Fixed Linting problems + added more tests

spec/features/promotion_spec.rb

 require 'spec_helper'
 
-describe 'Promotion', js: true do
+describe 'Promotions', js: true do
+  let(:admin) { create(:admin) }
   let(:user) { create(:user) }
+  let(:developer) { create(:user) }
   let(:project) { create(:empty_project, path: 'gitlab', name: 'sample') }
 
+  describe 'no promotion shown at all if you have a license', js: true do
+    sign_in(user)
+    project.team << [user, :master]
+    visit edit_project_path(project)
+    expect(page).not_to have_selector('#promote_service_desk')
+  end
+
+  describe 'for project features in general on premise', js: true do
+    before do
+      allow(License).to receive(:current).and_return(nil)
+
+      sign_in(user)
+      project.team << [user, :master]
+    end
+
+    it 'should have the contact admin line' do
+      expect(find('#promote_service_desk')).to have_content 'Contact your Administrator to upgrade your license.'
+    end
+    
+    it 'should have the start trial button' do
+      sign_in(admin)
+      visit edit_project_path(project)
+      expect(find('#promote_service_desk')).to have_content 'Start GitLab Enterprise Edition trial'
+    end
+  end
+
+  describe 'for project features in general for .com', js: true do
     before do
+      allow(Gitlab).to receive(:com?).and_return(true)
+    end
+
+    it 'should have the Upgrade your plan button' do
       sign_in(user)
       project.team << [user, :master]
+
+      expect(find('#promote_service_desk')).to have_content 'Upgrade your plan'
+    end
+
+    it 'should have the contact owner line' do
+      sign_in(developer)
+      project.team << [developer, :developer]
+
+      expect(find('#promote_service_desk')).to have_content 'Upgrade your plan'
+    end
   end  
 
   describe 'for service desk', js: true do
+    before do
+      sign_in(user)
+      project.team << [user, :master]
+    end
+
     it 'should appear in project edit page' do
       visit edit_project_path(project)
       expect(find('#promote_service_desk')).to have_content 'Improve customer support with GitLab Service Desk.'
+      expect(find('#promote_service_desk')).to have_content 'GitLab Service Desk is a simple way to allow people to create issues in your GitLab instance without needing their own user account.'
     end
 
     it 'does not show when cookie is set' do