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Diffstat (limited to 'dom/events/test/test_bug574663.html')
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diff --git a/dom/events/test/test_bug574663.html b/dom/events/test/test_bug574663.html new file mode 100644 index 0000000000..332bddbf1a --- /dev/null +++ b/dom/events/test/test_bug574663.html @@ -0,0 +1,194 @@ +<!DOCTYPE HTML> +<html> +<!-- +https://bugzilla.mozilla.org/show_bug.cgi?id=574663 +--> +<head> + <title>Test for Bug 574663</title> + <script src="/tests/SimpleTest/SimpleTest.js"></script> + <script src="/tests/SimpleTest/EventUtils.js"></script> + <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> +</head> +<body> +<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=574663">Mozilla Bug 574663</a> +<p id="display"></p> +<div id="content" style="display: none"> + +</div> +<pre id="test"> +<script> + +/** Test for Bug 574663 **/ + +// SimpleTest's paint_listener does not work on other windows, so we inline +// a smaller version here. +function waitForPaint(win, utils, callback) { + win.document.documentElement.getBoundingClientRect(); + if (!utils.isMozAfterPaintPending) { + win.requestAnimationFrame(function() { + setTimeout(callback); + }); + return; + } + + var onpaint = function() { + if (!utils.isMozAfterPaintPending) { + win.removeEventListener("MozAfterPaint", onpaint); + callback(); + return; + } + if (utils.isTestControllingRefreshes) { + utils.advanceTimeAndRefresh(0); + } + } + win.addEventListener("MozAfterPaint", onpaint); + if (utils.isTestControllingRefreshes) { + utils.advanceTimeAndRefresh(0); + } +} + +// This is a magic number representing how many device pixels we are attempting to +// scroll or zoom. We use it for sending the wheel events, but we don't actually +// check that we have scrolled by that amount. +var kDelta = 3; + +function sendTouchpadScrollMotion(scrollbox, direction, ctrl, momentum, callback) { + var win = scrollbox.ownerDocument.defaultView; + let winUtils = SpecialPowers.getDOMWindowUtils(win); + + let event = { + deltaMode: WheelEvent.DOM_DELTA_PIXEL, + deltaY: direction * kDelta, + lineOrPageDeltaY: direction, + ctrlKey: ctrl, + isMomentum: momentum + }; + + // Construct a promise that will resolve when either scroll or zoom has changed. + // --- Intermittent Warning --- + // Two wheel events are sent, but our promise resolves when any change has been + // made to scroll or zoom. That makes it possible that the effect of the second + // event may not yet be applied when the promise resolves. This shouldn't lead + // to any errors, since the two wheel events are moving in the same direction, + // and our later checks will only ensure that the value has changed from its + // initial value. This was done intentionally, because attempting to wait after + // both events yields problems when the second event has no effect, which does + // happen in testing. It's not clear why this is happening. Since the testing + // pattern is scroll (twice), then scroll back (twice), it's possible that the + // first scroll back event is sufficient to return the scrollbox to its minimal + // scrollTop position, and so the second event doesn't scroll any further. + const initialZoom = SpecialPowers.getFullZoom(win); + const initialScroll = scrollbox.scrollTop; + + const effectOfWheelEvent = SimpleTest.promiseWaitForCondition(() => { + return ((SpecialPowers.getFullZoom(win) != initialZoom) || (scrollbox.scrollTop != initialScroll)); + }, "Mouse wheel should have caused us to either zoom or scroll."); + + synthesizeWheel(scrollbox, 10, 10, event, win); + + // then additional pixel scroll + event.lineOrPageDeltaY = 0; + synthesizeWheel(scrollbox, 10, 10, event, win); + + effectOfWheelEvent.then(callback); +} + +function runTest() { + var win = open('bug574663.html', '_blank', 'width=300,height=300'); + let winUtils = SpecialPowers.getDOMWindowUtils(win); + + let waitUntilPainted = function(callback) { + // Until the first non-blank paint, the parent will set the opacity of our + // browser to 0 using the 'blank' attribute. + // Until the blank attribute is removed, we can't send scroll events. + SimpleTest.waitForFocus(function() { + /* eslint-disable no-shadow */ + let chromeScript = SpecialPowers.loadChromeScript(_ => { + /* eslint-env mozilla/chrome-script */ + let win = Services.wm.getMostRecentWindow("navigator:browser"); + win.requestAnimationFrame(() => { + win.gBrowser.selectedBrowser.removeAttribute("blank"); + win.requestAnimationFrame(() => { + sendAsyncMessage("blank-attribute-removed"); + }); + }); + }); + /* eslint-enable no-shadow */ + chromeScript.promiseOneMessage("blank-attribute-removed").then(() => { + chromeScript.destroy(); + waitForPaint(win, winUtils, callback); + }); + }, win); + }; + + waitUntilPainted(function () { + var scrollbox = win.document.getElementById("scrollbox"); + let outstandingTests = [ + [false, false], + [false, true], + [true, false], + [true, true], + ]; + + // grab the refresh driver, since we want to make sure + // async scrolls happen in deterministic time + winUtils.advanceTimeAndRefresh(1000); + + function nextTest() { + let [ctrlKey, isMomentum] = outstandingTests.shift(); + let scrollTopBefore = scrollbox.scrollTop; + let zoomFactorBefore = SpecialPowers.getFullZoom(win); + + let check = function() { + if (!ctrlKey) { + let postfix = isMomentum ? ", even after releasing the touchpad" : ""; + // Normal scroll: scroll + is(SpecialPowers.getFullZoom(win), zoomFactorBefore, "Normal scrolling shouldn't change zoom" + postfix); + isnot(scrollbox.scrollTop, scrollTopBefore, + "Normal scrolling should scroll" + postfix); + } else { + if (!isMomentum) { + isnot(SpecialPowers.getFullZoom(win), zoomFactorBefore, "Ctrl-scrolling should zoom while the user is touching the touchpad"); + is(scrollbox.scrollTop, scrollTopBefore, "Ctrl-scrolling shouldn't scroll while the user is touching the touchpad"); + } else { + is(SpecialPowers.getFullZoom(win), zoomFactorBefore, "Momentum scrolling shouldn't zoom, even when pressing Ctrl"); + isnot(scrollbox.scrollTop, scrollTopBefore, + "Momentum scrolling should scroll, even when pressing Ctrl"); + } + } + + if (!outstandingTests.length) { + winUtils.restoreNormalRefresh(); + win.close(); + SimpleTest.finish(); + return; + } + + // Revert the effect for the next test. + sendTouchpadScrollMotion(scrollbox, -1, ctrlKey, isMomentum, function() { + setTimeout(nextTest, 0); + }); + } + + sendTouchpadScrollMotion(scrollbox, 1, ctrlKey, isMomentum, check); + } + nextTest(); + }); +} + +window.onload = function() { + SpecialPowers.pushPrefEnv({ + "set":[["general.smoothScroll", false], + ["mousewheel.acceleration.start", -1], + ["mousewheel.system_scroll_override.enabled", false], + ["mousewheel.with_control.action", 3], + ["test.events.async.enabled", true]]}, runTest); +} + +SimpleTest.waitForExplicitFinish(); + +</script> +</pre> + +</body> +</html> |