def test_infinite_recursion_equals():
a = GenericLabel(0, 15)
b = GenericLabel(0, 13)
a.b = b
b.a = a
a2 = GenericLabel(0, 15)
b2 = GenericLabel(0, 13)
a2.b = b2
b2.a = a2
assert a == a2
def test_list_ref_loop():
label = GenericLabel(0, 4, document=document)
with pytest.raises(ValueError):
label.a = [label]
