def test_iter1():
r = [1, 2]
a = Atom(5, r)
for i, o in enumerate(a):
assert o.R == r[i]
for i, o in enumerate(a.iter()):
assert o.R == r[i]
def test_iter2():
r = [1, 1, 2, 2]
a = Atom(5, r)
for i, o in enumerate(a.iter(True)):
assert len(o) == 2
