Update: stepped through the execution and found why it fails.
In require_ok 
 # Try to determine if we've been given a module name or file.
    # Module names must be barewords, files not.
    $module = qq['$module'] unless _is_module_name($module);

[download]
the problem is in _is_module_name
foo is being treated as a module because of this
    $module =~ s/\b::\b//g;

return $module =~ /^[a-zA-Z]\w*$/ ? 1 : 0;

[download]
with "foo.pl" it returns 0
with "foo" it returns 1
changing it to 
#    $module =~ s/\b::\b//g;

return $module =~ /^[a-zA-Z]\w*$/ ? 1 : 0 if $module =~ s/\b::\b//g;

[download]
resolves the problem and works for these tested scenarios 
require_ok("foo");
require_ok('foo');
require_ok("foo.pl");
require_ok('foo.pl');
require_ok("Net::FTP");
require_ok('Net::FTP');

[download]

In reply to Re^2: How do I test a script that doesn't have a .pl extension by ten8ciousb
in thread How do I test a script that doesn't have a .pl extension by ten8ciousb

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.