Dactyloidae/toolkit/mozapps/webextensions/test/xpinstall/browser_badargs2.js

// ----------------------------------------------------------------------------
// Test whether passing an undefined url InstallTrigger.install throws an
// exception
function test() {
  waitForExplicitFinish();

  var triggers = encodeURIComponent(JSON.stringify({
    "Unsigned XPI": {
      URL: undefined
    }
  }));
  gBrowser.selectedTab = gBrowser.addTab();

  ContentTask.spawn(gBrowser.selectedBrowser, null, function() {
    return new Promise(resolve => {
      addEventListener("load", () => {
        content.addEventListener("InstallTriggered", () => {
          resolve(content.document.getElementById("return").textContent);
        });
      }, true);
    });
  }).then(page_loaded);

  // In non-e10s the exception in the content page would trigger a test failure
  if (!gMultiProcessBrowser)
    expectUncaughtException();

  gBrowser.loadURI(TESTROOT + "installtrigger.html?" + triggers);
}

function page_loaded(result) {
  is(result, "exception", "installTrigger should have failed");

  // In non-e10s the exception from the page is thrown after the event so we
  // have to spin the event loop to make sure it arrives so expectUncaughtException
  // sees it.
  executeSoon(() => {
    gBrowser.removeCurrentTab();
    finish();
  });
}
// ----------------------------------------------------------------------------