Merge branch 'github-actions-for-ci' into going-crazy-with-ci

.github/workflows/ci.yml

@@ -0,0 +1,41 @@
+---
+name: ci
+on:
+  push:
+    branches:
+      - "*"
+  pull_request:
+    branches:
+      - "*"
+jobs:
+  test:
+    name: "Ruby {{ matrix.ruby }}"
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby:
+        - 2.3
+        - 2.4
+        - 2.5
+        - 2.6
+        - 2.7
+        experimental: [false]
+        include:
+          - ruby: "ruby-head"
+            experimental: true
+          - ruby: "truffleruby-head"
+            experimental: true
+    runs-on: ubuntu-latest
+    continue-on-error: ${{ matrix.experimental }}
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby }}
+        bundler-cache: true
+
+    - name: Run tests
+      run: bundle exec rspec