#!/usr/bin/env python3
import passgeny.bhash
import sys

TEST_STRING = b'hello world'

bh = passgeny.bhash.Bhash()

bh.from_bytes(TEST_STRING)

# Scan the string in reverse order (::-1) as bhash should use big endian arithmetics
for c in TEST_STRING[::-1]:
    hc = bh.modulo(256)
    if hc != c:
        raise Exception("Returned value is {}, expected {}".format(chr(hc), c))

# This should throw an exception as we consumned all the bits in bhash
try:
    bh.modulo(2)
except passgeny.bhash.BhashException as e:
    print("Properly received exception: {}".format(e))
else:
    raise Exception("Did not receive BhashException.")