purchase_product.feature

Feature: purchase product

    Scenario: purchase product
      Given seller has created a product
      When buyer purchases the product
      And buyer sends payment
      Then seller should receive money
      And the product shouldn't be listed

purchase_product_steps.rb

Given(/^(.*) has created a product$/) do |username|
  UserManager.change_user(username)
end

When(/^(.*) purchases the product$/) do |username|
  UserManager.change_user(username)
end

When(/^(.*) sends payment$/) do |username|
  UserManager.change_user(username)
end

Then(/^(.*) should receive money$/) do |username|
  UserManager.change_user(username)
end

Then(/^the product shouldn't be listed$/) do
end

user_manager.rb

class LoginPage
  def self.login_as(username)
    # fill in login fields and submit form here
    puts "Logged in as #{username}"
  end
end

class UserManager
  def self.change_user(username)
    return if @current_username == username
    @current_username = username
    LoginPage.login_as(username)
  end
end