This paragraph has a tooltip.
" + "This paragraph doesn't have tooltip.
"; let tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, url); let browser = gBrowser.selectedBrowser; await new Promise(resolve => { SpecialPowers.pushPrefEnv({"set": [["ui.tooltipDelay", 0]]}, resolve); }); let popupShownPromise = BrowserTestUtils.waitForEvent(document, "popupshown", false, event => { is(event.originalTarget.localName, "tooltip", "tooltip is showing"); return true; }); let popupHiddenPromise = BrowserTestUtils.waitForEvent(document, "popuphidden", false, event => { is(event.originalTarget.localName, "tooltip", "tooltip is hidden"); return true; }); // Send a mousemove at a known position to start the test. await BrowserTestUtils.synthesizeMouseAtCenter("#p2", { type: "mousemove" }, browser); await BrowserTestUtils.synthesizeMouseAtCenter("#p1", { type: "mousemove" }, browser); await popupShownPromise; await BrowserTestUtils.synthesizeMouseAtCenter("#p2", { type: "mousemove" }, browser); await popupHiddenPromise; gBrowser.removeCurrentTab(); });