How to include a directory and your subdirectories with simplecov - ruby

Question

How can I add folder and subfolders of my libs to simplecov generate the coverage?
My SimpleCov Config
SimpleCov.start do
add_group 'Bot', 'app/bots'
add_group 'Bot', 'lib/bot'
add_group 'Controllers', 'app/controllers'
add_group 'Models', 'app/models'
add_group 'Helpers', 'app/helpers'
add_group 'Libraries', 'lib'
end
This is my lib tree
├── assets
├── bot
│   ├── base_bot_logic.rb
│   ├── bot_logic.rb
│   ├── core
│   │   ├── blacklist.rb
│   │   ├── bot_core.rb
│   │   ├── broadcast.rb
│   │   ├── emoji.rb
│   │   ├── profile.rb
│   │   ├── reply.rb
│   │   ├── setup.rb
│   │   ├── state_machine.rb
│   │   └── webview.rb
│   └── geoutils
│   └── geoutils.rb
├── estrutura.txt
├── solar
│   ├── api.rb
│   ├── assistido.rb
│   ├── atendimento.rb
│   └── validation
│   └── cpf.rb
├── solar.rb
└── tasks
7 directories, 18 files
But only two files are recognized by SimpleCov.
How I can add missing folders?
EDIT:
I add track_files '{app,lib}/**/*.rb' in my SimpleCov.start and it recognize mys files, but don't calculate the coverage rate.

Answer 1

Although I missed the party, I will answer
Getting started contains answer on your question:
If SimpleCov starts after your application code is already loaded (via
require), it won't be able to track your files and their coverage! The
SimpleCov.start must be issued before any of your application code is
required!
In this way, its correctly:
require 'simplecov'
require 'yourapp'
its NOT correctly:
require 'yourapp'
require 'simplecov'
track_files just includes files matched by this glob, whether or not they were explicitly required.