Documentation about 'test_files' is confusing

[emilsoman]

According to the section in the guides that talks about test_files gemspec attribute, test_files is a collection of unit test file which will be loaded as unit tests when the user requests a gem to be unit tested. How does the user request a gem to be unit tested ? Looks like --test option was removed from the gem command. So how is this test_files gemspec attribute useful currently ?

[drbrain]

I removed them since they're no longer useful or recommended to set. This will be updated with the next release of RubyGems.

[bf4]

Perl still runs tests by default when installing cpan modules.. for some reason that never took off in the rubygems world.