Check validity of key signature

Check if a new fetched key was signed by a old key with the same address.

Please do not merge before: https://github.com/isislovecruft/python-gnupg/pull/150

- Resolves #8112

1 files changed, 12 insertions, 0 deletions

diff --git a/tests/integration/keymanager/test_openpgp.py b/tests/integration/keymanager/test_openpgp.py
index b16e52fd..d04f5d01 100644
--- a/tests/integration/keymanager/test_openpgp.py
+++ b/tests/integration/keymanager/test_openpgp.py
@@ -37,6 +37,9 @@ from common import (
     PUBLIC_KEY_2,
     PRIVATE_KEY,
     PRIVATE_KEY_2,
+    NEW_PUB_KEY,
+    OLD_AND_NEW_KEY_ADDRESS,
+    OLD_PUB_KEY
 )
 
 
@@ -339,6 +342,15 @@ class OpenPGPCryptoTestCase(KeyManagerWithSoledadTestCase):
         d = pgp.get_key(address, private=private)
         return self.assertFailure(d, KeyNotFound)
 
+    def test_key_is_signed_by(self):
+        pgp = openpgp.OpenPGPScheme(
+            self._soledad, gpgbinary=self.gpg_binary_path)
+        old_pubkey, old_privkey = pgp.parse_key(
+            OLD_PUB_KEY, OLD_AND_NEW_KEY_ADDRESS)
+        new_pubkey, new_privkey = pgp.parse_key(
+            NEW_PUB_KEY, OLD_AND_NEW_KEY_ADDRESS)
+        self.assertTrue(new_pubkey.is_signed_by(old_pubkey))
+
     @inlineCallbacks
     def _insert_key_docs(self, refreshed_at):
         for date in refreshed_at: