/usr/lib/python3/dist-packages/checkbox/lib/tests/test_resolver.py is in python3-checkbox 0.17.6-0ubuntu6.
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# This file is part of Checkbox.
#
# Copyright 2008 Canonical Ltd.
#
# Checkbox is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3,
# as published by the Free Software Foundation.
#
# Checkbox 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 Checkbox. If not, see <http://www.gnu.org/licenses/>.
#
import unittest
from checkbox.lib.resolver import Resolver
class ResolverTest(unittest.TestCase):
def setUp(self):
self.resolver = Resolver()
def test_dependencies_none(self):
try:
self.resolver.get_dependencies('a')
except Exception as error:
self.assertTrue(error.args[0].startswith('no dependencies'))
else:
self.fail('non existing element accepted by resolver')
def test_dependencies_one_level(self):
self.resolver.add('a')
results = self.resolver.get_dependencies('a')
self.assertListEqual(results, ['a'])
def test_dependencies_two_level(self):
self.resolver.add('a')
self.resolver.add('b', 'a')
results = self.resolver.get_dependencies('b')
self.assertListEqual(results, ['a', 'b'])
def test_dependencies_multiple(self):
self.resolver.add('a')
# A appears as a dependency multiple times
# in b and c, but isn't a circular dependency
self.resolver.add('b', 'a')
self.resolver.add('c', 'a', 'b')
results = self.resolver.get_dependencies('c')
self.assertListEqual(results, ['a', 'b', 'c'])
def test_dependencies_circular(self):
try:
self.resolver.add('a', 'b')
self.resolver.add('b', 'a')
self.resolver.get_dependencies('a')
except Exception as error:
self.assertTrue(error.args[0].startswith('circular dependency'))
else:
self.fail('circular dependency not detected')
def test_dependents_none(self):
self.resolver.add('a')
results = self.resolver.get_dependents('a')
self.assertTrue(len(results) == 0)
def test_dependents_one(self):
self.resolver.add('a')
self.resolver.add('b', 'a')
results = self.resolver.get_dependents('a')
self.assertListEqual(results, ['b'])
def test_dependents_two(self):
resolver = Resolver()
resolver.add('a')
resolver.add('b', 'a')
resolver.add('c', 'b')
results = resolver.get_dependents('a')
self.assertListEqual(results, ['b', 'c'])
def test_multiple_resolve_steps(self):
self.resolver.add('a', 'b')
results = self.resolver.get_dependents()
self.assertListEqual(results, ['a'])
self.resolver.add('b')
results = self.resolver.get_dependents()
self.assertListEqual(results, ['b', 'a'])
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