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# Copyright 2014 Lars Wirzenius
#
# 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 3 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, see <http://www.gnu.org/licenses/>.
#
# =*= License: GPL-3+ =*=
import contextlib
import errno
import StringIO
import unittest
import distixlib
class MetadataSaverTests(unittest.TestCase):
def test_raises_specific_error_when_open_fails(self):
def raise_ioerror(*args):
raise IOError(errno.EROFS, 'rofs', 'filename')
saver = distixlib.MetadataSaver()
saver._open_file = raise_ioerror
self.assertRaises(
distixlib.CannotSaveMetadataError,
saver.save_to_file,
'my-filename',
distixlib.Metadata())
def test_saves_to_file(self):
f = StringIO.StringIO()
f.close = lambda: None
def capture_text(*args):
return contextlib.closing(f)
metadata = distixlib.Metadata()
metadata.add('key', 'value')
saver = distixlib.MetadataSaver()
saver._open_file = capture_text
saver.save_to_file('foobar', metadata)
self.assertEqual(f.getvalue(), 'key:\n- value\n')
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