just use STDOUT

1 files changed, 2 insertions, 4 deletions

diff --git a/tool/lib/test/unit/core_assertions.rb b/tool/lib/test/unit/core_assertions.rb
index 7ff986127f..8911fadae3 100644
--- a/tool/lib/test/unit/core_assertions.rb
+++ b/tool/lib/test/unit/core_assertions.rb
@@ -110,16 +110,14 @@ module Test
           file ||= loc.path
           line ||= loc.lineno
         end
-        if /mswin|mingw/ =~ RUBY_PLATFORM
-          res_fd = 1 # STDOUT
-        else
+        if /mswin|mingw/ !~ RUBY_PLATFORM
           res_p, res_c = IO.pipe
           opt[res_c.fileno] = res_c.fileno
           res_fd = res_c.fileno
         end
         src = <<eom
 # -*- coding: #{line += __LINE__; src.encoding}; -*-
-  require "test/unit";out=IO.new(#{res_fd});include Test::Unit::Assertions;require #{(__dir__ + "/core_assertions").dump};include Test::Unit::CoreAssertions
+  require "test/unit";out=#{res_fd ? "IO.new(#{res_fd})" : "STDOUT"};include Test::Unit::Assertions;require #{(__dir__ + "/core_assertions").dump};include Test::Unit::CoreAssertions
   END {
     out.puts [Marshal.dump($!)].pack('m'), "assertions=\#{self._assertions}"
   }