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# distbuild/artifact_reference_tests.py -- unit tests for Artifact encoding
#
# Copyright (C) 2012, 2014-2015 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, see <http://www.gnu.org/licenses/>.
import unittest
import distbuild
class MockSource(object):
build_mode = 'staging'
prefix = '/usr'
def __init__(self, name, kind):
self.name = name
self.repo = None
self.repo_name = '%s.source.repo_name' % name
self.original_ref = '%s.source.original_ref' % name
self.sha1 = '%s.source.sha1' % name
self.tree = '%s.source.tree' % name
self.morphology = {'kind': kind}
self.filename = '%s.source.filename' % name
self.dependencies = []
self.cache_id = {
'blip': '%s.blip' % name,
'integer': 42,
}
self.cache_key = '%s.cache_key' % name
self.artifacts = {}
class MockArtifact(object):
arch = 'testarch'
def __init__(self, name, kind):
self.source = MockSource(name, kind)
self.source.artifacts = {name: self}
self.name = name
self.dependents = []
def basename(self):
return '%s.%s.%s' % (self.source.cache_key,
self.source.morphology['kind'],
self.name)
def walk(self): # pragma: no cover
done = set()
def depth_first(a):
if a not in done:
done.add(a)
for dep in a.source.dependencies:
for ret in depth_first(dep):
yield ret
yield a
return list(depth_first(self))
class ArtifactReferenceTests(unittest.TestCase):
def setUp(self):
self.art1 = MockArtifact('name1', 'stratum')
self.art2 = MockArtifact('name2', 'chunk')
self.art3 = MockArtifact('name3', 'chunk')
self.art4 = MockArtifact('name4', 'chunk')
def verify_round_trip(self, artifact):
encoded = distbuild.encode_artifact(artifact,
artifact.source.repo_name,
artifact.source.sha1)
decoded = distbuild.decode_artifact_reference(encoded)
self.assertEqual(artifact.basename(), decoded.basename())
objs = {}
queue = [decoded]
while queue:
obj = queue.pop()
k = obj.cache_key
if k in objs:
self.assertTrue(obj is objs[k])
else:
objs[k] = obj
queue.extend(obj.dependencies)
def test_returns_string(self):
encoded = distbuild.encode_artifact(self.art1,
self.art1.source.repo_name,
self.art1.source.sha1)
self.assertEqual(type(encoded), str)
def test_works_without_dependencies(self):
self.verify_round_trip(self.art1)
def test_works_with_single_dependency(self):
self.art1.source.dependencies = [self.art2]
self.verify_round_trip(self.art1)
def test_works_with_two_dependencies(self):
self.art1.source.dependencies = [self.art2, self.art3]
self.verify_round_trip(self.art1)
def test_works_with_two_levels_of_dependencies(self):
self.art2.source.dependencies = [self.art4]
self.art1.source.dependencies = [self.art2, self.art3]
self.verify_round_trip(self.art1)
def test_works_with_dag(self):
self.art2.source.dependencies = [self.art4]
self.art3.source.dependencies = [self.art4]
self.art1.source.dependencies = [self.art2, self.art3]
self.verify_round_trip(self.art1)
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