use Perl

• What that is... (Score:1)

  by Alias (5735)

  That is a warning message generated by Test::MockObject (chromatic) about DateTime::Locale because when things fail weirdly, chromatic was sick of receiving bogus error reports and complaints about Test::MockObject when it was really the fault of the person using UNIVERSAL::can/isa as a function (which they shouldn't be).
  
  DateTime::Locale needs to call stuff as a method, not a function.
  • Re: (Score:2)

    by autarch (914)

    Err, take a look at that line:

    unless ( $real_class->can('new') )

    What exactly is wrong with that?
    • Re: (Score:1)

      by jrockway (7171)

      A shot in the dark, but is $real_class loaded when you make that call?
      
      Compare:
      
      $ foo->isa('UNIVERSAL') and print "yes\n"
      <nothing>
      
      to
      
      $ package foo;
      $ foo->isa('UNIVERSAL') and print "yes\n"
      yes
      
      I think U::can might get upset in this case... but who knows.
      
      Another possibility... didn't that line use can as a function in an older version of the module?  I can't get the warning to happen with the latest DateTime::Locale, but I could about a year ago.
      • Re: (Score:1)

        by jrockway (7171)

        Sorry, an addendum:
        
        $ use UNIVERSAL::can;
        $ UNIVERSAL->can('can') and print "can can\n";
        can can
        $ FOOBAR->can('can') or print "cannot can\n";
        Called UNIVERSAL::can() as a function, not a method at (eval 59) line 5
        cannot can
        $ package FOOBAR;
        $ FOOBAR->can('can') and print "now can can\n";
        now can can
        
        
        • Re: (Score:2)

          by autarch (914)

          Yep, that's the issue. In fact, the use of can is a way to check if the module has been loaded. It's quicker than blindly using require in every case, I think.
          • Re: (Score:1)

            by chromatic (983)

            That's the problem then. Your heuristic for testing if a class exists fights with my heuristic for testing if a class exists. I suppose U::i/U::c could skim through the optree for a method or method_named opcode, but that's a lot more work.
            • Re:What that is... (Score:2)

              by autarch (914) on 2007.11.01 15:03 (#58757) Homepage Journal

              Well, I think the problem is yours, since clearly I'm using UNIVERSAL::can as a method there, not a function, but your module is reporting that I'm using it as a function anyway.
              

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