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# Copyright 2011 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/>.
import unittest
import bgproc
def callback(request):
return request + 1
class BackgroundProcessingTests(unittest.TestCase):
def setUp(self):
self.bg = bgproc.BackgroundProcessing(callback)
def tearDown(self):
self.bg.close_requests()
self.bg.finish()
def test_has_no_pending_initially(self):
self.assertEqual(self.bg.pending, 0)
def test_get_results_returns_nothing_initially(self):
self.assertEqual(self.bg.get_results(), [])
def test_processes_stuff(self):
self.bg.enqueue_request(0)
# The following is not a race condition, because the counter
# only gets decremented after get_results has retrieved the result,
# and we only call that later.
self.assertEqual(self.bg.pending, 1)
self.assertEqual(self.bg.get_results(block=True), [1])
self.assertEqual(self.bg.pending, 0)
self.assertEqual(self.bg.get_results(block=True), [])
def test_gets_all_results(self):
self.bg.enqueue_request(0)
self.bg.enqueue_request(1)
self.assertEqual(sorted(self.bg.get_results(block_all=True)), [1, 2])
self.assertEqual(self.bg.pending, 0)
self.assertEqual(self.bg.get_results(block_all=True), [])
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