Merge branch 'unsubscribed_email' into 'master'

Unsubscribed email and doc update

Fixes #152

/cc @jacobvosmaer @job @sytse

See merge request !159

CHANGELOG-EE

 v 7.3.0
   - Add an option to change the LDAP sync time from default 1 hour
+  - User will receive an email when unsubscribed from admin notifications
 v 7.2.0
   - Improve Redmine integration

app/controllers/unsubscribes_controller.rb

@@ -10,7 +10,10 @@ class UnsubscribesController < ApplicationController
   def create
     @user = get_user
-    @user.admin_unsubscribe! if @user
+    if @user
+      @user.admin_unsubscribe!
+      Notify.send_unsubscribed_notification(@user).deliver
+    end
     redirect_to new_user_session_path, notice: 'You have been unsubscribed'
   end

app/mailers/emails/admin_notification.rb

@@ -6,5 +6,10 @@ module Emails
       @body = body
       mail to: email, subject: subject
     end
+
+    def send_unsubscribed_notification(user_id)
+      email = recipient(user_id)
+      mail to: email, subject: "Unsubscribed from GitLab administrator notifications"
+    end
   end
 end

app/views/notify/send_unsubscribed_notification.html.haml

+%p
+  You have been unsubscribed from receiving GitLab administrator notifications.

app/views/notify/send_unsubscribed_notification.text.haml

+You have been unsubscribed from receiving GitLab administrator notifications.

doc/tools/email.md

@@ -13,3 +13,10 @@ Here you can simply compose an email.
 Which will be sent to all users or users of a chosen group or project.
 ![recipients](email3.png)
+
+## Note
+User can choose to unsubscribe from receiving emails from GitLab by following the unsubscribe link from the email.
+Unsubscribing is unauthenticated in order to keep the simplicity of this feature.
+
+On unsubscribe, user will receive an email notifying that unsubscribe happened.
+Endpoint that provides unsubscribe option is protected by request being rate-limited.

features/admin/emails.feature

@@ -9,3 +9,9 @@ Feature: Admin email
     When I submit form with email notification info
     Then I should see a notification email is begin sent
     And admin emails are being sent
+
+  Scenario: Create a new email notification
+    Given I visit unsubscribe from admin notification page
+    When I click unsubscribe
+    Then I get redirected to the sign in path
+    And unsubscribed email is sent

features/steps/admin/email.rb

@@ -29,4 +29,23 @@ class Spinach::Features::AdminEmail < Spinach::FeatureSteps
     mail = ActionMailer::Base.deliveries.last
     expect(mail.text_part.body.decoded).to include @email_text
   end
-end
\ No newline at end of file
+
+  step 'I visit unsubscribe from admin notification page' do
+    @user = create(:user)
+    urlsafe_email = Base64.urlsafe_encode64(@user.email)
+    visit unsubscribe_path(urlsafe_email)
+  end
+
+  step 'I click unsubscribe' do
+    click_button 'Unsubscribe'
+  end
+
+  step 'I get redirected to the sign in path' do
+    current_path.should == root_path
+  end
+
+  step 'unsubscribed email is sent' do
+    mail = ActionMailer::Base.deliveries.last
+    expect(mail.text_part.body.decoded).to include "You have been unsubscribed from receiving GitLab administrator notifications."
+  end
+end