[bundler/bundler] Parallelize test suite

https://github.com/bundler/bundler/commit/23007cb107

spec/bundler/bundler/source_spec.rb

@@ -57,7 +57,10 @@ RSpec.describe Bundler::Source do
           let(:locked_gem) { double(:locked_gem, :name => "nokogiri", :version => "< 1.5") }
 
           context "with color", :no_color_tty do
-            before { Bundler.ui = Bundler::UI::Shell.new }
+            before do
+              allow($stdout).to receive(:tty?).and_return(true)
+              Bundler.ui = Bundler::UI::Shell.new
+            end
 
             it "should return a string with the spec name and version and locked spec version" do
               expect(subject.version_message(spec)).to eq("nokogiri >= 1.6\e[32m (was < 1.5)\e[0m")
@@ -78,7 +81,10 @@ RSpec.describe Bundler::Source do
           let(:locked_gem) { double(:locked_gem, :name => "nokogiri", :version => "1.7.0") }
 
           context "with color", :no_color_tty do
-            before { Bundler.ui = Bundler::UI::Shell.new }
+            before do
+              allow($stdout).to receive(:tty?).and_return(true)
+              Bundler.ui = Bundler::UI::Shell.new
+            end
 
             it "should return a string with the locked spec version in yellow" do
               expect(subject.version_message(spec)).to eq("nokogiri 1.6.1\e[33m (was 1.7.0)\e[0m")
@@ -99,7 +105,10 @@ RSpec.describe Bundler::Source do
           let(:locked_gem) { double(:locked_gem, :name => "nokogiri", :version => "1.7.0") }
 
           context "with color", :no_color_tty do
-            before { Bundler.ui = Bundler::UI::Shell.new }
+            before do
+              allow($stdout).to receive(:tty?).and_return(true)
+              Bundler.ui = Bundler::UI::Shell.new
+            end
 
             it "should return a string with the locked spec version in green" do
               expect(subject.version_message(spec)).to eq("nokogiri 1.7.1\e[32m (was 1.7.0)\e[0m")

spec/bundler/runtime/load_spec.rb

@@ -58,7 +58,7 @@ RSpec.describe "Bundler.load" do
     end
 
     it "does not find a Gemfile above the testing directory" do
-      bundler_gemfile = tmp.join("../Gemfile")
+      bundler_gemfile = Pathname.new(__dir__).join("../../Gemfile")
       unless File.exist?(bundler_gemfile)
         FileUtils.touch(bundler_gemfile)
         @remove_bundler_gemfile = true

spec/bundler/support/path.rb

@@ -42,7 +42,14 @@ module Spec
     end
 
     def tmp(*path)
-      root.join("tmp", *path)
+      root.join("tmp", scope, *path)
+    end
+
+    def scope
+      test_number = ENV["TEST_ENV_NUMBER"]
+      return "" if test_number.nil?
+
+      test_number.empty? ? "1" : test_number
     end
 
     def home(*path)

spec/bundler/support/rubygems_ext.rb

@@ -8,6 +8,7 @@ module Spec
   module Rubygems
     DEV_DEPS = {
       "automatiek" => "~> 0.2.0",
+      "parallel_tests" => "~> 2.29",
       "rake" => "~> 12.0",
       "ronn" => "~> 0.7.3",
       "rspec" => "~> 3.8",