timestamps weirdness

unit_test.rb

#s/ActiveSupport::TestCase/Test::Unit::TestCase works

require 'test_helper'

class ThingTest < ActiveSupport::TestCase
  def test_thing
    ActiveRecord::Base.uncached do
      first = ActiveRecord::Base.connection.query("select now();")
      p [Time.now, first]
      sleep 3
      second = ActiveRecord::Base.connection.query("select now();")
      p [Time.now, second]
    end
  end
end

Output

Started
[2015-05-04 22:41:38 -0700, [["2015-05-05 05:41:38.080101+00"]]]
[2015-05-04 22:41:41 -0700, [["2015-05-05 05:41:38.080101+00"]]]