class Test

	def main
		t = @[1, 2, 3]
		
		.takeICloneable(t)
		.takeICollection(t)
		.takeIEnumerable(t)
# TODO:		.takeIList(t)

		u = t.toList  # IEnumerable<of T>.toList extension method
		assert u[0] == 1 and u[1] == 2 and u[2] == 3
		assert t == u.toArray
		assert t.clone == t  # ICloneable.clone
# TODO:		assert t.count == 3  # IList<of T>.count
		
		# TODO?: MSDN says arrays implement ICollection<of T>, but the C# compiler does not like using an ICollection<of T> method:
		# assert t.contains(1)  # ICollection<of T>.clear

	def takeICloneable(x as ICloneable)
		pass
	
	def takeICollection(x as ICollection<of int>)
		pass

	def takeIEnumerable(x as IEnumerable<of int>)
		x.toList
	
	def takeIList(x as IList<of int>)
		pass