python: Add an idiomatic interface.

* configure.ac: Bump required Python version.
* lang/python/pyme/__init__.py: Update docstring.  Import Context and
Data.
* lang/python/pyme/core.py (Context.encrypt): New function.
(Context.decrypt): Likewise.
(Context.sign): Likewise.
(Context.verify): Likewise.
* lang/python/pyme/errors.py: Add new errors.
* lang/python/pyme/util.py (process_constants): Rework and return the
inserted keys.
* lang/python/tests/Makefile.am (EXTRA_DIST): Add new keys.
* lang/python/tests/encrypt-only.asc: New file.
* lang/python/tests/sign-only.asc: Likewise.
* lang/python/tests/initial.py: Mark key 'Alpha' as trusted, import
new keys.
* lang/python/tests/support.py: Add fingerprints of known keys.
(in_srcdir): New function.
(print_data): Handle bytes too.
(mark_key_trusted): New function.
* lang/python/tests/t-decrypt-verify.py: Adjust test.  Test idiomatic
interface.
* lang/python/tests/t-decrypt.py: Test idiomatic interface.
* lang/python/tests/t-encrypt-sign.py: Likewise.
* lang/python/tests/t-encrypt-sym.py: Likewise.
* lang/python/tests/t-encrypt.py: Likewise.
* lang/python/tests/t-idiomatic.py: Simplify.
* lang/python/tests/t-keylist.py: Adjust to newly trusted key.
* lang/python/tests/t-sign.py: Likewise.  Test idiomatic interface.
* lang/python/tests/t-signers.py: Likewise.
* lang/python/tests/t-verify.py: Likewise.

Signed-off-by: Justus Winter <[email protected]>

1 files changed, 25 insertions, 2 deletions

diff --git a/lang/python/tests/t-encrypt.py b/lang/python/tests/t-encrypt.py
index 24869fcd..4c77f39c 100755
--- a/lang/python/tests/t-encrypt.py
+++ b/lang/python/tests/t-encrypt.py
@@ -17,6 +17,7 @@
 # You should have received a copy of the GNU Lesser General Public
 # License along with this program; if not, see <http://www.gnu.org/licenses/>.
 
+import pyme
 from pyme import core, constants
 import support
 
@@ -34,6 +35,28 @@ keys.append(c.get_key("D695676BDCEDCC2CDD6152BCFE180B1DA9E3B0B2", False))
 c.op_encrypt(keys, constants.ENCRYPT_ALWAYS_TRUST, source, sink)
 result = c.op_encrypt_result()
 assert not result.invalid_recipients, \
-    "Invalid recipient encountered: {}".format(result.invalid_recipients.fpr)
-
+  "Invalid recipients: {}".format(", ".join(r.fpr for r in result.recipients))
 support.print_data(sink)
+
+# Idiomatic interface.
+with pyme.Context(armor=True) as c:
+    ciphertext, _, _ = c.encrypt("Hallo Leute\n".encode(),
+                                 recipients=keys,
+                                 sign=False,
+                                 always_trust=True)
+    assert len(ciphertext) > 0
+    assert ciphertext.find(b'BEGIN PGP MESSAGE') > 0, 'Marker not found'
+
+    c.encrypt("Hallo Leute\n".encode(),
+              recipients=[c.get_key(support.encrypt_only, False)],
+              sign=False, always_trust=True)
+
+    try:
+        c.encrypt("Hallo Leute\n".encode(),
+                  recipients=[c.get_key(support.sign_only, False)],
+                  sign=False, always_trust=True)
+    except pyme.errors.InvalidRecipients as e:
+        assert len(e.recipients) == 1
+        assert support.sign_only.endswith(e.recipients[0].fpr)
+    else:
+        assert False, "Expected an InvalidRecipients error, got none"