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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/

import gc

import os

import os.path as osp

from pathlib import Path

import shutil

import sys

from types import SimpleNamespace

from unittest import mock, skipUnless

import pytest

import git

from git.cmd import Git

from git.config import GitConfigParser, cp

from git.exc import (

GitCommandError,

InvalidGitRepositoryError,

RepositoryDirtyError,

UnsafeOptionError,

UnsafeProtocolError,

)

from git.objects.submodule.base import Submodule

from git.objects.submodule.root import RootModule, RootUpdateProgress

from git.objects.submodule.util import resolve_relative_url

from git.repo.fun import find_submodule_git_dir, touch

from git.util import cwd, join_path_native, to_native_path_linux

from test.lib import TestBase, patch_git_config, with_rw_repo, PathLikeMock

from test.lib.fixtures import fixture_repo, read_only_fixture, writable_fixture

@pytest.mark.parametrize("state", ["unborn", "untracked", "detached"])

@pytest.mark.parametrize("remote", [None, ".", "origin"], ids=["working-tree", "local-origin", "origin"])

@patch_git_config("protocol.file.allow", "always")

def test_add_relative_submodule_without_tracking_remote(state, remote):

# Origins and submodule URLs refer to this private fixture's absolute paths.

with writable_fixture("submodule-relative.sh", "add", state, remote, execute=True) as fixture:

root = fixture.path().resolve()

with git.Repo(root / "parent") as parent, git.Repo(root / (root / "source-path").read_text()) as source:

submodule = parent.create_submodule("module", "module", "./source")

assert submodule.url == "./source"

with submodule.module() as module:

assert module.head.commit == source.head.commit

assert Path(module.remotes.origin.url).samefile(source.working_tree_dir)

parent.index.commit("Add submodule")

submodule.remove(configuration=False)

submodule.update(init=True)

with submodule.module() as module:

assert module.head.commit == source.head.commit

assert Path(module.remotes.origin.url).samefile(source.working_tree_dir)

@pytest.mark.parametrize("url", ["./source", "../source", "./../source"])

def test_add_preserves_relative_url_on_cygwin(url):

with writable_fixture("submodule-relative.sh", "cygwin") as fixture:

root = fixture.path().resolve()

with git.Repo(root / "parent") as parent, git.Repo(root / "source") as source:

with mock.patch.object(Submodule, "_clone_repo", return_value=source):

with mock.patch.object(Git, "is_cygwin", return_value=True):

submodule = parent.create_submodule("module", "module", url, no_checkout=True)

assert submodule.url == url

with submodule.config_reader() as reader:

assert reader.get_value("url") == url

with parent.config_reader() as reader:

assert reader.get_value('submodule "module"', "url") == url

@patch_git_config("protocol.file.allow", "always")

def test_update_resolves_local_relative_remote_once():

with writable_fixture("submodule-relative.sh", "local-remote") as fixture:

root = fixture.path().resolve()

with git.Repo(root / "parent") as parent, git.Repo(root / "repos" / "child.git") as source:

submodule = Submodule(

parent,

source.head.commit.binsha,

name="module",

path="module",

url="../child.git",

branch_path="refs/heads/master",

)

submodule.update(init=True)

with submodule.module() as module:

assert module.head.commit == source.head.commit

assert Path(module.remotes.origin.url).samefile(source.working_tree_dir)

module.remotes.origin.fetch()

@pytest.mark.parametrize("no_fetch", [False, True])

@pytest.mark.parametrize("scenario", ["root-anchor", "root-single"])

@patch_git_config("protocol.file.allow", "always")

def test_root_update_resolves_relative_remote_url(scenario, no_fetch):

# Module origins and .gitmodules URLs contain this private fixture's absolute paths.

with writable_fixture("submodule-relative.sh", scenario, execute=True) as fixture:

root = fixture.path().resolve()

with git.Repo(root / "parent") as parent, git.Repo(

root / (root / "replacement-path").read_text()

) as replacement:

previous = (root / "previous").read_text().strip()

RootModule(parent).update(previous_commit=previous, no_fetch=no_fetch)

with parent.submodules[0].module() as module:

assert Path(module.remotes.origin.url).samefile(replacement.working_tree_dir)

assert module.head.commit == replacement.head.commit

module.remotes.origin.fetch()

@pytest.mark.parametrize("dry_run", [False, True])

def test_root_update_skips_old_url_resolution_when_remote_matches(dry_run):

# The matching remote and .gitmodules URL refer to this private fixture's source.

with writable_fixture("submodule-relative.sh", "root-matches", execute=True) as fixture:

root = fixture.path().resolve()

with git.Repo(root / "parent") as parent, git.Repo(root / "source") as source:

previous = (root / "previous").read_text().strip()

resolve_url = Submodule._resolved_url

with parent.submodules[0].module() as module:

original_url = module.remotes.origin.url

assert Path(original_url).samefile(source.working_tree_dir)

def resolve_current_url(sm):

assert sm.url != "../source", "Previous URL does not need resolving"

return resolve_url(sm)

with mock.patch.object(Submodule, "_resolved_url", autospec=True, side_effect=resolve_current_url):

RootModule(parent).update(previous_commit=previous, no_fetch=True, dry_run=dry_run)

with parent.submodules[0].module() as module:

assert module.remotes.origin.url == original_url

assert Path(module.remotes.origin.url).samefile(source.working_tree_dir)

assert module.head.commit == source.head.commit

@patch_git_config("protocol.file.allow", "user")

def test_update_applies_git_transport_policy_to_gitmodules_url(monkeypatch):

monkeypatch.setenv("GIT_PROTOCOL_FROM_USER", "1")

# The cloned origins and .gitmodules URLs point to this private source.

with writable_fixture("submodule-transport.sh", "update", execute=True) as fixture:

root = fixture.path().resolve()

with git.Repo(root / "source") as source, git.Repo(root / "clone") as clone, git.Repo(

root / "baseline"

) as baseline:

submodule = clone.submodules[0]

with pytest.raises(GitCommandError, match="transport 'file' not allowed"):

baseline.git.submodule("update", "--init")

assert not Path(baseline.working_tree_dir, "module", ".git").exists()

with pytest.raises(GitCommandError, match="transport 'file' not allowed"):

submodule.update(init=True)

assert not submodule.module_exists()

with patch_git_config("protocol.file.allow", "always"):

baseline.git.submodule("update", "--init")

submodule.update(init=True)

with submodule.module() as module, git.Repo(root / "baseline" / "module") as baseline_module:

assert module.head.commit.hexsha == baseline_module.git.rev_parse("HEAD") == source.head.commit.hexsha

source.index.commit("Second commit", skip_hooks=True)

with pytest.raises(GitCommandError, match="transport 'file' not allowed"):

baseline.git.submodule("update", "--remote")

with pytest.raises(GitCommandError, match="transport 'file' not allowed"):

submodule.update(to_latest_revision=True)

assert module.head.commit.hexsha == baseline_module.git.rev_parse("HEAD") != source.head.commit.hexsha

with patch_git_config("protocol.file.allow", "always"):

baseline.git.submodule("update", "--remote")

submodule.update(to_latest_revision=True, allow_unsafe_protocols=True)

assert module.head.commit.hexsha == baseline_module.git.rev_parse("HEAD") == source.head.commit.hexsha

@patch_git_config("protocol.file.allow", "user")

def test_root_update_applies_git_transport_policy_to_changed_url(monkeypatch):

monkeypatch.setenv("GIT_PROTOCOL_FROM_USER", "1")

# The submodule URLs point to this private source and replacement.

with writable_fixture("submodule-transport.sh", "changed-url", execute=True) as fixture:

root = fixture.path().resolve()

with git.Repo(root / "source") as source, git.Repo(root / "parent") as parent, git.Repo(

root / "baseline"

) as baseline, git.Repo(root / "baseline" / "module") as baseline_module:

submodule = parent.submodules[0]

previous = (root / "previous").read_text().strip()

# A rejected fetch preserves the original remote and checked-out commit.

with baseline_module.git.custom_environment(GIT_PROTOCOL_FROM_USER="0"):

with pytest.raises(GitCommandError, match="transport 'file' not allowed"):

baseline_module.git.fetch(str(root / "replacement"))

assert Path(baseline_module.remotes.origin.url).samefile(source.working_tree_dir)

assert baseline_module.git.rev_parse("HEAD") == source.head.commit.hexsha

baseline.git.submodule("sync")

with pytest.raises(GitCommandError, match="transport 'file' not allowed"):

baseline.git.submodule("update", "--remote")

with pytest.raises(GitCommandError, match="transport 'file' not allowed"):

RootModule(parent).update(previous_commit=previous)

with submodule.module() as module:

assert Path(module.remotes.origin.url).samefile(source.working_tree_dir)

assert module.head.commit.hexsha == baseline_module.git.rev_parse("HEAD") == source.head.commit.hexsha

@pytest.mark.parametrize(

"scenario,name",

[

("plain", "module"),

("dollar", "$GITPYTHON_TEST_SECRET"),

("braced-dollar", "prefix-${GITPYTHON_TEST_SECRET}-suffix"),

("percent", "%GITPYTHON_TEST_SECRET%"),

)

@patch_git_config("protocol.file.allow", "always")

def test_submodule_update_preserves_literal_name(monkeypatch, caplog, scenario, name):

monkeypatch.setenv("GITPYTHON_TEST_SECRET", "sensitive-value")

caplog.set_level("DEBUG", logger="git.cmd")

# Cloned origins and submodule URLs refer to this private fixture's absolute paths.

with writable_fixture("submodule-special.sh", "literal-name", scenario, execute=True) as fixture:

with git.Repo(fixture.path().resolve() / "source") as source, git.Repo(

fixture.path().resolve() / "clone"

) as clone:

assert clone.git.config("--file", ".gitmodules", f"submodule.{name}.path") == "module"

clone.submodule_update(init=True, recursive=True)

modules_dir = Path(clone.git_dir, "modules")

assert {path.name for path in modules_dir.iterdir()} == {name}

# Exercise relative gitfile conversion on every platform.

with mock.patch.object(Git, "is_cygwin", return_value=True):

resolved_git_dir = find_submodule_git_dir(Path(clone.working_tree_dir, "module", ".git"))

assert resolved_git_dir is not None

assert (modules_dir / name).samefile(resolved_git_dir)

with clone.submodules[0].module() as module:

assert (modules_dir / name).samefile(module.git_dir)

assert module.head.commit == source.head.commit

assert "sensitive-value" not in caplog.text

def test_reconnect_preserves_existing_gitfile(movable_submodule, monkeypatch):

"""Reconnecting must not rename already-connected metadata onto itself."""

sm = movable_submodule

metadata = str(Path(sm.repo.git_dir, "modules", sm.name))

commit = sm.hexsha

moved = Path(sm.abspath).with_name("moved")

original = (moved / ".git").read_bytes()

execute = Git.execute

def reject_reinitialization(self, command, *args, **kwargs):

if "init" in command:

# Git for Windows can reject renaming a nonempty directory onto

# itself, even when both paths name the same existing repository.

raise GitCommandError(command, 128, "unable to move metadata to itself: Directory not empty")

return execute(self, command, *args, **kwargs)

monkeypatch.setattr(Git, "execute", reject_reinitialization)

Submodule._connect_module(moved, metadata)

assert (moved / ".git").read_bytes() == original

with git.Repo(moved) as reopened:

assert Path(reopened.git_dir).samefile(metadata)

assert Path(reopened.working_tree_dir).samefile(moved)

assert reopened.head.commit.hexsha == commit

assert (moved / "file").read_text() == "content"

def test_reconnect_validates_connected_metadata(movable_submodule):

sm = movable_submodule

metadata = Path(sm.repo.git_dir, "modules", sm.name)

config = metadata / "config"

before = config.read_bytes()

with pytest.raises(GitCommandError):

Submodule._connect_module(sm.abspath, str(metadata))

assert config.read_bytes() == before

@pytest.mark.parametrize("object_format", ["sha1", "sha256"])

@pytest.mark.parametrize("ref_format", ["files", "reftable"])

def test_submodule_cli_lifecycle(monkeypatch, object_format, ref_format):

"""Git owns submodule storage throughout add, move, reconnect, and removal."""

monkeypatch.setenv("GIT_AUTHOR_NAME", "Test")

monkeypatch.setenv("GIT_AUTHOR_EMAIL", "test@example.com")

monkeypatch.setenv("GIT_COMMITTER_NAME", "Test")

monkeypatch.setenv("GIT_COMMITTER_EMAIL", "test@example.com")

with writable_fixture("submodule-special.sh", "lifecycle", object_format, ref_format) as fixture:

with git.Repo(fixture.path().resolve() / "source") as source, git.Repo(

fixture.path().resolve() / "parent"

) as parent:

commit = source.head.commit

module = parent.create_submodule("logical-name", "module", source.working_tree_dir)

with module.module() as child:

if child.git.rev_parse("--show-ref-format") != ref_format:

child.git.refs("migrate", "--ref-format=" + ref_format)

parent.index.commit("Add submodule", skip_hooks=True)

module.move("moved")

parent.index.commit("Move submodule", skip_hooks=True)

assert module.name == "logical-name"

module.deinit(force=True)

module.update(init=True, no_fetch=True)

with module.module() as child:

assert child.head.commit == commit

assert not child.is_dirty(untracked_files=True)

metadata = Path(child.git_dir)

module.remove(force=True)

assert not Path(parent.working_tree_dir, "moved").exists()

assert metadata.is_dir()

assert not parent.submodules

@pytest.mark.skipif(sys.platform != "win32", reason="Windows locks files against directory renames")

@pytest.mark.parametrize("use_short_path", [False, True])

def test_submodule_reconnect_with_open_metadata_file(use_short_path):

# The gitfile must point to this fixture's final metadata directory.

with writable_fixture("submodule-special.sh", "open-metadata", execute=True) as fixture:

root = fixture.path().resolve()

if use_short_path:

import ctypes

buffer = ctypes.create_unicode_buffer(32768)

if not ctypes.windll.kernel32.GetShortPathNameW(str(root), buffer, len(buffer)):

raise ctypes.WinError()

if buffer.value == str(root):

pytest.skip("This filesystem does not provide Windows 8.3 path aliases")

root = Path(buffer.value)

assert root.samefile(fixture.path())

checkout = root / "checkout"

metadata = fixture.path().resolve() / "metadata"

with git.Repo(checkout) as repo:

# Like a retained pack mapping, this open file prevents renaming metadata.

object_file = metadata / "objects" / "held-open"

with object_file.open("rb"):

Submodule._connect_module(checkout, metadata)

assert Path(repo.git.rev_parse("--absolute-git-dir")).samefile(metadata)

with git.Repo(checkout) as reopened:

assert Path(reopened.working_tree_dir).samefile(checkout)

assert Path(reopened.git_dir).samefile(metadata)

@pytest.fixture(scope="module")

def submodule_source():

return read_only_fixture("submodule-source.sh") / "source"

@pytest.fixture(scope="module")

def movable_submodule_baseline(submodule_source):

def prepare(name):

return read_only_fixture("submodule-layout.sh", str(submodule_source), name) / "parent"

return prepare

@pytest.fixture

def movable_submodule(request, submodule_source):

arguments = [str(submodule_source), getattr(request, "param", "logical-name")]

if request.node.originalname == "test_reconnect_preserves_existing_gitfile":

arguments.extend(["reconnect-moved"])

elif request.node.originalname == "test_reconnect_validates_connected_metadata":

arguments.extend(["unknown-extension"])

elif request.node.originalname == "test_update_closes_checkout_processes_retained_by_logging":

arguments.extend(["logging", request.node.callspec.params["operation"]])

with fixture_repo(

"submodule-layout.sh",

*arguments,

write=True,

subdir="parent",

) as parent:

yield parent.submodules[0]

@pytest.fixture

def configured_submodule(request, submodule_source):

params = getattr(request.node, "callspec", None)

params = {} if params is None else params.params

# These scenarios intentionally point symlinks at fixture-local absolute paths.

with fixture_repo(

"submodule-symlinks.sh",

str(submodule_source),

getattr(request, "param", "logical-name"),

request.node.originalname,

params.get("kind", params.get("link_kind", "none")),

str(params.get("dangling", False)),

params.get("operation", "none"),

str(params.get("relative_target", False)),

write=True,

execute=True,

subdir="parent",

) as parent:

if params.get("link_kind") == "gitmodules":

with git.Repo(submodule_source) as source:

yield Submodule(

parent, source.head.commit.binsha, name="logical-name", path="module", url=str(submodule_source)

)

else:

yield parent.submodules[0]

def test_movable_submodule_copies_are_isolated(movable_submodule, movable_submodule_baseline):

sm = movable_submodule

baseline = movable_submodule_baseline(sm.name)

for relative in (".git/index", ".git/config", ".git/modules/logical-name/config", "module/file"):

copy = Path(sm.repo.working_tree_dir, relative)

original = baseline / relative

assert copy.read_bytes() == original.read_bytes()

assert not copy.samefile(original)

Path(sm.abspath, "file").write_text("changed", encoding="utf-8")

sm.repo.create_head("copy-only")

assert (baseline / "module/file").read_text(encoding="utf-8") == "content"

with git.Repo(baseline) as original:

assert "copy-only" not in original.heads

@pytest.fixture

def nested_metadata_submodule(submodule_source):

with fixture_repo(

"submodule-layout.sh", str(submodule_source), "logical-name", "nested", write=True, subdir="parent"

) as parent:

yield parent.submodules[0], parent.submodules[1]

@pytest.fixture

def existing_nested_metadata(submodule_source, state):

# The separate Git directory is recorded as an absolute path in the checkout.

with fixture_repo(

"submodule-layout.sh",

str(submodule_source),

"logical-name",

"existing-nested",

state,

write=True,

execute=True,

subdir="parent",

) as parent:

yield parent.submodules[0]

@pytest.fixture

def separate_metadata_submodule(submodule_source):

# The separate Git directory is recorded as an absolute path in the checkout.

with fixture_repo(

"submodule-layout.sh",

str(submodule_source),

"logical-name",

"separate",

write=True,

execute=True,

subdir="separate",

) as parent:

yield parent.submodules[0]

@pytest.fixture

def intermediate_symlink_submodule(submodule_source, target_kind):

with fixture_repo(

"submodule-layout.sh",

str(submodule_source),

"logical-name",

"intermediate-link",

target_kind,

write=True,

execute=True,

subdir="parent",

) as parent:

root = Path(parent.working_tree_dir).parent

target = root / "parent/target" if target_kind == "internal" else root / "outside"

yield parent.submodules[0], target

@pytest.fixture

def leaf_metadata_submodule(submodule_source, metadata_dir):

# Linked worktree metadata and its symlink contain fixture-local absolute paths.

with fixture_repo(

"submodule-layout.sh",

str(submodule_source),

"logical-name",

"leaf-metadata",

metadata_dir,

write=True,

execute=True,

subdir="worktree",

) as parent:

yield parent.submodules[0]

@pytest.fixture

def retained_metadata_submodule(submodule_source):

with fixture_repo(

"submodule-layout.sh", str(submodule_source), "logical-name", "retained", write=True, subdir="parent"

) as parent:

sm = parent.head.commit.tree["module"]

yield Submodule(parent, sm.binsha, name="logical-name", path="module", url=str(submodule_source))

def _move_snapshot(submodule):

"""Capture index, configuration, and path state to detect side effects of rejected moves."""

parent = submodule.repo

with submodule.module() as module:

config = Path(module.git_dir, "config").read_bytes()

return (

Path(parent.index.path).read_bytes(),

Path(parent.working_tree_dir, ".gitmodules").read_bytes(),

Path(submodule.abspath, ".git").read_bytes(),

config,

submodule.path,

)

@pytest.mark.parametrize(

"path",

[

".git/child",

".GiT/child",

"nested/.git/child",

"git~1/child",

"GIT~1 . /child",

".git. /child",

".git:stream/child",

".git::$INDEX_ALLOCATION/child",

"nested\\.git\\child",

"C:relative",

"nul\0name",

]

+ [

f".g{chr(codepoint)}it/child"

for codepoint in (*range(0x200C, 0x2010), *range(0x202A, 0x202F), *range(0x206A, 0x2070), 0xFEFF)

)

@pytest.mark.parametrize("operation", ["add", "clone", "update", "move", "move-module", "move-config"])

def test_submodule_rejects_unsafe_checkout_before_mutation(movable_submodule, path, operation):

sm = movable_submodule

root = Path(sm.repo.working_tree_dir)

before = _move_snapshot(sm)

paths = set(root.rglob("*"))

# Check the portable metadata aliases against Git's index validation as well.

if operation == "clone" and path not in ("C:relative", "nul\0name"):

with sm.repo.git.custom_environment(GIT_INDEX_FILE=str(root.parent / "validation-index")):

with patch_git_config("core.protectHFS", "true"), patch_git_config("core.protectNTFS", "true"):

with pytest.raises(GitCommandError):

sm.repo.git.update_index("--add", "--cacheinfo", f"160000,{sm.hexsha},{path}")

with mock.patch.object(git.Repo, "clone_from", side_effect=AssertionError("clone attempted")):

with pytest.raises(ValueError):

if operation == "add":

sm.repo.create_submodule("new", path, sm.url)

elif operation == "clone":

Submodule._clone_repo(sm.repo, sm.url, path, "new")

elif operation == "update":

Submodule(sm.repo, sm.binsha, name="new", path=path, url=sm.url).update(init=True)

else:

sm.move(path, configuration=operation != "move-module", module=operation != "move-config")

assert _move_snapshot(sm) == before

assert set(root.rglob("*")) == paths

def test_add_rejects_metadata_checkout_without_writing_files(movable_submodule):

sm = movable_submodule

before = _move_snapshot(sm)

with pytest.raises(ValueError, match="Git metadata"):

sm.repo.create_submodule("new", ".git/new", sm.url)

assert not Path(sm.repo.git_dir, "new").exists()

assert not Path(sm.repo.git_dir, "modules/new").exists()

assert _move_snapshot(sm) == before

@pytest.mark.parametrize("absolute_path", [False, True])

@pytest.mark.parametrize("metadata_name", ["metadata", "MeTaDaTa"])

@pytest.mark.parametrize("operation", ["add", "clone", "update", "move"])

def test_submodule_rejects_checkout_in_separate_metadata(

separate_metadata_submodule, absolute_path, metadata_name, operation

sm = separate_metadata_submodule

parent = sm.repo

root = Path(parent.working_tree_dir)

if not (root / metadata_name).is_dir():

pytest.skip("Requires a case-insensitive filesystem")

before = _move_snapshot(sm)

paths = set(root.rglob("*"))

path = root / metadata_name / "new" if absolute_path else f"{metadata_name}/new"

with pytest.raises(ValueError, match="Git metadata"):

if operation == "add":

parent.create_submodule("new", path, sm.url)

elif operation == "clone":

Submodule._clone_repo(parent, sm.url, path, "new")

elif operation == "update":

Submodule(parent, sm.binsha, name="new", path=path, url=sm.url).update(init=True)

else:

sm.move(path)

assert _move_snapshot(sm) == before

assert set(root.rglob("*")) == paths

@pytest.mark.parametrize("operation", ["add", "clone", "update"])

def test_submodule_rejects_nested_metadata_before_mutation(nested_metadata_submodule, operation):

sm, other = nested_metadata_submodule

root = Path(sm.repo.working_tree_dir)

before = _move_snapshot(sm), _move_snapshot(other)

paths = set(root.rglob("*"))

name = f"{sm.name}/child"

with pytest.raises(ValueError, match="inside.*Git directory"):

if operation == "add":

sm.repo.create_submodule(name, "new", sm.url)

elif operation == "clone":

Submodule._clone_repo(sm.repo, sm.url, "new", name)

elif operation == "update":

Submodule(sm.repo, sm.binsha, name=name, path="new", url=sm.url).update(init=True)

assert (_move_snapshot(sm), _move_snapshot(other)) == before

assert set(root.rglob("*")) == paths

@pytest.mark.parametrize("state", ["retained", "checked-out"])

def test_update_rejects_existing_nested_metadata(existing_nested_metadata, state):

sm = existing_nested_metadata

name = f"{sm.name}/child"

before = _move_snapshot(sm)

paths = set(Path(sm.repo.working_tree_dir).rglob("*"))

with pytest.raises(ValueError, match="inside.*Git directory"):

Submodule(sm.repo, sm.binsha, name=name, path="new", url=sm.url).update(init=True, no_fetch=True)

assert _move_snapshot(sm) == before

assert set(Path(sm.repo.working_tree_dir).rglob("*")) == paths

@pytest.mark.parametrize(

"path",

[

"CON",

"con.txt",

"CONIN$",

"conout$.txt",

"AUX .txt",

"PRN",

"NUL",

"COM9",

"LPT1",

"name:stream",

"space ",

"period.",

"line\nbreak",

"star*",

'quote"',

"question?",

"angle<",

"angle>",

"pipe|",

)

def test_submodule_rejects_windows_destination_names_before_mutation(movable_submodule, path):

sm = movable_submodule

before = _move_snapshot(sm)

paths = set(Path(sm.repo.working_tree_dir).rglob("*"))

with mock.patch("git.objects.submodule.base.sys", SimpleNamespace(platform="win32")):

with mock.patch.object(git.Repo, "clone_from", side_effect=AssertionError("clone attempted")):

with pytest.raises(ValueError):

sm.repo.create_submodule("new", f"nested/{path}", sm.url)

with pytest.raises(ValueError):

sm.repo.create_submodule(f"nested/{path}", "new", sm.url)

assert _move_snapshot(sm) == before

assert set(Path(sm.repo.working_tree_dir).rglob("*")) == paths

@pytest.mark.parametrize("path", ["nested/space ", "nested/period."])

def test_windows_destination_validation_precedes_normalization(path):

parent = SimpleNamespace(working_tree_dir=str(read_only_fixture("empty.sh")))

# Windows' GetFullPathName removes trailing spaces and periods.

with mock.patch("git.objects.submodule.base._to_relative_path", return_value=path.rstrip(" .")):

with mock.patch("git.objects.submodule.base.sys", SimpleNamespace(platform="win32")):

with pytest.raises(ValueError, match="Invalid submodule path on Windows"):

Submodule._to_relative_path(parent, path)

def test_submodule_move_keeps_its_own_metadata(movable_submodule):

sm = movable_submodule

name = sm.name

sm.move(f"{name}/child")

assert sm.name == name

assert Path(sm.abspath, "file").read_text() == "content"

with sm.module() as module:

assert Path(module.git_dir) == Path(sm.repo.git_dir, "modules", sm.name)

def test_clone_disables_metadata_that_becomes_nested(movable_submodule, monkeypatch):

sm = movable_submodule

clone_from = git.Repo.clone_from

ancestor = Path(sm.repo.git_dir, "modules/new")

prepared = read_only_fixture("empty.sh", "sha1", "files", "master", "true") / "repo"

def clone_and_create_ancestor(*args, **kwargs):

clone = clone_from(*args, **kwargs)

shutil.copytree(prepared, ancestor, dirs_exist_ok=True)

return clone

monkeypatch.setattr(git.Repo, "clone_from", clone_and_create_ancestor)

with pytest.raises(ValueError, match="inside.*Git directory"):

Submodule._clone_repo(sm.repo, sm.url, "new", "new/child")

assert not (ancestor / "child/HEAD").exists()

assert (ancestor / "HEAD").is_file()

@pytest.mark.parametrize("ref_format", ["files", "reftable"])

def test_readd_retained_submodule_without_checkout(submodule_source, ref_format):

with fixture_repo(

"submodule-layout.sh",

str(submodule_source),

"logical-name",

"readd-retained",

ref_format,

write=True,

subdir="parent",

) as parent:

root = Path(parent.working_tree_dir).parent

before = (root / "retained-refs").read_text().rstrip("\n")

branch = (root / "retained-branch").read_text().strip()

commit = (root / "retained-commit").read_text().strip()

url = (root / "retained-url").read_text().strip()

assert Path(url).samefile(submodule_source)

replacement = Submodule.add(parent, "logical-name", "module", url, branch=branch, no_checkout=True)

assert not Path(replacement.abspath, "file").exists()

with replacement.module() as module:

assert module.remotes.origin.url == url

assert module.git.for_each_ref("--format=%(refname) %(objectname)") == before

assert module.git.rev_parse("--show-ref-format") == ref_format

assert module.head.reference.name == branch

assert module.head.commit.hexsha == commit

@pytest.mark.parametrize("change", ["url", "clone-options", "branch", "depth"])

def test_readd_retained_submodule_rejects_incompatible_options(retained_metadata_submodule, change):

sm = retained_metadata_submodule

name, path, url = sm.name, sm.path, sm.url

root = Path(sm.repo.working_tree_dir)

def snapshot():

return {str(path.relative_to(root)): path.read_bytes() for path in root.rglob("*") if path.is_file()}

before = snapshot()

options = {"no_checkout": True}

if change == "url":

url += "-other"

elif change == "clone-options":

options["clone_multi_options"] = ["--filter=blob:none"]

elif change == "branch":

options["branch"] = "other"

else:

options["depth"] = 1

with pytest.raises(ValueError):

Submodule.add(sm.repo, name, path, url, **options)

assert not (root / path).exists()

assert snapshot() == before

@pytest.mark.parametrize("target_kind", ["relative", "absolute", "internal", "dangling"])

@pytest.mark.parametrize("configuration,module", [(True, True), (False, True), (True, False)])

@pytest.mark.parametrize("absolute_path", [False, True])

def test_move_rejects_intermediate_symlink(

intermediate_symlink_submodule, target_kind, configuration, module, absolute_path

"""Reject intermediate symlinks before changing repository state or their targets.

Cover relative and absolute destinations in every move mode, including links

within the repository and dangling links, which must also be rejected.

"""

submodule, target = intermediate_symlink_submodule

parent = submodule.repo

root = Path(parent.working_tree_dir)

tree = parent.git.write_tree()

before = _move_snapshot(submodule)

destination = root / "nested/link/new/moved" if absolute_path else "nested/link/new/moved"

with pytest.raises(ValueError, match="contains a symbolic link"):

submodule.move(destination, configuration=configuration, module=module)

assert _move_snapshot(submodule) == before

assert parent.git.write_tree() == tree

assert Path(submodule.abspath, "file").read_text(encoding="utf-8") == "content"

if target_kind == "dangling":

assert not target.exists()

else:

assert list(target.iterdir()) == []

@pytest.mark.parametrize("absolute_path", [False, True])

def test_move_normal_destination(movable_submodule, absolute_path):

"""Allow ordinary relative and absolute moves, and make a repeated move a no-op."""

submodule = movable_submodule

root = Path(submodule.repo.working_tree_dir)

destination = root / "nested/moved" if absolute_path else "nested/moved"

assert submodule.move(destination) is submodule

assert Path(submodule.abspath, "file").read_text(encoding="utf-8") == "content"

assert not (root / "module").exists()

assert submodule.path == "nested/moved"

submodule.repo.git.write_tree()

before = _move_snapshot(submodule)

assert submodule.move(destination) is submodule

assert _move_snapshot(submodule) == before

@pytest.mark.parametrize("metadata_dir", ["git_dir", "common_dir"])

@patch_git_config("protocol.file.allow", "always")

def test_move_rejects_leaf_symlink_to_metadata(leaf_metadata_submodule, metadata_dir):

submodule = leaf_metadata_submodule

parent = submodule.repo

root = Path(parent.working_tree_dir)

assert not osp.samefile(parent.git_dir, parent.common_dir)

target = Path(getattr(parent, metadata_dir))

destination = root / "destination"

before = _move_snapshot(submodule)

with pytest.raises(ValueError, match="Git metadata"):

submodule.move("destination", module=False)

assert _move_snapshot(submodule) == before

assert destination.is_symlink()

assert destination.samefile(target)

assert Path(submodule.abspath, "file").read_text(encoding="utf-8") == "content"

@pytest.mark.parametrize("kind", ["empty", "nonempty", "file", "dangling"])

def test_move_leaf_symlink_compatibility(configured_submodule, kind):

"""Preserve leaf-symlink replacement without modifying the external target.

Moving onto a link to an empty directory replaces the link; nonempty, file,

and dangling targets fail without changing repository state. Direct checkout

path access must still reject every leaf symlink.

"""

submodule = configured_submodule

root = Path(submodule.repo.working_tree_dir)

tmp_path = Path(configured_submodule.repo.working_tree_dir).parent

target = tmp_path / "outside"

destination = root / "destination"

with pytest.raises(ValueError, match="contains a symbolic link"):

Submodule(submodule.repo, Submodule.NULL_BIN_SHA, name="unused", path="destination").abspath

before = _move_snapshot(submodule)

if kind == "empty":

assert submodule.move("destination") is submodule

assert not destination.is_symlink()

assert (destination / "file").is_file()

assert list(target.iterdir()) == []

else:

with pytest.raises(OSError if kind == "dangling" else ValueError):

submodule.move("destination")

assert _move_snapshot(submodule) == before

assert destination.is_symlink()

if kind == "nonempty":

assert (target / "keep").read_text(encoding="utf-8") == "keep"

elif kind == "file":

assert target.read_text(encoding="utf-8") == "keep"

else:

assert not target.exists()

@pytest.mark.parametrize("leaf", [False, True])

@pytest.mark.parametrize("dangling", [False, True])

@pytest.mark.parametrize("operation", ["add", "clone"])

@pytest.mark.parametrize("gitfile", [False, True])

def test_clone_rejects_checkout_symlinks(configured_submodule, leaf, dangling, operation, gitfile):

"""Reject checkout symlinks before add or clone creates metadata or touches the target.

Cover leaf and intermediate links, including dangling targets, with both

embedded and separate Git directories.

"""

sm = configured_submodule

tmp_path = Path(configured_submodule.repo.working_tree_dir).parent

target = tmp_path / "outside"

path = "link" if leaf else "link/new/module"

before = _move_snapshot(sm)

with mock.patch.object(Submodule, "_need_gitfile_submodules", return_value=gitfile):

with pytest.raises(ValueError, match="contains a symbolic link"):

if operation == "add":

Submodule.add(sm.repo, "new", path, sm.url)

else:

Submodule._clone_repo(sm.repo, sm.url, path, "new")

assert _move_snapshot(sm) == before

assert not (Path(sm.repo.git_dir) / "modules/new").exists()

assert not target.exists() if dangling else list(target.iterdir()) == []

@pytest.mark.parametrize("link_kind", ["gitmodules", "checkout"])

@pytest.mark.parametrize("operation", ["update", "move", "remove"])

def test_submodule_rejects_checkout_and_gitmodules_symlinks(configured_submodule, link_kind, operation):

"""Reject operations on symlinked checkouts or .gitmodules without side effects.

Update, move, and forced removal must preserve the external target,

repository configuration, index, checkout, and any existing move destination.

"""

sm = configured_submodule

root = Path(sm.repo.working_tree_dir)

tmp_path = Path(configured_submodule.repo.working_tree_dir).parent

path = root / (".gitmodules" if link_kind == "gitmodules" else "module")

target = tmp_path / "outside"

before = (

{p.relative_to(target): p.read_bytes() for p in target.rglob("*") if p.is_file()}

if target.is_dir()

else target.read_bytes()

)

config = Path(sm.repo.git_dir, "config").read_bytes()

index = Path(sm.repo.index.path).read_bytes()

gitmodules = (root / ".gitmodules").read_bytes()

with pytest.raises(ValueError, match="contains a symbolic link"):

if operation == "update":

sm.update()

elif operation == "move":

sm.move("moved")

else:

sm.remove(force=True)

after = (

{p.relative_to(target): p.read_bytes() for p in target.rglob("*") if p.is_file()}

if target.is_dir()

else target.read_bytes()

)

assert after == before

assert Path(sm.repo.git_dir, "config").read_bytes() == config

assert Path(sm.repo.index.path).read_bytes() == index

assert (root / ".gitmodules").read_bytes() == gitmodules

assert (root / "module/file").read_text() == "content"

assert path.is_symlink()

assert (root / "moved").is_dir()

def test_add_closes_checkout_processes(movable_submodule, monkeypatch):

"""Adding a submodule must not leave a child process holding its checkout open."""

# Native reads have no persistent process; keep exercising the CLI fallback.

monkeypatch.setattr(git._backend, "object_data", lambda *args, **kwargs: NotImplemented)

sm = movable_submodule

checkout = Path(sm.repo.working_tree_dir, "new")

execute = Git.execute

processes = []

def capture_process(self, command, *args, **kwargs):

result = execute(self, command, *args, **kwargs)

if (

kwargs.get("as_process")

and "cat-file" in command

and Path(self.working_dir).resolve() == checkout.resolve()

processes.append(result.proc)

return result

monkeypatch.setattr(Git, "execute", capture_process)

try:

added = Submodule.add(sm.repo, "new", "new", sm.url)

assert processes, "The HEAD read must exercise a persistent cat-file process"

assert all(process.poll() is not None for process in processes)

added.move("moved")

finally:

for process in processes:

if process.poll() is None:

process.terminate()

process.wait()

@pytest.mark.parametrize("operation", ["update", "error", "recursive", "keep-going"])

def test_update_closes_checkout_processes_retained_by_logging(movable_submodule, monkeypatch, caplog, operation):

monkeypatch.setattr(git._backend, "object_data", lambda *args, **kwargs: NotImplemented)

sm = movable_submodule

recursive = operation in ("recursive", "keep-going")

if operation in ("error", "keep-going"):

sm.binsha = b"\x01" * len(sm.binsha)

checkout = Path(sm.abspath).resolve()

execute = Git.execute

processes = []

def capture_process(self, command, *args, **kwargs):

result = execute(self, command, *args, **kwargs)

if kwargs.get("as_process") and "cat-file" in command:

working_dir = Path(self.working_dir).resolve()

if working_dir == checkout or checkout in working_dir.parents:

processes.append(result.proc)

return result

monkeypatch.setattr(Git, "execute", capture_process)

try:

if operation == "error":

with pytest.raises(GitCommandError):

sm.update(to_latest_revision=True, no_fetch=True)

else:

sm.update(to_latest_revision=True, no_fetch=True, recursive=recursive, keep_going=operation == "keep-going")

# These records retain Head arguments and their internally opened Repos.

# Collection cannot release the processes while the records remain alive.

records = [record for record in caplog.records if "a tracking branch was not set" in record.msg]

assert len(records) == (2 if recursive else 1)

assert processes

assert all(process.poll() is not None for process in processes)

finally:

for process in processes:

if process.poll() is None:

process.terminate()

process.wait()

@pytest.fixture

def windows_directory_symlink_removal(monkeypatch):

"""Exercise Windows rmdir semantics on POSIX, where rmdir rejects symlinks."""

if sys.platform != "win32":

original_rmdir = os.rmdir

def rmdir(path, *args, **kwargs):

if osp.islink(path):

return os.unlink(path, *args, **kwargs)

return original_rmdir(path, *args, **kwargs)

monkeypatch.setattr(os, "rmdir", rmdir)

def test_submodule_allows_symlink_above_worktree(

configured_submodule, windows_directory_symlink_removal, metadata_realpath

"""Allow adding and moving submodules when the parent is opened through a symlink."""

sm = configured_submodule

tmp_path = Path(configured_submodule.repo.working_tree_dir).parent

alias = tmp_path / "alias"

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test_submodule.py

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