test.pp

class collections::test {

  # Contains tests of the collections constructs

  # Define an iterator stack
  collections::create { 'foo':
  }

  # Add a thing for the stack to do:
  # collections::tap is a defined type that will create a notify resource containing its parameters
  collections::register_action { 'Test: Add a define':
    target   => 'foo',
    resource => 'collections::tap',
    wrapped  => true,
  }

  # Send four items through the stack
  # In this case, it will create a 'collections::tap' for each one
  [1, 2, 3, 4].each |$num| {
    collections::append { "Add item ${num} to foo":
      target => 'foo',
      item   => $num,
    }
  }
}