assertEquals( AliasDerefMode.DEREF_ALWAYS, searchRequest.getDerefAliases() );
assertEquals( 0, searchRequest.getSizeLimit() );
assertEquals( 0, searchRequest.getTimeLimit() );
assertEquals( false, searchRequest.getTypesOnly() );
ExprNode filter = searchRequest.getFilter();
assertTrue( filter instanceof PresenceNode );
assertEquals( "objectClass", ( ( PresenceNode ) filter ).getAttribute() );
// Check the encoding