/modules/libjar/test/unit/test_bug453254.js

 1function run_test() {
 2  const zipCache = Components.classes["@mozilla.org/libjar/zip-reader-cache;1"]
 3                             .createInstance(Components.interfaces.nsIZipReaderCache);
 4  zipCache.init(1024);
 5  try {
 6    zipCache.getZip(null);
 7    do_throw("Shouldn't get here!");
 8  } catch (e if ((e instanceof Components.interfaces.nsIException) &&
 9                 (e.result == Components.results.NS_ERROR_INVALID_POINTER))) {
10    // do nothing, this test passes
11  }
12}