test: compare full arg_list in chroot context test

- Add an extra call to `/bin/false` and explicitly set the `check`
  argument for both `run()` calls.
- Compare full call_args_list.  This checks that all the options are as
  expected, that the `check` argument is set properly, and that the full
  order of all the calls is as expected, including the chroot path.

Co-authored-by: Michael Vogt <michael.vogt@gmail.com>
This commit is contained in:
Achilleas Koutsou 2024-08-27 14:35:35 +02:00 committed by Brian C. Lane
parent 1093b5eeb2
commit 83fcc8a0b1

View file

@ -2,7 +2,8 @@
# Test for util/chroot.py
#
from unittest.mock import patch
import os
from unittest.mock import call, patch
from osbuild.util.chroot import Chroot
@ -18,18 +19,24 @@ class RunReturn:
@patch("subprocess.run", return_value=RunReturn())
def test_chroot_context(mocked_run):
def test_chroot_context(mocked_run, tmp_path):
with Chroot("") as chroot: # the path doesn't matter since nothing is actually running
chroot.run(["/bin/true"])
with Chroot(os.fspath(tmp_path)) as chroot:
chroot.run(["/bin/true"], check=True)
chroot.run(["/bin/false"], check=False)
# We expect 7 calls to run(): 3 mount + chroot + 3 umount
expected_cmds = ["/usr/bin/mount"] * 3 + ["/usr/sbin/chroot"] + ["/usr/bin/umount"] * 3
assert mocked_run.call_count == len(expected_cmds)
assert mocked_run.call_args_list == [
call(["/usr/bin/mount", "-t", "proc", "-o", "nosuid,noexec,nodev",
"proc", os.fspath(tmp_path / "proc")], check=True),
call(["/usr/bin/mount", "-t", "devtmpfs", "-o", "mode=0755,noexec,nosuid,strictatime",
"devtmpfs", os.fspath(tmp_path / "dev")], check=True),
call(["/usr/bin/mount", "-t", "sysfs", "-o", "nosuid,noexec,nodev",
"sysfs", os.fspath(tmp_path / "sys")], check=True),
cmds = []
for call in mocked_run.call_args_list:
argv = call.args[0]
cmds.append(argv[0])
call(["/usr/sbin/chroot", os.fspath(tmp_path), "/bin/true"], check=True),
call(["/usr/sbin/chroot", os.fspath(tmp_path), "/bin/false"], check=False),
assert cmds == expected_cmds
call(["/usr/bin/umount", "--lazy", os.fspath(tmp_path / "proc")], check=False),
call(["/usr/bin/umount", "--lazy", os.fspath(tmp_path / "dev")], check=False),
call(["/usr/bin/umount", "--lazy", os.fspath(tmp_path / "sys")], check=False),
]