admin controller tests, sans question

app/models/quiz.rb

@@ -1,4 +1,7 @@
 class Quiz < ApplicationRecord
   has_many :questions, -> { order(:sort) }
   has_many :candidates
+
+  validates_presence_of :dept
+  validates_presence_of :unit
 end

app/models/user.rb

@@ -1,4 +1,8 @@
 class User < ApplicationRecord
   has_secure_password
   has_many :candidates, foreign_key: "recruiter_id"
+
+  validates_presence_of :email
+  validates_presence_of :name
+  validates_presence_of :role
 end