use contextlib.chdir

Signed-off-by: Arthur Zamarin <arthurzam@gentoo.org>

Author: arthurzam

tests/scripts/test_pkgdev_commit.py

@@ -1,16 +1,18 @@
 import os
 import shutil
 import textwrap
+from contextlib import chdir
 from datetime import datetime
 from functools import partial
 from io import StringIO
 from unittest.mock import patch
 
 import pytest
+from snakeoil.contexts import os_environ
+from snakeoil.osutils import pjoin
+
 from pkgdev.mangle import copyright_regex, keywords_regex
 from pkgdev.scripts import run
-from snakeoil.contexts import chdir, os_environ
-from snakeoil.osutils import pjoin
 
 
 class TestPkgdevCommitParseArgs:

tests/scripts/test_pkgdev_manifest.py

@@ -1,12 +1,13 @@
+from contextlib import chdir
 from functools import partial
 from typing import List, Set
 from unittest.mock import patch
 
 import pytest
-from pkgdev.scripts import run
-from snakeoil.contexts import chdir
 from snakeoil.osutils import pjoin
 
+from pkgdev.scripts import run
+
 
 class TestPkgdevManifestParseArgs:
     def test_non_repo_cwd(self, capsys, tool):

tests/scripts/test_pkgdev_mask.py

@@ -1,17 +1,19 @@
 import os
 import sys
 import textwrap
+from contextlib import chdir
 from datetime import datetime, timedelta, timezone
 from functools import partial
 from pathlib import Path
 from unittest.mock import patch
 
 import pytest
 from pkgcore.ebuild.atom import atom as atom_cls
-from pkgdev.scripts import run
-from snakeoil.contexts import chdir, os_environ
+from snakeoil.contexts import os_environ
 from snakeoil.osutils import pjoin
 
+from pkgdev.scripts import run
+
 
 class TestPkgdevMaskParseArgs:
     def test_non_repo_cwd(self, capsys, tool):

tests/scripts/test_pkgdev_push.py

@@ -1,14 +1,15 @@
 import os
 import textwrap
+from contextlib import chdir
 from functools import partial
 from io import StringIO
 from unittest.mock import patch
 
 import pytest
-from pkgdev.scripts import run
-from snakeoil.contexts import chdir
 from snakeoil.osutils import pjoin
 
+from pkgdev.scripts import run
+
 
 class TestPkgdevPushParseArgs:
     def test_non_repo_cwd(self, capsys, tool):

tests/scripts/test_pkgdev_showkw.py

@@ -1,10 +1,11 @@
 import textwrap
+from contextlib import chdir
 from functools import partial
 from typing import List, NamedTuple
 from unittest.mock import patch
 
 import pytest
-from snakeoil.contexts import chdir, os_environ
+from snakeoil.contexts import os_environ
 
 from pkgdev.scripts import run
 

tests/test_git.py

@@ -1,9 +1,10 @@
 import subprocess
+from contextlib import chdir
 from unittest.mock import patch
 
 import pytest
 from snakeoil.cli.exceptions import UserException
-from snakeoil.contexts import chdir
+
 from pkgdev import git