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8228 :: Newbie: Mock object for assert when field not exported

• protium (orginal) [2021-07-12T19:12:44+02:00] view original

  I'm a newbie in nim, and I'd like to make the following assertion work:

  import strformat, odbc
  
  template alias(newName: untyped, call: untyped) =
    template newName(): untyped = call
  
  proc create_T558B_line(row: SQLRow): string =
    alias(PERNR, row[0].intVal) #'Personnel Number'
    alias(SEQNR, row[1].intVal) #'Sequential number for payroll period'
    alias(PAYTY, row[2].intVal) #'Payroll type'
    alias(PAYID, row[3].intVal) #'Payroll Identifier'
    alias(PAYDT, row[4].intVal) #'Pay date for payroll result'
    alias(PERMO, row[5].intVal) #'Period Parameters'
    alias(PABRJ, row[6].intVal) #'Payroll Year'
    alias(PABRP, row[7].intVal) #'Payroll Period'
    alias(FPBEG, row[8].intVal) #'Start date of payroll period (FOR period)'
    alias(FPEND, row[9].intVal) #'End of payroll period (for-period)'
      #alias(OCRSN, row[10])      #'Reason for Off-Cycle Payroll' - Keep blank
      #alias(SEQNR_CD, row[11])   #'Sequence Number' - Keep blank
    
    &"{PERNR:>08}{SEQNR:>05}{PAYTY:1}{PAYID:1}{PAYDT:>08}{PERMO:2}{PABRJ:4}" &
        &"{PABRP:2}{FPBEG:>08}{FPEND:>08}"
  
  # Can't get assert working because I am unsure how to instantiate SQLData since kind is not exported
  # assert(create_T558B_line(SqlRow(@[SQLData(intVal: 3000011),
  #                                   SQLData(intVal: 1),
  #                                   SQLData(intVal: 0),
  #                                   SQLData(intVal: 0),
  #                                   SQLData(intVal: 20210623),
  #                                   SQLData(intVal: 94),
  #                                   SQLData(intVal: 2021),
  #                                   SQLData(intVal: 13),
  #                                   SQLData(intVal: 20210606),
  #                                   SQLData(intVal: 20210623)])) ==
  #         "03000011000010020210623942021132021060620210623", "Failed")
  Run

  But I get an error, because the kind field is not exported from odbc. What's the best way to handle this?

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• juancarlospaco (orginal) [2021-07-12T19:17:58+02:00] view original

  https://nim-lang.github.io/Nim/importutils.html#privateAccess%2Ctypedesc

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• protium (orginal) [2021-07-12T19:42:24+02:00] view original

  Could have done something incorrect, but I imported the library, added a call

  privateAccess(SQLData)
  Run

  before the assert and got the following back from the compiler

  
  D:\src\importutils.nim(23, 41) Warning: unknown magic 'PrivateAccess' might crash the compiler [UnknownMagic]
  D:\src\BuildPayrollYtds.nim(25, 16) template/generic instantiation of `privateAccess` from here
  D:\src\importutils.nim(23, 41) Warning: unknown magic 'PrivateAccess' might crash the compiler [UnknownMagic]
  D:\src\BuildPayrollYtds.nim(26, 44) Error: the field 'kind' is not accessible.
  Run

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• juancarlospaco (orginal) [2021-07-12T21:36:08+02:00] view original

  privateAccess do NOT take a Type as argument, must be a typedesc. :)

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• protium (orginal) [2021-07-12T23:18:58+02:00] view original

  I tried replacing with

  privateAccess(typeof(SQLData))
  Run

  And got the same thing?

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• juancarlospaco (orginal) [2021-07-12T23:59:38+02:00] view original

  SQLData.type

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• protium (orginal) [2021-07-13T00:14:57+02:00] view original

  I did try that too, still get the same error messages. Anything else I can try?

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• juancarlospaco (orginal) [2021-07-13T01:41:12+02:00] view original

  privateAccess works with Nim devel, with Nim stable the only way is to include the module instead of importing it, not ideal but should work too.

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