Modules::RequireFilenameMatchesPackage rule is not enforced

[dseynhae]

I want to make sure that my module or script name matches the file name. A typo is too easy to sneak in, and sometimes I actually use a template, and forget to update the package name.

PerlCritic quickly identifies those mistakes through the [Modules::RequireFilenameMatchesPackage] rule.

However, a couple of mistakes snuck in, and were never flagged!

This is because:

• PerlCritic will not enforce the rule if it thinks it is not dealing with a Module file
  • a Program file identified through --program-extensions
  • a Module streamed into STDIN
• A quick scan of perlcritic/server/src/Output.ts reveals that the Perl source file is not passed as a FILE argument, but as a string piped to STDIN; So PerlCritic has no information to enforce the rule!

This can quickly be verified with an experiment, take any Perl file, where the package name does not match the file name:

perlcritic <file>
perlcritic --program-extensions .pl <file>
cat file | perlcritic

The first check will flag the name mismatch.
The second and last check will not flag the problem!

The fix is to present perlcritic with a file, rather than a string:

• With the same name is the original file.
• With the same content as the current string.