def setUp(self):
super(ProtocolGraphWalkerEmptyTestCase, self).setUp()
self._repo = MemoryRepo.init_bare([], {})
backend = DictBackend({b'/': self._repo})
self._walker = ProtocolGraphWalker(
TestUploadPackHandler(backend, [b'/', b'host=lolcats'], TestProto()),
self._repo.object_store, self._repo.get_peeled)
def setUp(self):
super(GitImportProcessorTests, self).setUp()
self.repo = MemoryRepo()
try:
from dulwich.fastexport import GitImportProcessor
except ImportError:
raise SkipTest("python-fastimport not available")
self.processor = GitImportProcessor(self.repo)
def _test_backend(objects, refs=None, named_files=None):
if not refs:
refs = {}
if not named_files:
named_files = {}
repo = MemoryRepo.init_bare(objects, refs)
for path, contents in named_files.iteritems():
repo._put_named_file(path, contents)
return DictBackend({'/': repo})
def test_receive_pack(self):
commit = make_commit(id=ONE, parents=[], commit_time=111)
self.backend.repos["/"] = MemoryRepo.init_bare([commit], {"refs/heads/master": commit.id})
outf = BytesIO()
exitcode = self.serve_command(ReceivePackHandler, ["/"], BytesIO("0000"), outf)
outlines = outf.getvalue().splitlines()
self.assertEqual(2, len(outlines))
self.assertEqual("1111111111111111111111111111111111111111 refs/heads/master", outlines[0][4:].split("\x00")[0])
self.assertEqual("0000", outlines[-1])
self.assertEqual(0, exitcode)
def test_commit_config_identity_in_memoryrepo(self):
# commit falls back to the users' identity if it wasn't specified
r = MemoryRepo.init_bare([], {})
c = r.get_config()
c.set(("user",), "name", "Jelmer")
c.set(("user",), "email", "*****@*****.**")
commit_sha = r.do_commit("message", tree=objects.Tree().id)
self.assertEqual("Jelmer <*****@*****.**>", r[commit_sha].author)
self.assertEqual("Jelmer <*****@*****.**>", r[commit_sha].committer)
def setUp(self):
super(ProtocolGraphWalkerTestCase, self).setUp()
# Create the following commit tree:
# 3---5
# /
# 1---2---4
commits = [
make_commit(id=ONE, parents=[], commit_time=111),
make_commit(id=TWO, parents=[ONE], commit_time=222),
make_commit(id=THREE, parents=[ONE], commit_time=333),
make_commit(id=FOUR, parents=[TWO], commit_time=444),
make_commit(id=FIVE, parents=[THREE], commit_time=555),
]
self._repo = MemoryRepo.init_bare(commits, {})
backend = DictBackend({b'/': self._repo})
self._walker = ProtocolGraphWalker(
TestUploadPackHandler(backend, [b'/', b'host=lolcats'], TestProto()),
self._repo.object_store, self._repo.get_peeled)
def fetch_commit(url, sha):
repo = MemoryRepo()
repo.object_store = TreelessObjectStore()
client, path = get_transport_and_path(url)
client.fetch(path, repo)
return repo[sha.encode('ascii')]
def setUp(self):
super(UploadPackHandlerTestCase, self).setUp()
self._repo = MemoryRepo.init_bare([], {})
backend = DictBackend({'/': self._repo})
self._handler = UploadPackHandler(
backend, ['/', 'host=lolcathost'], TestProto())
def test_from_ref(self):
r = MemoryRepo()
c1, c2, c3 = build_commit_graph(r.object_store, [[1], [2, 1], [3, 1, 2]])
r.refs[b'refs/heads/foo'] = c1.id
self.assertEqual(r[c1.tree], parse_tree(r, b'foo'))
def test_commit_by_short_sha(self):
r = MemoryRepo()
[c1] = build_commit_graph(r.object_store, [[1]])
self.assertEqual(c1, parse_commit(r, c1.id[:10]))
def test_bad_repo_path(self):
repo = MemoryRepo.init_bare([], {})
backend = DictBackend({b'/': repo})
self.assertRaises(NotGitRepository,
lambda: backend.open_repository('/ups'))
def test_fetch_into_empty(self):
c = LocalGitClient()
t = MemoryRepo()
s = open_repo('a.git')
self.assertEquals(s.get_refs(), c.fetch(s.path, t))
def setUp(self):
super(ReceivePackHandlerTestCase, self).setUp()
self._repo = MemoryRepo.init_bare([], {})
backend = DictBackend({b'/': self._repo})
self._handler = ReceivePackHandler(
backend, [b'/', b'host=lolcathost'], TestProto())
def setUp(self):
super(UploadPackHandlerTestCase, self).setUp()
self._repo = MemoryRepo.init_bare([], {})
backend = DictBackend({'/': self._repo})
self._handler = UploadPackHandler(
backend, ['/', 'host=lolcathost'], TestProto())
def test_fetch_into_empty(self):
c = LocalGitClient()
t = MemoryRepo()
s = open_repo('a.git')
self.addCleanup(tear_down_repo, s)
self.assertEqual(s.get_refs(), c.fetch(s.path, t).refs)
def test_nonexistant(self):
repo = MemoryRepo.init_bare([], {})
backend = DictBackend({b'/': repo})
self.assertRaises(NotGitRepository,
backend.open_repository, "/does/not/exist/unless/foo")
class GitImportProcessorTests(TestCase):
"""Tests for the GitImportProcessor tests."""
def setUp(self):
super(GitImportProcessorTests, self).setUp()
self.repo = MemoryRepo()
try:
from dulwich.fastexport import GitImportProcessor
except ImportError:
raise SkipTest("python-fastimport not available")
self.processor = GitImportProcessor(self.repo)
def test_reset_handler(self):
from fastimport import commands
[c1] = build_commit_graph(self.repo.object_store, [[1]])
cmd = commands.ResetCommand(b"refs/heads/foo", c1.id)
self.processor.reset_handler(cmd)
self.assertEqual(c1.id, self.repo.get_refs()[b"refs/heads/foo"])
def test_commit_handler(self):
from fastimport import commands
cmd = commands.CommitCommand(b"refs/heads/foo", b"mrkr",
(b"Jelmer", b"*****@*****.**", 432432432.0, 3600),
(b"Jelmer", b"*****@*****.**", 432432432.0, 3600),
b"FOO", None, [], [])
self.processor.commit_handler(cmd)
commit = self.repo[self.processor.last_commit]
self.assertEqual(b"Jelmer <*****@*****.**>", commit.author)
self.assertEqual(b"Jelmer <*****@*****.**>", commit.committer)
self.assertEqual(b"FOO", commit.message)
self.assertEqual([], commit.parents)
self.assertEqual(432432432.0, commit.commit_time)
self.assertEqual(432432432.0, commit.author_time)
self.assertEqual(3600, commit.commit_timezone)
self.assertEqual(3600, commit.author_timezone)
self.assertEqual(commit, self.repo[b"refs/heads/foo"])
def test_import_stream(self):
markers = self.processor.import_stream(BytesIO(b"""blob
mark :1
data 11
text for a
commit refs/heads/master
mark :2
committer Joe Foo <*****@*****.**> 1288287382 +0000
data 20
<The commit message>
M 100644 :1 a
"""))
self.assertEqual(2, len(markers))
self.assertTrue(isinstance(self.repo[markers[b"1"]], Blob))
self.assertTrue(isinstance(self.repo[markers[b"2"]], Commit))
def test_file_add(self):
from fastimport import commands
cmd = commands.BlobCommand(b"23", b"data")
self.processor.blob_handler(cmd)
cmd = commands.CommitCommand(b"refs/heads/foo", b"mrkr",
(b"Jelmer", b"*****@*****.**", 432432432.0, 3600),
(b"Jelmer", b"*****@*****.**", 432432432.0, 3600),
b"FOO", None, [], [commands.FileModifyCommand(b"path", 0o100644, b":23", None)])
self.processor.commit_handler(cmd)
commit = self.repo[self.processor.last_commit]
self.assertEqual([
(b'path', 0o100644, b'6320cd248dd8aeaab759d5871f8781b5c0505172')],
self.repo[commit.tree].items())
def simple_commit(self):
from fastimport import commands
cmd = commands.BlobCommand(b"23", b"data")
self.processor.blob_handler(cmd)
cmd = commands.CommitCommand(b"refs/heads/foo", b"mrkr",
(b"Jelmer", b"*****@*****.**", 432432432.0, 3600),
(b"Jelmer", b"*****@*****.**", 432432432.0, 3600),
b"FOO", None, [], [commands.FileModifyCommand(b"path", 0o100644, b":23", None)])
self.processor.commit_handler(cmd)
commit = self.repo[self.processor.last_commit]
return commit
def make_file_commit(self, file_cmds):
"""Create a trivial commit with the specified file commands.
:param file_cmds: File commands to run.
:return: The created commit object
"""
from fastimport import commands
cmd = commands.CommitCommand(b"refs/heads/foo", b"mrkr",
(b"Jelmer", b"*****@*****.**", 432432432.0, 3600),
(b"Jelmer", b"*****@*****.**", 432432432.0, 3600),
b"FOO", None, [], file_cmds)
self.processor.commit_handler(cmd)
return self.repo[self.processor.last_commit]
def test_file_copy(self):
from fastimport import commands
self.simple_commit()
commit = self.make_file_commit([commands.FileCopyCommand(b"path", b"new_path")])
self.assertEqual([
(b'new_path', 0o100644, b'6320cd248dd8aeaab759d5871f8781b5c0505172'),
(b'path', 0o100644, b'6320cd248dd8aeaab759d5871f8781b5c0505172'),
], self.repo[commit.tree].items())
def test_file_move(self):
from fastimport import commands
self.simple_commit()
commit = self.make_file_commit([commands.FileRenameCommand(b"path", b"new_path")])
self.assertEqual([
(b'new_path', 0o100644, b'6320cd248dd8aeaab759d5871f8781b5c0505172'),
], self.repo[commit.tree].items())
def test_file_delete(self):
from fastimport import commands
self.simple_commit()
commit = self.make_file_commit([commands.FileDeleteCommand(b"path")])
self.assertEqual([], self.repo[commit.tree].items())
def test_file_deleteall(self):
from fastimport import commands
self.simple_commit()
commit = self.make_file_commit([commands.FileDeleteAllCommand()])
self.assertEqual([], self.repo[commit.tree].items())
def test_git_loader(scheduler_host, git_origin):
url = git_origin
print(f"Retrieve references available at {url}")
repo = MemoryRepo()
gitrefs = porcelain.fetch(repo, url).refs
print(f"Look for origin {url}")
# use quote_plus to prevent urljoin from messing with the 'http://' part of
# the url
origin = apiget(f"origin/{quote_plus(url)}/get")
assert origin["url"] == url
visit = apiget(f"origin/{quote_plus(url)}/visit/latest")
assert visit["status"] == "full"
print("Check every identified git ref has been loaded")
snapshot = apiget(f'snapshot/{visit["snapshot"]}')
print(f'snapshot has {len(snapshot["branches"])} branches')
branches = snapshot["branches"]
# check every fetched branch is present in the snapshot
for branch_name, rev in gitrefs.items():
# for tags, only check for final revision id
if branch_name.startswith(
b"refs/tags/") and not branch_name.endswith(b"^{}"):
continue
rev_desc = apiget(f"revision/{rev.decode()}")
assert rev_desc["type"] == "git"
tag_revision = {}
tag_release = {}
for tag, rev in gitrefs.items():
if tag.startswith(b"refs/tags/"):
tag_str = tag.decode()
rev_str = rev.decode()
if tag.endswith(b"^{}"):
tag_revision[tag_str[:-3]] = rev_str
else:
tag_release[tag_str] = rev_str
for tag, revision in tag_revision.items():
# check that every release tag listed in the snapshot is known by the
# archive and consistent
release_id = tag_release[tag]
release = apiget(f"release/{release_id}")
assert release["id"] == release_id
assert release["target_type"] == "revision"
assert release["target"] == revision
# and compare this with what git ls-remote reported
tag_desc = branches[tag]
assert tag_desc["target_type"] == "release"
assert tag_desc["target"] == release_id
print("Check every git object stored in the repository has been loaded")
for sha1 in repo.object_store:
obj = repo.get_object(sha1)
sha1_str = sha1.decode()
if obj.type_name == b"blob":
apiget(f"content/sha1_git:{sha1_str}")
elif obj.type_name == b"commit":
apiget(f"revision/{sha1_str}")
elif obj.type_name == b"tree":
apiget(f"directory/{sha1_str}")
elif obj.type_name == b"tag":
apiget(f"release/{sha1_str}")
def test_current_commit_is_none_if_repo_is_empty():
assert GitRepo(MemoryRepo()).current_commit is None
def test_set_description(self):
r = MemoryRepo.init_bare([], {})
description = b"Some description"
r.set_description(description)
self.assertEqual(description, r.get_description())
# This script creates a clone of a remote repository in local memory,
# then adds a single file and pushes the result back.
#
# Example usage:
# python examples/memoryrepo.py git+ssh://github.com/jelmer/testrepo
import stat
# import sys
remote_url='https://gitee.com/qgbcs/gt.git'
from dulwich import porcelain
from dulwich.objects import Blob
from dulwich.repo import MemoryRepo
local_repo = MemoryRepo()
local_repo.refs.set_symbolic_ref(b'HEAD', b'refs/heads/master')
print(local_repo.refs.as_dict())
porcelain.fetch(local_repo, remote_url)
local_repo[b'refs/heads/master'] = local_repo[b'refs/remotes/origin/master']
last_tree = local_repo[local_repo['HEAD'].tree]
new_blob = Blob.from_string(b'Some contents')
local_repo.object_store.add_object(new_blob)
last_tree.add(b'test', stat.S_IFREG, new_blob.id)
local_repo.object_store.add_object(last_tree)
local_repo.do_commit(
message=b'Add a file called \'test\'',
def test_create_memory(self):
repo = MemoryRepo.init_bare([], {})
self._check_repo_contents(repo, True)
def test_current_tree_should_be_new_if_repo_is_empty():
tree = GitRepo(MemoryRepo()).current_tree
assert tree is not None
assert list(tree) == []
class GitImportProcessorTests(TestCase):
"""Tests for the GitImportProcessor tests."""
def setUp(self):
super(GitImportProcessorTests, self).setUp()
self.repo = MemoryRepo()
try:
from dulwich.fastexport import GitImportProcessor
except ImportError:
raise SkipTest("python-fastimport not available")
self.processor = GitImportProcessor(self.repo)
def test_reset_handler(self):
from fastimport import commands
[c1] = build_commit_graph(self.repo.object_store, [[1]])
cmd = commands.ResetCommand(b"refs/heads/foo", c1.id)
self.processor.reset_handler(cmd)
self.assertEqual(c1.id, self.repo.get_refs()[b"refs/heads/foo"])
self.assertEqual(c1.id, self.processor.last_commit)
def test_reset_handler_marker(self):
from fastimport import commands
[c1, c2] = build_commit_graph(self.repo.object_store, [[1], [2]])
self.processor.markers[b'10'] = c1.id
cmd = commands.ResetCommand(b"refs/heads/foo", b':10')
self.processor.reset_handler(cmd)
self.assertEqual(c1.id, self.repo.get_refs()[b"refs/heads/foo"])
def test_reset_handler_default(self):
from fastimport import commands
[c1, c2] = build_commit_graph(self.repo.object_store, [[1], [2]])
cmd = commands.ResetCommand(b"refs/heads/foo", None)
self.processor.reset_handler(cmd)
self.assertEqual(ZERO_SHA, self.repo.get_refs()[b"refs/heads/foo"])
def test_commit_handler(self):
from fastimport import commands
cmd = commands.CommitCommand(
b"refs/heads/foo", b"mrkr",
(b"Jelmer", b"*****@*****.**", 432432432.0, 3600),
(b"Jelmer", b"*****@*****.**", 432432432.0, 3600), b"FOO", None,
[], [])
self.processor.commit_handler(cmd)
commit = self.repo[self.processor.last_commit]
self.assertEqual(b"Jelmer <*****@*****.**>", commit.author)
self.assertEqual(b"Jelmer <*****@*****.**>", commit.committer)
self.assertEqual(b"FOO", commit.message)
self.assertEqual([], commit.parents)
self.assertEqual(432432432.0, commit.commit_time)
self.assertEqual(432432432.0, commit.author_time)
self.assertEqual(3600, commit.commit_timezone)
self.assertEqual(3600, commit.author_timezone)
self.assertEqual(commit, self.repo[b"refs/heads/foo"])
def test_commit_handler_markers(self):
from fastimport import commands
[c1, c2, c3] = build_commit_graph(self.repo.object_store,
[[1], [2], [3]])
self.processor.markers[b'10'] = c1.id
self.processor.markers[b'42'] = c2.id
self.processor.markers[b'98'] = c3.id
cmd = commands.CommitCommand(
b"refs/heads/foo", b"mrkr",
(b"Jelmer", b"*****@*****.**", 432432432.0, 3600),
(b"Jelmer", b"*****@*****.**", 432432432.0, 3600), b"FOO",
b':10', [b':42', b':98'], [])
self.processor.commit_handler(cmd)
commit = self.repo[self.processor.last_commit]
self.assertEqual(c1.id, commit.parents[0])
self.assertEqual(c2.id, commit.parents[1])
self.assertEqual(c3.id, commit.parents[2])
def test_import_stream(self):
markers = self.processor.import_stream(
BytesIO(b"""blob
mark :1
data 11
text for a
commit refs/heads/master
mark :2
committer Joe Foo <*****@*****.**> 1288287382 +0000
data 20
<The commit message>
M 100644 :1 a
"""))
self.assertEqual(2, len(markers))
self.assertTrue(isinstance(self.repo[markers[b"1"]], Blob))
self.assertTrue(isinstance(self.repo[markers[b"2"]], Commit))
def test_file_add(self):
from fastimport import commands
cmd = commands.BlobCommand(b"23", b"data")
self.processor.blob_handler(cmd)
cmd = commands.CommitCommand(
b"refs/heads/foo", b"mrkr",
(b"Jelmer", b"*****@*****.**", 432432432.0, 3600),
(b"Jelmer", b"*****@*****.**", 432432432.0, 3600), b"FOO", None,
[], [commands.FileModifyCommand(b"path", 0o100644, b":23", None)])
self.processor.commit_handler(cmd)
commit = self.repo[self.processor.last_commit]
self.assertEqual(
[(b'path', 0o100644, b'6320cd248dd8aeaab759d5871f8781b5c0505172')],
self.repo[commit.tree].items())
def simple_commit(self):
from fastimport import commands
cmd = commands.BlobCommand(b"23", b"data")
self.processor.blob_handler(cmd)
cmd = commands.CommitCommand(
b"refs/heads/foo", b"mrkr",
(b"Jelmer", b"*****@*****.**", 432432432.0, 3600),
(b"Jelmer", b"*****@*****.**", 432432432.0, 3600), b"FOO", None,
[], [commands.FileModifyCommand(b"path", 0o100644, b":23", None)])
self.processor.commit_handler(cmd)
commit = self.repo[self.processor.last_commit]
return commit
def make_file_commit(self, file_cmds):
"""Create a trivial commit with the specified file commands.
:param file_cmds: File commands to run.
:return: The created commit object
"""
from fastimport import commands
cmd = commands.CommitCommand(
b"refs/heads/foo", b"mrkr",
(b"Jelmer", b"*****@*****.**", 432432432.0, 3600),
(b"Jelmer", b"*****@*****.**", 432432432.0, 3600), b"FOO", None,
[], file_cmds)
self.processor.commit_handler(cmd)
return self.repo[self.processor.last_commit]
def test_file_copy(self):
from fastimport import commands
self.simple_commit()
commit = self.make_file_commit(
[commands.FileCopyCommand(b"path", b"new_path")])
self.assertEqual([
(b'new_path', 0o100644,
b'6320cd248dd8aeaab759d5871f8781b5c0505172'),
(b'path', 0o100644, b'6320cd248dd8aeaab759d5871f8781b5c0505172'),
], self.repo[commit.tree].items())
def test_file_move(self):
from fastimport import commands
self.simple_commit()
commit = self.make_file_commit(
[commands.FileRenameCommand(b"path", b"new_path")])
self.assertEqual([
(b'new_path', 0o100644,
b'6320cd248dd8aeaab759d5871f8781b5c0505172'),
], self.repo[commit.tree].items())
def test_file_delete(self):
from fastimport import commands
self.simple_commit()
commit = self.make_file_commit([commands.FileDeleteCommand(b"path")])
self.assertEqual([], self.repo[commit.tree].items())
def test_file_deleteall(self):
from fastimport import commands
self.simple_commit()
commit = self.make_file_commit([commands.FileDeleteAllCommand()])
self.assertEqual([], self.repo[commit.tree].items())
def test_set_description(self):
r = MemoryRepo.init_bare([], {})
description = b"Some description"
r.set_description(description)
self.assertEqual(description, r.get_description())
def test_bad_repo_path(self):
repo = MemoryRepo.init_bare([], {})
backend = DictBackend({b'/': repo})
self.assertRaises(NotGitRepository,
lambda: backend.open_repository('/ups'))
def setup(self):
self.teardown()
index = RamStorage().create_index(DateRevisionHybrid())
repo = MemoryRepo()
store = repo.object_store
sample_page_rst_blob, sample_page_with_attachments_rst_blob = (
Blob.from_string(_SAMPLE_PAGE_RST),
Blob.from_string(_SAMPLE_PAGE_WITH_ATTACHMENTS_RST),
)
store.add_object(sample_page_rst_blob)
store.add_object(sample_page_with_attachments_rst_blob)
sample_page_tree = Tree()
sample_page_tree.add('page.rst', 0100644, sample_page_rst_blob.id)
store.add_object(sample_page_tree)
sample_page_with_attachments_tree = Tree()
sample_page_with_attachments_tree.add(
'page.rst', 0100644, sample_page_with_attachments_rst_blob.id
)
store.add_object(sample_page_with_attachments_tree)
pages_tree = Tree()
pages_tree.add('sample-page', 0100755, sample_page_tree.id)
pages_tree.add(
'sample-page-with-attachments',
0100755,
sample_page_with_attachments_tree.id,
)
store.add_object(pages_tree)
root_tree = Tree()
root_tree.add('page', 0100755, pages_tree.id)
store.add_object(root_tree)
c = Commit()
c.tree = root_tree.id
c.message = 'initial commit'
c.committer = 'test committer <test@committer>'
c.author = 'test author <test@author>'
c.commit_time = 1174773719
c.author_time = 1174773719
c.commit_timezone = 0
c.author_timezone = 0
store.add_object(c)
repo.refs['refs/heads/master'] = c.id
repo.refs['HEAD'] = c.id
build_hybrid_index(
index=index,
repo=repo,
ref='HEAD',
)
searcher = index.searcher()
self.index = index
self.searcher = searcher
self.api = GitPages(repo, searcher)
self.repo = repo
self.root_tree = root_tree
self.pages_tree = pages_tree
self.sample_page_tree = sample_page_tree
self.sample_page_rst_blob = sample_page_rst_blob
def test_create_memory(self):
repo = MemoryRepo.init_bare([], {})
self._check_repo_contents(repo, True)
def test_from_commit(self):
r = MemoryRepo()
c1, c2, c3 = build_commit_graph(r.object_store,
[[1], [2, 1], [3, 1, 2]])
self.assertEqual(r[c1.tree], parse_tree(r, c1.id))
self.assertEqual(r[c1.tree], parse_tree(r, c1.tree))
def test_nonexistant(self):
repo = MemoryRepo.init_bare([], {})
backend = DictBackend({b'/': repo})
self.assertRaises(NotGitRepository,
backend.open_repository, "/does/not/exist/unless/foo")
def test_blob_by_sha(self):
r = MemoryRepo()
b = Blob.from_string(b"Blah")
r.object_store.add_object(b)
self.assertEqual(b, parse_object(r, b.id))
def setUp(self):
super(ReceivePackHandlerTestCase, self).setUp()
self._repo = MemoryRepo.init_bare([], {})
backend = DictBackend({b'/': self._repo})
self._handler = ReceivePackHandler(
backend, [b'/', b'host=lolcathost'], TestProto())
def test_commit_by_sha(self):
r = MemoryRepo()
c1, c2, c3 = build_commit_graph(r.object_store,
[[1], [2, 1], [3, 1, 2]])
self.assertEqual([c1], list(parse_commit_range(r, c1.id)))
def test_nonexistent(self):
r = MemoryRepo()
self.assertRaises(KeyError, parse_commit, r, "thisdoesnotexist")
#!/usr/bin/python
# This script creates a clone of a remote repository in local memory,
# then adds a single file and pushes the result back.
#
# Example usage:
# python examples/memoryrepo.py git+ssh://github.com/jelmer/testrepo
import stat
import sys
from dulwich import porcelain
from dulwich.objects import Blob
from dulwich.repo import MemoryRepo
local_repo = MemoryRepo()
local_repo.refs.set_symbolic_ref(b'HEAD', b'refs/heads/master')
print(local_repo.refs.as_dict())
porcelain.fetch(local_repo, sys.argv[1])
local_repo['refs/heads/master'] = local_repo['refs/remotes/origin/master']
last_tree = local_repo[local_repo['HEAD'].tree]
new_blob = Blob.from_string(b'Some contents')
local_repo.object_store.add_object(new_blob)
last_tree.add(b'test', stat.S_IFREG, new_blob.id)
local_repo.object_store.add_object(last_tree)
local_repo.do_commit(
message=b'Add a file called \'test\'',
ref=b'refs/heads/master',
tree=last_tree.id)