def _wvdial_log(self) -> Path:
wvdial_log = self._state_dir / 'wvdial.log'
backup(wvdial_log)
wvdial_log.write_bytes(b'')
return wvdial_log
def test_backup(self):
fobj = NamedTemporaryFile(delete=False)
fobj.close()
path = Path(fobj.name)
try:
path.write_bytes(b'foo\n')
backup(path)
path.write_bytes(b'bar')
backup(fobj.name)
path.write_bytes(b'\nbaz')
backup_path = backup(fobj.name)
self.assertIsNotNone(backup_path)
self.assertTrue(backup_path.is_file())
with GzipFile(str(backup_path), 'rb') as fobj:
self.assertEqual(fobj.read(), b'foo\nbar\nbaz')
finally:
remove(fobj.name)
def test_backup_without_file(self):
path = '/does/not/exist.txt'
backup_path = backup(path, suffix='.old')
self.assertIsNone(backup_path)
self.assertFalse(Path('{}.old'.format(path)).is_file())