Fix binary/text error and update tests.

Author: vsajip

gnupg.py

@@ -1665,7 +1665,7 @@ def get_recipients_file(self, file, extra_args=None):
         if extra_args:
             args.extend(extra_args)
         result = self.result_map['crypt'](self)
-        self._handle_io(args, file, result, passphrase=None)
+        self._handle_io(args, file, result, binary=True)
         ids = []
         for m in PUBLIC_KEY_RE.finditer(result.stderr):
             ids.append(m.group(1))

test_gnupg.py

@@ -1240,7 +1240,7 @@ def test_no_such_key(self):
             self.remove_all_existing_keys()
             decrypted = gpg.decrypt(str(encrypted), passphrase='bbrown')
             self.assertFalse(decrypted.ok)
-            expected = 'decryption failed' if gpg.version >= (2, 3) else 'no secret key'
+            expected = 'decryption failed' if gpg.version == (2, 3, 1) else 'no secret key'
             self.assertEqual(decrypted.status, expected)
         finally:
             logger.debug("test_no_such_key ends")
@@ -1255,7 +1255,8 @@ def test_get_recipients(self):
             key2 = gpg.gen_key(inp)
             data = 'super secret'.encode(gpg.encoding)
             edata = gpg.encrypt(data, (key1.fingerprint, key2.fingerprint))
-            ids = gpg.get_recipients(edata.data)
+            logger.debug('Getting recipients')
+            ids = gpg.get_recipients(edata.data.decode(gpg.encoding))
             self.assertGreater(len(ids), 0)
             idlen = len(ids[0])
             ids = set(ids)