def _NeedsSnapshot(repo_root, project):
"""Test if project's revision is reachable from its upstream ref."""
# Some projects don't have an upstream set. Try 'master' anyway.
branch = _GetUpstreamBranch(project) or 'master'
upstream_ref = 'refs/remotes/%s/%s' % (project.Remote().GitName(), branch)
project_path = os.path.join(repo_root, project.Path())
try:
if git.IsReachable(project_path, project.revision, upstream_ref):
return False
except cros_build_lib.RunCommandError as e:
logging.debug('Reachability check failed: %s', e)
logging.info('Project %s revision %s not reachable from upstream %r.',
project.name, project.revision, upstream_ref)
return True
def testIsReachableFalse(self):
git1 = self._MakeRepo('git1', self.source)
patch1 = self.CommitFile(git1, 'foo', 'foo')
patch2 = self.CommitFile(git1, 'bar', 'bar')
self.assertFalse(git.IsReachable(git1, patch2.sha1, patch1.sha1))