Looks like you achieved what you're planned to achieve and all is working.

You probably need to throw away your "drastic fix" and just place files in "t" directory and probably "test.pl" script as "perldoc ExtUtils::MakeMaker" says:

.....
  make test
    MakeMaker checks for the existence of a file named test.pl in the
    current directory and if it exists it execute the script with the 
+proper
    set of perl "-I" options.

    MakeMaker also checks for any files matching glob("t/*.t"). It wil
+l
    execute all matching files in alphabetical order via the Test::Har
+ness
    module with the "-I" switches set correctly.

    If you'd like to see the raw output of your tests, set the
    "TEST_VERBOSE" variable to true.

      make test TEST_VERBOSE=1

......
[download]

Those files in "t" directory should just use your module and check for corectness of output.

Also look at any CPAN module to see how they do this.

Courage, the Cowardly Dog