build: enable simplecov to mensure specs coverage

.github/workflows/main.yml

@@ -8,13 +8,16 @@ on:
   pull_request:
 
 jobs:
-  build:
+  test:
     runs-on: ubuntu-latest
     name: Ruby ${{ matrix.ruby }}
     strategy:
       matrix:
         ruby:
           - '3.2.1'
+          - '3.1.0'
+          - '3.0.0'
+          - '2.7.0'
 
     steps:
     - uses: actions/checkout@v2
@@ -23,8 +26,10 @@ jobs:
       with:
         ruby-version: ${{ matrix.ruby }}
         bundler-cache: true
-    - name: Run the default task
+
+    - name: Run Specs
       run: bundle exec rake
+
     - name: Create Coverage Artifact
       uses: actions/upload-artifact@v2
       with:

Gemfile

@@ -9,12 +9,11 @@ gem 'rake', '~> 13.0'
 gem 'rspec', '~> 3.0'
 
 group :development do
-  gem "guard-rspec", "~> 4.7"
-  gem "rubocop", "~> 1.51"
-  gem "rubocop-rspec", "~> 2.22"
+  gem 'guard-rspec', '~> 4.7'
+  gem 'rubocop', '~> 1.51'
+  gem 'rubocop-rspec', '~> 2.22'
 end
 
 group :test do
-  gem "simplecov", "~> 0.22.0", require: false
+  gem 'simplecov', '~> 0.22.0', require: false
 end
-

spec/spec_helper.rb

@@ -2,8 +2,16 @@
 
 require 'u-menu'
 
+require 'simplecov'
 require 'securerandom'
 
+SimpleCov.start
+
+SimpleCov.at_exit do
+  puts 'Coverage done'
+  SimpleCov.result.format!
+end
+
 RSpec.configure do |config|
   # Enable flags like --only-failures and --next-failure
   config.example_status_persistence_file_path = '.rspec_status'