superproject: Don't exit if superproject tag doesn't exist in manifest.

Don't exit if there are missing commit ids in superproject.

This change implements the following suggestion from delphij@:

"we should note the event (so we know that --use-superproject but there
 were some errors, e.g. manifest didn't specify commit id for some
 reason, or if there is no superproject but --use-superproject is
 used), print out a message telling the use that this is not support,
 but continue as if --no-use-superproject was specified?"

Changes:

superproject:
+ Added git_trace2_event_log as an argument to the constructor.
+ Sync method returns SyncResult a NamedTuple of
  ++ success - True if sync of superproject is successful, or False.
  ++ fatal - True if caller should exit, Or False.
+ UpdateProjectsRevisionId returns UpdateProjectsResult a NamedTuple of
   ++ manifest_path - path name of the overriding manifest file instead
      of None
   ++ fatal - True if caller should exit, Or False
+ _GetAllProjectsCommitIds returns CommitIdsResult a NamedTuple of
  ++ commit_ids - a dictionary with the projects/commit ids on success,
     otherwise None
  ++ fatal - True if caller should exit, Or False
+ Added  _SkipUpdatingProjectRevisionId a helper function to see if a
  project's revision id needs to be updated or not. This function is
  used to exclude projects from local manifest file.
+ Added the following error events into git_trace2_event_log
  ++ If superproject is missing in a manifest
  ++ If there are missing commit ids for projects.

command.py:
+ Deleted unused import - platform
+ Added git_trace2_event_log as a member so all subcmds can log error
  events.

main.py:
+ Initialized git_trace2_event_log as a member of command object.

init.py:
+ Deleted unused import - optparse

init.py:
+ Called sys.exit only if Sync returns exit=True

sync.py:
+ Called sys.exit only if Superproject's UpdateProjectsRevisionId returns
  exit=True
+ Reloaded the manifest only if manifest path is returned by
  UpdateProjectsRevisionId. If not, fall back to the old way of doing
  repo sync.

test_git_superproject:
+ Added code to verify error events are being logged.
+ Added a test for no superproject tag
+ Added test for UpdateProjectsRevisionId not updating the revision id
  with the commit ids.

Tested the code with the following commands.

+ Positive test case with aosp-master.
  $ repo_dev init -u persistent-https://android.git.corp.google.com/platform/manifest -b master --use-superproject
  NOTICE: --use-superproject is in beta; report any issues to the address described in `repo version`
  .../android/aosp/.repo/exp-superproject/925043f706ba64db713e9bf3b55987e2-superproject.git: Initial setup for superproject completed.

  Your identity is: Raman Tenneti <rtenneti@google.com>
  If you want to change this, please re-run 'repo init' with --config-name

  repo has been initialized in .../android/aosp

  $ repo_dev sync -j40 --use-superproject
  remote: Total 12 (delta 4), reused 12 (delta 4)
  NOTICE: --use-superproject is in beta; report any issues to the address described in `repo version`
  .../android/aosp/.repo/exp-superproject/925043f706ba64db713e9bf3b55987e2-superproject.git: Initial setup for superproject completed.
  ...
  repo sync has finished successfully.

+ Negative test case without superproject tag.
  $ repo_dev sync -j40 --use-superproject
  NOTICE: --use-superproject is in beta; report any issues to the address described in `repo version`
  repo error: superproject tag is not defined in manifest: .../android/aosp/.repo/manifest.xml
  error: Cannot get project commit ids from manifest
  error: Update of revsionId from superproject has failed. Please resync with --no-use-superproject option
  ...
  Checking out: 100% (1022/1022), done in 3.589s
  repo sync has finished successfully.

+ Test for missing commit_id for a project.
  $ repo_dev sync -j40 --use-superproject
  NOTICE: --use-superproject is in beta; report any issues to the address described in `repo version`
  .../android/aosp/.repo/exp-superproject/925043f706ba64db713e9bf3b55987e2-superproject.git: Initial setup for superproject completed.
  error: please file a bug using go/repo-bug to report missing commit_ids for: ['build/blueprint']
  error: Update of revsionId from superproject has failed. Please resync with --no-use-superproject option
  ...
  Checking out: 100% (1022/1022), done in 3.364s
  repo sync has finished successfully.

$ ./run_tests -v
  ...
  ...== 164 passed in 2.87s ==...

Bug: [google internal] b/189371541
Change-Id: I5ea49f87e8fa41be590fc0c914573e16c8cdfcfa
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/309162
Tested-by: Raman Tenneti <rtenneti@google.com>
Reviewed-by: Mike Frysinger <vapier@google.com>
This commit is contained in:
Raman Tenneti 2021-06-11 17:29:45 -07:00
parent b8c84483a5
commit 784e16f3aa
6 changed files with 225 additions and 61 deletions

View File

@ -15,7 +15,6 @@
import multiprocessing
import os
import optparse
import platform
import re
import sys
@ -58,11 +57,13 @@ class Command(object):
# it is the number of parallel jobs to default to.
PARALLEL_JOBS = None
def __init__(self, repodir=None, client=None, manifest=None, gitc_manifest=None):
def __init__(self, repodir=None, client=None, manifest=None, gitc_manifest=None,
git_event_log=None):
self.repodir = repodir
self.client = client
self.manifest = manifest
self.gitc_manifest = gitc_manifest
self.git_event_log = git_event_log
# Cache for the OptionParser property.
self._optparse = None

View File

@ -19,12 +19,13 @@ https://en.wikibooks.org/wiki/Git/Submodules_and_Superprojects
Examples:
superproject = Superproject()
project_commit_ids = superproject.UpdateProjectsRevisionId(projects)
UpdateProjectsResult = superproject.UpdateProjectsRevisionId(projects)
"""
import hashlib
import os
import sys
from typing import NamedTuple
from git_command import git_require, GitCommand
from git_refs import R_HEADS
@ -34,6 +35,33 @@ _SUPERPROJECT_GIT_NAME = 'superproject.git'
_SUPERPROJECT_MANIFEST_NAME = 'superproject_override.xml'
class SyncResult(NamedTuple):
"""Return the status of sync and whether caller should exit."""
# Whether the superproject sync was successful.
success: bool
# Whether the caller should exit.
fatal: bool
class CommitIdsResult(NamedTuple):
"""Return the commit ids and whether caller should exit."""
# A dictionary with the projects/commit ids on success, otherwise None.
commit_ids: dict
# Whether the caller should exit.
fatal: bool
class UpdateProjectsResult(NamedTuple):
"""Return the overriding manifest file and whether caller should exit."""
# Path name of the overriding manfiest file if successful, otherwise None.
manifest_path: str
# Whether the caller should exit.
fatal: bool
class Superproject(object):
"""Get commit ids from superproject.
@ -41,19 +69,21 @@ class Superproject(object):
lookup of commit ids for all projects. It contains _project_commit_ids which
is a dictionary with project/commit id entries.
"""
def __init__(self, manifest, repodir, superproject_dir='exp-superproject',
quiet=False):
def __init__(self, manifest, repodir, git_event_log,
superproject_dir='exp-superproject', quiet=False):
"""Initializes superproject.
Args:
manifest: A Manifest object that is to be written to a file.
repodir: Path to the .repo/ dir for holding all internal checkout state.
It must be in the top directory of the repo client checkout.
git_event_log: A git trace2 event log to log events.
superproject_dir: Relative path under |repodir| to checkout superproject.
quiet: If True then only print the progress messages.
"""
self._project_commit_ids = None
self._manifest = manifest
self._git_event_log = git_event_log
self._quiet = quiet
self._branch = self._GetBranch()
self._repodir = os.path.abspath(repodir)
@ -172,44 +202,48 @@ class Superproject(object):
"""Gets a local copy of a superproject for the manifest.
Returns:
True if sync of superproject is successful, or False.
SyncResult
"""
print('NOTICE: --use-superproject is in beta; report any issues to the '
'address described in `repo version`', file=sys.stderr)
if not self._manifest.superproject:
print('error: superproject tag is not defined in manifest',
file=sys.stderr)
return False
msg = (f'repo error: superproject tag is not defined in manifest: '
f'{self._manifest.manifestFile}')
print(msg, file=sys.stderr)
self._git_event_log.ErrorEvent(msg, '')
return SyncResult(False, False)
should_exit = True
url = self._manifest.superproject['remote'].url
if not url:
print('error: superproject URL is not defined in manifest',
file=sys.stderr)
return False
return SyncResult(False, should_exit)
if not self._Init():
return False
return SyncResult(False, should_exit)
if not self._Fetch(url):
return False
return SyncResult(False, should_exit)
if not self._quiet:
print('%s: Initial setup for superproject completed.' % self._work_git)
return True
return SyncResult(True, False)
def _GetAllProjectsCommitIds(self):
"""Get commit ids for all projects from superproject and save them in _project_commit_ids.
Returns:
A dictionary with the projects/commit ids on success, otherwise None.
CommitIdsResult
"""
if not self.Sync():
return None
sync_result = self.Sync()
if not sync_result.success:
return CommitIdsResult(None, sync_result.fatal)
data = self._LsTree()
if not data:
print('error: git ls-tree failed to return data for superproject',
file=sys.stderr)
return None
return CommitIdsResult(None, True)
# Parse lines like the following to select lines starting with '160000' and
# build a dictionary with project path (last element) and its commit id (3rd element).
@ -225,7 +259,7 @@ class Superproject(object):
commit_ids[ls_data[3]] = ls_data[2]
self._project_commit_ids = commit_ids
return commit_ids
return CommitIdsResult(commit_ids, False)
def _WriteManfiestFile(self):
"""Writes manifest to a file.
@ -250,6 +284,23 @@ class Superproject(object):
return None
return manifest_path
def _SkipUpdatingProjectRevisionId(self, project):
"""Checks if a project's revision id needs to be updated or not.
Revision id for projects from local manifest will not be updated.
Args:
project: project whose revision id is being updated.
Returns:
True if a project's revision id should not be updated, or False,
"""
path = project.relpath
if not path:
return True
# Skip the project if it comes from the local manifest.
return any(s.startswith(LOCAL_MANIFEST_GROUP_PREFIX) for s in project.groups)
def UpdateProjectsRevisionId(self, projects):
"""Update revisionId of every project in projects with the commit id.
@ -257,30 +308,35 @@ class Superproject(object):
projects: List of projects whose revisionId needs to be updated.
Returns:
manifest_path: Path name of the overriding manfiest file instead of None.
UpdateProjectsResult
"""
commit_ids = self._GetAllProjectsCommitIds()
commit_ids_result = self._GetAllProjectsCommitIds()
commit_ids = commit_ids_result.commit_ids
if not commit_ids:
print('error: Cannot get project commit ids from manifest', file=sys.stderr)
return None
return UpdateProjectsResult(None, commit_ids_result.fatal)
projects_missing_commit_ids = []
for project in projects:
if self._SkipUpdatingProjectRevisionId(project):
continue
path = project.relpath
if not path:
continue
# Skip the project if it comes from local manifest.
if any(s.startswith(LOCAL_MANIFEST_GROUP_PREFIX) for s in project.groups):
continue
commit_id = commit_ids.get(path)
if commit_id:
project.SetRevisionId(commit_id)
else:
if not commit_id:
projects_missing_commit_ids.append(path)
# If superproject doesn't have a commit id for a project, then report an
# error event and continue as if do not use superproject is specified.
if projects_missing_commit_ids:
print('error: please file a bug using %s to report missing commit_ids for: %s' %
(self._manifest.contactinfo.bugurl, projects_missing_commit_ids), file=sys.stderr)
return None
msg = (f'error: please file a bug using {self._manifest.contactinfo.bugurl} '
f'to report missing commit_ids for: {projects_missing_commit_ids}')
print(msg, file=sys.stderr)
self._git_event_log.ErrorEvent(msg, '')
return UpdateProjectsResult(None, False)
for project in projects:
if not self._SkipUpdatingProjectRevisionId(project):
project.SetRevisionId(commit_ids.get(project.relpath))
manifest_path = self._WriteManfiestFile()
return manifest_path
return UpdateProjectsResult(manifest_path, False)

View File

@ -208,7 +208,8 @@ class _Repo(object):
repodir=self.repodir,
client=repo_client,
manifest=repo_client.manifest,
gitc_manifest=gitc_manifest)
gitc_manifest=gitc_manifest,
git_event_log=git_trace2_event_log)
except KeyError:
print("repo: '%s' is not a repo command. See 'repo help'." % name,
file=sys.stderr)

View File

@ -12,7 +12,6 @@
# See the License for the specific language governing permissions and
# limitations under the License.
import optparse
import os
import platform
import re
@ -97,9 +96,12 @@ to update the working directory files.
"""
superproject = git_superproject.Superproject(self.manifest,
self.repodir,
self.git_event_log,
quiet=opt.quiet)
if not superproject.Sync():
sync_result = superproject.Sync()
if not sync_result.success:
print('error: git update of superproject failed', file=sys.stderr)
if sync_result.fatal:
sys.exit(1)
def _SyncManifest(self, opt):

View File

@ -302,21 +302,25 @@ later is required to fix a server side protocol bug.
load_local_manifests: Whether to load local manifests.
Returns:
Returns path to the overriding manifest file.
Returns path to the overriding manifest file instead of None.
"""
superproject = git_superproject.Superproject(self.manifest,
self.repodir,
self.git_event_log,
quiet=opt.quiet)
all_projects = self.GetProjects(args,
missing_ok=True,
submodules_ok=opt.fetch_submodules)
manifest_path = superproject.UpdateProjectsRevisionId(all_projects)
if not manifest_path:
update_result = superproject.UpdateProjectsRevisionId(all_projects)
manifest_path = update_result.manifest_path
if manifest_path:
self._ReloadManifest(manifest_path, load_local_manifests)
else:
print('error: Update of revsionId from superproject has failed. '
'Please resync with --no-use-superproject option',
file=sys.stderr)
if update_result.fatal:
sys.exit(1)
self._ReloadManifest(manifest_path, load_local_manifests)
return manifest_path
def _FetchProjectList(self, opt, projects):
@ -961,7 +965,9 @@ later is required to fix a server side protocol bug.
load_local_manifests = not self.manifest.HasLocalManifests
if self._UseSuperproject(opt):
manifest_name = self._UpdateProjectsRevisionId(opt, args, load_local_manifests)
new_manifest_name = self._UpdateProjectsRevisionId(opt, args, load_local_manifests)
if not new_manifest_name:
manifest_name = new_manifest_name
if self.gitc_manifest:
gitc_manifest_projects = self.GetProjects(args,

View File

@ -14,6 +14,7 @@
"""Unittests for the git_superproject.py module."""
import json
import os
import platform
import tempfile
@ -21,6 +22,7 @@ import unittest
from unittest import mock
import git_superproject
import git_trace2_event_log
import manifest_xml
import platform_utils
from test_manifest_xml import sort_attributes
@ -29,6 +31,11 @@ from test_manifest_xml import sort_attributes
class SuperprojectTestCase(unittest.TestCase):
"""TestCase for the Superproject module."""
PARENT_SID_KEY = 'GIT_TRACE2_PARENT_SID'
PARENT_SID_VALUE = 'parent_sid'
SELF_SID_REGEX = r'repo-\d+T\d+Z-.*'
FULL_SID_REGEX = r'^%s/%s' % (PARENT_SID_VALUE, SELF_SID_REGEX)
def setUp(self):
"""Set up superproject every time."""
self.tempdir = tempfile.mkdtemp(prefix='repo_tests')
@ -38,6 +45,13 @@ class SuperprojectTestCase(unittest.TestCase):
os.mkdir(self.repodir)
self.platform = platform.system().lower()
# By default we initialize with the expected case where
# repo launches us (so GIT_TRACE2_PARENT_SID is set).
env = {
self.PARENT_SID_KEY: self.PARENT_SID_VALUE,
}
self.git_event_log = git_trace2_event_log.EventLog(env=env)
# The manifest parsing really wants a git repo currently.
gitdir = os.path.join(self.repodir, 'manifests.git')
os.mkdir(gitdir)
@ -54,7 +68,8 @@ class SuperprojectTestCase(unittest.TestCase):
<project path="art" name="platform/art" groups="notdefault,platform-""" + self.platform + """
" /></manifest>
""")
self._superproject = git_superproject.Superproject(manifest, self.repodir)
self._superproject = git_superproject.Superproject(manifest, self.repodir,
self.git_event_log)
def tearDown(self):
"""Tear down superproject every time."""
@ -66,14 +81,56 @@ class SuperprojectTestCase(unittest.TestCase):
fp.write(data)
return manifest_xml.XmlManifest(self.repodir, self.manifest_file)
def verifyCommonKeys(self, log_entry, expected_event_name, full_sid=True):
"""Helper function to verify common event log keys."""
self.assertIn('event', log_entry)
self.assertIn('sid', log_entry)
self.assertIn('thread', log_entry)
self.assertIn('time', log_entry)
# Do basic data format validation.
self.assertEqual(expected_event_name, log_entry['event'])
if full_sid:
self.assertRegex(log_entry['sid'], self.FULL_SID_REGEX)
else:
self.assertRegex(log_entry['sid'], self.SELF_SID_REGEX)
self.assertRegex(log_entry['time'], r'^\d+-\d+-\d+T\d+:\d+:\d+\.\d+Z$')
def readLog(self, log_path):
"""Helper function to read log data into a list."""
log_data = []
with open(log_path, mode='rb') as f:
for line in f:
log_data.append(json.loads(line))
return log_data
def verifyErrorEvent(self):
"""Helper to verify that error event is written."""
with tempfile.TemporaryDirectory(prefix='event_log_tests') as tempdir:
log_path = self.git_event_log.Write(path=tempdir)
self.log_data = self.readLog(log_path)
self.assertEqual(len(self.log_data), 2)
error_event = self.log_data[1]
self.verifyCommonKeys(self.log_data[0], expected_event_name='version')
self.verifyCommonKeys(error_event, expected_event_name='error')
# Check for 'error' event specific fields.
self.assertIn('msg', error_event)
self.assertIn('fmt', error_event)
def test_superproject_get_superproject_no_superproject(self):
"""Test with no url."""
manifest = self.getXmlManifest("""
<manifest>
</manifest>
""")
superproject = git_superproject.Superproject(manifest, self.repodir)
self.assertFalse(superproject.Sync())
superproject = git_superproject.Superproject(manifest, self.repodir, self.git_event_log)
# Test that exit condition is false when there is no superproject tag.
sync_result = superproject.Sync()
self.assertFalse(sync_result.success)
self.assertFalse(sync_result.fatal)
self.verifyErrorEvent()
def test_superproject_get_superproject_invalid_url(self):
"""Test with an invalid url."""
@ -84,8 +141,10 @@ class SuperprojectTestCase(unittest.TestCase):
<superproject name="superproject"/>
</manifest>
""")
superproject = git_superproject.Superproject(manifest, self.repodir)
self.assertFalse(superproject.Sync())
superproject = git_superproject.Superproject(manifest, self.repodir, self.git_event_log)
sync_result = superproject.Sync()
self.assertFalse(sync_result.success)
self.assertTrue(sync_result.fatal)
def test_superproject_get_superproject_invalid_branch(self):
"""Test with an invalid branch."""
@ -96,21 +155,28 @@ class SuperprojectTestCase(unittest.TestCase):
<superproject name="superproject"/>
</manifest>
""")
superproject = git_superproject.Superproject(manifest, self.repodir)
self._superproject = git_superproject.Superproject(manifest, self.repodir,
self.git_event_log)
with mock.patch.object(self._superproject, '_GetBranch', return_value='junk'):
self.assertFalse(superproject.Sync())
sync_result = self._superproject.Sync()
self.assertFalse(sync_result.success)
self.assertTrue(sync_result.fatal)
def test_superproject_get_superproject_mock_init(self):
"""Test with _Init failing."""
with mock.patch.object(self._superproject, '_Init', return_value=False):
self.assertFalse(self._superproject.Sync())
sync_result = self._superproject.Sync()
self.assertFalse(sync_result.success)
self.assertTrue(sync_result.fatal)
def test_superproject_get_superproject_mock_fetch(self):
"""Test with _Fetch failing."""
with mock.patch.object(self._superproject, '_Init', return_value=True):
os.mkdir(self._superproject._superproject_path)
with mock.patch.object(self._superproject, '_Fetch', return_value=False):
self.assertFalse(self._superproject.Sync())
sync_result = self._superproject.Sync()
self.assertFalse(sync_result.success)
self.assertTrue(sync_result.fatal)
def test_superproject_get_all_project_commit_ids_mock_ls_tree(self):
"""Test with LsTree being a mock."""
@ -122,12 +188,13 @@ class SuperprojectTestCase(unittest.TestCase):
with mock.patch.object(self._superproject, '_Init', return_value=True):
with mock.patch.object(self._superproject, '_Fetch', return_value=True):
with mock.patch.object(self._superproject, '_LsTree', return_value=data):
commit_ids = self._superproject._GetAllProjectsCommitIds()
self.assertEqual(commit_ids, {
commit_ids_result = self._superproject._GetAllProjectsCommitIds()
self.assertEqual(commit_ids_result.commit_ids, {
'art': '2c2724cb36cd5a9cec6c852c681efc3b7c6b86ea',
'bootable/recovery': 'e9d25da64d8d365dbba7c8ee00fe8c4473fe9a06',
'build/bazel': 'ade9b7a0d874e25fff4bf2552488825c6f111928'
})
self.assertFalse(commit_ids_result.fatal)
def test_superproject_write_manifest_file(self):
"""Test with writing manifest to a file after setting revisionId."""
@ -163,9 +230,10 @@ class SuperprojectTestCase(unittest.TestCase):
return_value=data):
# Create temporary directory so that it can write the file.
os.mkdir(self._superproject._superproject_path)
manifest_path = self._superproject.UpdateProjectsRevisionId(projects)
self.assertIsNotNone(manifest_path)
with open(manifest_path, 'r') as fp:
update_result = self._superproject.UpdateProjectsRevisionId(projects)
self.assertIsNotNone(update_result.manifest_path)
self.assertFalse(update_result.fatal)
with open(update_result.manifest_path, 'r') as fp:
manifest_xml_data = fp.read()
self.assertEqual(
sort_attributes(manifest_xml_data),
@ -178,6 +246,34 @@ class SuperprojectTestCase(unittest.TestCase):
'<superproject name="superproject"/>'
'</manifest>')
def test_superproject_update_project_revision_id_no_superproject_tag(self):
"""Test update of commit ids of a manifest without superproject tag."""
manifest = self.getXmlManifest("""
<manifest>
<remote name="default-remote" fetch="http://localhost" />
<default remote="default-remote" revision="refs/heads/main" />
<project name="test-name"/>
</manifest>
""")
self.maxDiff = None
self._superproject = git_superproject.Superproject(manifest, self.repodir,
self.git_event_log)
self.assertEqual(len(self._superproject._manifest.projects), 1)
projects = self._superproject._manifest.projects
project = projects[0]
project.SetRevisionId('ABCDEF')
update_result = self._superproject.UpdateProjectsRevisionId(projects)
self.assertIsNone(update_result.manifest_path)
self.assertFalse(update_result.fatal)
self.verifyErrorEvent()
self.assertEqual(
sort_attributes(manifest.ToXml().toxml()),
'<?xml version="1.0" ?><manifest>'
'<remote fetch="http://localhost" name="default-remote"/>'
'<default remote="default-remote" revision="refs/heads/main"/>'
'<project name="test-name" revision="ABCDEF"/>'
'</manifest>')
def test_superproject_update_project_revision_id_from_local_manifest_group(self):
"""Test update of commit ids of a manifest that have local manifest no superproject group."""
local_group = manifest_xml.LOCAL_MANIFEST_GROUP_PREFIX + ':local'
@ -194,7 +290,8 @@ class SuperprojectTestCase(unittest.TestCase):
" /></manifest>
""")
self.maxDiff = None
self._superproject = git_superproject.Superproject(manifest, self.repodir)
self._superproject = git_superproject.Superproject(manifest, self.repodir,
self.git_event_log)
self.assertEqual(len(self._superproject._manifest.projects), 2)
projects = self._superproject._manifest.projects
data = ('160000 commit 2c2724cb36cd5a9cec6c852c681efc3b7c6b86ea\tart\x00'
@ -206,9 +303,10 @@ class SuperprojectTestCase(unittest.TestCase):
return_value=data):
# Create temporary directory so that it can write the file.
os.mkdir(self._superproject._superproject_path)
manifest_path = self._superproject.UpdateProjectsRevisionId(projects)
self.assertIsNotNone(manifest_path)
with open(manifest_path, 'r') as fp:
update_result = self._superproject.UpdateProjectsRevisionId(projects)
self.assertIsNotNone(update_result.manifest_path)
self.assertFalse(update_result.fatal)
with open(update_result.manifest_path, 'r') as fp:
manifest_xml_data = fp.read()
# Verify platform/vendor/x's project revision hasn't changed.
self.assertEqual(