~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2005 Canonical Ltd

#   Authors: Robert Collins <robert.collins@canonical.com>

#

# This program 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.

#

# This program 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 General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

"""Tests for signing and verifying blobs of data via gpg."""

# import system imports here

import os

import sys

from bzrlib import errors, ui

import bzrlib.gpg as gpg

from bzrlib.tests import TestCase, TestCaseInTempDir

class FakeConfig(object):

    def gpg_signing_command(self):

        return "false"

class TestCommandLine(TestCase):

    def test_signing_command_line(self):

        my_gpg = gpg.GPGStrategy(FakeConfig())

        self.assertEqual(['false',  '--clearsign'],

                         my_gpg._command_line())

    def test_checks_return_code(self):

        # This test needs a unix like platform - one with 'false' to run.

        # if you have one, please make this work :)

        my_gpg = gpg.GPGStrategy(FakeConfig())

        self.assertRaises(errors.SigningFailed, my_gpg.sign, 'content')

    def assertProduces(self, content):

        # This needs a 'cat' command or similar to work.

        my_gpg = gpg.GPGStrategy(FakeConfig())

        if sys.platform == 'win32':

            # Windows doesn't come with cat, and we don't require it

            # so lets try using python instead.

            # But stupid windows and line-ending conversions. 

            # It is too much work to make sys.stdout be in binary mode.

            # http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/65443

            my_gpg._command_line = lambda:[sys.executable, '-c',

                    'import sys; sys.stdout.write(sys.stdin.read())']

            new_content = content.replace('\n', '\r\n')

            self.assertEqual(new_content, my_gpg.sign(content))

        else:

            my_gpg._command_line = lambda:['cat', '-']

            self.assertEqual(content, my_gpg.sign(content))

    def test_returns_output(self):

        content = "some content\nwith newlines\n"

        self.assertProduces(content)

    def test_clears_progress(self):

        content = "some content\nwith newlines\n"

        old_clear_term = ui.ui_factory.clear_term

        clear_term_called = [] 

        def clear_term():

            old_clear_term()

            clear_term_called.append(True)

        ui.ui_factory.clear_term = clear_term

        try:

            self.assertProduces(content)

        finally:

            ui.ui_factory.clear_term = old_clear_term

        self.assertEqual([True], clear_term_called)

    def test_aborts_on_unicode(self):

        """You can't sign Unicode text; it must be encoded first."""

        self.assertRaises(errors.BzrBadParameterUnicode,

                          self.assertProduces, u'foo')

class TestDisabled(TestCase):

    def test_sign(self):

        self.assertRaises(errors.SigningFailed,

                          gpg.DisabledGPGStrategy(None).sign, 'content')