In my rails engine simplecov does not (or rather will not) provide coverage for the lib directory.

I tried adding the root directory of the engine to the loadpath in spec_helper, and doing require "lib/myengine", which did not work.

HOWEVER If I simply rename lib to bob and change the corresponding require in the spec to require 'bob/myclass', the coverage DOES get created.

The issue seems to be purely with the name lib. 🐤

Adding a group with the lib path does not help the matter.