gecko-dev/modules/libjar/test/unit/test_bug379841.js

// Regression test for bug 379841 - nsIZipReader's last modified time ignores seconds

const Cc = Components.classes;
const Ci = Components.interfaces;
const path = "data/test_bug379841.zip";
// Retrieved time should be within 2 seconds of original file's time.
const MAX_TIME_DIFF = 2000000;

var ENTRY_NAME = "test";
// Actual time of file was 07 May 2007 13:35:49 UTC
var ENTRY_TIME = new Date(Date.UTC(2007, 4, 7, 13, 35, 49, 0));

function run_test() {
  var file = do_get_file(path);
  var zipReader = Cc["@mozilla.org/libjar/zip-reader;1"].
                  createInstance(Ci.nsIZipReader);
  zipReader.open(file);
  var entry = zipReader.getEntry(ENTRY_NAME);
  var diff = Math.abs(entry.lastModifiedTime - ENTRY_TIME.getTime()*1000);
  zipReader.close();
  if (diff >= MAX_TIME_DIFF)
    do_throw(diff);
}