def test_should_save_things
    cont = Container.new
    cont.name = 'cat'
    t = Thing.new
    t.name = 'meow'
    cont.things << t
    cont.save
    
    cont1 = Container.find(cont.id)
    t1 = Thing.find(t.id)
    t1.name = 'woof'
    cont1.things = [t1]
    cont1.save
    assert_equal 'woof', cont1.things[0].name
  end