I wonder what you'd see through both invocation schemes with warn "<$INC{Test/Warn.pm}>\n"; before the pass() call. I suspect the library paths may be different than what you think, if you didn't use -Mblib or some other construct on the perl call.

If that doesn't help, look at what Test::Harness builds up for its arguments to Perl.

In reply to Re: Skipping tests if a module is not available by chromatic
in thread Skipping tests if a module is not available by Jeffrey Kegler

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