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# This file is part of Checkbox.
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# Copyright 2008 Canonical Ltd.
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# Checkbox is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# Checkbox is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with Checkbox. If not, see <http://www.gnu.org/licenses/>.
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from checkbox.resolver import Resolver
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class ResolverTest(unittest.TestCase):
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def test_dependencies_none(self):
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resolver.get_dependencies('a')
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except Exception, error:
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self.assertTrue(error.args[0].startswith('no dependencies'))
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self.fail('non existing element accepted by resolver')
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def test_dependencies_one_level(self):
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results = resolver.get_dependencies('a')
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self.assertTrue(len(results) == 1)
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self.assertTrue(results[0] == 'a')
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def test_dependencies_two_level(self):
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resolver.add('b', 'a')
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results = resolver.get_dependencies('b')
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self.assertTrue(len(results) == 2)
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self.assertTrue(results[0] == 'a')
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self.assertTrue(results[1] == 'b')
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def test_dependencies_multiple(self):
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resolver.add('c', 'a', 'b')
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results = resolver.get_dependencies('c')
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self.assertTrue(len(results) == 3)
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self.assertTrue(results[0] == 'a')
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self.assertTrue(results[1] == 'b')
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self.assertTrue(results[2] == 'c')
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def test_dependencies_circular(self):
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resolver.add('a', 'b')
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resolver.add('b', 'a')
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resolver.get_dependencies('a')
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except Exception, error:
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self.assertTrue(error.args[0].startswith('circular dependency'))
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self.fail('circular dependency not detected')
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def test_dependents_none(self):
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results = resolver.get_dependents('a')
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self.assertTrue(len(results) == 0)
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def test_dependents_one(self):
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resolver.add('b', 'a')
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results = resolver.get_dependents('a')
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self.assertTrue(len(results) == 1)
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self.assertTrue(results[0] == 'b')
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def test_dependents_two(self):
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resolver.add('b', 'a')
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resolver.add('c', 'b')
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results = resolver.get_dependents('a')
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self.assertTrue(len(results) == 2)
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self.assertTrue(results[0] == 'b')
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self.assertTrue(results[1] == 'c')