rubocop noise: introduced and resolved rails specific cop

http://rubocop.readthedocs.io/en/latest/cops/#rails

.rubocop.yml

@@ -54,3 +54,6 @@ Metrics/LineLength:
 Metrics/MethodLength:
   Exclude:
     - db/migrate/*
+
+Rails:
+  Enabled: true

app/models/candidate.rb

@@ -9,9 +9,9 @@ class Candidate < ApplicationRecord
 
   before_validation(:generate_test_hash, on: :create)
 
-  validates_presence_of :recruiter_id
-  validates_presence_of :name
-  validates_presence_of :experience
+  validates :recruiter_id, presence: true
+  validates :name, presence: true
+  validates :experience, presence: true
   validates :email, uniqueness: true, presence: true, email_format: true
   validates :test_hash, uniqueness: true, presence: true
 

app/models/user.rb

@@ -18,7 +18,7 @@ class User < ApplicationRecord
     def gen_reset_token
       loop do
         self[:reset_token] = SecureRandom.urlsafe_base64(10)
-        self[:reset_timestamp] = DateTime.now
+        self[:reset_timestamp] = DateTime.current
         break unless User.exists?(reset_token: self[:reset_token])
       end
     end

app/workers/quiz_status.rb

@@ -14,9 +14,7 @@ class QuizStatus
     candidate.submitted_answers.count == candidate.questions.count
   end
 
-  def completed
-    candidate.completed
-  end
+  delegate :completed, to: :candidate
 
   def can_submit
     on_summary &&

config/initializers/custom_error_wrapper.rb

@@ -2,5 +2,5 @@
 # TODO: needs better wrapping instead of nuking
 # https://rubyplus.com/articles/3401
 ActionView::Base.field_error_proc = proc do |html_tag, _instance|
-  html_tag.html_safe
+  html_tag
 end

test/workers/candidate_quiz_question_test.rb

@@ -8,7 +8,7 @@ class CandidateQuizQuestionTest < ActiveSupport::TestCase
              "input_options" => %w(one two three).to_yaml,
              "answer" => { test: 1, foo: 'bar', cheer: 'huzzah!' }.to_yaml,
              "saved" => false, "submitted" => true,
-             "updated_at" => DateTime.parse('20160816') }
+             "updated_at" => DateTime.parse('20160816').in_time_zone }
   end
 
   test "propper dot attributes work" do
@@ -22,7 +22,7 @@ class CandidateQuizQuestionTest < ActiveSupport::TestCase
     assert_equal 'text', question.input_type
     assert_equal false, question.saved
     assert_equal true, question.submitted
-    assert_equal DateTime.parse('20160816'), question.updated_at
+    assert_equal DateTime.parse('20160816').in_time_zone, question.updated_at
   end
 
   test 'should handle array of input options' do