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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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