Move project authorization to ee module and add spec

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/models/project_authorization.rb

 class ProjectAuthorization < ActiveRecord::Base
+  prepend ::EE::ProjectAuthorization
+
   belongs_to :user
   belongs_to :project
 
@@ -24,21 +26,4 @@ class ProjectAuthorization < ActiveRecord::Base
       EOF
     end
   end
-
-  def self.roles_stats
-    connection.execute <<-EOF.strip_heredoc
-      SELECT CASE max(access_level)
-      WHEN 10 THEN 'guest'
-      WHEN 20 THEN 'reporter'
-      WHEN 30 THEN 'developer'
-      WHEN 40 THEN 'master'
-      WHEN 50 THEN 'owner'
-      ELSE 'unknown' END
-      AS kind,
-        count(DISTINCT user_id) AS amount
-      FROM #{table_name}
-      GROUP BY access_level
-      ORDER BY amount DESC;
-    EOF
-  end
 end

ee/app/models/ee/project_authorization.rb

+module EE
+  module ProjectAuthorization
+    extend ActiveSupport::Concern
+
+    module ClassMethods
+      def roles_stats
+        connection.execute <<-EOF.strip_heredoc
+          SELECT CASE max(access_level)
+          WHEN 10 THEN 'guest'
+          WHEN 20 THEN 'reporter'
+          WHEN 30 THEN 'developer'
+          WHEN 40 THEN 'master'
+          WHEN 50 THEN 'owner'
+          ELSE 'unknown' END
+          AS kind,
+            count(DISTINCT user_id) AS amount
+          FROM #{table_name}
+          GROUP BY access_level
+          ORDER BY amount DESC;
+        EOF
+      end
+    end
+  end
+end

ee/app/views/admin/dashboard/_roles_stats.html.haml

@@ -5,7 +5,7 @@
       = @admin_count
 
 - if @roles_count
-  - @roles_count.reverse_each do |row|
+  - @roles_count.each do |row|
     %p
       Users with highest role
       %strong

spec/ee/spec/features/admin/admin_dashboard_spec.rb

+require 'spec_helper'
+
+describe "Admin Dashboard" do
+  before do
+    3.times do
+      project = create(:project)
+      user = create(:user)
+      project.add_reporter(user)
+    end
+
+    2.times do
+      project = create(:project)
+      user = create(:user)
+      project.add_developer(user)
+    end
+
+    # Add same user as Reporter and Developer to different projects
+    # and expect it to be counted once for the stats
+    user = create(:user)
+    project1 = Project.first
+    project2 = Project.last
+    project1.add_reporter(user)
+    project2.add_developer(user)
+
+    sign_in(create(:admin))
+  end
+
+  describe 'Roles stats' do
+    it 'show correct amount of users per role' do
+      visit admin_root_path
+
+      expect(page).to have_content('Admin users 1')
+      expect(page).to have_content('Users with highest role developer 3')
+      expect(page).to have_content('Users with highest role reporter 3')
+    end
+  end
+end