gistfile1.rb

When /^I fill in payment info that results in success$/ do
  When %{I fill in payment info with:
      | Card Number       | 1      |
      | Expiration        | 1/2012 |
      | Card Verification | 999    |
      | Zipcode           | 60120  |}
end

When /^I fill in payment info with:$/ do |table|
  within "fieldset.payment.info" do
    new_table = table.transpose
    new_table.hashes.first.each do |key, value|
      When %{I fill in "#{key}" with "#{value}"}
    end
  end
end