add_task(async function() { let tabs = [ gBrowser.selectedTab, BrowserTestUtils.addTab(gBrowser) ]; // The first tab has an autofocused element. // The second tab is exactly like the first one without the autofocus. let testingList = [ { uri: "data:text/html,", tagName: "INPUT"}, ]; // Set the focus to the first tab. tabs[0].linkedBrowser.focus(); // Load the second tab in the background. let loadedPromise = BrowserTestUtils.browserLoaded(tabs[1].linkedBrowser); BrowserTestUtils.loadURI(tabs[1].linkedBrowser, testingList[0].uri); await loadedPromise; for (var i = 0; i < testingList.length; ++i) { // Get active element in the tab. let tagName = await ContentTask.spawn(tabs[i + 1].linkedBrowser, null, async function() { return content.document.activeElement.tagName; }); is(tagName, testingList[i].tagName, "The background tab's focused element should be " + testingList[i].tagName); } is(document.activeElement, tabs[0].linkedBrowser, "The background tab's focused element should not cause the tab to be focused"); // Cleaning up. for (let i = 1; i < tabs.length; i++) { BrowserTestUtils.removeTab(tabs[i]); } });