Add admin acceptance test

app/controllers/admin_controller.rb

@@ -4,10 +4,10 @@ class AdminController < ApplicationController
     password: Rails.application.secrets.admin_password
   ) unless Rails.env.test?
 
-  layout "admin"
+  layout 'admin'
 
   before_action :set_repos
-  before_action :set_repo, :only => [:repo]
+  before_action :set_repo, only: [:repo]
 
   def toggle_admin
     session['admin'] = !session['admin']

test/acceptance/admin_test.rb

@@ -0,0 +1,10 @@
+require 'acceptance/test_helper'
+
+class AdminTest < AcceptanceTest
+  test 'Admin should be able to manually run suite for existing repo' do
+    repo = create(:repo)
+
+    visit admin_repo_path(repo.name)
+    page.must_have_content 'Run last'
+  end
+end