def test_iteration():
# xx, xy, xz, ya, yb
spg = SantaPasswordGenerator("xx")
assert "xy" == spg.iterate()
assert "xz" == spg.iterate()
assert "ya" == spg.iterate()
assert "yb" == spg.iterate()
spg = SantaPasswordGenerator("azz")
assert "baa" == spg.iterate()
from pswd import SantaPasswordGenerator, ElfPasswordCheck
spg = SantaPasswordGenerator("hepxcrrq")
while True:
pwd = spg.iterate()
if ElfPasswordCheck(pwd):
print pwd, "VALID"
break