```ruby
require "simplecov"
SimpleCov.start

$LOAD_PATH.unshift File.expand_path("../../lib", __FILE__)
require "guideline"
```

Enable :focus option in rspec
user
```ruby
require "simplecov"
SimpleCov.start

$LOAD_PATH.unshift File.expand_path("../../lib", __FILE__)
require "guideline"

RSpec.configure do |config|
  config.treat_symbols_as_metadata_keys_with_true_values = true
  config.run_all_when_everything_filtered = true
  config.filter_run :focus
end
```
assistant