gecko-dev/netwerk/test/unit/test_bug652761.js

// This is just a crashtest for a url that is rejected at parse time (port 80,000)

"use strict";

function run_test() {
  // Bug 1301621 makes invalid ports throw
  Assert.throws(
    () => {
      var chan = NetUtil.newChannel({
        uri: "http://localhost:80000/",
        loadUsingSystemPrincipal: true,
      });
    },
    /NS_ERROR_MALFORMED_URI/,
    "invalid port"
  );

  do_test_finished();
}