Expected behavior

I created lib/layoutManager.rb (not a script) but when I run rubocop it doesn't tell me it should be snake case.

Actual behavior

rubocop returns with "no offenses detected"

Steps to reproduce the problem

1. create file lib/layoutManager.rb
2. run rubocop lib/layoutManager.rb

RuboCop version

$ rubocop -V
0.58.2 (using Parser 2.5.1.2, running on ruby 2.3.3 x86_64-darwin16)