# https://github.com/travisjeffery/timecop/blob/master/test/time_stack_item_test.rb#L278
  # 
  def test_freezing_a_time_with_zone_returns_proper_zones
    Time.zone = "Hawaii"
    t = ActiveSupport::TimeWithZone.new(Time.utc(2000, 1, 1), ActiveSupport::TimeZone['Tokyo'])
    Timecop.freeze(t) do
      local_now = Time.now
      assert_equal t, local_now
      assert_equal t.getlocal.zone, local_now.zone

      zoned_now = Time.zone.now
      assert_equal t, zoned_now
      assert_equal 'HST', zoned_now.zone
    end
  end

[26] pry(#<TestTimeStackItem>)> t.zone
=> "JST"
[27] pry(#<TestTimeStackItem>)> local_now.zone
=> " 04"
[28] pry(#<TestTimeStackItem>)> t.getlocal.zone
=> " 04"