMail ) );
entry.add( atEMail, "test1", ( String ) null, "test2" );
assertTrue( entry.remove( atEMail, ( String ) null ) );
assertEquals( 2, entry.get( atEMail ).size() );
assertFalse( entry.contains( atEMail, ( String ) null ) );