Merge pull request #9 from ruby/unify-ci

Unify OS environments for GitHub Actions

Author: hsbt

.github/workflows/macos.yml

@@ -0,0 +1,27 @@
+name: test
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    name: test (${{ matrix.ruby }} / ${{ matrix.os }})
+    strategy:
+      matrix:
+        ruby: [ '3.0', 2.7, 2.6, 2.5, 2.4, head ]
+        os: [ ubuntu-latest, macos-latest ]
+    runs-on: ${{ matrix.os }}
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install packages
+      if: ${{ matrix.os == 'ubuntu-latest' }}
+      run: |
+        sudo apt update -qy
+        sudo apt install libgdbm6 libgdbm-dev
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby }}
+    - name: Install dependencies
+      run: bundle install
+    - name: Run test
+      run: rake compile test