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# Copyright 2019 Gentoo Authors
# 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 AgressiveBacktrackDowngradeTestCase(TestCase):
def testAgressiveBacktrackDowngrade(self):
ebuilds = {
'www-client/firefox-69.0' : {
'EAPI': '7',
'RDEPEND': '=media-libs/libvpx-1.7*:0=[postproc] media-video/ffmpeg'
},
'www-client/firefox-60.9.0' : {
'EAPI': '7',
'RDEPEND': ''
},
'media-libs/libvpx-1.8.0' : {
'EAPI': '7',
'SLOT' : '0/6',
'IUSE': 'postproc',
},
'media-libs/libvpx-1.7.0' : {
'EAPI': '7',
'SLOT' : '0/5',
'IUSE': '+postproc',
},
'media-libs/libvpx-1.6.0' : {
'EAPI': '7',
'SLOT' : '0/4',
'IUSE': 'postproc',
},
'media-video/ffmpeg-4.2' : {
'EAPI': '7',
'RDEPEND': 'media-libs/libvpx:=',
},
}
installed = {
'www-client/firefox-69.0' : {
'EAPI': '7',
'RDEPEND': '=media-libs/libvpx-1.7*:0/5=[postproc] media-video/ffmpeg'
},
'media-libs/libvpx-1.7.0' : {
'EAPI': '7',
'SLOT' : '0/5',
'IUSE': '+postproc',
'USE': 'postproc',
},
'media-video/ffmpeg-4.2' : {
'EAPI': '7',
'RDEPEND': 'media-libs/libvpx:0/5=',
},
}
world = ['media-video/ffmpeg', 'www-client/firefox']
test_cases = (
# Test bug 693836, where an attempt to upgrade libvpx lead
# to aggressive backtracking which ultimately triggered an
# undesirable firefox downgrade like this:
# [ebuild U ] media-libs/libvpx-1.8.0 [1.7.0]
# [ebuild UD ] www-client/firefox-60.9.0 [69.0]
# [ebuild rR ] media-video/ffmpeg-4.2
ResolverPlaygroundTestCase(
['@world'],
options = {'--update': True, '--deep': True},
success = True,
mergelist = [],
),
)
playground = ResolverPlayground(ebuilds=ebuilds,
installed=installed, world=world, debug=False)
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.debug = False
playground.cleanup()
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