1 files changed, 20 insertions, 23 deletions
diff --git a/spec/ruby/core/process/euid_spec.rb b/spec/ruby/core/process/euid_spec.rb
index bc3f52592e..da76f06e59 100644
--- a/spec/ruby/core/process/euid_spec.rb
+++ b/spec/ruby/core/process/euid_spec.rb
@@ -2,7 +2,7 @@ require_relative '../../spec_helper'
 
 describe "Process.euid" do
   it "returns the effective user ID for this process" do
-    Process.euid.should be_kind_of(Fixnum)
+    Process.euid.should.is_a?(Integer)
   end
 
   it "also goes by Process::UID.eid" do
@@ -18,40 +18,37 @@ describe "Process.euid=" do
 
   platform_is_not :windows do
     it "raises TypeError if not passed an Integer" do
-      lambda { Process.euid = Object.new }.should raise_error(TypeError)
+      -> { Process.euid = Object.new }.should.raise(TypeError)
+    end
+
+    it "sets the effective user id to its own uid if given the username corresponding to its own uid" do
+      raise unless Process.uid == Process.euid
+
+      require "etc"
+      user = Etc.getpwuid(Process.uid).name
+
+      Process.euid = user
+      Process.euid.should == Process.uid
     end
 
     as_user do
       it "raises Errno::ERPERM if run by a non superuser trying to set the superuser id" do
-        lambda { (Process.euid = 0)}.should raise_error(Errno::EPERM)
+        -> { Process.euid = 0 }.should.raise(Errno::EPERM)
       end
 
       it "raises Errno::ERPERM if run by a non superuser trying to set the superuser id from username" do
-        lambda { Process.euid = "root" }.should raise_error(Errno::EPERM)
+        -> { Process.euid = "root" }.should.raise(Errno::EPERM)
       end
     end
 
     as_superuser do
       describe "if run by a superuser" do
-        with_feature :fork do
-          it "sets the effective user id for the current process if run by a superuser" do
-            read, write = IO.pipe
-            pid = Process.fork do
-              begin
-                read.close
-                Process.euid = 1
-                write << Process.euid
-                write.close
-              rescue Exception => e
-                write << e << e.backtrace
-              end
-              Process.exit!
-            end
-            write.close
-            euid = read.gets
-            euid.should == "1"
-            Process.wait pid
-          end
+        it "sets the effective user id for the current process if run by a superuser" do
+          code = <<-RUBY
+            Process.euid = 1
+            puts Process.euid
+          RUBY
+          ruby_exe(code).should == "1\n"
         end
       end
     end