forked from mirrors/gecko-dev
66 lines
2.6 KiB
JavaScript
66 lines
2.6 KiB
JavaScript
add_task(async function() {
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const kPrefName_AutoScroll = "general.autoScroll";
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Services.prefs.setBoolPref(kPrefName_AutoScroll, false);
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let dataUri = 'data:text/html,<html><body id="i" style="overflow-y: scroll"><div style="height: 2000px"></div>\
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<iframe id="iframe" style="display: none;"></iframe>\
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</body></html>';
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let loadedPromise = BrowserTestUtils.browserLoaded(gBrowser.selectedBrowser);
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gBrowser.loadURI(dataUri);
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await loadedPromise;
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await BrowserTestUtils.synthesizeMouse("#i", 50, 50, { button: 1 },
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gBrowser.selectedBrowser);
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await ContentTask.spawn(gBrowser.selectedBrowser, { }, async function() {
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var iframe = content.document.getElementById("iframe");
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if (iframe) {
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var e = new iframe.contentWindow.PageTransitionEvent("pagehide",
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{ bubbles: true,
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cancelable: true,
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persisted: false });
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iframe.contentDocument.dispatchEvent(e);
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iframe.contentDocument.documentElement.dispatchEvent(e);
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}
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});
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await BrowserTestUtils.synthesizeMouse("#i", 100, 100,
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{ type: "mousemove", clickCount: "0" },
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gBrowser.selectedBrowser);
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// If scrolling didn't work, we wouldn't do any redraws and thus time out, so
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// request and force redraws to get the chance to check for scrolling at all.
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await new Promise(resolve => window.requestAnimationFrame(resolve));
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let msg = await ContentTask.spawn(gBrowser.selectedBrowser, { }, async function() {
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// Skip the first animation frame callback as it's the same callback that
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// the browser uses to kick off the scrolling.
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return new Promise(resolve => {
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function checkScroll() {
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let msg = "";
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let elem = content.document.getElementById("i");
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if (elem.scrollTop != 0) {
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msg += "element should not have scrolled vertically";
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}
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if (elem.scrollLeft != 0) {
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msg += "element should not have scrolled horizontally";
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}
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resolve(msg);
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}
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content.requestAnimationFrame(checkScroll);
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});
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});
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ok(!msg, "element scroll " + msg);
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// restore the changed prefs
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if (Services.prefs.prefHasUserValue(kPrefName_AutoScroll))
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Services.prefs.clearUserPref(kPrefName_AutoScroll);
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// wait for focus to fix a failure in the next test if the latter runs too soon.
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await SimpleTest.promiseFocus();
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});
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