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.github/workflows/ci.yml

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+name: CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+      - master
+
+jobs:
+  test-on-macos:
+    name: Test on macOS
+    runs-on: macOS-latest
+    strategy:
+      matrix:
+        xcode: [11.4, 12.3]
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Select Xcode
+      run: |
+        xcodebuild -version
+        ls -nt /Applications/ | grep "Xcode*"
+        sudo xcode-select -switch /Applications/Xcode_${{ matrix.xcode }}.app
+        xcodebuild -version
+
+    - name: Install danger-js
+      run: brew install danger/tap/danger-js
+
+    - run: swift test
+
+    - run: swift run danger-swift ci --verbose
+      if: ${{ github.event_name == 'pull_request' }}
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  test-on-linux:
+    name: Test on Linux
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        swift: [5.2.4, 5.3.3]
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-node@v2
+
+    - name: Install danger-js
+      run: |
+        yarn global add danger
+        echo `yarn global bin` >> $GITHUB_PATH
+
+    - uses: YOCKOW/Action-setup-swift@v1
+      with:
+        swift-version: ${{ matrix.swift }}
+
+    # - name: Install swiftenv
+    #   run: |
+    #     echo ${{ matrix.swift }} > .swift-version
+    #     eval "$(curl -sL https://swiftenv.fuller.li/install.sh)"
+    #     swift --version
+
+    - run: swift test
+
+    - run: swift run danger-swift ci --verbose
+      if: ${{ github.event_name == 'pull_request' }}
+      env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}