let num_bytes_read = file.read(&mut listing_raw).unwrap();
let expected_bytes = b"\
-2020-01-07 19:27:30 1\n";
+2020-01-07 19:27:30 4K 1\n";
assert_eq!(String::from_utf8(expected_bytes.to_vec()).unwrap(),
String::from_utf8(listing_raw[0..num_bytes_read].to_vec()).unwrap());
let num_bytes_read = file.read(&mut listing_raw).unwrap();
let expected_bytes = b"\
-2020-01-09 12:11:33 1\n";
+2020-01-09 12:11:33 8K 1\n";
assert_eq!(String::from_utf8(expected_bytes.to_vec()).unwrap(),
String::from_utf8(listing_raw[0..num_bytes_read].to_vec()).unwrap());