# Copyright 2007 Google Inc.
#
# 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
"""Unit tests for sources/source.py."""

__author__ = "jaq@google.com (Jamie Wilkinson)"

import unittest

from nss_cache.sources import source
from nss_cache.sources import source_factory


class TestSourceFactory(unittest.TestCase):
    """Unit tests for the source factory."""

    def testRegister(self):

        number_of_sources = len(source_factory._source_implementations)

        class DummySource(source.Source):
            name = "dummy"

        source_factory.RegisterImplementation(DummySource)

        self.assertEqual(
            number_of_sources + 1, len(source_factory._source_implementations)
        )
        self.assertEqual(DummySource, source_factory._source_implementations["dummy"])

    def testRegisterWithoutName(self):
        class DummySource(source.Source):
            pass

        self.assertRaises(
            RuntimeError, source_factory.RegisterImplementation, DummySource
        )

    def testCreateWithNoImplementations(self):
        source_factory._source_implementations = {}
        self.assertRaises(RuntimeError, source_factory.Create, {})

    def testCreate(self):
        class DummySource(source.Source):
            name = "dummy"

        source_factory.RegisterImplementation(DummySource)

        dummy_config = {"name": "dummy"}
        dummy_source = source_factory.Create(dummy_config)

        self.assertEqual(DummySource, type(dummy_source))


if __name__ == "__main__":
    unittest.main()