assert script (step5) need review

[ppKrauss]

After sucesseful instation and population, some errors at assert, need only better casting, etc.

 tservice(N2C) 
---------------
--More--ERROR:  COALESCE types text and integer cannot be matched
LINE 11: ...element(  name ret,   COALESCE( issn.cast(issn.n2c($1)),0) )
                                                                    ^
QUERY:  SELECT CASE
    -- need XML convertion WHEN cmd='info' AND $1 IS NOT NULL AND $1::text>'' THEN issn.info($1)
    -- ... WHEN cmd='info' THEN issn.info()
    WHEN cmd='isc-int' OR cmd='isc' THEN
      xmlelement(  name ret,  COALESCE( issn.isc($1)::text,'') )
    WHEN cmd='isn-int' OR cmd='isn' THEN
      xmlelement(  name ret,  COALESCE( issn.isn($1)::text,'') )
    WHEN cmd='n2c-int' THEN
      xmlelement(  name ret,   COALESCE( issn.n2c($1),0) )
    WHEN cmd='n2c' THEN
      xmlelement(  name ret,   COALESCE( issn.cast(issn.n2c($1)),0) )
    WHEN cmd='n2ns-int' OR cmd='n2ns' THEN (
      SELECT xmlelement(  name ret,  xmlagg( xmlelement(name issn,COALESCE(i,'')) )  )
      FROM  ( -- need check when null
        SELECT unnest( CASE WHEN cmd='n2ns-int' THEN issn.n2ns($1)::text[] ELSE issn.n2ns_formated($1) END )
      ) t(i)
     )
    ELSE (text '<_ERROR_/>')::xml
  END
CONTEXT:  PL/pgSQL function issn.xservice_jspack(integer,text,integer,text) line 7 at assignment
....
 OK: n2c(int).
(1 row)
DELETE 0
INSERT 0 9

----- api.assert_tests, complete suite -----

   categ   |                                                                 result                                                            
     
-----------+-----------------------------------------------------------------------------------------------------------------------------------
-----
 issn-n2ns | ASSERT FAILED (issn/67/n2c)                                                                                                       
    +
           | ASSERT IS_EQUAL FAILED.                                                                                                           
    +
           |                                                                                                                                   
    +
           | Have -> {"result": "0000-1155", "status": 200, "outFormat": "json"}                                                               
    +
           | Want -> {"status" : 200, "result" : "0000-1155"}                                                                                  
    +
           | 
 issn-n2ns | ASSERT FAILED (issn/int/1/n2ns)                                                                                                   
    +
           | ASSERT IS_EQUAL FAILED.                                                                                                           
    +
           |                                                                                                                                   
    +
           | Have -> {"result": [1, 2150400], "status": 200, "outFormat": "json"}                                                              
    +
           | Want -> {"status" : 200, "result" : [1,2150400]}                                                                                  
    +
           |