Module: RSpec::Support::InSubProcess

Defined in:
lib/rspec/support/spec/in_sub_process.rb

Instance Method Summary collapse

Instance Method Details

#in_sub_process ⇒ Object

rubocop:disable MethodLength



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# File 'lib/rspec/support/spec/in_sub_process.rb', line 9

def in_sub_process(prevent_warnings=true)
  readme, writeme = IO.pipe

  pid = Process.fork do
    exception = nil
    warning_preventer = $stderr = RSpec::Support::StdErrSplitter.new($stderr)

    begin
      yield
      warning_preventer.verify_example!(self) if prevent_warnings
    rescue Exception => e
      exception = e
    end

    writeme.write Marshal.dump(exception)

    readme.close
    writeme.close
    exit! # prevent at_exit hooks from running (e.g. minitest)
  end

  writeme.close
  Process.waitpid(pid)

  exception = Marshal.load(readme.read)
  readme.close

  raise exception if exception
end