Merge cf246bf into f6bacb8

tests/test_sign_cryptography.py

@@ -2,6 +2,9 @@
 import os
 import unittest
 
+from cryptography.hazmat.backends import default_backend
+from cryptography.hazmat.primitives import hashes
+
 from adb_shell.auth.keygen import keygen
 from adb_shell.auth.sign_cryptography import CryptographySigner
 
@@ -16,8 +19,13 @@ def setUp(self):
 
     def test_sign(self):
         """Test that the ``Sign`` method does not raise an exception."""
-        with self.assertRaises(ValueError):
-            self.signer.Sign(b'notadb')
+        # https://www.programcreek.com/python/example/107988/cryptography.hazmat.primitives.hashes.Hash
+        hash_ctx = hashes.Hash(hashes.SHA1(), default_backend())
+        hash_ctx.update(b'notadb')
+        data = hash_ctx.finalize()
+        self.assertEqual(data, b'(\x8b\x9e\x88|JY\xb5\x18\x13b_\xe0\xc4\xfb\xa5\x83\xbdx\xfc')
+
+        self.signer.Sign(data)
         self.assertTrue(True)
 
     def test_get_public_key(self):