fix issue RailsApps#39 (and add tests)

app/models/user.rb

@@ -60,7 +60,7 @@ def update_stripe
   def cancel_subscription
     unless customer_id.nil?
       customer = Stripe::Customer.retrieve(customer_id)
-      unless customer.nil? or customer.deleted
+      unless customer.nil? or customer.respond_to?('deleted')
         if customer.subscription.status == 'active'
           customer.cancel_subscription
         end

features/step_definitions/user_steps.rb

@@ -133,6 +133,12 @@ def sign_in
   click_button "Update"
 end
 
+When /^I delete my account$/ do
+  click_link "Edit account"
+  click_link "Cancel my account"
+  page.driver.browser.switch_to.alert.accept
+end
+
 When /^I follow the subscribe for silver path$/ do
   visit '/users/sign_up/?plan=silver'
 end
@@ -205,6 +211,10 @@ def sign_in
   page.should have_content "You updated your account successfully."
 end
 
+Then /^I should see an account deleted message$/ do
+  page.should have_content "account was successfully cancelled"
+end
+
 Then /^I should see my name$/ do
   create_user
   page.should have_content @user[:name]

features/users/user_delete.feature

@@ -0,0 +1,30 @@
+Feature: Edit User
+  As a registered user of the website
+  I want to delete my user profile
+  so I can close my account
+
+    @javascript
+    Scenario: I sign in and delete my account
+      Given I am logged in
+      When I delete my account
+      Then I should see an account deleted message
+
+    @javascript
+    Scenario: I create a new subscription and delete my account
+      Given: I am on the home page
+      When I follow the subscribe for silver path
+      Then I should see "Silver Subscription Plan"
+      Given I fill in the following:
+        | Name                       | Testy ShortLived  |
+        | Email                      | short@testing.com |
+        | user_password              | secret_password   |
+        | user_password_confirmation | secret_password   |
+        | Credit Card Number         | 4242424242424242  |
+        | card_code                  | 111               |
+      Then I select "5 - May" as the "month"
+      And I select "2015" as the "year"
+      When I press "Sign up"
+      Then I should be on the "content silver" page
+      And I should see a successful sign up message
+      When I delete my account
+      Then I should see an account deleted message