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# Copyright 2017 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
from portage.tests import TestCase
from portage.tests.resolver.ResolverPlayground import (
ResolverPlayground,
ResolverPlaygroundTestCase,
)
class AutounmaskUseBacktrackTestCase(TestCase):
def testAutounmaskUseBacktrack(self):
ebuilds = {
'dev-libs/A-1': {
'EAPI': '6',
'RDEPEND': 'dev-libs/C',
},
'dev-libs/A-2': {
'EAPI': '6',
'RDEPEND': 'dev-libs/C[y]',
},
'dev-libs/A-3': {
'EAPI': '6',
'RDEPEND': 'dev-libs/C',
},
'dev-libs/B-1': {
'EAPI': '6',
'RDEPEND': '<dev-libs/A-3',
},
'dev-libs/C-1': {
'EAPI': '6',
'IUSE': 'x y z',
},
'dev-libs/D-1': {
'EAPI': '6',
'RDEPEND': '>=dev-libs/A-2 dev-libs/C[x]',
},
}
installed = {
'dev-libs/A-1': {
'EAPI': '6',
'RDEPEND': 'dev-libs/C',
},
'dev-libs/B-1': {
'EAPI': '6',
'RDEPEND': '<dev-libs/A-3',
},
'dev-libs/C-1': {
'EAPI': '6',
'IUSE': 'x y z',
},
}
world = ['dev-libs/B']
test_cases = (
# Test bug 632598, where autounmask USE changes triggered
# unnecessary backtracking. The following case should
# require a --backtrack setting no larger than 2.
ResolverPlaygroundTestCase(
['dev-libs/D'],
options={
'--autounmask-backtrack': 'y',
'--backtrack': 2,
},
success=False,
ambiguous_merge_order=True,
mergelist=[
('dev-libs/C-1', 'dev-libs/A-2'),
'dev-libs/D-1',
],
use_changes={'dev-libs/C-1': {'y': True, 'x': True}},
),
)
playground = ResolverPlayground(
ebuilds=ebuilds, installed=installed, world=world)
try:
for test_case in test_cases:
playground.run_TestCase(test_case)
self.assertEqual(test_case.test_success, True,
test_case.fail_msg)
finally:
playground.cleanup()
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