Merge branch 'bug/fix-duplicate-deploy-keys' into 'master'

Don't show duplicate deploy keys

This fixes the issue described in [#1516](https://gitlab.com/gitlab-org/gitlab-ce/issues/1516) where you would see the same deploy key multiple times if it was used by multiple projects.

See merge request !629

CHANGELOG

 Please view this file on the master branch, on stable branches it's out of date.
 
 v 7.11.0 (unreleased)
+  - Don't show duplicate deploy keys
   - Make the first branch pushed to an empty repository the default HEAD (Stan Hu)
   - Make Reply-To config apply to change e-mail confirmation and other Devise notifications (Stan Hu)
   - Add application setting to restrict user signups to e-mail domains (Stan Hu)

app/models/user.rb

@@ -438,7 +438,7 @@ class User < ActiveRecord::Base
   end
 
   def project_deploy_keys
-    DeployKey.in_projects(self.authorized_projects.pluck(:id))
+    DeployKey.unscoped.in_projects(self.authorized_projects.pluck(:id)).distinct(:id)
   end
 
   def accessible_deploy_keys

features/project/deploy_keys.feature

@@ -9,9 +9,10 @@ Feature: Project Deploy Keys
     Then I should see project deploy key
 
   Scenario: I should see project deploy keys
-    Given other project has deploy key
+    Given other projects have deploy keys
     When I visit project deploy keys page
-    Then I should see other project deploy key 
+    Then I should see other project deploy key
+    And I should only see the same deploy key once
 
   Scenario: I should see public deploy keys
     Given public deploy key exists
@@ -26,7 +27,7 @@ Feature: Project Deploy Keys
     And I should see newly created deploy key
 
   Scenario: I attach other project deploy key to project
-    Given other project has deploy key
+    Given other projects have deploy keys
     And I visit project deploy keys page
     When I click attach deploy key
     Then I should be on deploy keys page

features/steps/project/deploy_keys.rb

@@ -45,10 +45,20 @@ class Spinach::Features::ProjectDeployKeys < Spinach::FeatureSteps
     end
   end
 
-  step 'other project has deploy key' do
-    @second_project = create :project, namespace: create(:group)
+  step 'other projects have deploy keys' do
+    @second_project = create(:project, namespace: create(:group))
     @second_project.team << [current_user, :master]
     create(:deploy_keys_project, project: @second_project)
+
+    @third_project = create(:project, namespace: create(:group))
+    @third_project.team << [current_user, :master]
+    create(:deploy_keys_project, project: @third_project, deploy_key: @second_project.deploy_keys.first)
+  end
+
+  step 'I should only see the same deploy key once' do
+    within '.available-keys' do
+      page.should have_selector('ul li', count: 1)
+    end
   end
 
   step 'public deploy key exists' do