test_gem_server.rb: Don't specify port number

* test/rubygems/test_gem_server.rb (process_based_port): use
  dynamically chosen port numberss to get rid of conflicts.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51100 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Thu Jul  2 12:26:11 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* test/rubygems/test_gem_server.rb (process_based_port): use
+	  dynamically chosen port numberss to get rid of conflicts.
+
 Thu Jul  2 11:58:59 2015  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* test/rubygems/test_gem_specification.rb: skip tests which the

test/rubygems/test_gem_server.rb

@@ -7,6 +7,10 @@ class Gem::Server
 end
 
 class TestGemServer < Gem::TestCase
+  def process_based_port
+    0
+  end
+
   def setup
     super