add_task(async function () { let keyUps = 0; await BrowserTestUtils.openNewForegroundTab( gBrowser, "data:text/html," ); gURLBar.focus(); window.addEventListener( "keyup", function (event) { if (event.originalTarget == gURLBar.inputField) { keyUps++; } }, { capture: true, once: true } ); gURLBar.addEventListener( "keydown", function (event) { gBrowser.selectedBrowser.focus(); }, { capture: true, once: true } ); EventUtils.sendString("v"); is(keyUps, 1, "Key up fired at url bar"); gBrowser.removeCurrentTab(); });