From 6dcacb8d7fb531e6140edcb0fdb93f54c1c54f58 Mon Sep 17 00:00:00 2001
From: Nicolas Bouilleaud <nico@bou.io>
Date: Wed, 29 Apr 2020 00:10:36 +0200
Subject: [PATCH] WIP: Enable parallel_spec

wip:
* [ ] Update README

setup:

* bundle
* rake parallel:create (to setup test databases)

usage:
RAILS_ENV=test rake parallel:spec (without spring)
bin/parallel_rspec spec (with spring)

timing on my slow macbook:
> rake spec
Finished in 55.08 seconds (files took 6.85 seconds to load)
> RAILS_ENV=test rake parallel:spec
Took 47 seconds
---
 .rspec_parallel    | 2 ++
 Gemfile            | 2 ++
 Gemfile.lock       | 6 ++++++
 bin/parallel_rspec | 8 ++++++++
 bin/spring         | 4 ++--
 5 files changed, 20 insertions(+), 2 deletions(-)
 create mode 100644 .rspec_parallel
 create mode 100755 bin/parallel_rspec

diff --git a/.rspec_parallel b/.rspec_parallel
new file mode 100644
index 0000000000..aaff198a32
--- /dev/null
+++ b/.rspec_parallel
@@ -0,0 +1,2 @@
+--format progress
+--format ParallelTests::RSpec::RuntimeLogger --out tmp/parallel_runtime_rspec.log
diff --git a/Gemfile b/Gemfile
index 0eb0c3bdfd..31aa955081 100644
--- a/Gemfile
+++ b/Gemfile
@@ -83,6 +83,8 @@ group :development, :test do
   gem 'faker'
   gem 'rspec-rails'
   gem 'rspec_junit_formatter', require: false
+  gem 'parallel_tests'
+  gem 'spring-commands-parallel-tests'
   gem "dotenv-rails"
   gem "debase"
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index e4c088c61a..43cc998012 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -304,6 +304,8 @@ GEM
       mini_portile2 (~> 2.4.0)
     orm_adapter (0.5.0)
     parallel (1.19.1)
+    parallel_tests (2.32.0)
+      parallel
     parser (2.7.1.0)
       ast (~> 2.4.0)
     pg (1.2.3)
@@ -447,6 +449,8 @@ GEM
     shoulda-matchers (4.3.0)
       activesupport (>= 4.2.0)
     spring (2.1.0)
+    spring-commands-parallel-tests (1.0.1)
+      spring (>= 0.9.1)
     spring-commands-rspec (1.0.4)
       spring (>= 0.9.1)
     spring-watcher-listen (2.0.1)
@@ -545,6 +549,7 @@ DEPENDENCIES
   listen
   mailjet
   metamagic
+  parallel_tests
   pg
   premailer-rails
   puma
@@ -567,6 +572,7 @@ DEPENDENCIES
   sentry-raven
   shoulda-matchers
   spring
+  spring-commands-parallel-tests
   spring-commands-rspec
   spring-watcher-listen
   therubyracer
diff --git a/bin/parallel_rspec b/bin/parallel_rspec
new file mode 100755
index 0000000000..b12215a3ae
--- /dev/null
+++ b/bin/parallel_rspec
@@ -0,0 +1,8 @@
+#!/usr/bin/env ruby
+begin
+  load File.expand_path('spring', __dir__)
+rescue LoadError => e
+  raise unless e.message.include?('spring')
+end
+require 'bundler/setup'
+load Gem.bin_path('parallel_tests', 'parallel_rspec')
diff --git a/bin/spring b/bin/spring
index fb2ec2ebb4..d89ee495fa 100755
--- a/bin/spring
+++ b/bin/spring
@@ -1,6 +1,6 @@
 #!/usr/bin/env ruby
 
-# This file loads spring without using Bundler, in order to be fast.
+# This file loads Spring without using Bundler, in order to be fast.
 # It gets overwritten when you run the `spring binstub` command.
 
 unless defined?(Spring)
@@ -8,7 +8,7 @@ unless defined?(Spring)
   require 'bundler'
 
   lockfile = Bundler::LockfileParser.new(Bundler.default_lockfile.read)
-  spring = lockfile.specs.detect { |spec| spec.name == "spring" }
+  spring = lockfile.specs.detect { |spec| spec.name == 'spring' }
   if spring
     Gem.use_paths Gem.dir, Bundler.bundle_path.to_s, *Gem.path
     gem 'spring', spring.version