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Why does cucumber with aruba not see the output of my program?
Then the stdout should contain "test"  # aruba-0.4.11/lib/aruba/cucumber.rb:82
  expected "" to include "test" (RSpec::Expectations::ExpectationNotMetError)
  features/test.feature:13:in `Then the output should contain "test"'

Scenario: echo test
  Given a blank slate
  When I run `echo "test"`
  The stdout should contain "test"

Scenario: puts test
  Given a blank slate
  When I start the program
  The stdout should contain "test"

When /^I start the program$/ do
  TestModule::Main.new.start
end

module TestModule
  class Main
    def initialize
    end
    def start
      $stdout.puts "test"
    end
  end
end

def initialize(output=$stdout)

When /^I start the program$/ do
    TestModule::Main.new(@output).start
end

Then the stdout should contain "(.+)" do |string|
    @output.should include string
end