ko1	2017-05-15 23:40:07 +0900 (Mon, 15 May 2017)

  New Revision: 58736

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=58736

  Log:
    refresh Gem at the end of `teardown`.
    
    * lib/rubygems/test_case.rb (teardown): call `Gem::refresh()` at the
      end of `teardown`.
      On parallel test sometimes fails test process. The reason
      is:
      (1) previous tests remains `Gem::Specification@@stubs` value
          which points to temporary directories and the directories
          are removed by `teardown` method of previous test.
      (2) `require 'rubygems/gem_runner'` in `test_gem_gem_runner.rb`
          tries to require test utility file. However, with strange `@@stubs`
          RubyGems tries to load specification from removed directory.
          `StubSpecification#to_spec` returns `nil` and error will occur.
      The solution this patch employs is to refresh all of parameters
      includes `Gem::Specification@@stubs` by `Gem::refresh()`.

  Modified files:
    trunk/lib/rubygems/test_case.rb
Index: lib/rubygems/test_case.rb
===================================================================
--- lib/rubygems/test_case.rb	(revision 58735)
+++ lib/rubygems/test_case.rb	(revision 58736)
@@ -410,6 +410,7 @@ class Gem::TestCase < MiniTest::Unit::Te https://github.com/ruby/ruby/blob/trunk/lib/rubygems/test_case.rb#L410
 
     Gem::Specification._clear_load_cache
     Gem::Specification.unresolved_deps.clear
+    Gem::refresh
   end
 
   def common_installer_setup

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