auto_update not working as described

[Khartir]

Description

According to the readme, the auto_update parameter should cause composer to be updated, when puppet is run.

You can also auto update composer by using the auto_update parameter. This will update Composer only when you will run Puppet.
However this does not work. All this does is add a cronjob to update composer, but there is no update during puppet run.

Steps to reproduce

class { '::composer':
  auto_update => true
}

Expected behavior

Composer is updated during puppet run.