def test_serialization_to_simple_dict(self):
class CM(ComplexModel):
i = Integer
s = String
class CCM(ComplexModel):
c = CM
i = Integer
s = String
val = CCM(i=5, s='a', c=CM(i=7, s='b'))
d = FlatDictDocument.object_to_flat_dict(CCM, val)
assert d['i'] == 5
assert d['s'] == 'a'
assert d['c_i'] == 7
assert d['c_s'] == 'b'
assert len(d) == 4
