1 files changed, 37 insertions, 0 deletions
diff --git a/spec/rubyspec/core/process/setsid_spec.rb b/spec/rubyspec/core/process/setsid_spec.rb
new file mode 100644
index 0000000000..abb75f8225
--- /dev/null
+++ b/spec/rubyspec/core/process/setsid_spec.rb
@@ -0,0 +1,37 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "Process.setsid" do
+  with_feature :fork do
+    it "establishes this process as a new session and process group leader" do
+      read, write = IO.pipe
+      read2, write2 = IO.pipe
+      pid = Process.fork {
+        begin
+          read.close
+          write2.close
+          pgid = Process.setsid
+          write << pgid
+          write.close
+          read2.gets
+        rescue Exception => e
+          write << e << e.backtrace
+        end
+        Process.exit!
+      }
+      write.close
+      read2.close
+      pgid_child = Integer(read.gets)
+      read.close
+      platform_is_not :aix do
+        # AIX does not allow Process.getsid(pid)
+        # if pid is in a different session.
+        pgid = Process.getsid(pid)
+        pgid_child.should == pgid
+      end
+      write2.close
+      Process.wait pid
+
+      pgid_child.should_not == Process.getsid
+    end
+  end
+end