https://git.ruby-lang.org/ruby.git/commit/?id=5fac54a594

From 5fac54a594b475e7b7a07e925c0353e18c685f2b Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Thu, 6 Feb 2020 20:53:11 +0900
Subject: Fixed the output from separated test in parallel test

Redirect the output of separated child process to
`MiniTest::Unit.output`.

diff --git a/tool/lib/test/unit/core_assertions.rb b/tool/lib/test/unit/core_assertions.rb
index edaf839..836d712 100644
--- a/tool/lib/test/unit/core_assertions.rb
+++ b/tool/lib/test/unit/core_assertions.rb
@@ -110,9 +110,12 @@ module Test https://github.com/ruby/ruby/blob/trunk/tool/lib/test/unit/core_assertions.rb#L110
           file ||= loc.path
           line ||= loc.lineno
         end
+        capture_stdout = true
         if /mswin|mingw/ =~ RUBY_PLATFORM
           res_out = "STDOUT"
         else
+          capture_stdout = false
+          opt[:out] = MiniTest::Unit.output
           res_p, res_c = IO.pipe
           opt[res_c.fileno] = res_c.fileno
           res_out = "IO.new(#{res_c.fileno}, 'w')"
@@ -130,7 +133,7 @@ module Test https://github.com/ruby/ruby/blob/trunk/tool/lib/test/unit/core_assertions.rb#L133
 eom
         args = args.dup
         args.insert((Hash === args.first ? 1 : 0), "-w", "--disable=gems", *$:.map {|l| "-I#{l}"})
-        stdout, stderr, status = EnvUtil.invoke_ruby(args, src, true, true, **opt)
+        stdout, stderr, status = EnvUtil.invoke_ruby(args, src, capture_stdout, true, **opt)
         if res_c
           res_c.close
           res = res_p.read
-- 
cgit v0.10.2


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