Setup Windows CI

.github/workflows/ci.yml

@@ -51,3 +51,27 @@ jobs:
         run: rake
       - name: Install gem
         run: rake install
+
+  windows:
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby: [ '3.0', '2.7', '2.6', '2.5' ]
+    runs-on: windows-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+      - name: Update Rubygems
+        run: gem update --system
+      - name: Install bundler
+        run: gem install bundler -v '2.2.16'
+      - name: Install dependencies
+        run: bundle install
+      - name: Run test
+        run: rake
+      - name: Install gem
+        run: rake install