Question

My question may be stupid but I have a 2 days experience in MYSQL. I’m trying to use MyTAP for unit testing and face a problem .

here’s the SQL code exucted on a mysql console:

drop procedure  IF EXISTS tap.tstTableCount;
delimiter //

CREATE PROCEDURE tap.tstTableCount (IN db CHAR(64), IN tbl CHAR(64))
  BEGIN
    DECLARE l_sql VARCHAR (4000);
    SET l_sql=CONCAT('SELECT COUNT(*)>0 FROM ',db,'.',tbl,';');

    SET @sql=l_sql;
    PREPARE s1 FROM @sql;
    EXECUTE s1;
    DEALLOCATE PREPARE s1;

  END //

delimiter ;

call tap.tstTableCount('storibo','relationCategory'); /* This call works fine and returns 1 (true)*/

SELECT tap.ok( 
    tap.tstTableCount('storibo','relationCategory'), 
    'relationCategory contains data' 
); /* this one returns :
ERROR 1305 (42000): FUNCTION tap.tstTableCount does not exist */

is it an issue with the MyTAP fmk or do I make a mistake in my syntax ?

Answer 1

The problem is your tap.tstTableCount is a PROCEDURE and not a FUNCTION. All the MyTAP tests are are FUNCTIONS, as noted by being able to call it in a SELECT statement. You cannot call a PROCEDURE from a SELECT statement, instead needing to call it via:

CALL tap.tstTableCount();

Unfortunately, your example is one that cannot simply be converted to a FUNCTION to be used by the mytap functions. Dynamic SQL is not permitted in FUNCTION, but is allowed in PROCEDURE.