use GA

.github/workflows/actions.yml

@@ -0,0 +1,23 @@
+name: CI
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    services:
+      mysql:
+        image: mysql
+    strategy:
+      matrix:
+        ruby: [ '2.5', '2.6', '2.7' ]
+    name: ${{ matrix.ruby }} rake ${{ matrix.task }}
+    steps:
+    - uses: actions/checkout@v2
+    - uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby }}
+        bundler-cache: true # runs 'bundle install' and caches installed gems automatically
+    - run: bundle exec rake

spec/cases/map_with_ar.rb

@@ -1,45 +1,43 @@
 require './spec/cases/helper'
 require "active_record"
 
-Tempfile.open("xxx") do |f|
-  database = "parallel_with_ar_test"
-  `mysql #{database} -e '' || mysql -e 'create database #{database}'`
+database = "parallel_with_ar_test"
+`mysql #{database} -e '' || mysql -e 'create database #{database}'`
 
-  ActiveRecord::Schema.verbose = false
-  ActiveRecord::Base.establish_connection(
-    :adapter => "mysql2",
-    :database => database
-  )
+ActiveRecord::Schema.verbose = false
+ActiveRecord::Base.establish_connection(
+  :adapter => "mysql2",
+  :database => database
+)
 
-  class User < ActiveRecord::Base
-  end
+class User < ActiveRecord::Base
+end
 
-  # create tables
-  unless User.table_exists?
-    ActiveRecord::Schema.define(:version => 1) do
-      create_table :users do |t|
-        t.string :name
-      end
+# create tables
+unless User.table_exists?
+  ActiveRecord::Schema.define(:version => 1) do
+    create_table :users do |t|
+      t.string :name
     end
   end
+end
 
-  User.delete_all
+User.delete_all
 
-  User.create!(:name => "X")
+User.create!(:name => "X")
 
-  Parallel.map(1..8) do |i|
-    User.create!(:name => i)
-  end
+Parallel.map(1..8) do |i|
+  User.create!(:name => i)
+end
 
-  puts "User.count: #{User.count}"
+puts "User.count: #{User.count}"
 
-  puts User.connection.reconnect!.inspect
+puts User.connection.reconnect!.inspect
 
-  Parallel.map(1..8, :in_threads => 4) do |i|
-    User.create!(:name => i)
-  end
+Parallel.map(1..8, :in_threads => 4) do |i|
+  User.create!(:name => i)
+end
 
-  User.create!(:name => "X")
+User.create!(:name => "X")
 
-  puts User.all.map(&:name).sort.join("-")
-end
+puts User.all.map(&:name).sort.join("-")

spec/parallel_spec.rb

@@ -189,7 +189,7 @@ def cpus
     end
 
     it "does not open unnecessary pipes" do
-      max = (RbConfig::CONFIG["target_os"].include?("darwin1") ? 10 : 1500) # somehow super bad on travis
+      max = (RbConfig::CONFIG["target_os"].include?("darwin1") ? 10 : 1800) # somehow super bad on CI
       `ruby spec/cases/count_open_pipes.rb`.to_i.should < max
     end
   end