From bd31345c87f8d19a98edb5977507bc8f76da1688 Mon Sep 17 00:00:00 2001
From: Go MAEDA <maeda@farend.jp>
Date: Tue, 6 Apr 2021 06:27:42 +0000
Subject: [PATCH] Allow parallel testing (#35030).

Patch by Go MAEDA.


git-svn-id: http://svn.redmine.org/redmine/trunk@20920 e93f8b46-1217-0410-a6f0-8f06a7374b81
---
 doc/RUNNING_TESTS   | 4 ++++
 test/test_helper.rb | 2 ++
 2 files changed, 6 insertions(+)

diff --git a/doc/RUNNING_TESTS b/doc/RUNNING_TESTS
index 35e271a34..fa4737e11 100644
--- a/doc/RUNNING_TESTS
+++ b/doc/RUNNING_TESTS
@@ -14,6 +14,10 @@ Apache perl module Redmine.pm and Capybara tests, see below).
 You can run `ruby test/unit/issue_test.rb` for running a single test case and
 `ruby test/unit/issue_test.rb -n test_create` for running a single test.
 
+You can run tests in parallel by setting the PARALLEL_WORKERS environment
+variable:
+`PARALLEL_WORKERS=8 rake test`
+
 Before running tests, you need to configure both development
 and test databases.
 
diff --git a/test/test_helper.rb b/test/test_helper.rb
index 10f4f6e35..95b877d44 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -53,6 +53,8 @@ class ActionView::TestCase
 end
 
 class ActiveSupport::TestCase
+  parallelize(workers: 1)
+
   include ActionDispatch::TestProcess
 
   self.use_transactional_tests = true