def _verify_ref(url, ref, enforce_sha):
# Do a checkout in a temporary directory
msg = 'Cloning "{0}" to verify ref "{1}"'.format(url, ref)
tty.info(msg, stream=sys.stderr)
git = executable.which('git', required=True)
with fs.temporary_dir():
git('clone', '-q', url, '.')
sha = git('rev-parse',
'-q',
ref + '^{commit}',
output=str,
error=os.devnull,
fail_on_error=False)
if git.returncode:
msg = '"{0}" is not a valid reference for "{1}"'
raise RuntimeError(msg.format(sha, url))
if enforce_sha:
ref = sha.strip()
return ref
def test_temporary_dir_context_manager():
previous_dir = os.path.realpath(os.getcwd())
with fs.temporary_dir() as tmp_dir:
assert previous_dir != os.path.realpath(os.getcwd())
assert os.path.realpath(str(tmp_dir)) == os.path.realpath(os.getcwd())
