rails_helper or spec_helper snippet to trace the clock before and after each rspec example

rails_helper.rb

ENV["RAILS_ENV"] ||= 'test'
require 'spec_helper'
# ...
RSpec.configure do |config|
  # Can help you spot problems with system time, timezones and time travel,
  # especially if multiple specs interact with each other
  # Check this doc for the difference between ::now and ::current : 
  # http://api.rubyonrails.org/classes/ActiveSupport/Testing/TimeHelpers.html#method-i-travel_to
  config.around(:each) do |example|
    puts "Time.now: #{Time.now}"
    puts "Time.current: #{Time.current}"
    example.run
    puts "Time.now: #{Time.now}"
    puts "Time.current: #{Time.current}"
  end
end