Enable Process.setpriority for a single process on more platforms.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58961 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

spec/rubyspec/core/process/setpriority_spec.rb

@@ -1,8 +1,7 @@
 require File.expand_path('../../../spec_helper', __FILE__)
 
 describe "Process.setpriority" do
-  # Needs a valid version written for Linux
-  platform_is :darwin do
+  platform_is_not :windows do
     it "sets the scheduling priority for a specified process" do
       priority = Process.getpriority(Process::PRIO_PROCESS, 0)
       IO.popen('-') do |f|
@@ -19,31 +18,29 @@ describe "Process.setpriority" do
       end
       Process.getpriority(Process::PRIO_PROCESS, 0).should == priority
     end
-  end
 
-  # Darwin and FreeBSD don't seem to handle these at all, getting all out of
-  # whack with either permission errors or just the wrong value
-  platform_is_not :darwin, :freebsd, :windows do
-    it "sets the scheduling priority for a specified process group" do
-      priority = Process.getpriority(Process::PRIO_PGRP, 0)
-      IO.popen('-') do |f|
-        if f
-          pr = Integer(f.gets)
-          Integer(f.gets).should == 0
-          Integer(f.gets).should == (pr+1)
-        else
-          Process.setpgrp
-          pr = Process.getpriority(Process::PRIO_PGRP, 0)
-          p pr
-          p Process.setpriority(Process::PRIO_PGRP, 0, pr + 1)
-          p Process.getpriority(Process::PRIO_PGRP, 0)
+    # Darwin and FreeBSD don't seem to handle these at all, getting all out of
+    # whack with either permission errors or just the wrong value
+    platform_is_not :darwin, :freebsd do
+      it "sets the scheduling priority for a specified process group" do
+        priority = Process.getpriority(Process::PRIO_PGRP, 0)
+        IO.popen('-') do |f|
+          if f
+            pr = Integer(f.gets)
+            Integer(f.gets).should == 0
+            Integer(f.gets).should == (pr+1)
+          else
+            Process.setpgrp
+            pr = Process.getpriority(Process::PRIO_PGRP, 0)
+            p pr
+            p Process.setpriority(Process::PRIO_PGRP, 0, pr + 1)
+            p Process.getpriority(Process::PRIO_PGRP, 0)
+          end
         end
+        Process.getpriority(Process::PRIO_PGRP, 0).should == priority
       end
-      Process.getpriority(Process::PRIO_PGRP, 0).should == priority
     end
-  end
 
-  platform_is_not :windows do
     as_superuser do
       it "sets the scheduling priority for a specified user" do
         p = Process.getpriority(Process::PRIO_USER, 0)