hum, it shouldn't give that uninitialized warning. I'd call that a bug. But you asked for the rest.

I wanted something like 'Failed test 'lxs command is missing.'.

That's not valid TAP, which is what Test::More and similar output. TAP is basically

1..5
...
ok 3
...
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1..5
...
not ok 3
...
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Most of the rest is optional, but it does allow to determine what the problem is, since you, the maintainer, is typically not the one that's going to be running the tests.

By the way, if you execute your test as follows, it'll hide pretty much all of the non-errors:

perl -MTest::Harness -e'runtests @ARGV' test.t
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