test_loader.py
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test_loader.py
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	# Copyright (C) 2016-2022 The Software Heritage developers
	# See the AUTHORS file at the top-level directory of this distribution
	# License: GNU General Public License version 3, or any later version
	# See top-level LICENSE file for more information

	import itertools
	import logging
	import os
	import shutil
	import subprocess
	import textwrap
	from typing import Any, Dict

	import pytest
	from subvertpy import SubversionException

	from swh.loader.svn.loader import (
	SvnLoader,
	SvnLoaderFromDumpArchive,
	SvnLoaderFromRemoteDump,
	)
	from swh.loader.svn.svn import SvnRepo
	from swh.loader.svn.utils import init_svn_repo_from_dump
	from swh.loader.tests import (
	assert_last_visit_matches,
	check_snapshot,
	get_stats,
	prepare_repository_from_archive,
	)
	from swh.model.from_disk import DentryPerms, Directory
	from swh.model.hashutil import hash_to_bytes
	from swh.model.model import Snapshot, SnapshotBranch, TargetType

	from .utils import CommitChange, CommitChangeType, add_commit

	GOURMET_SNAPSHOT = Snapshot(
	id=hash_to_bytes("889cacc2731e3312abfb2b1a0c18ade82a949e07"),
	branches={
	b"HEAD": SnapshotBranch(
	target=hash_to_bytes("4876cb10aec6f708f7466dddf547567b65f6c39c"),
	target_type=TargetType.REVISION,
	)
	},
	)

	GOURMET_UPDATES_SNAPSHOT = Snapshot(
	id=hash_to_bytes("11086d15317014e43d2438b7ffc712c44f1b8afe"),
	branches={
	b"HEAD": SnapshotBranch(
	target=hash_to_bytes("171dc35522bfd17dda4e90a542a0377fb2fc707a"),
	target_type=TargetType.REVISION,
	)
	},
	)


	def test_loader_svn_not_found_no_mock(swh_storage, tmp_path):
	"""Given an unknown repository, the loader visit ends up in status not_found"""
	repo_url = "unknown-repository"
	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path)

	assert loader.load() == {"status": "uneventful"}

	assert_last_visit_matches(
	swh_storage,
	repo_url,
	status="not_found",
	type="svn",
	)


	@pytest.mark.parametrize(
	"exception_msg",
	[
	"Unable to connect to a repository at URL",
	"Unknown URL type",
	],
	)
	def test_loader_svn_not_found(swh_storage, tmp_path, exception_msg, mocker):
	"""Given unknown repository issues, the loader visit ends up in status not_found"""
	mock = mocker.patch("swh.loader.svn.loader.SvnRepo")
	mock.side_effect = SubversionException(exception_msg, 0)

	unknown_repo_url = "unknown-repository"
	loader = SvnLoader(swh_storage, unknown_repo_url, temp_directory=tmp_path)

	assert loader.load() == {"status": "uneventful"}

	assert_last_visit_matches(
	swh_storage,
	unknown_repo_url,
	status="not_found",
	type="svn",
	)


	@pytest.mark.parametrize(
	"exception",
	[
	SubversionException("Irrelevant message, considered a failure", 10),
	SubversionException("Present but fails to read, considered a failure", 20),
	ValueError("considered a failure"),
	],
	)
	def test_loader_svn_failures(swh_storage, tmp_path, exception, mocker):
	"""Given any errors raised, the loader visit ends up in status failed"""
	mock = mocker.patch("swh.loader.svn.loader.SvnRepo")
	mock.side_effect = exception

	existing_repo_url = "existing-repo-url"
	loader = SvnLoader(swh_storage, existing_repo_url, temp_directory=tmp_path)

	assert loader.load() == {"status": "failed"}

	assert_last_visit_matches(
	swh_storage,
	existing_repo_url,
	status="failed",
	type="svn",
	)


	def test_loader_svnrdump_not_found(swh_storage, tmp_path, mocker):
	"""Loading from remote dump which does not exist should end up as not_found visit"""
	unknown_repo_url = "file:///tmp/svn.code.sf.net/p/white-rats-studios/svn"

	loader = SvnLoaderFromRemoteDump(
	swh_storage, unknown_repo_url, temp_directory=tmp_path
	)

	assert loader.load() == {"status": "uneventful"}

	assert_last_visit_matches(
	swh_storage,
	unknown_repo_url,
	status="not_found",
	type="svn",
	)


	def test_loader_svnrdump_no_such_revision(swh_storage, tmp_path, datadir):
	"""Visit multiple times an origin with the remote loader should not raise.

	It used to fail the ingestion on the second visit with a "No such revision x,
	160006" message.

	"""
	archive_ori_dump = os.path.join(datadir, "penguinsdbtools2018.dump.gz")
	archive_dump_dir = os.path.join(tmp_path, "dump")
	os.mkdir(archive_dump_dir)
	archive_dump = os.path.join(archive_dump_dir, "penguinsdbtools2018.dump.gz")
	# loader now drops the dump as soon as it's mounted so we need to make a copy first
	shutil.copyfile(archive_ori_dump, archive_dump)

	loading_path = str(tmp_path / "loading")
	os.mkdir(loading_path)

	# Prepare the dump as a local svn repository for test purposes
	temp_dir, repo_path = init_svn_repo_from_dump(
	archive_dump, root_dir=tmp_path, gzip=True
	)
	repo_url = f"file://{repo_path}"

	loader = SvnLoaderFromRemoteDump(swh_storage, repo_url, temp_directory=loading_path)
	assert loader.load() == {"status": "eventful"}
	actual_visit = assert_last_visit_matches(
	swh_storage,
	repo_url,
	status="full",
	type="svn",
	)
	check_snapshot(loader.snapshot, loader.storage)

	loader2 = SvnLoaderFromRemoteDump(
	swh_storage, repo_url, temp_directory=loading_path
	)
	# Visiting a second time the same repository should be uneventful...
	assert loader2.load() == {"status": "uneventful"}
	actual_visit2 = assert_last_visit_matches(
	swh_storage,
	repo_url,
	status="full",
	type="svn",
	)

	assert actual_visit.snapshot is not None
	# ... with the same snapshot as the first visit
	assert actual_visit2.snapshot == actual_visit.snapshot


	def test_loader_svn_new_visit(swh_storage, datadir, tmp_path):
	"""Eventful visit should yield 1 snapshot"""
	archive_name = "pkg-gourmet"
	archive_path = os.path.join(datadir, f"{archive_name}.tgz")
	repo_url = prepare_repository_from_archive(archive_path, archive_name, tmp_path)

	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path)

	assert loader.load() == {"status": "eventful"}

	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	snapshot=GOURMET_SNAPSHOT.id,
	)
	check_snapshot(loader.snapshot, loader.storage)

	stats = get_stats(loader.storage)
	assert stats == {
	"content": 19,
	"directory": 17,
	"origin": 1,
	"origin_visit": 1,
	"release": 0,
	"revision": 6,
	"skipped_content": 0,
	"snapshot": 1,
	}

	check_snapshot(GOURMET_SNAPSHOT, loader.storage)


	def test_loader_svn_2_visits_no_change(swh_storage, datadir, tmp_path):
	"""Visit multiple times a repository with no change should yield the same snapshot"""
	archive_name = "pkg-gourmet"
	archive_path = os.path.join(datadir, f"{archive_name}.tgz")
	repo_url = prepare_repository_from_archive(archive_path, archive_name, tmp_path)

	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path)

	assert loader.load() == {"status": "eventful"}
	visit_status1 = assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	snapshot=GOURMET_SNAPSHOT.id,
	)
	check_snapshot(loader.snapshot, loader.storage)

	assert loader.load() == {"status": "uneventful"}
	visit_status2 = assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	snapshot=GOURMET_SNAPSHOT.id,
	)

	assert visit_status1.date < visit_status2.date
	assert visit_status1.snapshot == visit_status2.snapshot

	stats = get_stats(loader.storage)
	assert stats["origin_visit"] == 1 + 1 # computed twice the same snapshot
	assert stats["snapshot"] == 1

	# even starting from previous revision...
	start_revision = loader.storage.revision_get(
	[hash_to_bytes("95edacc8848369d6fb1608e887d6d2474fd5224f")]
	)[0]
	assert start_revision is not None

	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path)
	assert loader.load() == {"status": "uneventful"}

	stats = get_stats(loader.storage)
	assert stats["origin_visit"] == 2 + 1
	# ... with no change in repository, this yields the same snapshot
	assert stats["snapshot"] == 1

	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	snapshot=GOURMET_SNAPSHOT.id,
	)


	def test_loader_tampered_repository(swh_storage, datadir, tmp_path):
	"""In this scenario, the dump has been tampered with to modify the
	commit log [1]. This results in a hash divergence which is
	detected at startup after a new run for the same origin.

	In effect, this will perform a complete reloading of the repository.

	[1] Tampering with revision 6 log message following:

	```
	tar xvf pkg-gourmet.tgz # initial repository ingested
	cd pkg-gourmet/
	echo "Tampering with commit log message for fun and profit" > log.txt
	svnadmin setlog . -r 6 log.txt --bypass-hooks
	tar cvf pkg-gourmet-tampered-rev6-log.tgz pkg-gourmet/
	```
	"""
	archive_name = "pkg-gourmet"
	archive_path = os.path.join(datadir, f"{archive_name}.tgz")
	repo_url = prepare_repository_from_archive(archive_path, archive_name, tmp_path)

	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path)
	assert loader.load() == {"status": "eventful"}
	check_snapshot(GOURMET_SNAPSHOT, loader.storage)

	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	snapshot=GOURMET_SNAPSHOT.id,
	)
	check_snapshot(loader.snapshot, loader.storage)

	archive_path2 = os.path.join(datadir, "pkg-gourmet-tampered-rev6-log.tgz")
	repo_tampered_url = prepare_repository_from_archive(
	archive_path2, archive_name, tmp_path
	)

	loader2 = SvnLoader(
	swh_storage, repo_tampered_url, origin_url=repo_url, temp_directory=tmp_path
	)
	assert loader2.load() == {"status": "eventful"}

	assert_last_visit_matches(
	loader2.storage,
	repo_url,
	status="full",
	type="svn",
	snapshot=hash_to_bytes("5aa61959e788e281fd6e187053d0f46c68e8d8bb"),
	)
	check_snapshot(loader.snapshot, loader.storage)

	stats = get_stats(loader.storage)
	assert stats["origin"] == 1
	assert stats["origin_visit"] == 2
	assert stats["snapshot"] == 2


	def test_loader_svn_visit_with_changes(swh_storage, datadir, tmp_path):
	"""In this scenario, the repository has been updated with new changes.
	The loading visit should result in new objects stored and 1 new
	snapshot.

	"""
	archive_name = "pkg-gourmet"
	archive_path = os.path.join(datadir, f"{archive_name}.tgz")
	repo_initial_url = prepare_repository_from_archive(
	archive_path, archive_name, tmp_path
	)

	# repo_initial_url becomes the origin_url we want to visit some more below
	loader = SvnLoader(swh_storage, repo_initial_url, temp_directory=tmp_path)

	assert loader.load() == {"status": "eventful"}
	visit_status1 = assert_last_visit_matches(
	loader.storage,
	repo_initial_url,
	status="full",
	type="svn",
	snapshot=GOURMET_SNAPSHOT.id,
	)
	check_snapshot(GOURMET_SNAPSHOT, loader.storage)

	archive_path = os.path.join(datadir, "pkg-gourmet-with-updates.tgz")
	repo_updated_url = prepare_repository_from_archive(
	archive_path, "pkg-gourmet", tmp_path
	)

	loader = SvnLoader(
	swh_storage,
	repo_updated_url,
	origin_url=repo_initial_url,
	temp_directory=tmp_path,
	)

	assert loader.load() == {"status": "eventful"}
	visit_status2 = assert_last_visit_matches(
	loader.storage,
	repo_updated_url,
	status="full",
	type="svn",
	snapshot=GOURMET_UPDATES_SNAPSHOT.id,
	)

	assert visit_status1.date < visit_status2.date
	assert visit_status1.snapshot != visit_status2.snapshot

	stats = get_stats(loader.storage)
	assert stats == {
	"content": 22,
	"directory": 28,
	"origin": 1,
	"origin_visit": 2,
	"release": 0,
	"revision": 11,
	"skipped_content": 0,
	"snapshot": 2,
	}

	check_snapshot(GOURMET_UPDATES_SNAPSHOT, loader.storage)

	# Let's start the ingestion from the start, this should yield the same result
	loader = SvnLoader(
	swh_storage,
	repo_updated_url,
	origin_url=repo_initial_url,
	incremental=False,
	temp_directory=tmp_path,
	)
	assert loader.load() == {"status": "eventful"}
	visit_status3 = assert_last_visit_matches(
	loader.storage,
	repo_updated_url,
	status="full",
	type="svn",
	snapshot=GOURMET_UPDATES_SNAPSHOT.id,
	)
	assert visit_status2.date < visit_status3.date
	assert visit_status3.snapshot == visit_status2.snapshot
	check_snapshot(GOURMET_UPDATES_SNAPSHOT, loader.storage)

	stats = get_stats(loader.storage)
	assert stats["origin"] == 1 # always the same visit
	assert stats["origin_visit"] == 2 + 1 # 1 more visit
	assert stats["snapshot"] == 2 # no new snapshot


	def test_loader_svn_visit_start_from_revision(swh_storage, datadir, tmp_path):
	"""Starting from existing revision, next visit on changed repo should yield 1 new
	snapshot.

	"""
	archive_name = "pkg-gourmet"
	archive_path = os.path.join(datadir, f"{archive_name}.tgz")
	repo_initial_url = prepare_repository_from_archive(
	archive_path, archive_name, tmp_path
	)

	# repo_initial_url becomes the origin_url we want to visit some more below
	loader = SvnLoader(swh_storage, repo_initial_url, temp_directory=tmp_path)

	assert loader.load() == {"status": "eventful"}
	visit_status1 = assert_last_visit_matches(
	loader.storage,
	repo_initial_url,
	status="full",
	type="svn",
	snapshot=GOURMET_SNAPSHOT.id,
	)
	check_snapshot(GOURMET_SNAPSHOT, loader.storage)

	start_revision = loader.storage.revision_get(
	[hash_to_bytes("95edacc8848369d6fb1608e887d6d2474fd5224f")]
	)[0]
	assert start_revision is not None

	archive_path = os.path.join(datadir, "pkg-gourmet-with-updates.tgz")
	repo_updated_url = prepare_repository_from_archive(
	archive_path, "pkg-gourmet", tmp_path
	)

	# we'll start from start_revision
	loader = SvnLoader(
	swh_storage,
	repo_updated_url,
	origin_url=repo_initial_url,
	temp_directory=tmp_path,
	)

	assert loader.load() == {"status": "eventful"}

	# nonetheless, we obtain the same snapshot (as previous tests on that repository)
	visit_status2 = assert_last_visit_matches(
	loader.storage,
	repo_updated_url,
	status="full",
	type="svn",
	snapshot=GOURMET_UPDATES_SNAPSHOT.id,
	)

	assert visit_status1.date < visit_status2.date
	assert visit_status1.snapshot != visit_status2.snapshot

	stats = get_stats(loader.storage)
	assert stats == {
	"content": 22,
	"directory": 28,
	"origin": 1,
	"origin_visit": 2,
	"release": 0,
	"revision": 11,
	"skipped_content": 0,
	"snapshot": 2,
	}

	check_snapshot(GOURMET_UPDATES_SNAPSHOT, loader.storage)


	def test_loader_svn_visit_with_eol_style(swh_storage, datadir, tmp_path):
	"""Check that a svn repo containing a versioned file with CRLF line
	endings with svn:eol-style property set to 'native' (this is a
	violation of svn specification as the file should have been
	stored with LF line endings) can be loaded anyway.

	"""
	archive_name = "mediawiki-repo-r407-eol-native-crlf"
	archive_path = os.path.join(datadir, f"{archive_name}.tgz")
	repo_url = prepare_repository_from_archive(archive_path, archive_name, tmp_path)

	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path)

	assert loader.load() == {"status": "eventful"}
	mediawiki_snapshot = Snapshot(
	id=hash_to_bytes("d6d6e9703f157c5702d9a4a5dec878926ed4ab76"),
	branches={
	b"HEAD": SnapshotBranch(
	target=hash_to_bytes("7da4975c363101b819756d33459f30a866d01b1b"),
	target_type=TargetType.REVISION,
	)
	},
	)
	check_snapshot(mediawiki_snapshot, loader.storage)

	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	snapshot=mediawiki_snapshot.id,
	)

	stats = get_stats(loader.storage)
	assert stats["origin"] == 1
	assert stats["origin_visit"] == 1
	assert stats["snapshot"] == 1


	def test_loader_svn_visit_with_mixed_crlf_lf(swh_storage, datadir, tmp_path):
	"""Check that a svn repo containing a versioned file with mixed
	CRLF/LF line endings with svn:eol-style property set to 'native'
	(this is a violation of svn specification as mixed line endings
	for textual content should not be stored when the svn:eol-style
	property is set) can be loaded anyway.

	"""
	archive_name = "pyang-repo-r343-eol-native-mixed-lf-crlf"
	archive_path = os.path.join(datadir, f"{archive_name}.tgz")
	repo_url = prepare_repository_from_archive(archive_path, archive_name, tmp_path)

	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path)

	assert loader.load() == {"status": "eventful"}
	pyang_snapshot = Snapshot(
	id=hash_to_bytes("6d9590de11b00a5801de0ff3297c5b44bbbf7d24"),
	branches={
	b"HEAD": SnapshotBranch(
	target=hash_to_bytes("9c6962eeb9164a636c374be700672355e34a98a7"),
	target_type=TargetType.REVISION,
	)
	},
	)
	check_snapshot(pyang_snapshot, loader.storage)

	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	snapshot=pyang_snapshot.id,
	)

	stats = get_stats(loader.storage)
	assert stats["origin"] == 1
	assert stats["origin_visit"] == 1
	assert stats["snapshot"] == 1


	def test_loader_svn_with_symlink(swh_storage, datadir, tmp_path):
	"""Repository with symlinks should be ingested ok

	Edge case:
	- first create a file and commit it.
	Remove it, then add folder holding the same name, commit.
	- do the same scenario with symbolic link (instead of file)

	"""
	archive_name = "pkg-gourmet"
	archive_path = os.path.join(
	datadir, "pkg-gourmet-with-edge-case-links-and-files.tgz"
	)
	repo_url = prepare_repository_from_archive(archive_path, archive_name, tmp_path)

	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path)

	assert loader.load() == {"status": "eventful"}
	gourmet_edge_cases_snapshot = Snapshot(
	id=hash_to_bytes("18e60982fe521a2546ab8c3c73a535d80462d9d0"),
	branches={
	b"HEAD": SnapshotBranch(
	target=hash_to_bytes("3f43af2578fccf18b0d4198e48563da7929dc608"),
	target_type=TargetType.REVISION,
	)
	},
	)
	check_snapshot(gourmet_edge_cases_snapshot, loader.storage)

	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	snapshot=gourmet_edge_cases_snapshot.id,
	)

	stats = get_stats(loader.storage)
	assert stats["origin"] == 1
	assert stats["origin_visit"] == 1
	assert stats["snapshot"] == 1
	assert stats["revision"] == 19


	def test_loader_svn_with_wrong_symlinks(swh_storage, datadir, tmp_path):
	"""Repository with wrong symlinks should be ingested ok nonetheless

	Edge case:
	- wrong symbolic link
	- wrong symbolic link with empty space names

	"""
	archive_name = "pkg-gourmet"
	archive_path = os.path.join(datadir, "pkg-gourmet-with-wrong-link-cases.tgz")
	repo_url = prepare_repository_from_archive(archive_path, archive_name, tmp_path)

	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path)

	assert loader.load() == {"status": "eventful"}
	gourmet_wrong_links_snapshot = Snapshot(
	id=hash_to_bytes("b17f38acabb90f066dedd30c29f01a02af88a5c4"),
	branches={
	b"HEAD": SnapshotBranch(
	target=hash_to_bytes("cf30d3bb9d5967d0a2bbeacc405f10a5dd9b138a"),
	target_type=TargetType.REVISION,
	)
	},
	)
	check_snapshot(gourmet_wrong_links_snapshot, loader.storage)

	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	snapshot=gourmet_wrong_links_snapshot.id,
	)

	stats = get_stats(loader.storage)
	assert stats["origin"] == 1
	assert stats["origin_visit"] == 1
	assert stats["snapshot"] == 1
	assert stats["revision"] == 21


	def test_loader_svn_cleanup_loader(swh_storage, datadir, tmp_path):
	"""Loader should clean up its working directory after the load"""
	archive_name = "pkg-gourmet"
	archive_path = os.path.join(datadir, f"{archive_name}.tgz")
	repo_url = prepare_repository_from_archive(archive_path, archive_name, tmp_path)

	loading_temp_directory = str(tmp_path / "loading")
	os.mkdir(loading_temp_directory)
	loader = SvnLoader(swh_storage, repo_url, temp_directory=loading_temp_directory)
	assert loader.load() == {"status": "eventful"}

	# the root temporary directory still exists
	assert os.path.exists(loader.temp_directory)
	# but it should be empty
	assert os.listdir(loader.temp_directory) == []


	def test_loader_svn_cleanup_loader_from_remote_dump(swh_storage, datadir, tmp_path):
	"""Loader should clean up its working directory after the load"""
	archive_name = "pkg-gourmet"
	archive_path = os.path.join(datadir, f"{archive_name}.tgz")
	repo_url = prepare_repository_from_archive(archive_path, archive_name, tmp_path)

	loading_temp_directory = str(tmp_path / "loading")
	os.mkdir(loading_temp_directory)

	loader = SvnLoaderFromRemoteDump(
	swh_storage, repo_url, temp_directory=loading_temp_directory
	)
	assert loader.load() == {"status": "eventful"}

	# the root temporary directory still exists
	assert os.path.exists(loader.temp_directory)
	# but it should be empty
	assert os.listdir(loader.temp_directory) == []
	# the internal temp_dir should be cleaned up though
	assert not os.path.exists(loader.temp_dir)


	def test_loader_svn_cleanup_loader_from_dump_archive(swh_storage, datadir, tmp_path):
	"""Loader should clean up its working directory after the load"""
	archive_ori_dump = os.path.join(datadir, "penguinsdbtools2018.dump.gz")
	archive_dump_dir = os.path.join(tmp_path, "dump")
	os.mkdir(archive_dump_dir)
	archive_dump = os.path.join(archive_dump_dir, "penguinsdbtools2018.dump.gz")
	# loader now drops the dump as soon as it's mounted so we need to make a copy first
	shutil.copyfile(archive_ori_dump, archive_dump)

	loading_path = str(tmp_path / "loading")
	os.mkdir(loading_path)

	# Prepare the dump as a local svn repository for test purposes
	temp_dir, repo_path = init_svn_repo_from_dump(
	archive_dump, root_dir=tmp_path, gzip=True
	)
	repo_url = f"file://{repo_path}"

	loader = SvnLoaderFromRemoteDump(swh_storage, repo_url, temp_directory=loading_path)
	assert loader.load() == {"status": "eventful"}

	# the root temporary directory still exists
	assert os.path.exists(loader.temp_directory)
	# but it should be empty
	assert os.listdir(loader.temp_directory) == []
	# the internal temp_dir should be cleaned up though
	assert not os.path.exists(loader.temp_dir)


	def test_svn_loader_from_remote_dump(swh_storage, datadir, tmpdir_factory):
	archive_name = "pkg-gourmet"
	archive_path = os.path.join(datadir, f"{archive_name}.tgz")
	tmp_path = tmpdir_factory.mktemp("repo1")
	repo_url = prepare_repository_from_archive(archive_path, archive_name, tmp_path)

	loaderFromDump = SvnLoaderFromRemoteDump(
	swh_storage, repo_url, temp_directory=tmp_path
	)
	assert loaderFromDump.load() == {"status": "eventful"}
	assert_last_visit_matches(
	loaderFromDump.storage,
	repo_url,
	status="full",
	type="svn",
	snapshot=GOURMET_SNAPSHOT.id,
	)

	# rename to another origin
	tmp_path = tmpdir_factory.mktemp("repo2")
	origin_url = prepare_repository_from_archive(archive_path, archive_name, tmp_path)

	loader = SvnLoader(
	swh_storage, repo_url, origin_url=origin_url, temp_directory=tmp_path
	)
	assert loader.load() == {"status": "eventful"} # because are working on new origin
	assert_last_visit_matches(
	loader.storage,
	origin_url,
	status="full",
	type="svn",
	snapshot=GOURMET_SNAPSHOT.id,
	)

	check_snapshot(GOURMET_SNAPSHOT, loader.storage)

	stats = get_stats(loader.storage)
	assert stats["origin"] == 2 # created one more origin
	assert stats["origin_visit"] == 2
	assert stats["snapshot"] == 1

	loader = SvnLoader(
	swh_storage, repo_url, temp_directory=tmp_path
	) # no change on the origin-url
	assert loader.load() == {"status": "uneventful"}
	assert_last_visit_matches(
	loader.storage,
	origin_url,
	status="full",
	type="svn",
	snapshot=GOURMET_SNAPSHOT.id,
	)

	stats = get_stats(loader.storage)
	assert stats["origin"] == 2
	assert stats["origin_visit"] == 3
	assert stats["snapshot"] == 1

	# second visit from the dump should be uneventful
	loaderFromDump = SvnLoaderFromRemoteDump(
	swh_storage, repo_url, temp_directory=tmp_path
	)
	assert loaderFromDump.load() == {"status": "uneventful"}


	def test_svn_loader_from_remote_dump_incremental_load_on_stale_repo(
	swh_storage, datadir, tmp_path, mocker
	):
	archive_name = "pkg-gourmet"
	archive_path = os.path.join(datadir, f"{archive_name}.tgz")
	repo_url = prepare_repository_from_archive(archive_path, archive_name, tmp_path)

	# first load: a dump file will be created, mounted to a local repository
	# and the latter will be loaded into the archive
	loaderFromDump = SvnLoaderFromRemoteDump(
	swh_storage, repo_url, temp_directory=tmp_path
	)
	assert loaderFromDump.load() == {"status": "eventful"}
	assert_last_visit_matches(
	loaderFromDump.storage,
	repo_url,
	status="full",
	type="svn",
	snapshot=GOURMET_SNAPSHOT.id,
	)

	# second load on same repository: the loader will detect there is no changes
	# since last load and will skip the dump, mount and load phases
	loaderFromDump = SvnLoaderFromRemoteDump(
	swh_storage, repo_url, temp_directory=tmp_path
	)

	loaderFromDump.dump_svn_revisions = mocker.MagicMock()
	init_svn_repo_from_dump = mocker.patch(
	"swh.loader.svn.loader.init_svn_repo_from_dump"
	)
	loaderFromDump.process_svn_revisions = mocker.MagicMock()
	loaderFromDump._check_revision_divergence = mocker.MagicMock()

	assert loaderFromDump.load() == {"status": "uneventful"}
	assert_last_visit_matches(
	loaderFromDump.storage,
	repo_url,
	status="full",
	type="svn",
	snapshot=GOURMET_SNAPSHOT.id,
	)

	# no dump
	loaderFromDump.dump_svn_revisions.assert_not_called()
	# no mount
	init_svn_repo_from_dump.assert_not_called()
	# no loading
	loaderFromDump.process_svn_revisions.assert_not_called()
	# no redundant post_load processing
	loaderFromDump._check_revision_divergence.assert_not_called()


	def test_svn_loader_from_remote_dump_incremental_load_on_non_stale_repo(
	swh_storage, datadir, tmp_path, mocker
	):
	archive_name = "pkg-gourmet"
	archive_path = os.path.join(datadir, f"{archive_name}.tgz")
	repo_url = prepare_repository_from_archive(archive_path, archive_name, tmp_path)

	# first load
	loader = SvnLoaderFromRemoteDump(swh_storage, repo_url, temp_directory=tmp_path)
	loader.load()

	archive_path = os.path.join(datadir, "pkg-gourmet-with-updates.tgz")
	repo_updated_url = prepare_repository_from_archive(
	archive_path, archive_name, tmp_path
	)

	# second load
	loader = SvnLoaderFromRemoteDump(
	swh_storage, repo_updated_url, temp_directory=tmp_path
	)

	dump_svn_revisions = mocker.spy(loader, "dump_svn_revisions")
	process_svn_revisions = mocker.spy(loader, "process_svn_revisions")

	loader.load()

	dump_svn_revisions.assert_called()
	process_svn_revisions.assert_called()


	def test_loader_user_defined_svn_properties(swh_storage, datadir, tmp_path):
	"""Edge cases: The repository held some user defined svn-properties with special
	encodings, this prevented the repository from being loaded even though we do not
	ingest those information.

	"""
	archive_name = "httthttt"
	archive_path = os.path.join(datadir, f"{archive_name}.tgz")
	repo_url = prepare_repository_from_archive(archive_path, archive_name, tmp_path)

	loader = SvnLoader(swh_storage, repo_url)

	assert loader.load() == {"status": "eventful"}
	expected_snapshot = Snapshot(
	id=hash_to_bytes("70487267f682c07e52a2371061369b6cf5bffa47"),
	branches={
	b"HEAD": SnapshotBranch(
	target=hash_to_bytes("604a17dbb15e8d7ecb3e9f3768d09bf493667a93"),
	target_type=TargetType.REVISION,
	)
	},
	)
	check_snapshot(expected_snapshot, loader.storage)

	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	snapshot=expected_snapshot.id,
	)

	stats = get_stats(loader.storage)
	assert stats["origin"] == 1
	assert stats["origin_visit"] == 1
	assert stats["snapshot"] == 1
	assert stats["revision"] == 7


	def test_loader_svn_dir_added_then_removed(swh_storage, datadir, tmp_path):
	"""Loader should handle directory removal when processing a commit"""
	archive_name = "pkg-gourmet"
	archive_path = os.path.join(datadir, f"{archive_name}-add-remove-dir.tgz")
	repo_url = prepare_repository_from_archive(archive_path, archive_name, tmp_path)

	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path)

	assert loader.load() == {"status": "eventful"}
	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	)
	check_snapshot(loader.snapshot, loader.storage)


	def test_loader_svn_loader_from_dump_archive(swh_storage, datadir, tmp_path):
	archive_name = "pkg-gourmet"
	archive_path = os.path.join(datadir, f"{archive_name}.tgz")
	repo_url = prepare_repository_from_archive(archive_path, archive_name, tmp_path)
	dump_filename = f"{archive_name}.dump"

	with open(os.path.join(tmp_path, dump_filename), "wb") as dump_file:
	# create compressed dump file of pkg-gourmet repo
	subprocess.run(["svnrdump", "dump", repo_url], stdout=dump_file)
	subprocess.run(["gzip", dump_filename], cwd=tmp_path)

	# load svn repo from that compressed dump file
	loader = SvnLoaderFromDumpArchive(
	swh_storage,
	url=repo_url,
	archive_path=os.path.join(tmp_path, f"{dump_filename}.gz"),
	temp_directory=tmp_path,
	)

	assert loader.load() == {"status": "eventful"}

	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	snapshot=GOURMET_SNAPSHOT.id,
	)

	check_snapshot(GOURMET_SNAPSHOT, loader.storage)

	assert get_stats(loader.storage) == {
	"content": 19,
	"directory": 17,
	"origin": 1,
	"origin_visit": 1,
	"release": 0,
	"revision": 6,
	"skipped_content": 0,
	"snapshot": 1,
	}


	def test_loader_eol_style_file_property_handling_edge_case(
	swh_storage, repo_url, tmp_path
	):

	# # first commit
	add_commit(
	repo_url,
	(
	"Add a directory containing a file with CRLF end of line "
	"and set svn:eol-style property to native so CRLF will be "
	"replaced by LF in the file when exporting the revision"
	),
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="directory/file_with_crlf_eol.txt",
	properties={"svn:eol-style": "native"},
	data=b"Hello world!\r\n",
	)
	],
	)

	# second commit
	add_commit(
	repo_url,
	"Remove previously added directory and file",
	[
	CommitChange(
	change_type=CommitChangeType.Delete,
	path="directory/",
	)
	],
	)

	# third commit
	add_commit(
	repo_url,
	(
	"Add again same directory containing same file with CRLF end of line "
	"but do not set svn:eol-style property value so CRLF will not be "
	"replaced by LF when exporting the revision"
	),
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="directory/file_with_crlf_eol.txt",
	data=b"Hello world!\r\n",
	)
	],
	)

	# instantiate a svn loader checking after each processed revision that
	# the repository filesystem it reconstructed does not differ from a subversion
	# export of that revision
	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path, check_revision=1)

	assert loader.load() == {"status": "eventful"}
	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	)
	check_snapshot(loader.snapshot, loader.storage)

	assert get_stats(loader.storage) == {
	"content": 2,
	"directory": 5,
	"origin": 1,
	"origin_visit": 1,
	"release": 0,
	"revision": 3,
	"skipped_content": 0,
	"snapshot": 1,
	}


	def get_head_revision_paths_info(loader: SvnLoader) -> Dict[bytes, Dict[str, Any]]:
	assert loader.snapshot is not None
	root_dir = loader.snapshot.branches[b"HEAD"].target
	revision = loader.storage.revision_get([root_dir])[0]
	assert revision is not None

	paths = {}
	for entry in loader.storage.directory_ls(revision.directory, recursive=True):
	paths[entry["name"]] = entry
	return paths


	def test_loader_eol_style_on_svn_link_handling(swh_storage, repo_url, tmp_path):

	# first commit
	add_commit(
	repo_url,
	(
	"Add a regular file, a directory and a link to the regular file "
	"in the directory. Set svn:eol-style property for the regular "
	"file and the link. Set svn:special property for the link."
	),
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="file_with_crlf_eol.txt",
	properties={"svn:eol-style": "native"},
	data=b"Hello world!\r\n",
	),
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="directory/file_with_crlf_eol.txt",
	properties={"svn:eol-style": "native", "svn:special": "*"},
	data=b"link ../file_with_crlf_eol.txt",
	),
	],
	)

	# instantiate a svn loader checking after each processed revision that
	# the repository filesystem it reconstructed does not differ from a subversion
	# export of that revision
	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path, check_revision=1)

	assert loader.load() == {"status": "eventful"}
	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	)
	check_snapshot(loader.snapshot, loader.storage)

	# check loaded objects are those expected
	assert get_stats(loader.storage) == {
	"content": 2,
	"directory": 2,
	"origin": 1,
	"origin_visit": 1,
	"release": 0,
	"revision": 1,
	"skipped_content": 0,
	"snapshot": 1,
	}

	paths = get_head_revision_paths_info(loader)

	assert (
	loader.storage.content_get_data(paths[b"file_with_crlf_eol.txt"]["sha1"])
	== b"Hello world!\n"
	)

	assert paths[b"directory/file_with_crlf_eol.txt"]["perms"] == DentryPerms.symlink
	assert (
	loader.storage.content_get_data(
	paths[b"directory/file_with_crlf_eol.txt"]["sha1"]
	)
	== b"../file_with_crlf_eol.txt"
	)


	def test_loader_svn_special_property_unset(swh_storage, repo_url, tmp_path):

	# first commit
	add_commit(
	repo_url,
	(
	"Create a regular file, a link to a file and a link to an "
	"external file. Set the svn:special property on the links."
	),
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="file.txt",
	data=b"Hello world!\n",
	),
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="link.txt",
	properties={"svn:special": "*"},
	data=b"link ./file.txt",
	),
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="external_link.txt",
	properties={"svn:special": "*"},
	data=b"link /home/user/data.txt",
	),
	],
	)

	# second commit
	add_commit(
	repo_url,
	"Unset the svn:special property on the links.",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="link.txt",
	properties={"svn:special": None},
	),
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="external_link.txt",
	properties={"svn:special": None},
	),
	],
	)

	# instantiate a svn loader checking after each processed revision that
	# the repository filesystem it reconstructed does not differ from a subversion
	# export of that revision
	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path, check_revision=1)

	assert loader.load() == {"status": "eventful"}
	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	)
	check_snapshot(loader.snapshot, loader.storage)

	# check loaded objects are those expected
	assert get_stats(loader.storage) == {
	"content": 5,
	"directory": 2,
	"origin": 1,
	"origin_visit": 1,
	"release": 0,
	"revision": 2,
	"skipped_content": 0,
	"snapshot": 1,
	}

	paths = get_head_revision_paths_info(loader)

	assert paths[b"link.txt"]["perms"] == DentryPerms.content
	assert (
	loader.storage.content_get_data(paths[b"link.txt"]["sha1"])
	== b"link ./file.txt"
	)

	assert paths[b"external_link.txt"]["perms"] == DentryPerms.content
	assert (
	loader.storage.content_get_data(paths[b"external_link.txt"]["sha1"])
	== b"link /home/user/data.txt"
	)


	def test_loader_invalid_svn_eol_style_property_value(swh_storage, repo_url, tmp_path):

	filename = "file_with_crlf_eol.txt"
	file_content = b"Hello world!\r\n"

	# # first commit
	add_commit(
	repo_url,
	(
	"Add a file with CRLF end of line and set svn:eol-style property "
	"to an invalid value."
	),
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path=filename,
	properties={"svn:eol-style": "foo"},
	data=file_content,
	)
	],
	)

	# instantiate a svn loader checking after each processed revision that
	# the repository filesystem it reconstructed does not differ from a subversion
	# export of that revision
	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path, check_revision=1)

	assert loader.load() == {"status": "eventful"}
	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	)
	check_snapshot(loader.snapshot, loader.storage)

	paths = get_head_revision_paths_info(loader)
	# end of lines should not have been processed
	assert (
	loader.storage.content_get_data(paths[filename.encode()]["sha1"])
	== file_content
	)


	def test_loader_first_revision_is_not_number_one(
	swh_storage, mocker, repo_url, tmp_path
	):
	class SvnRepoSkipFirstRevision(SvnRepo):
	def logs(self, revision_start, revision_end):
	"""Overrides logs method to skip revision number one in yielded revisions"""
	yield from super().logs(revision_start + 1, revision_end)

	from swh.loader.svn import loader

	mocker.patch.object(loader, "SvnRepo", SvnRepoSkipFirstRevision)

	for filename in ("foo", "bar", "baz"):
	add_commit(
	repo_url,
	f"Add {filename} file",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path=filename,
	data=f"{filename}\n".encode(),
	)
	],
	)

	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path)

	# post loading will detect an issue and make a partial visit with a snapshot
	assert loader.load() == {"status": "failed"}

	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="partial",
	type="svn",
	)
	check_snapshot(loader.snapshot, loader.storage)

	assert get_stats(loader.storage) == {
	"content": 2,
	"directory": 2,
	"origin": 1,
	"origin_visit": 1,
	"release": 0,
	"revision": 2,
	"skipped_content": 0,
	"snapshot": 1,
	}


	def test_loader_svn_special_property_on_binary_file(swh_storage, repo_url, tmp_path):
	"""When a file has the svn:special property set but is not a svn link,
	it might be truncated under certain conditions when performing an export
	operation."""

	data = (
	b"!<symlink>\xff\xfea\x00p\x00t\x00-\x00c\x00y\x00g\x00.\x00s\x00h\x00\x00\x00"
	)

	# first commit
	add_commit(
	repo_url,
	(
	"Add a non svn link binary file and set the svn:special property on it."
	"That file will be truncated when exporting it."
	),
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="binary_file",
	properties={"svn:special": "*"},
	data=data,
	),
	],
	)

	# second commit
	add_commit(
	repo_url,
	(
	"Add a non svn link binary file and set the svn:special and "
	"svn:mime-type properties on it."
	"That file will not be truncated when exporting it."
	),
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="another_binary_file",
	properties={
	"svn:special": "*",
	"svn:mime-type": "application/octet-stream",
	},
	data=data,
	),
	],
	)

	# third commit
	add_commit(
	repo_url,
	"Remove the svn:special property on the previously added files",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="binary_file",
	properties={"svn:special": None},
	),
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="another_binary_file",
	properties={"svn:special": None},
	),
	],
	)

	# instantiate a svn loader checking after each processed revision that
	# the repository filesystem it reconstructed does not differ from a subversion
	# export of that revision
	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path, check_revision=1)

	assert loader.load() == {"status": "eventful"}
	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	)
	check_snapshot(loader.snapshot, loader.storage)


	def test_loader_last_revision_divergence(swh_storage, datadir, tmp_path):
	archive_name = "pkg-gourmet"
	archive_path = os.path.join(datadir, f"{archive_name}.tgz")
	repo_url = prepare_repository_from_archive(archive_path, archive_name, tmp_path)

	class SvnLoaderRevisionDivergence(SvnLoader):
	def _check_revision_divergence(self, count, rev, dir_id):
	raise ValueError("revision divergence detected")

	loader = SvnLoaderRevisionDivergence(swh_storage, repo_url, temp_directory=tmp_path)

	assert loader.load() == {"status": "failed"}

	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="partial",
	type="svn",
	snapshot=GOURMET_SNAPSHOT.id,
	)
	check_snapshot(GOURMET_SNAPSHOT, loader.storage)


	def test_loader_delete_directory_while_file_has_same_prefix(
	swh_storage, repo_url, tmp_path
	):

	# first commit
	add_commit(
	repo_url,
	"Add a file and a directory with same prefix",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="foo/bar.c",
	data=b'#include "../foo.c"',
	),
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="foo.c",
	data=b"int foo() {return 0;}",
	),
	],
	)

	# second commit
	add_commit(
	repo_url,
	"Delete previously added directory and update file content",
	[
	CommitChange(change_type=CommitChangeType.Delete, path="foo"),
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="foo.c",
	data=b"int foo() {return 1;}",
	),
	],
	)

	# instantiate a svn loader checking after each processed revision that
	# the repository filesystem it reconstructed does not differ from a subversion
	# export of that revision
	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path, check_revision=1)

	assert loader.load() == {"status": "eventful"}
	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	)
	check_snapshot(loader.snapshot, loader.storage)


	def test_svn_loader_incremental(swh_storage, repo_url, tmp_path):

	# first commit
	add_commit(
	repo_url,
	(
	"Add a directory containing a file with CRLF end of line "
	"and set svn:eol-style property to native so CRLF will be "
	"replaced by LF in the file when exporting the revision"
	),
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="file_with_crlf_eol.txt",
	properties={"svn:eol-style": "native"},
	data=b"Hello world!\r\n",
	)
	],
	)

	# first load
	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path, check_revision=1)
	assert loader.load() == {"status": "eventful"}
	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	)
	check_snapshot(loader.snapshot, loader.storage)

	# second commit
	add_commit(
	repo_url,
	"Modify previously added file",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="file_with_crlf_eol.txt",
	data=b"Hello World!\r\n",
	)
	],
	)

	# second load, incremental
	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path, check_revision=1)
	assert loader.load() == {"status": "eventful"}
	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	)
	check_snapshot(loader.snapshot, loader.storage)

	# third commit
	add_commit(
	repo_url,
	"Unset svn:eol-style property on file",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="file_with_crlf_eol.txt",
	properties={"svn:eol-style": None},
	)
	],
	)

	# third load, incremental
	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path, check_revision=1)
	assert loader.load() == {"status": "eventful"}
	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	)
	check_snapshot(loader.snapshot, loader.storage)


	def test_svn_loader_incremental_replay_start_with_empty_directory(
	swh_storage, mocker, repo_url, tmp_path
	):

	# first commit
	add_commit(
	repo_url,
	("Add a file"),
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="foo.txt",
	data=b"foo\n",
	)
	],
	)

	# first load
	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path)
	assert loader.load() == {"status": "eventful"}
	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	)
	check_snapshot(loader.snapshot, loader.storage)

	# second commit
	add_commit(
	repo_url,
	"Modify previously added file",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="foo.txt",
	data=b"bar\n",
	)
	],
	)

	class SvnRepoCheckReplayStartWithEmptyDirectory(SvnRepo):
	def swh_hash_data_per_revision(self, start_revision: int, end_revision: int):
	"""Overrides swh_hash_data_per_revision method to grab the content
	of the directory where the svn revisions will be replayed before that
	process starts."""
	self.replay_dir_content_before_start = [
	os.path.join(root, name)
	for root, _, files in os.walk(self.local_url)
	for name in files
	]
	yield from super().swh_hash_data_per_revision(start_revision, end_revision)

	from swh.loader.svn import loader

	mocker.patch.object(loader, "SvnRepo", SvnRepoCheckReplayStartWithEmptyDirectory)

	# second load, incremental
	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path)
	loader.load()

	# check work directory was empty before replaying revisions
	assert loader.svnrepo.replay_dir_content_before_start == []


	def test_loader_svn_executable_property_on_svn_link_handling(
	swh_storage, repo_url, tmp_path
	):

	# first commit
	add_commit(
	repo_url,
	(
	"Add an executable file and a svn link to it."
	"Set svn:executable property for both paths."
	),
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="hello-world",
	properties={"svn:executable": "*"},
	data=b"#!/bin/bash\necho Hello World !",
	),
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="hello",
	properties={"svn:executable": "", "svn:special": ""},
	data=b"link hello-world",
	),
	],
	)

	# second commit
	add_commit(
	repo_url,
	(
	"Remove executable file, unset link and replace it with executable content."
	"As the link was previously marked as executable, execution rights should"
	"be set after turning it to a regular file."
	),
	[
	CommitChange(change_type=CommitChangeType.Delete, path="hello-world"),
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="hello",
	properties={"svn:special": None},
	data=b"#!/bin/bash\necho Hello World !",
	),
	],
	)

	# instantiate a svn loader checking after each processed revision that
	# the repository filesystem it reconstructed does not differ from a subversion
	# export of that revision
	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path, check_revision=1)

	assert loader.load() == {"status": "eventful"}
	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	)
	check_snapshot(loader.snapshot, loader.storage)


	def test_loader_svn_add_property_on_link(swh_storage, repo_url, tmp_path):

	# first commit
	add_commit(
	repo_url,
	"Add an executable file and a svn link to it.",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="hello-world",
	properties={"svn:executable": "*"},
	data=b"#!/bin/bash\necho Hello World !",
	),
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="hello",
	properties={"svn:special": "*"},
	data=b"link hello-world",
	),
	],
	)

	# second commit
	add_commit(
	repo_url,
	"Set svn:eol-style property on link",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="hello",
	properties={"svn:eol-style": "native"},
	),
	],
	)

	# instantiate a svn loader checking after each processed revision that
	# the repository filesystem it reconstructed does not differ from a subversion
	# export of that revision
	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path, check_revision=1)

	assert loader.load() == {"status": "eventful"}
	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	)
	check_snapshot(loader.snapshot, loader.storage)


	def test_loader_svn_link_parsing(swh_storage, repo_url, tmp_path):

	# first commit
	add_commit(
	repo_url,
	"Add an executable file and a svn link to it.",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="hello-world",
	properties={"svn:executable": "*"},
	data=b"#!/bin/bash\necho Hello World !",
	),
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="hello",
	properties={"svn:special": "*"},
	data=b"link hello-world",
	),
	],
	)

	# second commit
	add_commit(
	repo_url,
	"Update svn link content",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="hello",
	data=b"link hello-world\r\n",
	),
	],
	)

	# instantiate a svn loader checking after each processed revision that
	# the repository filesystem it reconstructed does not differ from a subversion
	# export of that revision
	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path, check_revision=1)

	assert loader.load() == {"status": "eventful"}
	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	)
	check_snapshot(loader.snapshot, loader.storage)


	def test_loader_svn_empty_local_dir_before_post_load(swh_storage, datadir, tmp_path):
	archive_name = "pkg-gourmet"
	archive_path = os.path.join(datadir, f"{archive_name}.tgz")
	repo_url = prepare_repository_from_archive(archive_path, archive_name, tmp_path)

	class SvnLoaderPostLoadLocalDirIsEmpty(SvnLoader):
	def post_load(self, success=True):
	if success:
	self.local_dirname_content = [
	os.path.join(root, name)
	for root, _, files in os.walk(self.svnrepo.local_dirname)
	for name in files
	]
	return super().post_load(success)

	loader = SvnLoaderPostLoadLocalDirIsEmpty(
	swh_storage, repo_url, temp_directory=tmp_path
	)

	assert loader.load() == {"status": "eventful"}

	assert loader.local_dirname_content == []

	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	snapshot=GOURMET_SNAPSHOT.id,
	)
	check_snapshot(GOURMET_SNAPSHOT, loader.storage)


	def _dump_project(tmp_path, origin_url):
	svnrdump_cmd = ["svnrdump", "dump", origin_url]
	dump_path = f"{tmp_path}/repo.dump"
	with open(dump_path, "wb") as dump_file:
	subprocess.run(svnrdump_cmd, stdout=dump_file)
	subprocess.run(["gzip", dump_path])
	return dump_path + ".gz"


	def test_loader_svn_add_property_on_directory_link(swh_storage, repo_url, tmp_path):

	# first commit
	add_commit(
	repo_url,
	"Add an executable file in a directory and a svn link to the directory.",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="code/hello-world",
	properties={"svn:executable": "*"},
	data=b"#!/bin/bash\necho Hello World !",
	),
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="hello",
	properties={"svn:special": "*"},
	data=b"link code",
	),
	],
	)

	# second commit
	add_commit(
	repo_url,
	"Set svn:eol-style property on link",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="hello",
	properties={"svn:eol-style": "native"},
	),
	],
	)

	# instantiate a svn loader checking after each processed revision that
	# the repository filesystem it reconstructed does not differ from a subversion
	# export of that revision
	loader = SvnLoader(swh_storage, repo_url, temp_directory=tmp_path, check_revision=1)

	assert loader.load() == {"status": "eventful"}
	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	)
	check_snapshot(loader.snapshot, loader.storage)


	@pytest.mark.parametrize(
	"svn_loader_cls", [SvnLoader, SvnLoaderFromDumpArchive, SvnLoaderFromRemoteDump]
	)
	def test_loader_with_subprojects(swh_storage, repo_url, tmp_path, svn_loader_cls):

	# first commit
	add_commit(
	repo_url,
	"Add first project in repository",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="project1/foo.sh",
	data=b"#!/bin/bash\necho foo",
	),
	],
	)

	# second commit
	add_commit(
	repo_url,
	"Add second project in repository",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="project2/bar.sh",
	data=b"#!/bin/bash\necho bar",
	),
	],
	)

	# third commit
	add_commit(
	repo_url,
	"Add third project in repository",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="project3/baz.sh",
	data=b"#!/bin/bash\necho baz",
	),
	],
	)

	for i in range(1, 4):
	# load each project in the repository separately and check behavior
	# is the same if origin URL has a trailing slash or not
	origin_url = f"{repo_url}/project{i}{'/' if i%2 else ''}"

	loader_params = {
	"storage": swh_storage,
	"url": origin_url,
	"origin_url": origin_url,
	"temp_directory": tmp_path,
	"incremental": True,
	"check_revision": 1,
	}

	if svn_loader_cls == SvnLoaderFromDumpArchive:
	loader_params["archive_path"] = _dump_project(tmp_path, origin_url)

	loader = svn_loader_cls(**loader_params)

	assert loader.load() == {"status": "eventful"}
	assert_last_visit_matches(
	loader.storage,
	origin_url,
	status="full",
	type="svn",
	)
	check_snapshot(loader.snapshot, loader.storage)

	if svn_loader_cls == SvnLoaderFromDumpArchive:
	loader_params["archive_path"] = _dump_project(tmp_path, origin_url)

	loader = svn_loader_cls(**loader_params)

	assert loader.load() == {"status": "uneventful"}

	# each project origin must have
	assert get_stats(loader.storage) == {
	"content": i, # one content
	"directory": 2 * i, # two directories
	"origin": i,
	"origin_visit": 2 * i, # two visits
	"release": 0,
	"revision": i, # one revision
	"skipped_content": 0,
	"snapshot": i, # one snapshot
	}


	@pytest.mark.parametrize(
	"svn_loader_cls", [SvnLoader, SvnLoaderFromDumpArchive, SvnLoaderFromRemoteDump]
	)
	def test_loader_subproject_root_dir_removal(
	swh_storage, repo_url, tmp_path, svn_loader_cls
	):

	# first commit
	add_commit(
	repo_url,
	"Add project in repository",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="project/foo.sh",
	data=b"#!/bin/bash\necho foo",
	),
	],
	)

	# second commit
	add_commit(
	repo_url,
	"Remove project root directory",
	[CommitChange(change_type=CommitChangeType.Delete, path="project/")],
	)

	# third commit
	add_commit(
	repo_url,
	"Re-add project in repository",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="project/foo.sh",
	data=b"#!/bin/bash\necho foo",
	),
	],
	)

	origin_url = f"{repo_url}/project"

	loader_params = {
	"storage": swh_storage,
	"url": origin_url,
	"origin_url": origin_url,
	"temp_directory": tmp_path,
	"incremental": True,
	"check_revision": 1,
	}

	if svn_loader_cls == SvnLoaderFromDumpArchive:
	loader_params["archive_path"] = _dump_project(tmp_path, origin_url)

	loader = svn_loader_cls(**loader_params)

	assert loader.load() == {"status": "eventful"}
	assert_last_visit_matches(
	loader.storage,
	origin_url,
	status="full",
	type="svn",
	)
	check_snapshot(loader.snapshot, loader.storage)

	if svn_loader_cls == SvnLoaderFromDumpArchive:
	loader_params["archive_path"] = _dump_project(tmp_path, origin_url)

	loader = svn_loader_cls(**loader_params)

	assert loader.load() == {"status": "uneventful"}


	@pytest.mark.parametrize("svn_loader_cls", [SvnLoader, SvnLoaderFromRemoteDump])
	def test_loader_svn_not_found_after_successful_visit(
	swh_storage, datadir, tmp_path, svn_loader_cls
	):
	archive_name = "pkg-gourmet"
	archive_path = os.path.join(datadir, f"{archive_name}.tgz")
	repo_url = prepare_repository_from_archive(archive_path, archive_name, tmp_path)

	loader = svn_loader_cls(swh_storage, repo_url, temp_directory=tmp_path)

	assert loader.load() == {"status": "eventful"}

	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	snapshot=GOURMET_SNAPSHOT.id,
	)
	check_snapshot(loader.snapshot, loader.storage)

	# simulate removal of remote repository
	shutil.rmtree(repo_url.replace("file://", ""))

	loader = svn_loader_cls(swh_storage, repo_url, temp_directory=tmp_path)

	assert loader.load() == {"status": "uneventful"}
	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="not_found",
	type="svn",
	snapshot=None,
	)


	def test_loader_svn_from_remote_dump_url_redirect(swh_storage, tmp_path, mocker):
	repo_url = "http://svn.example.org/repo"
	repo_redirect_url = "https://svn.example.org/repo"

	# mock remote subversion operations
	from swh.loader.svn.svn import client

	mocker.patch("swh.loader.svn.svn.RemoteAccess")
	init_svn_repo_from_dump = mocker.patch(
	"swh.loader.svn.loader.init_svn_repo_from_dump"
	)
	init_svn_repo_from_dump.return_value = ("", "")
	mock_client = mocker.MagicMock()
	mocker.patch.object(client, "Client", mock_client)

	class Info:
	repos_root_url = repo_redirect_url
	url = repo_redirect_url

	mock_client().info.return_value = {"repo": Info()}

	# init remote dump loader and mock some methods
	loader = SvnLoaderFromRemoteDump(swh_storage, repo_url, temp_directory=tmp_path)
	loader.dump_svn_revisions = mocker.MagicMock(return_value=("", -1))
	loader.start_from = mocker.MagicMock(return_value=(0, 0))

	# prepare loading
	loader.prepare()

	# check redirection URL has been used to dump repository
	assert loader.dump_svn_revisions.call_args_list[0][0][0] == repo_redirect_url


	@pytest.mark.parametrize("svn_loader_cls", [SvnLoader, SvnLoaderFromRemoteDump])
	def test_loader_basic_authentication_required(
	swh_storage, repo_url, tmp_path, svn_loader_cls, svnserve
	):

	# add file to empty test repo
	add_commit(
	repo_url,
	"Add project in repository",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="project/foo.sh",
	data=b"#!/bin/bash\necho foo",
	),
	],
	)

	# compute repo URLs that will be made available by svnserve
	repo_path = repo_url.replace("file://", "")
	repo_root = os.path.dirname(repo_path)
	repo_name = os.path.basename(repo_path)
	username = "anonymous"
	password = "anonymous"
	port = 12000
	repo_url_no_auth = f"svn://localhost:{port}/{repo_name}"
	repo_url = f"svn://{username}:{password}@localhost:{port}/{repo_name}"

	# disable anonymous access and require authentication on test repo
	with open(os.path.join(repo_path, "conf", "svnserve.conf"), "w") as svnserve_conf:
	svnserve_conf.write(
	textwrap.dedent(
	"""
	[general]

	# Authentication realm of the repository.
	realm = test-repository
	password-db = passwd

	# Deny all anonymous access
	anon-access = none

	# Grant authenticated users read and write privileges
	auth-access = write
	"""
	)
	)

	# add a user with read/write access on test repo
	with open(os.path.join(repo_path, "conf", "passwd"), "w") as passwd:
	passwd.write(f"[users]\n{username} = {password}")

	# execute svnserve
	svnserve(repo_root, port)

	# check loading failed with no authentication
	loader = svn_loader_cls(swh_storage, repo_url_no_auth, temp_directory=tmp_path)
	assert loader.load() == {"status": "uneventful"}

	# check loading succeeded with authentication
	loader = svn_loader_cls(swh_storage, repo_url, temp_directory=tmp_path)
	assert loader.load() == {"status": "eventful"}
	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	)

	check_snapshot(loader.snapshot, loader.storage)


	def test_loader_with_special_chars_in_svn_url(repo_url, tmp_path):
	content = b"foo"

	filename = "".join(
	itertools.chain(
	(chr(i) for i in range(32, 127)), (chr(i) for i in range(161, 256))
	)
	)

	add_commit(
	repo_url,
	"Add file with characters to quote in its name",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path=filename,
	data=content,
	),
	],
	)

	svnrepo = SvnRepo(repo_url, repo_url, tmp_path, max_content_length=10000)

	dest_path = f"{tmp_path}/file"
	svnrepo.export(f"{repo_url}/{filename}", to=dest_path)

	with open(dest_path, "rb") as f:
	assert f.read() == content


	@pytest.mark.parametrize("svn_loader_cls", [SvnLoader, SvnLoaderFromRemoteDump])
	def test_loader_repo_with_copyfrom_and_replace_operations(
	swh_storage, repo_url, tmp_path, svn_loader_cls
	):
	add_commit(
	repo_url,
	"Create trunk/data folder",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="trunk/data/foo",
	data=b"foo",
	),
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="trunk/data/bar",
	data=b"bar",
	),
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="trunk/data/baz/",
	),
	],
	)

	add_commit(
	repo_url,
	"Create trunk/project folder",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="trunk/project/",
	),
	],
	)

	add_commit(
	repo_url,
	"Create trunk/project/bar as copy of trunk/data/bar from revision 1",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="trunk/project/bar",
	copyfrom_path=repo_url + "/trunk/data/bar",
	copyfrom_rev=1,
	),
	],
	)

	add_commit(
	repo_url,
	(
	"Create trunk/project/data/ folder as a copy of /trunk/data from revision 1"
	" and replace the trunk/project/data/baz/ folder by a trunk/project/data/baz file"
	),
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="trunk/project/data/",
	copyfrom_path=repo_url + "/trunk/data/",
	copyfrom_rev=1,
	),
	CommitChange(
	change_type=CommitChangeType.Delete,
	path="trunk/project/data/baz/",
	),
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="trunk/project/data/baz",
	data=b"baz",
	),
	],
	)

	loader = svn_loader_cls(
	swh_storage, repo_url, temp_directory=tmp_path, check_revision=1
	)

	assert loader.load() == {"status": "eventful"}

	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	)
	check_snapshot(loader.snapshot, loader.storage)


	@pytest.mark.parametrize("svn_loader_cls", [SvnLoader, SvnLoaderFromRemoteDump])
	def test_loader_repo_with_copyfrom_operations_and_eol_style(
	swh_storage, repo_url, tmp_path, svn_loader_cls
	):
	add_commit(
	repo_url,
	"Create trunk/code/foo file",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="trunk/code/foo",
	data=b"foo\n",
	properties={"svn:eol-style": "CRLF"},
	),
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="branches/code/",
	),
	],
	)

	add_commit(
	repo_url,
	"Modify svn:eol-style property for the trunk/code/foo file",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="trunk/code/foo",
	properties={"svn:eol-style": "native"},
	),
	],
	)

	add_commit(
	repo_url,
	"Copy trunk/code/foo folder from revision 1",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="branches/code/foo",
	copyfrom_path=repo_url + "/trunk/code/foo",
	copyfrom_rev=1,
	),
	],
	)

	add_commit(
	repo_url,
	"Modify branches/code/foo previously copied",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="branches/code/foo",
	data=b"foo\r\nbar\n",
	),
	],
	)

	loader = svn_loader_cls(
	swh_storage, repo_url, temp_directory=tmp_path, check_revision=1
	)

	assert loader.load() == {"status": "eventful"}

	assert_last_visit_matches(
	loader.storage,
	repo_url,
	status="full",
	type="svn",
	)
	check_snapshot(loader.snapshot, loader.storage)


	def test_loader_check_tree_divergence(swh_storage, repo_url, tmp_path, caplog):
	# create sample repository
	add_commit(
	repo_url,
	"Create trunk/data folder",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="trunk/data/foo",
	data=b"foo",
	),
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="trunk/data/bar",
	data=b"bar",
	),
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="trunk/data/baz/",
	),
	],
	)

	# load it
	loader = SvnLoader(
	swh_storage,
	repo_url,
	temp_directory=tmp_path,
	debug=True,
	check_revision=1,
	)
	assert loader.load() == {"status": "eventful"}

	# export it to a temporary directory
	export_path, _ = loader.svnrepo.export_temporary(revision=1)
	export_path = os.path.join(export_path, repo_url.split("/")[-1])

	# modify some file content in the export and remove a path
	with open(os.path.join(export_path, "trunk/data/foo"), "wb") as f:
	f.write(b"baz")
	shutil.rmtree(os.path.join(export_path, "trunk/data/baz/"))

	# create directory model from the modified export
	export_dir = Directory.from_disk(path=export_path.encode())

	# ensure debug logs
	caplog.set_level(logging.DEBUG)

	# check exported tree and repository tree are diverging
	with pytest.raises(ValueError):
	loader._check_revision_divergence(1, export_dir.hash, export_dir)

	# check diverging paths have been detected and logged
	for debug_log in (
	"directory with path b'trunk' has different hash in reconstructed repository filesystem", # noqa
	"directory with path b'trunk/data' has different hash in reconstructed repository filesystem", # noqa
	"content with path b'trunk/data/foo' has different hash in reconstructed repository filesystem", # noqa
	"directory with path b'trunk/data/baz' is missing in reconstructed repository filesystem", # noqa
	"below is diff between files:",
	"@@ -1 +1 @@",
	"-foo",
	"+baz",
	):
	assert debug_log in caplog.text


	def test_loader_svnrepo_propget_on_url(swh_storage, repo_url, tmp_path):
	# create sample repository
	add_commit(
	repo_url,
	"Create files with some having svn:eol-style property set",
	[
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="trunk/data/foo",
	data=b"foo\n",
	properties={"svn:eol-style": "native"},
	),
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="trunk/data/bar",
	data=b"bar\n",
	properties={"svn:eol-style": "native"},
	),
	CommitChange(
	change_type=CommitChangeType.AddOrUpdate,
	path="trunk/data/baz",
	data=b"baz\n",
	),
	],
	)

	# load it
	loader = SvnLoader(
	swh_storage,
	repo_url,
	temp_directory=tmp_path,
	debug=True,
	check_revision=1,
	)
	assert loader.load() == {"status": "eventful"}

	foo_file_url = f"{repo_url}/trunk/data/foo"
	bar_file_url = f"{repo_url}/trunk/data/bar"
	baz_file_url = f"{repo_url}/trunk/data/baz"
	assert loader.svnrepo.propget("svn:eol-style", foo_file_url, peg_rev=1, rev=1) == {
	foo_file_url: b"native"
	}

	assert loader.svnrepo.propget(
	"svn:eol-style", repo_url, peg_rev=1, rev=1, recurse=True
	) == {
	foo_file_url: b"native",
	bar_file_url: b"native",
	}

	assert loader.svnrepo.propget("svn:eol-style", baz_file_url, peg_rev=1, rev=1) == {}

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