Add GitHub actions.

.github/workflows/test.yaml

@@ -0,0 +1,50 @@
+name: Test
+
+on: [push, pull_request]
+
+permissions:
+  contents: read
+
+env:
+  CONSOLE_OUTPUT: XTerm
+
+jobs:
+  test:
+    name: ${{matrix.ruby}} on ${{matrix.os}}
+    runs-on: ${{matrix.os}}-latest
+    continue-on-error: ${{matrix.experimental}}
+
+    strategy:
+      matrix:
+        os:
+          - ubuntu
+          - macos
+
+        ruby:
+          - "3.1"
+          - "3.2"
+          - "3.3"
+
+        experimental: [false]
+
+        include:
+          - os: ubuntu
+            ruby: truffleruby
+            experimental: true
+          - os: ubuntu
+            ruby: jruby
+            experimental: true
+          - os: ubuntu
+            ruby: head
+            experimental: true
+
+    steps:
+    - uses: actions/checkout@v4
+    - uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{matrix.ruby}}
+        bundler-cache: true
+
+    - name: Run tests
+      timeout-minutes: 10
+      run: bundle exec bake test

Gemfile

@@ -3,14 +3,18 @@ source 'https://rubygems.org'
 # Specify your gem's dependencies in utopia.gemspec
 gemspec
 
-group :development do
-	gem 'pry'
-	gem 'pry-coolline'
-
-	gem 'tty-prompt'
+group :maintenance, optional: true do
+  gem "bake-gem"
+  gem "bake-modernize"
 end
 
 group :test do
-	gem 'simplecov'
-	gem 'coveralls', require: false
+  gem "rspec", "~> 3.6"
+
+  gem 'simplecov'
+  gem 'coveralls', require: false
+
+  gem "bundler"
+  gem "rake"
+  gem "concurrent-ruby"
 end

rb-inotify.gemspec

@@ -20,9 +20,4 @@ Gem::Specification.new do |spec|
   spec.required_ruby_version = '>= 2.2'
 
   spec.add_dependency "ffi", "~> 1.0"
-
-  spec.add_development_dependency "rspec", "~> 3.6"
-  spec.add_development_dependency "bundler"
-  spec.add_development_dependency "rake"
-  spec.add_development_dependency "concurrent-ruby"
 end