Merge pull request #19 from ruby/use-test-unit-ruby-core

Use https://github.com/ruby/test-unit-ruby-core

.github/workflows/test.yml

@@ -30,5 +30,6 @@ jobs:
       with:
         ruby-version: ${{ matrix.ruby }}
         bundler-cache: true # 'bundle install' and cache results
+        rubygems: latest
     - name: Run test
       run: bundle exec rake

Gemfile

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