From c9a4c781465bd6612a437bda8cad2c754ae8a82c Mon Sep 17 00:00:00 2001
From: Tom Hughes <tom@compton.nu>
Date: Fri, 18 Dec 2020 22:39:23 +0000
Subject: [PATCH] Make coverage testing work with parallel tests

https://github.com/simplecov-ruby/simplecov/issues/718#issuecomment-538201587
---
 test/test_helper.rb | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/test/test_helper.rb b/test/test_helper.rb
index 41dac890a..a023dd610 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -43,6 +43,14 @@ module ActiveSupport
     # Run tests in parallel with specified workers
     parallelize(:workers => :number_of_processors)
 
+    parallelize_setup do |worker|
+      SimpleCov.command_name "#{SimpleCov.command_name}-#{worker}"
+    end
+
+    parallelize_teardown do
+      SimpleCov.result
+    end
+
     ##
     # takes a block which is executed in the context of a different
     # ActionController instance. this is used so that code can call methods
-- 
2.39.5