NAME

       Test::Data::Scalar -- test functions for scalar variables

SYNOPSIS

               use Test::Data qw(Scalar);

DESCRIPTION

       This modules provides a collection of test utilities for scalar variables.  Load the
       module through Test::Data.

   Functions
       blessed_ok( SCALAR )
           Ok if the SCALAR is a blessed reference.

       defined_ok( SCALAR )
           Ok if the SCALAR is defined.

       undef_ok( SCALAR )
           Ok if the SCALAR is undefined.

       dualvar_ok( SCALAR )
           Ok if the scalar is a dualvar.

           How do I test this?

           sub dualvar_ok ($;$)      {      my $ok   = Scalar::Util::dualvar( $_[0] );      my
           $name = $_[1] || 'Scalar is a dualvar';

                   $Test->ok( $ok, $name );

                   $Test->diag("Expected a dualvar, didn't get it\n")
                           unless $ok;
                   }

       greater_than( SCALAR, BOUND )
           Ok if the SCALAR is numerically greater than BOUND.

       length_ok( SCALAR, LENGTH )
           Ok if the length of SCALAR is LENGTH.

       less_than( SCALAR, BOUND )
           Ok if the SCALAR is numerically less than BOUND.

       maxlength_ok( SCALAR, LENGTH )
           Ok is the length of SCALAR is less than or equal to LENGTH.

       minlength_ok( SCALAR, LENGTH )
           Ok is the length of SCALAR is greater than or equal to LENGTH.

       number_ok( SCALAR )
           Ok if the SCALAR is a number ( or a string that represents a number ).

           At the moment, a number is just a string of digits.  This needs work.

       number_between_ok( SCALAR, LOWER, UPPER )
           Ok if the number in SCALAR sorts between the number in LOWER and the number in UPPER,
           numerically.

           If you put something that isn't a number into UPPER or LOWER, Perl will try to make it
           into a number and you may get unexpected results.

       string_between_ok( SCALAR, LOWER, UPPER )
           Ok if the string in SCALAR sorts between the string in LOWER and the string in UPPER,
           ASCII-betically.

       readonly_ok( SCALAR )
           Ok is the SCALAR is read-only.

       ref_ok( SCALAR )
           Ok if the SCALAR is a reference.

       ref_type_ok( REF1, REF2 )
           Ok if REF1 is the same reference type as REF2.

       strong_ok( SCALAR )
           Ok is the SCALAR is not a weak reference.

       tainted_ok( SCALAR )
           Ok is the SCALAR is tainted.

           (Tainted values may seem like a not-Ok thing, but remember, when you use taint
           checking, you want Perl to taint data, so you should have a test to make sure it
           happens.)

       untainted_ok( SCALAR )
           Ok if the SCALAR is not tainted.

       weak_ok( SCALAR )
           Ok if the SCALAR is a weak reference.

TO DO

       * add is_a_filehandle test

       * add is_vstring test

SEE ALSO

       Scalar::Util, Test::Data, Test::Data::Array, Test::Data::Function, Test::Data::Hash,
       Test::Builder

SOURCE AVAILABILITY

       This source is in Github:

               https://github.com/briandfoy/test-data

AUTHOR

       brian d foy, "<bdfoy@cpan.org>"

COPYRIGHT AND LICENSE

       Copyright (c) 2002-2012 brian d foy.  All rights reserved.

       This program is free software; you can redistribute it and/or modify it under the same
       terms as Perl itself.