Sometimes you need a piece of code to do something different for specs than for features. If you don't have separate environments, you can't check your Rails.env.

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I managed to distinguish between specs and features by asking Capybara.

Note that this only works when you do not use Capybara in specs.

if defined?(Capybara) and Capybara.respond_to?(:current_driver)
  # you're in a Cucumber scenario
else
  # you're probably in a spec
end

You could omit the defined?(Capybara) condition, if you are sure that Capybara is always defined when that code is being called.