python: Fix writing to data buffers.

* lang/python/gpgme.i: Add typemap for buffers.
* lang/python/pyme/core.py (Data.write): Fix function.
* lang/python/tests/Makefile.am: Add new test.
* lang/python/tests/t-data.py: New file.

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

1 files changed, 49 insertions, 0 deletions

diff --git a/lang/python/tests/t-data.py b/lang/python/tests/t-data.py
new file mode 100755
index 00000000..af2eb986
--- /dev/null
+++ b/lang/python/tests/t-data.py
@@ -0,0 +1,49 @@
+#!/usr/bin/env python3
+
+# Copyright (C) 2016 g10 Code GmbH
+#
+# This file is part of GPGME.
+#
+# GPGME is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# GPGME is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General
+# Public License for more details.
+#
+# 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 os
+
+from pyme import core
+
+data = core.Data('Hello world!')
+assert data.read() == b'Hello world!'
+assert data.read() == b''
+
+data.seek(0, os.SEEK_SET)
+assert data.read() == b'Hello world!'
+assert data.read() == b''
+
+data = core.Data(b'Hello world!')
+assert data.read() == b'Hello world!'
+
+data = core.Data()
+data.write('Hello world!')
+data.seek(0, os.SEEK_SET)
+assert data.read() == b'Hello world!'
+
+data = core.Data()
+data.write(b'Hello world!')
+data.seek(0, os.SEEK_SET)
+assert data.read() == b'Hello world!'
+
+binjunk = bytes(range(256))
+data = core.Data()
+data.write(binjunk)
+data.seek(0, os.SEEK_SET)
+assert data.read() == binjunk