Adapt Greg's changes

Adds Mac and Ruby 2.3

.github/workflows/ruby.yml

@@ -10,29 +10,45 @@ on:
 
 jobs:
   test:
-    name: Test on ruby ${{ matrix.ruby_version }} and ${{ matrix.os }}
+    name: Ruby ${{ matrix.ruby_version }} and ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     strategy:
+      fail-fast: false
       matrix:
-        ruby_version: [2.4.x,2.5.x,2.6.x] # 2.2 is not currently offered, 2.3 not on windows
-        os: [ubuntu-latest] # MacOS is bugged r/n, see: https://github.com/actions/setup-ruby/issues/9, windows doesnt want to run bundle install for some reason
-
+        os: [ 'ubuntu-16.04', 'ubuntu-18.04', 'macos' ]
+        ruby: [ '2.3.x', '2.4.x', '2.5.x', '2.6.x' ]
+        exclude:
+          - os: ubuntu-16.04
+            ruby: 2.4.x
+          - os: ubuntu-16.04
+            ruby: 2.5.x
+          - os: ubuntu-16.04
+            ruby: 2.6.x
+          - os: ubuntu-18.04
+            ruby: 2.3.x
+          - os: macos
+            ruby: 2.3.x
     steps:
-    - uses: actions/checkout@master
-    - name: Set up Ruby
-      uses: actions/setup-ruby@master
+    - name: macOS install ragel
+      if: matrix.os == 'macos'
+      run: |
+        brew install ragel
+    - name: repo checkout
+      uses: actions/checkout@v1
+      with:
+        fetch-depth: 10
+    - name: load ruby
+      uses: actions/setup-ruby@v1
       with:
-        ruby-version: ${{ matrix.ruby_version }}
-    - name: Install dependencies
+        ruby-version: ${{ matrix.ruby }}
+    - name: bundle install
       run: |
-        gem install bundler
+        gem update --system --no-document --conservative
         bundle install --jobs 4 --retry 3
-    - name: Compiles extensions
-      run: |
-        bundle exec rake compile
-    - name: Build and test with Rake
+    - name: compile
+      run: bundle exec rake compile
+    - name: test
       env:
         CI: true
         TESTOPTS: -v
-      run: |
-        bundle exec rake
+      run: bundle exec rake