"""
Unit tests for stem.client.datatype.KDF.
"""

import unittest

from stem.client.datatype import KDF

KEY_1 = b'\xec\xec.\xeb7R\xf2\n\xcb\xce\x97\xf4\x86\x82\x19#\x10\x0f\x08\xf0\xa2Z\xdeJ\x8f2\x8cc\xf6\xfa\x0e\t\x83f\xc5\xe2\xb3\x94\xa8\x13'
KEY_2 = b'\xe0v\xe4\xfaTB\x91\x1c\x81Gz\xa0\tI\xcb{\xc56\xcfV\xc2\xa0\x19\x9c\x98\x9a\x06\x0e\xc5\xfa\xb0z\x83\xa6\x10\xf6r"<b'


class TestKDF(unittest.TestCase):
  def test_parsing(self):
    k1 = KDF.from_value(KEY_1)
    self.assertEqual(b'\xca+\x81\x05\x14\x9d)o\xa6\x82\xe9B\xa8?\xf2\xaf\x85\x1b]6', k1.key_hash)
    self.assertEqual(b'\xac\xcc\xbc\x91\xb1\xaf\xd7\xe0\xe9\x9dF#\xd8\xdbz\xe8\xe6\xca\x83,', k1.forward_digest)
    self.assertEqual(b'*\xe5scX\xbb+\xca \xcb\xa4\xbc\xad\x0f\x95\x0cO\xcc\xac\xf1', k1.backward_digest)
    self.assertEqual(b'\xc3\xbe\xc9\xe1\xf4\x90f\xdai\xf3\xf3\xf5\x14\xb5\xb9\x03', k1.forward_key)
    self.assertEqual(b'U\xaf\x1e\x1b\xb1q||\x86A<_\xf7\xa0%\x86', k1.backward_key)

    k2 = KDF.from_value(KEY_1)
    self.assertEqual(b'\xca+\x81\x05\x14\x9d)o\xa6\x82\xe9B\xa8?\xf2\xaf\x85\x1b]6', k2.key_hash)
    self.assertEqual(b'\xac\xcc\xbc\x91\xb1\xaf\xd7\xe0\xe9\x9dF#\xd8\xdbz\xe8\xe6\xca\x83,', k2.forward_digest)
    self.assertEqual(b'*\xe5scX\xbb+\xca \xcb\xa4\xbc\xad\x0f\x95\x0cO\xcc\xac\xf1', k2.backward_digest)
    self.assertEqual(b'\xc3\xbe\xc9\xe1\xf4\x90f\xdai\xf3\xf3\xf5\x14\xb5\xb9\x03', k2.forward_key)
    self.assertEqual(b'U\xaf\x1e\x1b\xb1q||\x86A<_\xf7\xa0%\x86', k2.backward_key)