Setup Coveralls.io as Github Action

- Based on
https://github.com/marketplace/actions/coveralls-github-action#complete-parallel-job-example

.github/workflows/main.yml

@@ -9,7 +9,7 @@ on:
     types: [opened, synchronize, reopened]
 
 jobs:
-  base:
+  test:
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
@@ -30,6 +30,23 @@ jobs:
       - name: Run tests
         run: bundle exec rake
 
+      - name: Coveralls Parallel
+        uses: coverallsapp/github-action@master
+        with:
+          github-token: ${{ secrets.github_token }}
+          flag-name: ruby-${{ matrix.ruby }}
+          parallel: true
+
+  finish:
+    needs: test
+    runs-on: ubuntu-latest
+    steps:
+    - name: Coveralls Finished
+      uses: coverallsapp/github-action@master
+      with:
+        github-token: ${{ secrets.github_token }}
+        parallel-finished: true
+
   rubocop:
     runs-on: ubuntu-latest
     steps:

README.md

@@ -5,6 +5,7 @@ Originally was [omniauth-openid-connect](https://github.com/jjbohn/omniauth-open
 I've forked this repository and launch as separate gem because maintaining of original was dropped.
 
 [![Build Status](https://github.com/omniauth/omniauth_openid_connect/actions/workflows/main.yml/badge.svg)](https://github.com/omniauth/omniauth_openid_connect/actions/workflows/main.yml)
+[![Coverage Status](https://coveralls.io/repos/github/omniauth/omniauth_openid_connect/badge.svg)](https://coveralls.io/github/omniauth/omniauth_openid_connect)
 
 ## Installation
 

omniauth_openid_connect.gemspec

@@ -30,7 +30,6 @@ Gem::Specification.new do |spec|
   spec.add_dependency 'addressable', '~> 2.5'
   spec.add_dependency 'omniauth', '>= 1.9', '< 3'
   spec.add_dependency 'openid_connect', '~> 1.1'
-  spec.add_development_dependency 'coveralls', '~> 0.8'
   spec.add_development_dependency 'faker', '~> 2.0'
   spec.add_development_dependency 'guard', '~> 2.14'
   spec.add_development_dependency 'guard-bundler', '~> 2.2'
@@ -39,5 +38,6 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'mocha', '~> 1.7'
   spec.add_development_dependency 'rake', '~> 12.0'
   spec.add_development_dependency 'rubocop', '~> 1.12'
-  spec.add_development_dependency 'simplecov', '~> 0.12'
+  spec.add_development_dependency 'simplecov', '~> 0.21'
+  spec.add_development_dependency 'simplecov-lcov', '~> 0.8'
 end

test/test_helper.rb

@@ -1,18 +1,26 @@
 # frozen_string_literal: true
 
-lib = File.expand_path('../lib', __dir__)
-$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
-
 require 'simplecov'
-require 'coveralls'
 require 'minitest/autorun'
 require 'mocha/minitest'
 require 'faker'
 require 'active_support'
+
+SimpleCov.start do
+  if ENV['CI']
+    require 'simplecov-lcov'
+
+    SimpleCov::Formatter::LcovFormatter.config do |c|
+      c.report_with_single_file = true
+      c.single_report_path = 'coverage/lcov.info'
+    end
+
+    formatter SimpleCov::Formatter::LcovFormatter
+  end
+end
+
+lib = File.expand_path('../lib', __dir__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 require 'omniauth_openid_connect'
 require_relative 'strategy_test_case'
-
-SimpleCov.command_name 'test'
-SimpleCov.start
-Coveralls.wear!
 OmniAuth.config.test_mode = true