Add GA to run tests on Ruby 3+ (#617)

.github/workflows/unit_tests.yaml

@@ -0,0 +1,42 @@
+name: Run tests GA
+
+on:
+  - push
+  - pull_request
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: hammer-cli-foreman
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby:
+          - 2.7
+          - 3.0
+          - 3.1
+    steps:
+      - name: Get hammer-cli
+        uses: actions/checkout@v2
+        with:
+          repository: theforeman/hammer-cli
+          ref: master
+          path: hammer-cli
+      - name: Get hammer-cli-foreman
+        uses: actions/checkout@v2
+        with:
+          path: hammer-cli-foreman
+      - name: Configure local gem dependencies
+        run: |
+          echo "gemspec path: '../hammer-cli', name: 'hammer_cli'" > Gemfile.local.rb
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
+          working-directory: hammer-cli-foreman
+      - name: Run tests
+        run: |
+          bundle exec rake test