Mutant does not "see" all example groups

[plexus]

In the case of typecheck all tests should run for each mutation, i.e. the only scoping done in test group descriptions is the top level module. There's also heavy use of shared example groups.

Test code: https://github.com/plexus/typecheck/blob/master/spec/integration/typecheck_spec.rb#L75-L110

Some mutants are live that should have been killed by these shared example groups, e.g. this one https://gist.github.com/plexus/7db6e2d44176610a5e7e . It seems mutant is not "seeing" the tests in the shared example groups.

This is the output of rspec -fd : https://gist.github.com/f118f7b2583bc23b1386

To see this in action

git clone git@github.com:plexus/typecheck.git 
cd typecheck
bundle
MUTANT_OPTS=--fail-fast bundle exec rake mutant

[mbj]

@plexus Thx for the dense repro. Will look into this as soon as I have time for an OSS cycle!