class Test

	def main is shared
		Test().run
		
	def run
		# assert List<of int>(.numbers) == [1, 2, 3]
		t = List<of int>(.numbers)
		assert t == [1, 2, 3]

	def numbers as IEnumerable<of int>
		#return [1, 2, 3] to passthrough
		for i in [1, 2, 3]
			yield i

	def numbers2 as IEnumerator<of int>
		for i in [1, 2, 3]
			yield i