Merge pull request #151 from ruby/use-test-unit-ruby-core

Use test-unit-ruby-core from vendored code

.github/workflows/test.yml

@@ -3,11 +3,18 @@ name: ubuntu
 on: [push, pull_request]
 
 jobs:
+  ruby-versions:
+    uses: ruby/actions/.github/workflows/ruby_versions.yml@master
+    with:
+      engine: cruby
+      min_version: 2.7
+
   build:
+    needs: ruby-versions
     name: build (${{ matrix.ruby }} / ${{ matrix.os }})
     strategy:
       matrix:
-        ruby: [ head, '3.2', '3.1', '3.0', '2.7' ]
+        ruby: ${{ fromJson(needs.ruby-versions.outputs.versions) }}
         os: [ ubuntu-latest, macos-latest ]
         experimental: [false]
     runs-on: ${{ matrix.os }}
@@ -18,7 +25,7 @@ jobs:
       uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby }}
-    - name: Install dependencies
-      run: bundle install
+        bundler-cache: true
+        rubygems: latest
     - name: Run test
-      run: rake test
+      run: bundle exec rake test

Gemfile

@@ -7,3 +7,4 @@ gemspec
 gem "rake"
 gem "rdoc"
 gem "test-unit"
+gem "test-unit-ruby-core", git: "https://github.com/ruby/test-unit-ruby-core"