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ruby--ruby/spec/rubyspec/core/process/ppid_spec.rb
eregon 95e8c48dd3 Add in-tree mspec and ruby/spec
* For easier modifications of ruby/spec by MRI developers.
* .gitignore: track changes under spec.
* spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec.
  These files can therefore be updated like any other file in MRI.
  Instructions are provided in spec/README.
  [Feature #13156] [ruby-core:79246]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2017-05-07 12:04:49 +00:00

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Ruby

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