From 0ebc90ee6710a25ec5394571d09620b6aaf649b6 Mon Sep 17 00:00:00 2001
From: hyuraku <32809703+hyuraku@users.noreply.github.com>
Date: Thu, 1 Apr 2021 23:15:51 +0900
Subject: [PATCH] cache paralell tests log on ci

---
 .github/workflows/tests.yml       |  7 +++++++
 Library/Homebrew/dev-cmd/tests.rb | 11 +++++++++--
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 02753e2680..32a37785ad 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -201,6 +201,13 @@ jobs:
       - name: Install Bundler RubyGems
         run: brew install-bundler-gems
 
+      - name: Cache parallel tests log
+        uses: actions/cache@v1
+        with:
+          path: /tests/parallel_runtime_rspec.log
+          key: ${{ runner.os }}-parallel_runtime_rspec-${{ hashFiles('**/parallel_runtime_rspec.log') }}
+          restore-keys: ${{ runner.os }}-parallel_runtime_rspec.log
+
       - name: Run brew tests
         run: |
           # brew tests doesn't like world writable directories
diff --git a/Library/Homebrew/dev-cmd/tests.rb b/Library/Homebrew/dev-cmd/tests.rb
index 259f7a45c7..37a92cd54f 100644
--- a/Library/Homebrew/dev-cmd/tests.rb
+++ b/Library/Homebrew/dev-cmd/tests.rb
@@ -98,10 +98,17 @@ module Homebrew
         Dir.glob("test/**/*_spec.rb")
       end
 
+      parallel_rspec_log_path =if ENV["CI"]
+        "/tests/parallel_runtime_rspec.log"
+      else
+        "#{HOMEBREW_CACHE}/tests/parallel_runtime_rspec.log"
+      end
+
       parallel_args = if ENV["CI"]
-        %w[
+        %W[
           --combine-stderr
           --serialize-stdout
+          --runtime-log "#{parallel_rspec_log_path}"
         ]
       else
         %w[
@@ -120,7 +127,7 @@ module Homebrew
         --require spec_helper
         --format NoSeedProgressFormatter
         --format ParallelTests::RSpec::RuntimeLogger
-        --out #{HOMEBREW_CACHE}/tests/parallel_runtime_rspec.log
+        --out #{parallel_rspec_log_path}
       ]
 
       bundle_args << "--format" << "RSpec::Github::Formatter" if ENV["GITHUB_ACTIONS"]