def test_from_bytes(sign_key1: SignKey):
xbytes = sign_key1.as_bytes()
sign_key12 = SignKey.from_bytes(xbytes)
assert type(sign_key12) is SignKey
xbytes2 = sign_key12.as_bytes()
assert xbytes == xbytes2
def test_as_bytes(sign_key1: SignKey):
xbytes = sign_key1.as_bytes()
assert len(xbytes) > 0