Fix seed data, improve admin area testing

app/controllers/admin_controller.rb

@@ -3,6 +3,6 @@ class AdminController < ApplicationController
 
   def authenticate!
     authenticate_user!
-    raise SecurityError unless current_user.admin?
+    throw(:warden) unless current_user.admin?
   end
 end

db/seeds.rb

@@ -8,7 +8,7 @@
 
 Translation.delete_all
 Problem.delete_all
-Admin.delete_all
+User.delete_all
 
 
 for i in 1..20 do
@@ -17,27 +17,32 @@ end
 
 for i in 1..10 do
   translation = Translation.create!(
-             problem: Problem.find(i),
-             title: "Problem Nummer #{i}",
-             content: %Q(<p>Das hier ist der Inhalt von <b>Problem #{i}</b>.
-                  <br />Hier ist die zweite Zeile.</p>
-                  <p>Es können auch Formeln im Text (z.B. $1+2=3$) oder als eigene Zeile genutzt werden.</p>
-                  \\[ a^2 + b^2 = c^2 \\]
-                  )
+   problem: Problem.find(i),
+   title: "Problem Nummer #{i}",
+   content: %Q(<p>Das hier ist der Inhalt von <b>Problem #{i}</b>.
+<br />Hier ist die zweite Zeile.</p>
+<p>Es können auch Formeln im Text (z.B. $1+2=3$) oder als eigene Zeile genutzt werden.</p>
+\\[ a^2 + b^2 = c^2 \\])
   )
 
   problem = Problem.find(i)
   problem.set_translation(translation)
-  problem.save!
 end
 
 
-Admin.create!(
-         email: 'admin@example.com',
-         password: 'password',
-         password_confirmation: 'password'
+User.create!(
+  provider: :developer,
+  uid: "admin",
+  name: "admin",
+  role: 1
+)
+
+User.create!(
+  provider: :developer,
+  uid: "translator",
+  name: "translator"
 )
 
 p "Created #{Problem.count} problems"
 p "Created #{Translation.count} translations"
-p "Created #{Admin.count} admins"
+p "Created #{User.count} users"

test/controllers/admin/dashboard_controller_test.rb

@@ -4,21 +4,29 @@ class Admin::DashboardControllerTest < ActionDispatch::IntegrationTest
   include Devise::Test::IntegrationHelpers
 
   setup do
-    login_admin
+  end
+
+  test "should not get index if not admin" do
+    login_translator
+    get admin_dashboard_index_url
+    assert_redirected_to root_url
   end
 
   test "should get index" do
+    login_admin
     get admin_dashboard_index_url
     assert_response :success
   end
 
   test "should post new problem count" do
+    login_admin
     post admin_dashboard_update_problem_count_url(problem_count: 15)
     assert_redirected_to admin_dashboard_index_url
     assert_equal 15, Problem.count
   end
 
   test "should fail incorrect problem count" do
+    login_admin
     post admin_dashboard_update_problem_count_url(problem_count: 2)
     assert_redirected_to admin_dashboard_index_url
     assert_equal 3, Problem.count