class TestAllAny

	def main is shared
		# lists
		t = [1, 2, 3]
		assert all t
		assert any t
		t.add(0)
		assert not all t
		assert any t
		t = [0]
		assert not all t
		assert not any t
		t.clear
		assert all t
		assert not any t

		# sets
		s = {1, 2, 3}
		assert all s
		assert any s
		s.add(0)
		assert not all s
		assert any s
		s = {0}
		assert not all s
		assert not any s
		s.clear
		assert all s
		assert not any s

		# complex expressions
		assert all [1, 2]
		assert any [0, 1]
		assert all for x in [0, 1] get x + 1
		assert any for x in {0, 1} get x + 1

		# enumerable
		assert all .evens
		assert any .evens

	def evens as IEnumerable<of int> is shared
		yield 2
		yield 4
		yield 8