forked from mirrors/gecko-dev
79 lines
2.4 KiB
JavaScript
79 lines
2.4 KiB
JavaScript
/* Any copyright is dedicated to the Public Domain.
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http://creativecommons.org/publicdomain/zero/1.0/ */
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"use strict";
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/*
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* This test ensures that there is no unexpected flicker
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* on the first window opened during startup.
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*/
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add_task(async function() {
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let startupRecorder = Cc["@mozilla.org/test/startuprecorder;1"].getService()
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.wrappedJSObject;
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await startupRecorder.done;
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// Ensure all the frame data is in the test compartment to avoid traversing
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// a cross compartment wrapper for each pixel.
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let frames = Cu.cloneInto(startupRecorder.data.frames, {});
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ok(!!frames.length, "Should have captured some frames.");
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let unexpectedRects = 0;
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let alreadyFocused = false;
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for (let i = 1; i < frames.length; ++i) {
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let frame = frames[i],
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previousFrame = frames[i - 1];
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let rects = compareFrames(frame, previousFrame);
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// The first screenshot we get in OSX / Windows shows an unfocused browser
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// window for some reason. See bug 1445161.
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//
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// We'll assume the changes we are seeing are due to this focus change if
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// there are at least 5 areas that changed near the top of the screen, but
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// will only ignore this once (hence the alreadyFocused variable).
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if (!alreadyFocused && rects.length > 5 && rects.every(r => r.y2 < 100)) {
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alreadyFocused = true;
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todo(
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false,
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"bug 1445161 - the window should be focused at first paint, " +
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rects.toSource()
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);
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continue;
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}
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rects = rects.filter(rect => {
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let width = frame.width;
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let exceptions = [
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/**
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* Please don't add anything new unless justified!
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*/
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];
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let rectText = `${rect.toSource()}, window width: ${width}`;
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for (let e of exceptions) {
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if (e.condition(rect)) {
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todo(false, e.name + ", " + rectText);
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return false;
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}
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}
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ok(false, "unexpected changed rect: " + rectText);
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return true;
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});
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if (!rects.length) {
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info("ignoring identical frame");
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continue;
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}
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// Before dumping a frame with unexpected differences for the first time,
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// ensure at least one previous frame has been logged so that it's possible
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// to see the differences when examining the log.
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if (!unexpectedRects) {
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dumpFrame(previousFrame);
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}
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unexpectedRects += rects.length;
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dumpFrame(frame);
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}
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is(unexpectedRects, 0, "should have 0 unknown flickering areas");
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});
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