Merge pull request #123 from ruby/improve-ci

Improve CI

.github/workflows/test.yml

@@ -3,11 +3,18 @@ name: test
 on: [push, pull_request]
 
 jobs:
-  build:
+  ruby-versions:
+    uses: ruby/actions/.github/workflows/ruby_versions.yml@master
+    with:
+      engine: cruby
+      min_version: 2.4
+
+  test:
+    needs: ruby-versions
     name: build (${{ matrix.ruby }} / ${{ matrix.os }})
     strategy:
       matrix:
-        ruby: [ 3.2, 3.1, "3.0", 2.7, 2.6, 2.5, 2.4, head ]
+        ruby: ${{ fromJson(needs.ruby-versions.outputs.versions) }}
         os: [ ubuntu-latest, macos-latest ]
     runs-on: ${{ matrix.os }}
     steps:

Gemfile

@@ -4,3 +4,4 @@ gemspec
 
 gem "rake"
 gem "test-unit"
+gem "test-unit-ruby-core"

Rakefile

@@ -7,11 +7,4 @@ Rake::TestTask.new(:test) do |t|
   t.test_files = FileList["test/**/test_*.rb"]
 end
 
-task :sync_tool do
-  require 'fileutils'
-  FileUtils.cp "../ruby/tool/lib/core_assertions.rb", "./test/lib"
-  FileUtils.cp "../ruby/tool/lib/envutil.rb", "./test/lib"
-  FileUtils.cp "../ruby/tool/lib/find_executable.rb", "./test/lib"
-end
-
 task :default => :test