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#!/usr/bin/env python
# Copyright (C) 2014 Codethink Limited
#
# 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; version 2 of the License.
#
# 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.
import unittest
import pip_find_deps
from pkg_resources import parse_requirements, parse_version
def reverse(xs):
return xs[::-1]
class ConflictDetectionTests(unittest.TestCase):
def setUp(self):
reqs = ['a == 0.1', 'a == 0.2']
self.test_requirements = parse_requirements(reqs)
def test_eqs_two_different_versions(self):
# ('==', '0.1') conflicts with ('==', '0.2')
deps = pip_find_deps.resolve_version_constraints(
self.test_requirements)
self.assertEqual(len(deps), 1)
_, dep = deps.popitem()
self.assertEqual(len(dep.conflicts), 1)
self.assertEqual(dep.conflicts, [(('==', parse_version('0.1')),
('==', parse_version('0.2')))])
def run_conflict_test(self, requirements, expected_conflicts):
deps = pip_find_deps.resolve_version_constraints(requirements)
self.assertEqual(len(deps), 1)
_, dep = deps.popitem()
print 'requirements: ', requirements
print 'expected_conflicts: ', expected_conflicts
print 'dep.conflicts: ', dep.conflicts
self.assertEqual(len(dep.conflicts), 1)
self.assertEqual(dep.conflicts, expected_conflicts)
# TODO: squash this into one?
def test_less_than(self):
requirements = list(parse_requirements(['a == 0.1', 'a < 0.1']))
expected_conflict = (('==', parse_version('0.1')),
('<', parse_version('0.1')))
# ('==', '0.1') conflicts with ('<', 0.1)
self.run_conflict_test(requirements, [expected_conflict])
# ('<', 0.1) conflicts with ('==', '0.1')
self.run_conflict_test(reverse(requirements), [reverse(expected_conflict)])
def test_greater_than(self):
requirements = list(parse_requirements(['a == 0.1', 'a > 0.1']))
expected_conflict = (('==', parse_version('0.1')),
('>', parse_version('0.1')))
# ('==', '0.1') conflicts with ('>', 0.1)
self.run_conflict_test(requirements, [expected_conflict])
# ('>', 0.1) conflicts with ('==', '0.1')
self.run_conflict_test(reverse(requirements), [reverse(expected_conflict)])
def test_eqs_nt_eqs(self):
requirements = list(parse_requirements(['a == 0.1', 'a != 0.1']))
expected_conflict = (('==', parse_version('0.1')),
('!=', parse_version('0.1')))
# ('==', '0.1') conflicts with ('!=', '0.1')
self.run_conflict_test(requirements, [expected_conflict])
# ('!=', '0.1') conflicts with ('==', '0.1')
self.run_conflict_test(reverse(requirements), [reverse(expected_conflict)])
def test_bounds_one_version(self):
requirements = list(parse_requirements(['a < 0.1', 'a > 0.1']))
expected_conflict = (('<', parse_version('0.1')),
('>', parse_version('0.1')))
# ('<', '0.1') conflicts with ('>', '0.1')
self.run_conflict_test(requirements, [expected_conflict])
# ('>', '0.1') conflicts with ('<', '0.1')
self.run_conflict_test(reverse(requirements), [reverse(expected_conflict)])
def test_bounds_two_versions(self):
requirements = list(parse_requirements(['a < 0.1', 'a > 0.2']))
expected_conflict = (('<', parse_version('0.1')),
('>', parse_version('0.2')))
# ('<', '0.1') conflicts with ('>', '0.2')
self.run_conflict_test(requirements, [expected_conflict])
# ('>', '0.2') conflicts with ('<', '0.1')
self.run_conflict_test(reverse(requirements), [reverse(expected_conflict)])
def test_eqs_bounds_two_versions(self):
requirements = list(parse_requirements(['a <= 0.1', 'a >= 0.2']))
expected_conflict = (('<=', parse_version('0.1')),
('>=', parse_version('0.2')))
# ('<=', 0.1) conflicts with ('>=', 0.2)
self.run_conflict_test(requirements, [expected_conflict])
self.run_conflict_test(reverse(requirements), [reverse(expected_conflict)])
def run_test_no_conflict(self, requirements):
# No conflict expected here,
# for now it's enough to see that the list of conflicts is empty
deps = pip_find_deps.resolve_version_constraints(requirements)
self.assertEqual(len(deps), 1)
_, dep = deps.popitem()
self.assertEqual(len(dep.conflicts), 0)
def test_less_than_or_equal(self):
requirements = list(parse_requirements(['a <= 0.1', 'a == 0.1']))
self.run_test_no_conflict(requirements)
self.run_test_no_conflict(reverse(requirements))
def test_greater_than_or_equal(self):
requirements = list(parse_requirements(['a >= 0.1', 'a == 0.1']))
self.run_test_no_conflict(requirements)
self.run_test_no_conflict(reverse(requirements))
if __name__ == '__main__':
suite = unittest.TestLoader().loadTestsFromTestCase(ConflictDetectionTests)
unittest.TextTestRunner(verbosity=2).run(suite)
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