Merge pull request #455 from hggh/random_port_tests

use random port for tests

Author: yaauie

test/helper.rb

@@ -5,6 +5,8 @@
 require "logger"
 require "stringio"
 
+(class Random; def self.rand(*args) super end; end) unless defined?(Random)
+
 begin
   require "ruby-debug"
 rescue LoadError

test/internals_test.rb

@@ -375,8 +375,16 @@ def af_family_supported(af)
       begin
         s = Socket.new(af, Socket::SOCK_STREAM, 0)
         begin
-          sa = Socket.pack_sockaddr_in(9999, hosts[af])
-          s.bind(sa)
+          tries = 5
+          begin
+            sa = Socket.pack_sockaddr_in(1024 + Random.rand(63076), hosts[af])
+            s.bind(sa)
+          rescue Errno::EADDRINUSE => e
+            tries -= 1
+            retry if tries > 0
+
+            raise
+          end
           yield
         rescue Errno::EADDRNOTAVAIL
         ensure