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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 MetadataLoaderTests(unittest.TestCase):
def test_raises_specific_error_when_open_fails(self):
def raise_ioerror(*args):
raise IOError((errno.ENOENT, 'no existy', 'foobar'))
loader = distixlib.MetadataLoader()
loader._open_file = raise_ioerror
self.assertRaises(
distixlib.CannotLoadMetadataError,
loader.load_from_file,
'this does not need to exist')
def test_loads_from_file(self):
def return_text(*args):
return contextlib.closing(StringIO.StringIO('key:\n- value\n'))
loader = distixlib.MetadataLoader()
loader._open_file = return_text
metadata = loader.load_from_file('foo')
self.assertListEqual(metadata.keys(), ['key'])
self.assertListEqual(metadata.get_all_values('key'), ['value'])
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