Add GitHub Actions workflow for running tests

Author: kholdrex

.github/workflows/ruby.yml

@@ -0,0 +1,31 @@
+name: Ruby
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  test:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        ruby-version: [2.6, 2.7, 3.0, 3.1]
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby-version }}
+          bundler-cache: true # This will set up Bundler and cache the dependencies
+
+      - name: Run tests
+        run: bundle exec rspec

.gitignore

@@ -10,3 +10,4 @@
 # rspec failure tracking
 .rspec_status
 *.gem
+Gemfile.lock