example_feature.rb

Feature: Who cares?
Scenario: valid user accounts can log in
When I have a valid user account
Then I can login

example_shared.rb

def create_valid_account
  User.create(:username => 'scott', :password => 'tiger')
end

def login_user user
    goto_page(:login_page) do | page|
        page.login_with user
    end
end

example_spec.rb

describe "Logging In" do
  context "with a valid user" do
     user = create_valid_user
     login_user user

     it "should log me in" do
       user.logged_in?.should be_true
     end
  end
end

example_steps.rb

When /^I have a valid user account$/ do
  @user = create_valid_account
end

Then /^I can login$/ do
    login_user @user
    @user.logged_in?.should be_true
end