Add CI setting

.github/workflows/CI.yml

@@ -0,0 +1,34 @@
+name: CI
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+permissions:
+  contents: read
+
+jobs:
+  test-linux:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+
+    strategy:
+      matrix:
+        ruby-version: ['3.0', '3.1', '3.2']
+
+    steps:
+    - name: Start Cassandra v4
+      run: |
+        docker run --name cassandra -d -p 9042:9042 cassandra:4
+    - uses: actions/checkout@v4
+    - 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: Prepare tests
+      run: bundle exec rake compile
+    - name: Run tests
+      run: bundle exec rake test