Testing that a callback is triggered

answer_test.rb

require 'test_helper'

class AnswerTest < ActiveSupport::TestCase
  def setup
    Answer.before_save do
      instance_variable_set :@first_callback, true
    end
    
    @answer = Answer.create!
  end
  
  test "callbacks are cumulative" do
    Answer.before_save do
      instance_variable_set :@second_callback, true
    end
    
    @answer.save
    
    assert @answer.instance_variable_get(:@first_callback)
    assert @answer.instance_variable_get(:@second_callback)
  end

  test "toggle_accept! skip callbacks" do
    Answer.before_save do
      instance_variable_set :@callback_called, true
    end
    
    @answer.toggle_accept!
    refute @answer.instance_variable_get(:@callback_called)
  end
end