1 files changed, 23 insertions, 0 deletions
diff --git a/spec/ruby/core/process/ppid_spec.rb b/spec/ruby/core/process/ppid_spec.rb
new file mode 100644
index 0000000000..ec6ce865ee
--- /dev/null
+++ b/spec/ruby/core/process/ppid_spec.rb
@@ -0,0 +1,23 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "Process.ppid" do
+  with_feature :fork do
+    it "returns the process id of the parent of this process" do
+
+      read, write = IO.pipe
+
+      child_pid = Process.fork {
+        read.close
+        write << "#{Process.ppid}\n"
+        write.close
+        exit!
+      }
+
+      write.close
+      pid = read.gets
+      read.close
+      Process.wait(child_pid)
+      pid.to_i.should == Process.pid
+    end
+  end
+end