Add CircleCI configuration

.circleci/config.yml

@@ -0,0 +1,22 @@
+version: 2.1
+orbs:
+  ruby: circleci/[email protected]
+
+jobs:
+  build:
+    docker:
+      - image: circleci/ruby:2.5.0
+        environment:
+          TEST_COVERAGE: true
+
+    executor: ruby/default
+    steps:
+      - checkout
+      - ruby/bundle-install
+      - run:
+          name: Run tests
+          command: bundle exec rake
+
+      - store_artifacts:
+          path: coverage
+          destination: coverage

Gemfile

@@ -10,7 +10,6 @@ end
 
 group :test do
   gem 'minitest', '~> 5.14', require: 'minitest/autorun'
-  gem 'minitest-ci', '~> 3.4', require: false
   gem 'minitest-reporters', '~> 1.4'
   gem 'mocha', '~> 1.11', require: 'mocha/minitest'
   gem 'simplecov', '~> 0.19', require: false

Gemfile.lock

@@ -13,8 +13,6 @@ GEM
     hashdiff (1.0.1)
     method_source (1.0.0)
     minitest (5.14.2)
-    minitest-ci (3.4.0)
-      minitest (>= 5.0.6)
     minitest-reporters (1.4.2)
       ansi
       builder
@@ -45,7 +43,6 @@ PLATFORMS
 DEPENDENCIES
   dotenv (~> 2.7)
   minitest (~> 5.14)
-  minitest-ci (~> 3.4)
   minitest-reporters (~> 1.4)
   mocha (~> 1.11)
   pry-byebug

test/test_helper.rb

@@ -12,9 +12,4 @@
 
 Bundler.require(:test)
 
-if ENV['CI']
-  require 'minitest/ci'
-  Minitest::Ci.report_dir = 'test_results'
-end
-
 Minitest::Reporters.use! [Minitest::Reporters::DefaultReporter.new]