Requiring 'rubocop-minitest' in config limits all cops to only run on the test/ directory

[tayjohno]

First off, thanks for starting a minitest-specific repo! I'm very excited to incorporate this into our Rubocop install. I've noticed that while the current gems are already useful, there's a configuration conflict that's preventing us from being able to use this in its current state.

Expected behavior

Adding the line

require:
  - rubocop-minitest
  ...

should not impact the configuration of existing cops.

Actual behavior

When adding the above line, rubocop ceases to run on any files outside of our /test/ directory. It appears that this configuration is overriding the default configuration for all rubocop gems.

Steps to reproduce the problem

See repo here for a simple reproduction of the issue.

https://github.com/tayjohno/sample-rubocop-minitest-issue

When commenting out the line to include rubocop-minitest, you'll see that the base rubocop gems run on 3 files (Gemfile, lib/sample.rb, and test/sample_test.rb).

$ [bundle exec] rubocop
Inspecting 3 files
.CC

Offenses:

lib/sample.rb:1:1: C: Style/FrozenStringLiteralComment: Missing magic comment # frozen_string_literal: true.
class Sample
^
test/sample_test.rb:1:1: C: Style/FrozenStringLiteralComment: Missing magic comment # frozen_string_literal: true.
class SampleTest < Minitest::Test
^
test/sample_test.rb:2:1: C: Layout/EmptyLinesAroundClassBody: Extra empty line detected at class body beginning.

3 files inspected, 3 offenses detected

But when you uncomment the line, even the base rubocop cops only runs on test/sample_test.rb.

$ [bundle exec] rubocop
Inspecting 1 file
C

Offenses:

test/sample_test.rb:1:1: C: Style/FrozenStringLiteralComment: Missing magic comment # frozen_string_literal: true.
class SampleTest < Minitest::Test
^
test/sample_test.rb:2:1: C: Layout/EmptyLinesAroundClassBody: Extra empty line detected at class body beginning.

1 file inspected, 2 offenses detected

RuboCop version

$ [bundle exec] rubocop -V
0.74.0 (using Parser 2.6.4.1, running on ruby 2.6.2 x86_64-darwin18)

[koic]

Thanks for your early feedback using RuboCop Minitest!
I opened a PR #14 and I will cut RuboCop Minitest 0.2.1 soon.

[koic]

RuboCop Minitest 0.2.1 has been released. Thanks again!