Devise の confirmations_controller にて期間丁度に確認した場合、Mac, Linux での挙動が異なることの検証

confirmations_controller_test.rb

require 'test_helper'

class ConfirmationsControllerTest < ActionController::TestCase

  setup do
    @request.env['devise.mapping'] = Devise.mappings[:user]
  end

  test '登録して10日以内なら確認可' do
    user = create(:user)
    Time.stub(:now, user.confirmation_sent_at + 10.days) do
      get :show, confirmation_token: user.confirmation_token
    end
    assert user.reload.confirmed?
  end
end

devise_initializer.rb

# config/initializers/devise.rb
Devise.setup do |config|
  # some settings
  
  config.confirm_within = 10.days

  # some settings
end

users_factroy.rb

FactoryGirl.define do
  factory :user do
    email '[email protected]'
    password 'newSecurePassw0rd'
    confirmation_token 'xxxxxxxxxxxxxxxx'
    confirmation_sent_at Time.zone.now.yesterday
  end
end