gecko/toolkit/mozapps/extensions/test/xpinstall/browser_empty.js

// ----------------------------------------------------------------------------
// Test whether an install fails when there is no install script present.
function test() {
  Harness.downloadFailedCallback = download_failed;
  Harness.installsCompletedCallback = finish_test;
  Harness.setup();

  var pm = Services.perms;
  pm.add(makeURI("http://example.com/"), "install", pm.ALLOW_ACTION);

  var triggers = encodeURIComponent(JSON.stringify({
    "Empty XPI": TESTROOT + "empty.xpi"
  }));
  gBrowser.selectedTab = gBrowser.addTab();
  gBrowser.loadURI(TESTROOT + "installtrigger.html?" + triggers);
}

function download_failed(install, status) {
  is(status, AddonManager.ERROR_CORRUPT_FILE, "Install should fail");
}

function finish_test(count) {
  is(count, 0, "No add-ons should have been installed");
  Services.perms.remove("example.com", "install");

  gBrowser.removeCurrentTab();
  Harness.finish();
}