var url = "https://example.com/browser/toolkit/content/tests/browser/file_contentTitle.html";

add_task(async function() {
  let tab = gBrowser.selectedTab = BrowserTestUtils.addTab(gBrowser, url);
  await BrowserTestUtils.waitForContentEvent(tab.linkedBrowser, "TestLocationChange", true, null, true);

  is(gBrowser.contentTitle, "Test Page", "Should have the right title.");

  gBrowser.removeTab(tab);
});