michael@0: function run_test() {
michael@0:   const zipCache = Components.classes["@mozilla.org/libjar/zip-reader-cache;1"]
michael@0:                              .createInstance(Components.interfaces.nsIZipReaderCache);
michael@0:   zipCache.init(1024);
michael@0:   try {
michael@0:     zipCache.getZip(null);
michael@0:     do_throw("Shouldn't get here!");
michael@0:   } catch (e if ((e instanceof Components.interfaces.nsIException) &&
michael@0:                  (e.result == Components.results.NS_ERROR_INVALID_POINTER))) {
michael@0:     // do nothing, this test passes
michael@0:   }
michael@0: }