tests: add user events controller tests.

test/functional/user_sessions_controller_test.rb

@@ -0,0 +1,17 @@
+require 'test_helper'
+
+class UserSessionsControllerTest < ActionDispatch::IntegrationTest
+  context "The user sessions controller" do
+    context "index action" do
+      should "render for an admin" do
+        get_auth user_sessions_path, create(:admin_user)
+        assert_response :success
+      end
+
+      should "fail for a normal user" do
+        get_auth user_sessions_path, create(:user)
+        assert_response 403
+      end
+    end
+  end
+end