From 3c270b3a9a9b77db9bf511ce40891f4311584135 Mon Sep 17 00:00:00 2001
From: Mike McQuaid <mike@mikemcquaid.com>
Date: Wed, 9 Jan 2019 18:59:12 +0000
Subject: [PATCH] spec_helper: tweak parallel tests handling.

- only hide filtered runs in parallel (where they are super noisy)
- only send SimpleCov coverage once to Coveralls
---
 Library/Homebrew/test/spec_helper.rb | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/Library/Homebrew/test/spec_helper.rb b/Library/Homebrew/test/spec_helper.rb
index 802e2c4f22..79365e1997 100644
--- a/Library/Homebrew/test/spec_helper.rb
+++ b/Library/Homebrew/test/spec_helper.rb
@@ -11,6 +11,13 @@ if ENV["HOMEBREW_TESTS_COVERAGE"]
 
     formatters << Coveralls::SimpleCov::Formatter
 
+    if ENV["TEST_ENV_NUMBER"]
+      SimpleCov.at_exit do
+        result = SimpleCov.result
+        result.format! if ParallelTests.number_of_running_processes <= 1
+      end
+    end
+
     ENV["CI_NAME"] = ENV["HOMEBREW_CI_NAME"]
     ENV["CI_JOB_ID"] = ENV["TEST_ENV_NUMBER"] || "1"
     ENV["CI_BUILD_NUMBER"] = ENV["HOMEBREW_CI_BUILD_NUMBER"]
@@ -65,7 +72,7 @@ RSpec.configure do |config|
 
   config.filter_run_when_matching :focus
 
-  config.silence_filter_announcements = true
+  config.silence_filter_announcements = true if ENV["TEST_ENV_NUMBER"]
 
   # TODO: when https://github.com/rspec/rspec-expectations/pull/1056
   #       makes it into a stable release: