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# This module is part of GitPython and is released under the
# 3-Clause BSD License: https://opensource.org/license/bsd-3-clause/
from contextlib import ExitStack
from functools import partial
from pathlib import Path
from unittest import mock
import pytest
from git import Remote, Repo, RootModule, Submodule
from git.exc import GitCommandError
from test.lib import patch_git_config
from test.lib.fixtures import read_only_fixture, writable_fixture
def _commit_file(repo, content):
Path(repo.working_tree_dir, "file").write_text(content, encoding="utf-8")
repo.index.add(["file"])
return repo.index.commit("Write " + content, skip_hooks=True)
def _cached_remote_refs(repo):
return {ref.path: ref.commit.hexsha for remote in repo.remotes for ref in remote.refs}
def _configured_submodule_url(submodule):
return submodule.repo.git.config("get", "--file", ".gitmodules", f"submodule.{submodule.name}.url")
@pytest.fixture(scope="module")
def local_submodule_baseline():
return read_only_fixture("submodule-no-fetch.sh", "baseline", "none", "False", "False", "False")
@pytest.fixture
def local_submodule(request):
params = getattr(request.node, "callspec", None)
params = {} if params is None else params.params
# These URL-change fixtures require absolute URLs to private mutable sources.
with writable_fixture(
"submodule-no-fetch.sh",
request.node.originalname,
str(params.get("uninitialized_submodule", "none")),
str(params.get("to_latest_revision", False)),
str(params.get("change_branch", False)),
str(params.get("multiple_remotes", False)),
execute=True,
) as fixture, ExitStack() as handles, patch_git_config("protocol.file.allow", "always"):
root = fixture.path().resolve()
source = handles.enter_context(Repo(root / "source"))
parent = handles.enter_context(Repo(root / "parent"))
metadata = root / "parent/.git/modules/module"
module = handles.enter_context(Repo(metadata)) if metadata.exists() else None
yield parent.submodules[0], source, module
def test_local_submodule_source_is_isolated(local_submodule, local_submodule_baseline):
submodule, source, module = local_submodule
source_url = _configured_submodule_url(submodule)
assert submodule.url == module.remotes.origin.url == source_url
assert Path(source_url).samefile(source.working_tree_dir)
remote_only = _commit_file(source, "private")
with Repo(local_submodule_baseline / "source") as original:
assert original.head.commit != remote_only
assert Path(original.working_tree_dir, "file").read_text(encoding="utf-8") == "cached"
@pytest.fixture(params=["submodule", "root", "repo"])
def update_submodule(request, local_submodule):
submodule, _, _ = local_submodule
if request.param == "submodule":
return submodule.update
if request.param == "root":
update = RootModule(submodule.repo).update
else:
update = submodule.repo.submodule_update
return partial(update, previous_commit=submodule.repo.head.commit, recursive=False)
@pytest.fixture(params=["missing", "deinitialized"])
def uninitialized_submodule(request, local_submodule):
submodule, _, module = local_submodule
metadata = Path(submodule.repo.git_dir, "modules/module")
assert not submodule.module_exists()
assert metadata.is_dir() == (request.param == "deinitialized")
return submodule, metadata
@pytest.mark.parametrize("no_fetch", [None, False, True], ids=["default", "fetch", "no-fetch"])
def test_update_no_fetch_checks_out_cached_commit(local_submodule, update_submodule, no_fetch):
submodule, source, module = local_submodule
assert module.head.commit.binsha != submodule.binsha
options = {} if no_fetch is None else {"no_fetch": no_fetch}
with mock.patch.object(Remote, "fetch", autospec=True, side_effect=Remote.fetch) as fetch:
update_submodule(**options)
assert module.head.commit.binsha == submodule.binsha
assert Path(submodule.abspath, "file").read_text(encoding="utf-8") == "cached"
assert fetch.call_count == (0 if no_fetch else 2)
assert {call[0][0].name for call in fetch.call_args_list} == (set() if no_fetch else {"origin", "backup"})
def test_update_no_fetch_to_latest_revision_uses_cached_tip(local_submodule, update_submodule):
submodule, source, module = local_submodule
cached_tip = module.head.reference.tracking_branch().commit
remote_tip = source.head.commit
assert submodule.binsha != cached_tip.binsha != remote_tip.binsha
with mock.patch.object(Remote, "fetch", side_effect=AssertionError("Unexpected fetch")) as fetch:
update_submodule(no_fetch=True, to_latest_revision=True)
fetch.assert_not_called()
assert module.head.commit == cached_tip
assert module.head.reference.tracking_branch().commit == cached_tip
assert Path(submodule.abspath, "file").read_text(encoding="utf-8") == "cached"
def test_update_no_fetch_cannot_check_out_missing_commit(local_submodule, update_submodule):
submodule, source, module = local_submodule
cached_tip = module.head.commit
with mock.patch.object(Remote, "fetch", side_effect=AssertionError("Unexpected fetch")) as fetch:
with pytest.raises(GitCommandError, match="merge-base"):
update_submodule(no_fetch=True)
fetch.assert_not_called()
assert module.head.commit == cached_tip
assert module.head.reference.tracking_branch().commit == cached_tip
assert Path(submodule.abspath, "file").read_text(encoding="utf-8") == "cached"
@pytest.mark.parametrize("uninitialized_submodule", ["missing"], indirect=True)
@pytest.mark.parametrize("keep_going", [False, True], ids=["raise", "keep-going"])
def test_update_no_fetch_rejects_missing_submodule(uninitialized_submodule, update_submodule, keep_going, caplog):
submodule, metadata = uninitialized_submodule
parent_config = Path(submodule.repo.git_dir, "config").read_bytes()
with mock.patch.object(Remote, "fetch") as fetch, mock.patch.object(Submodule, "_clone_repo") as clone:
if keep_going:
update_submodule(no_fetch=True, keep_going=True)
assert "fetching is disabled" in caplog.text
else:
with pytest.raises(ValueError, match="fetching is disabled"):
update_submodule(no_fetch=True)
fetch.assert_not_called()
clone.assert_not_called()
assert not submodule.module_exists()
assert not Path(submodule.abspath, ".git").exists()
assert not metadata.exists()
assert Path(submodule.repo.git_dir, "config").read_bytes() == parent_config
@pytest.mark.parametrize(
"options",
[
pytest.param({"init": False}, id="init-false"),
pytest.param({"dry_run": True}, id="dry-run"),
],
)
def test_update_no_fetch_can_skip_uninitialized_submodule(uninitialized_submodule, update_submodule, options):
submodule, metadata = uninitialized_submodule
retained_metadata = metadata.is_dir()
parent_config = Path(submodule.repo.git_dir, "config").read_bytes()
with mock.patch.object(Remote, "fetch") as fetch, mock.patch.object(Submodule, "_clone_repo") as clone:
update_submodule(no_fetch=True, **options)
fetch.assert_not_called()
clone.assert_not_called()
assert not submodule.module_exists()
assert not Path(submodule.abspath, ".git").exists()
assert metadata.is_dir() == retained_metadata
assert Path(submodule.repo.git_dir, "config").read_bytes() == parent_config
@pytest.mark.parametrize("to_latest_revision", [False, True], ids=["gitlink", "cached-tip"])
@pytest.mark.parametrize("keep_going", [False, True], ids=["raise", "keep-going"])
def test_update_no_fetch_restores_deinitialized_submodule(
local_submodule, update_submodule, to_latest_revision, keep_going, caplog
):
submodule, source, module = local_submodule
tracking_branch = module.head.reference.tracking_branch()
cached_tip = tracking_branch.commit
branch_path = module.head.reference.path
cached_refs = _cached_remote_refs(module)
assert module.head.commit != cached_tip
if to_latest_revision:
assert submodule.binsha != cached_tip.binsha
metadata = Path(module.git_dir)
module.close()
assert not submodule.module_exists()
assert metadata.is_dir()
assert source.head.commit != cached_tip
with mock.patch.object(Remote, "fetch") as fetch, mock.patch.object(Submodule, "_clone_repo") as clone:
update_submodule(no_fetch=True, to_latest_revision=to_latest_revision, keep_going=keep_going)
fetch.assert_not_called()
clone.assert_not_called()
assert not caplog.records
assert submodule.module_exists()
assert Path(submodule.abspath, ".git").is_file()
with submodule.module() as restored:
assert Path(restored.git_dir).samefile(metadata)
assert restored.head.commit == cached_tip
assert restored.head.reference.path == branch_path
assert restored.head.reference.tracking_branch().path == tracking_branch.path
assert _cached_remote_refs(restored) == cached_refs
assert Path(submodule.abspath, "file").read_text(encoding="utf-8") == "cached"
assert not restored.is_dirty(untracked_files=True)
with submodule.repo.config_reader() as reader:
assert reader.get_value(f'submodule "{submodule.name}"', "url") == submodule.url
@pytest.mark.parametrize("no_fetch", [None, False], ids=["default", "fetch"])
def test_update_after_deinit_fetches_remote_tip(local_submodule, update_submodule, no_fetch):
submodule, source, module = local_submodule
metadata = Path(module.git_dir)
module.close()
remote_tip = source.head.commit
options = {} if no_fetch is None else {"no_fetch": no_fetch}
with mock.patch.object(Remote, "fetch", autospec=True, side_effect=Remote.fetch) as fetch:
with mock.patch.object(Submodule, "_clone_repo") as clone:
update_submodule(to_latest_revision=True, **options)
clone.assert_not_called()
fetch.assert_called_once()
assert fetch.call_args[0][0].name == "origin"
assert Path(fetch.call_args[0][0].repo.git_dir).samefile(metadata)
with submodule.module() as restored:
assert Path(restored.git_dir).samefile(metadata)
assert restored.head.commit == remote_tip
assert restored.head.reference.tracking_branch().commit == remote_tip
assert Path(submodule.abspath, "file").read_text(encoding="utf-8") == "remote-only"
@pytest.mark.parametrize("uninitialized_submodule", ["deinitialized"], indirect=True)
def test_update_no_fetch_preserves_nonempty_deinitialized_checkout(uninitialized_submodule, update_submodule):
submodule, metadata = uninitialized_submodule
checkout_file = Path(submodule.abspath, "file")
parent_config = Path(submodule.repo.git_dir, "config").read_bytes()
with mock.patch.object(Remote, "fetch") as fetch, mock.patch.object(Submodule, "_clone_repo") as clone:
with pytest.raises(OSError, match="does already exist and is non-empty"):
update_submodule(no_fetch=True)
fetch.assert_not_called()
clone.assert_not_called()
assert checkout_file.read_text(encoding="utf-8") == "user content"
assert not Path(submodule.abspath, ".git").exists()
assert metadata.is_dir()
assert Path(submodule.repo.git_dir, "config").read_bytes() == parent_config
@pytest.mark.parametrize("no_fetch", [False, True], ids=["fetch", "no-fetch"])
def test_update_no_fetch_is_recursive(local_submodule, update_submodule, no_fetch):
submodule, source, module = local_submodule
child = module.submodules[0]
with child.module() as nested:
cached_tip = source.commit("cached")
target = module.commit(submodule.hexsha)
with mock.patch.object(Remote, "fetch", autospec=True, side_effect=Remote.fetch) as fetch:
update_submodule(recursive=True, no_fetch=no_fetch)
assert module.head.commit == target
assert nested.head.commit == cached_tip
assert Path(child.abspath, "file").read_text(encoding="utf-8") == "cached"
assert fetch.call_count == (0 if no_fetch else 2)
assert {call[0][0].repo.git_dir for call in fetch.call_args_list} == (
set() if no_fetch else {module.git_dir, nested.git_dir}
)
@pytest.mark.parametrize("no_fetch", [False, True], ids=["fetch", "no-fetch"])
def test_root_update_no_fetch_on_branch_change(local_submodule, no_fetch):
submodule, source, module = local_submodule
branch_name = source.head.reference.name + "-other"
tracking_branch = module.remotes.origin.refs[branch_name]
previous = submodule.repo.commit("previous")
with mock.patch.object(Remote, "fetch", autospec=True, side_effect=Remote.fetch) as fetch:
RootModule(submodule.repo).update(previous_commit=previous, recursive=False, no_fetch=no_fetch)
assert module.head.reference.name == branch_name
assert module.head.reference.tracking_branch() == tracking_branch
assert module.head.commit.binsha == submodule.binsha
if no_fetch:
fetch.assert_not_called()
else:
assert fetch.called
@pytest.mark.parametrize("no_fetch", [False, True], ids=["fetch", "no-fetch"])
def test_root_update_no_fetch_on_url_change(local_submodule, no_fetch):
submodule, source, module = local_submodule
previous = submodule.repo.commit("previous")
branch_path = module.head.reference.path
tracking_branch = module.head.reference.tracking_branch()
cached_refs = _cached_remote_refs(module)
assert module.head.commit.binsha != submodule.binsha
with Repo(Path(source.working_tree_dir).with_name("mirror")) as mirror:
mirror_url = _configured_submodule_url(submodule)
assert Path(mirror_url).samefile(mirror.working_tree_dir)
with mock.patch.object(Remote, "fetch", autospec=True, side_effect=Remote.fetch) as fetch:
RootModule(submodule.repo).update(previous_commit=previous, recursive=False, no_fetch=no_fetch)
if no_fetch:
fetch.assert_not_called()
assert module.head.reference.path == branch_path
assert module.head.reference.tracking_branch() == tracking_branch
assert _cached_remote_refs(module) == cached_refs
else:
assert fetch.call_count == 2
assert {call[0][0].name for call in fetch.call_args_list} == {"origin"}
assert module.remotes.origin.url == mirror_url
assert {remote.name for remote in module.remotes} == {"origin"}
assert module.head.commit.binsha == submodule.binsha
assert Path(submodule.abspath, "file").read_text(encoding="utf-8") == "cached"
@pytest.mark.parametrize("change_branch", [False, True], ids=["same-branch", "branch-change"])
def test_root_update_no_fetch_url_change_uses_cached_tip(local_submodule, change_branch):
submodule, source, module = local_submodule
branch_name = "master-other" if change_branch else "master"
tracking_branch = module.remotes.origin.refs[branch_name]
cached_tip = tracking_branch.commit
cached_refs = _cached_remote_refs(module)
previous = submodule.repo.commit("previous")
assert submodule.binsha != cached_tip.binsha
with Repo(Path(source.working_tree_dir).with_name("mirror")) as mirror:
assert mirror.head.commit != cached_tip
mirror_url = _configured_submodule_url(submodule)
assert Path(mirror_url).samefile(mirror.working_tree_dir)
with mock.patch.object(Remote, "fetch", side_effect=AssertionError("Unexpected fetch")) as fetch:
RootModule(submodule.repo).update(
previous_commit=previous, recursive=False, no_fetch=True, to_latest_revision=True
)
fetch.assert_not_called()
assert module.remotes.origin.url == mirror_url
assert {remote.name for remote in module.remotes} == {"origin"}
assert _cached_remote_refs(module) == cached_refs
assert module.head.reference.name == branch_name
assert module.head.reference.tracking_branch() == tracking_branch
assert module.head.commit == cached_tip
assert Path(submodule.abspath, "file").read_text(encoding="utf-8") == "cached"
@pytest.mark.parametrize("multiple_remotes", [False, True], ids=["single-remote-fallback", "matching-remote"])
def test_root_update_no_fetch_selects_url_change_remote(local_submodule, multiple_remotes):
submodule, source, module = local_submodule
previous = submodule.repo.commit("previous")
tracking_branch = module.head.reference.tracking_branch()
cached_refs = _cached_remote_refs(module)
assert module.head.commit.binsha != submodule.binsha
with Repo(Path(source.working_tree_dir).with_name("mirror")) as mirror:
mirror_url = _configured_submodule_url(submodule)
assert Path(mirror_url).samefile(mirror.working_tree_dir)
expected_urls = {remote.name: remote.url for remote in module.remotes}
expected_urls["upstream"] = mirror_url
with mock.patch.object(Remote, "fetch", side_effect=AssertionError("Unexpected fetch")) as fetch:
RootModule(submodule.repo).update(previous_commit=previous, recursive=False, no_fetch=True)
fetch.assert_not_called()
assert {remote.name: remote.url for remote in module.remotes} == expected_urls
assert _cached_remote_refs(module) == cached_refs
assert module.head.reference.tracking_branch() == tracking_branch
assert module.head.commit.binsha == submodule.binsha
assert Path(submodule.abspath, "file").read_text(encoding="utf-8") == "cached"