setup and rubocop corrections

test/test_helpers/auth_test_helper.rb

@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+module AuthTestHelper
+  def user_token user
+    AuthenticateUser.new(email: user.email, password: 'password').perform
+  end
+
+  def auth_headers user, headers = {}
+    headers["HTTP_AUTHORIZATION"] = user_token(user)
+    headers
+  end
+end