Add Github Action for CI

.github/workflows/ci.yml

@@ -0,0 +1,54 @@
+name: Ruby
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["main"]
+
+permissions:
+  contents: read
+
+jobs:
+  rubocop:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        ruby-version: ['3.0', '3.1']
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby-version }}
+        bundler-cache: true # runs 'bundle install' and caches installed gems automatically
+    - name: Run rubocop
+      run: bundle exec rubocop
+
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        gemfile: ['6.1_stable', '7.0_stable']
+        ruby-version: ['3.0', '3.1']
+    env:
+      BUNDLE_GEMFILE: ${{ github.workspace }}/gemfiles/${{ matrix.gemfile }}.gemfile
+      ACTIVERECORD_ENCRYPTION_PASSWORD: 'password'
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby-version }}
+        bundler-cache: true # runs 'bundle install' and caches installed gems automatically
+    - name: Shutdown Ubuntu MySQL (SUDO)
+      run: sudo service mysql stop # Shutdown the Default MySQL, "sudo" is necessary, please not remove it
+    - name: Set up MySQL
+      uses: mirromutth/mysql-action@v1.1
+      with:
+        mysql database: active_record_encryption
+        mysql user: 'root'
+        mysql password: 'password'
+    - name: Run tests
+      run: bundle exec rspec