The Tor Browser: layout/style/test/test_animations_omta.html@deefc01c0e14 (annotated)

layout/style/test/test_animations_omta.html@deefc01c0e14 (annotated)

layout/style/test/test_animations_omta.html

Thu, 15 Jan 2015 21:03:48 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 15 Jan 2015 21:03:48 +0100
branch: TOR_BUG_9701
changeset 11: deefc01c0e14
permissions: -rw-r--r--

Integrate friendly tips from Tor colleagues to make (or not) 4.5 alpha 3;
This includes removal of overloaded (but unused) methods, and addition of
a overlooked call to DataStruct::SetData(nsISupports, uint32_t, bool.)

 <!DOCTYPE HTML>
 <html>
 <!--
 https://bugzilla.mozilla.org/show_bug.cgi?id=964646
 -->
 <!--
  ========= PLEASE KEEP THIS IN SYNC WITH test_animations.html =========
  This test mimicks the content of test_animations.html but performs tests
  specific to animations that run on the compositor thread since they require
  special (asynchronous) handling. Furthermore, these tests check that
  animations that are expected to run on the compositor thread, are actually
  doing so.
  If you are making changes to this file or to test_animations.html, please
  try to keep them consistent where appropriate.
 -->
 <head>
   <meta charset="utf-8">
   <title>Test for css3-animations running on the compositor thread (Bug
 )</title>
   <script type="application/javascript"
     src="/tests/SimpleTest/SimpleTest.js"></script>
   <script type="application/javascript"
     src="/tests/SimpleTest/paint_listener.js"></script>
   <script type="application/javascript" src="animation_utils.js"></script>
   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
   <style type="text/css">
     @keyframes transform-anim {
       to {
         transform: translate(100px);
       }
     }
     @keyframes anim1 {
 % { transform: translate(0px) }
 % { transform: translate(80px) }
 % { transform: translate(100px) }
     }
     @keyframes anim2 {
       from { opacity: 0 } to { opacity: 1 }
     }
     @keyframes anim3 {
       from { opacity: 0 } to { opacity: 1 }
     }
     @keyframes kf1 {
 % { transform: translate(50px) }
       to { transform: translate(150px) }
     }
     @keyframes kf2 {
       from { transform: translate(150px) }
 % { transform: translate(50px) }
     }
     @keyframes kf3 {
 % { transform: translate(100px) }
     }
     @keyframes kf4 {
       to, from { display: inline; transform: translate(37px) }
     }
     @keyframes kf_cascade1 {
       from { transform: translate(50px) }
 %, from { transform: translate(30px) }      /* wins: 0% */
 %, 85%, 50% { transform: translate(20px) }  /* wins: 75%, 50% */
 %, 85% { transform: translate(70px) }      /* wins: 100% */
 .1% { transform: translate(60px) }          /* wins: 85.1% */
 % { transform: translate(30px) }            /* wins: 85% */
     }
     @keyframes kf_cascade2 { from, to { opacity: 0.3 } }
     @keyframes kf_cascade2 { from, to { transform: translate(50px) } }
     @keyframes kf_cascade2 { from, to { transform: translate(100px) } }
     .target {
       /* The animation target needs geometry in order to qualify for OMTA */
       width: 100px;
       height: 100px;
       background-color: white;
     }
   </style>
 </head>
 <body>
 <a target="_blank"
   href="https://bugzilla.mozilla.org/show_bug.cgi?id=964646">Mozilla Bug
 </a>
 <div id="display"></div>
 <pre id="test">
 <script type="application/javascript">
 "use strict";
 /** Test for css3-animations running on the compositor thread (Bug 964646) **/
 // Global state
 var gAsyncTests     = [],
     gDisplay        = document.getElementById("display"),
     gDiv            = null,
     gEventsReceived = [];
 SimpleTest.waitForExplicitFinish();
 runOMTATest(function() {
   // The async test runner returns a Promise that is resolved when the
   // test is finished so we can chain them together
   gAsyncTests.reduce(function(sequence, test) {
     return sequence.then(function() { return runAsyncTest(test); });
   }, Promise.resolve() /* the start of the sequence */)
   // Final step in the sequence
   .then(function() {
     SimpleTest.finish();
   });
 }, SimpleTest.finish);
 // Takes a generator function that represents a test case. Each point in the
 // test case that waits asynchronously for some result yields a Promise that is
 // resolved when the asychronous action has completed. By chaining these
 // intermediate results together we run the test to completion.
 //
 // This method itself returns a Promise that is resolved when the generator
 // function has completed.
 //
 // This arrangement is based on add_task() which is currently only available
 // in mochitest-chrome (bug 872229). Once add_task is available in
 // mochitest-plain we can remove this function and use add_task instead.
 function runAsyncTest(test) {
   var generator;
   function step(arg) {
     var next;
     try {
       next = generator.next(arg);
     } catch (e) {
       return Promise.reject(e);
     }
     if (next.done) {
       return Promise.resolve(next.value);
     } else {
       return Promise.resolve(next.value)
              .then(step, function(err) { throw err; });
     }
   }
   // Put refresh driver under test control
   advance_clock(0);
   // Run test
   generator = test();
   return step()
   .catch(function(err) {
     ok(false, err.message);
     // Clear up the test div in case we aborted the test before doing clean-up
     if (gDiv) {
       done_div();
     }
   }).then(function() {
     // Restore clock
     SpecialPowers.DOMWindowUtils.restoreNormalRefresh();
   });
 }
 function addAsyncTest(generator) {
   gAsyncTests.push(generator);
 }
 //----------------------------------------------------------------------
 //
 // Test cases
 //
 //----------------------------------------------------------------------
 // This test is not in test_animations.html but is here to test that
 // transform animations are actually run on the compositor thread as expected.
 addAsyncTest(function *() {
   new_div("animation: transform-anim linear 300s");
   yield waitForPaints();
   advance_clock(200000);
   omta_is("transform", { tx: 100 * 2 / 3 }, RunningOn.Compositor,
           "OMTA animation is animating as expected");
   done_div();
 });
 function *testFillMode(fillMode, fillsBackwards, fillsForwards)
 {
   var style = "transform: translate(30px); animation: 10s 3s anim1 linear";
   var desc;
   if (fillMode.length > 0) {
     style += " " + fillMode;
     desc = "fill mode " + fillMode + ": ";
   } else {
     desc = "default fill mode: ";
   }
   new_div(style);
   listen();
   // Currently backwards fill is not performed on the compositor thread but we
   // should wait for paints so we can test that transform values are *not* being
   // set on the compositor thread.
   yield waitForPaints();
   if (fillsBackwards)
     omta_is("transform", { tx: 0 }, RunningOn.MainThread,
             desc + "does affect value during delay (0s)");
   else
     omta_is("transform", { tx: 30 }, RunningOn.MainThread,
             desc + "doesn't affect value during delay (0s)");
   advance_clock(2000);
   if (fillsBackwards)
     omta_is("transform", { tx: 0 }, RunningOn.MainThead,
             desc + "does affect value during delay (0s)");
   else
     omta_is("transform", { tx: 30 }, RunningOn.MainThread,
             desc + "does affect value during delay (0s)");
   check_events([], "before start in testFillMode");
   advance_clock(1000);
   check_events([{ type: "animationstart", target: gDiv,
                   bubbles: true, cancelable: false,
                   animationName: "anim1", elapsedTime: 0.0,
                   pseudoElement: "" }],
                "right after start in testFillMode");
   // If we have a backwards fill then at the start of the animation we will end
   // up applying the same value as the fill value. Various optimizations in
   // RestyleManager may filter out this meaning that the animation doesn't get
   // added to the compositor thread until the first time the value changes.
   //
   // As a result we look for this first sample on either the compositor or the
   // computed style
   yield waitForPaints();
   omta_is("transform", { tx: 0 }, RunningOn.Either,
           desc + "affects value at start of animation");
   advance_clock(125);
   // We might not add the animation to compositor until the second sample (due
   // to the optimizations mentioned above) so we should wait for paints before
   // proceeding
   yield waitForPaints();
   omta_is("transform", { tx: 2 }, RunningOn.Compositor,
           desc + "affects value during animation");
   advance_clock(2375);
   omta_is("transform", { tx: 40 }, RunningOn.Compositor,
           desc + "affects value during animation");
   advance_clock(2500);
   omta_is("transform", { tx: 80 }, RunningOn.Compositor,
           desc + "affects value during animation");
   advance_clock(2500);
   omta_is("transform", { tx: 90 }, RunningOn.Compositor,
           desc + "affects value during animation");
   advance_clock(2375);
   omta_is("transform", { tx: 99.5 }, RunningOn.Compositor,
           desc + "affects value during animation");
   check_events([], "before end in testFillMode");
   advance_clock(125);
   check_events([{ type: "animationend", target: gDiv,
                   bubbles: true, cancelable: false,
                   animationName: "anim1", elapsedTime: 10.0,
                   pseudoElement: "" }],
                "right after end in testFillMode");
   // Currently the compositor will apply a forwards fill until it gets told by
   // the main thread to clear the animation. As a result we should wait for
   // paints to be flushed before checking that the animated value does *not*
   // appear on the compositor thread.
   yield waitForPaints();
   if (fillsForwards)
     omta_is("transform", { tx: 100 }, RunningOn.MainThread,
             desc + "affects value at end of animation");
   advance_clock(10);
   if (fillsForwards)
     omta_is("transform", { tx: 100 }, RunningOn.MainThread,
             desc + "affects value after animation");
   else
     omta_is("transform", { tx: 30 }, RunningOn.MainThread,
             desc + "does not affect value after animation");
   done_div();
 }
 addAsyncTest(function() { return testFillMode("", false, false); });
 addAsyncTest(function() { return testFillMode("none", false, false); });
 addAsyncTest(function() { return testFillMode("forwards", false, true); });
 addAsyncTest(function() { return testFillMode("backwards", true, false); });
 addAsyncTest(function() { return testFillMode("both", true, true); });
 // Test that animations continue running when the animation name
 // list is changed.
 //
 // test_animations.html combines all these tests into one block but this is
 // difficult for OMTA because currently there are only two properties to which
 // we apply OMTA. Instead we break the test down into a few independent pieces
 // in order to exercise the same functionality.
 // Append to list
 addAsyncTest(function *() {
   new_div("animation: anim1 linear 10s");
   yield waitForPaints();
     omta_is("transform", { tx: 0 }, RunningOn.Either,
             "just anim1, translate at start");
   advance_clock(1000);
     omta_is("transform", { tx: 16 }, RunningOn.Compositor,
             "just anim1, translate at 1s");
   // append anim2
   gDiv.style.animation = "anim1 linear 10s, anim2 linear 10s";
   yield waitForPaintsFlushed();
     omta_is("transform", { tx: 16 }, RunningOn.Compositor,
             "anim1 + anim2, translate at 1s");
     omta_is("opacity", 0, RunningOn.Compositor,
             "anim1 + anim2, opacity at 1s");
   advance_clock(1000);
     omta_is("transform", { tx: 32 }, RunningOn.Compositor,
             "anim1 + anim2, translate at 2s");
     omta_is("opacity", 0.1, RunningOn.Compositor,
             "anim1 + anim2, opacity at 2s");
   done_div();
 });
 // Prepend to list; delete from list
 addAsyncTest(function *() {
   new_div("animation: anim1 linear 10s");
   yield waitForPaints();
     omta_is("transform", { tx: 0 }, RunningOn.Either,
             "just anim1, translate at start");
   advance_clock(1000);
     omta_is("transform", { tx: 16 }, RunningOn.Compositor,
                      "just anim1, translate at 1s");
   // prepend anim2
   gDiv.style.animation = "anim2 linear 10s, anim1 linear 10s";
   yield waitForPaintsFlushed();
     omta_is("transform", { tx: 16 }, RunningOn.Compositor,
             "anim2 + anim1, translate at 1s");
     omta_is("opacity", 0, RunningOn.Compositor,
             "anim2 + anim1, opacity at 1s");
   advance_clock(1000);
     omta_is("transform", { tx: 32 }, RunningOn.Compositor,
             "anim2 + anim1, translate at 2s");
     omta_is("opacity", 0.1, RunningOn.Compositor,
             "anim2 + anim1, opacity at 2s");
   // remove anim2 from list
   gDiv.style.animation = "anim1 linear 10s";
   yield waitForPaintsFlushed();
     omta_is("transform", { tx: 32 }, RunningOn.Compositor,
             "just anim1, translate at 2s");
     omta_is("opacity", 1, RunningOn.MainThread, "just anim1, opacity at 2s");
   advance_clock(1000);
     omta_is("transform", { tx: 48 }, RunningOn.Compositor,
             "just anim1, translate at 3s");
     omta_is("opacity", 1, RunningOn.MainThread, "just anim1, opacity at 3s");
   done_div();
 });
 // Swap elements
 addAsyncTest(function *() {
   new_div("animation: anim1 linear 10s, anim2 linear 10s");
   yield waitForPaints();
     omta_is("transform", { tx: 0 }, RunningOn.Either,
             "anim1 + anim2, translate at start");
     omta_is("opacity", 0, RunningOn.Compositor,
             "anim1 + anim2, opacity at start");
   advance_clock(1000);
     omta_is("transform", { tx: 16 }, RunningOn.Compositor,
             "anim1 + anim2, translate at 1s");
     omta_is("opacity", 0.1, RunningOn.Compositor,
             "anim1 + anim2, opacity at 1s");
   // swap anim1 and anim2, change duration of anim2
   gDiv.style.animation = "anim2 linear 5s, anim1 linear 10s";
   yield waitForPaintsFlushed();
     omta_is("transform", { tx: 16 }, RunningOn.Compositor,
             "anim2 + anim1, translate at 1s");
     omta_is("opacity", 0.2, RunningOn.Compositor,
             "anim2 + anim1, opacity at 1s");
   advance_clock(1000);
     omta_is("transform", { tx: 32 }, RunningOn.Compositor,
             "anim2 + anim1, translate at 2s");
     omta_is("opacity", 0.4, RunningOn.Compositor,
             "anim2 + anim1, opacity at 2s");
   // list anim2 twice, last duration wins, original start time still applies
   gDiv.style.animation = "anim2 linear 5s, anim1 linear 10s, anim2 linear 20s";
   yield waitForPaintsFlushed();
     omta_is("transform", { tx: 32 }, RunningOn.Compositor,
             "anim2 + anim1 + anim2, translate at 2s");
     // Bug 980769
     todo_is(SpecialPowers.DOMWindowUtils.getOMTAStyle(gDiv, "opacity"), "0.1",
             "anim2 + anim1 + anim2, opacity at 2s");
   // drop one of the anim2, and list anim3 as well, which animates
   // the same property as anim2
   gDiv.style.animation = "anim1 linear 10s, anim2 linear 20s, anim3 linear 10s";
   yield waitForPaintsFlushed();
     omta_is("transform", { tx: 32 }, RunningOn.Compositor,
             "anim1 + anim2 + anim3, translate at 2s");
     // Bug 980769
     todo_is(SpecialPowers.DOMWindowUtils.getOMTAStyle(gDiv, "opacity"), "0",
             "anim1 + anim2 + anim3, opacity at 2s");
   advance_clock(1000);
     omta_is("transform", { tx: 48 }, RunningOn.Compositor,
             "anim1 + anim2 + anim3, translate at 3s");
     // Bug 980769
     todo_is(SpecialPowers.DOMWindowUtils.getOMTAStyle(gDiv, "opacity"), "0.1",
             "anim1 + anim2 + anim3, opacity at 3s");
   // now swap the anim3 and anim2 order
   gDiv.style.animation = "anim1 linear 10s, anim3 linear 10s, anim2 linear 20s";
   yield waitForPaintsFlushed();
     omta_is("transform", { tx: 48 }, RunningOn.Compositor,
             "anim1 + anim3 + anim2, translate at 3s");
     // Bug 980769
     todo_is(SpecialPowers.DOMWindowUtils.getOMTAStyle(gDiv, "opacity"), "0.15",
             "anim1 + anim3 + anim2, opacity at 3s");
   advance_clock(2000); // (unlike test_animations.html, we seek 2s forwards here
                        // since at 4s anim2 and anim3 produce the same result so
                        // we can't tell which won.)
     omta_is("transform", { tx: 80 }, RunningOn.Compositor,
             "anim1 + anim3 + anim2, translate at 5s");
     // Bug 980769
     todo_is(SpecialPowers.DOMWindowUtils.getOMTAStyle(gDiv, "opacity"), "0.25",
             "anim1 + anim3 + anim2, opacity at 5s");
   // swap anim3 and anim2 back
   gDiv.style.animation = "anim1 linear 10s, anim2 linear 20s, anim3 linear 10s";
   yield waitForPaintsFlushed();
     omta_is("transform", { tx: 80 }, RunningOn.Compositor,
             "anim1 + anim2 + anim3, translate at 5s");
     // Bug 980769
     todo_is(SpecialPowers.DOMWindowUtils.getOMTAStyle(gDiv, "opacity"), "0.3",
             "anim1 + anim2 + anim3, opacity at 5s");
   // seek past end of anim1
   advance_clock(5100);
   yield waitForPaints();
     omta_is("transform", { tx: 0 }, RunningOn.MainThread,
             "anim1 + anim2 + anim3, translate at 10.1s");
   // Change the animation fill mode on the completed animation.
   gDiv.style.animation =
     "anim1 linear 10s forwards, anim2 linear 20s, anim3 linear 10s";
   yield waitForPaintsFlushed();
     omta_is("transform", { tx: 100 }, RunningOn.MainThread,
             "anim1 + anim2 + anim3, translate at 10.1s with fill mode");
   advance_clock(900);
     omta_is("transform", { tx: 100 }, RunningOn.MainThread,
             "anim1 + anim2 + anim3, translate at 11s with fill mode");
   // Change the animation duration on the completed animation, so it is
   // no longer completed.
   // XXX Not sure about this---there seems to be a bug in test_animations.html
   // in that it drops the fill mode but the test comment says it has a fill mode
   gDiv.style.animation = "anim1 linear 20s, anim2 linear 20s, anim3 linear 10s";
   yield waitForPaintsFlushed();
     omta_is("transform", { tx: 82 }, RunningOn.Compositor,
             "anim1 + anim2 + anim3, translate at 11s with fill mode");
     // Bug 980769 - We should get 0.9 but instead
     todo_is(SpecialPowers.DOMWindowUtils.getOMTAStyle(gDiv, "opacity"), "0.9",
             "anim1 + anim2 + anim3, opacity at 11s");
   done_div();
 });
 /*
  * css3-animations:  3. Keyframes
  * http://dev.w3.org/csswg/css3-animations/#keyframes
  */
 // Test the rules on keyframes that lack a 0% or 100% rule:
 // (simultaneously, test that reverse animations have their keyframes
 // run backwards)
 addAsyncTest(function *() {
   // 100px at 0%, 50px at 50%, 150px at 100%
   new_div("transform: translate(100px); " +
           "animation: kf1 ease 1s alternate infinite");
   advance_clock(0);
   yield waitForPaints();
   omta_is("transform", { tx: 100 }, RunningOn.Compositor, "no-0% at 0.0s");
   advance_clock(100);
   omta_is_approx("transform", { tx: 100 - 50 * gTF.ease(0.2) },
                  RunningOn.Compositor, 0.01, "no-0% at 0.1s");
   advance_clock(200);
   omta_is_approx("transform", { tx: 100 - 50 * gTF.ease(0.6) },
                  RunningOn.Compositor, 0.01, "no-0% at 0.3s");
   advance_clock(200);
   omta_is("transform", { tx: 50 }, RunningOn.Compositor, "no-0% at 0.5s");
   advance_clock(200);
   omta_is_approx("transform", { tx: 50 + 100 * gTF.ease(0.4) },
                  RunningOn.Compositor, 0.01, "no-0% at 0.7s");
   advance_clock(200);
   omta_is_approx("transform", { tx: 50 + 100 * gTF.ease(0.8) },
                  RunningOn.Compositor, 0.01, "no-0% at 0.9s");
   advance_clock(100);
   omta_is("transform", { tx: 150 }, RunningOn.Compositor, "no-0% at 1.0s");
   advance_clock(100);
   omta_is_approx("transform", { tx: 50 + 100 * gTF.ease(0.8) },
                  RunningOn.Compositor, 0.01, "no-0% at 1.1s");
   advance_clock(300);
   omta_is_approx("transform", { tx: 50 + 100 * gTF.ease(0.2) },
                  RunningOn.Compositor, 0.01, "no-0% at 1.4s");
   advance_clock(300);
   omta_is_approx("transform", { tx: 100 - 50 * gTF.ease(0.6) },
                  RunningOn.Compositor, 0.01, "no-0% at 1.7s");
   advance_clock(200);
   omta_is_approx("transform", { tx: 100 - 50 * gTF.ease(0.2) },
                  RunningOn.Compositor, 0.01, "no-0% at 1.9s");
   advance_clock(100);
   omta_is("transform", { tx: 100 }, RunningOn.Compositor, "no-0% at 2.0s");
   done_div();
   // 150px at 0%, 50px at 50%, 100px at 100%
   new_div("transform: translate(100px); " +
           "animation: kf2 ease-in 1s alternate infinite");
   yield waitForPaints();
   omta_is("transform", { tx: 150 }, RunningOn.Compositor, "no-100% at 0.0s");
   advance_clock(100);
   omta_is_approx("transform", { tx: 150 - 100 * gTF.ease_in(0.2) },
                  RunningOn.Compositor, 0.01, "no-100% at 0.1s");
   advance_clock(200);
   omta_is_approx("transform", { tx: 150 - 100 * gTF.ease_in(0.6) },
                  RunningOn.Compositor, 0.01, "no-100% at 0.3s");
   advance_clock(200);
   omta_is("transform", { tx: 50 }, RunningOn.Compositor, "no-100% at 0.5s");
   advance_clock(200);
   omta_is_approx("transform", { tx: 50 + 50 * gTF.ease_in(0.4) },
                  RunningOn.Compositor, 0.01, "no-100% at 0.7s");
   advance_clock(200);
   omta_is_approx("transform", { tx: 50 + 50 * gTF.ease_in(0.8) },
                  RunningOn.Compositor, 0.01, "no-100% at 0.9s");
   advance_clock(100);
   omta_is("transform", { tx: 100 }, RunningOn.Compositor, "no-100% at 1.0s");
   advance_clock(100);
   omta_is_approx("transform", { tx: 50 + 50 * gTF.ease_in(0.8) },
                  RunningOn.Compositor, 0.01, "no-100% at 1.1s");
   advance_clock(300);
   omta_is_approx("transform", { tx: 50 + 50 * gTF.ease_in(0.2) },
                  RunningOn.Compositor, 0.01, "no-100% at 1.4s");
   advance_clock(300);
   omta_is_approx("transform", { tx: 150 - 100 * gTF.ease_in(0.6) },
                  RunningOn.Compositor, 0.01, "no-100% at 1.7s");
   advance_clock(200);
   omta_is_approx("transform", { tx: 150 - 100 * gTF.ease_in(0.2) },
                  RunningOn.Compositor, 0.01, "no-100% at 1.9s");
   advance_clock(100);
   omta_is("transform", { tx: 150 }, RunningOn.Compositor, "no-100% at 2.0s");
   done_div();
   // 50px at 0%, 100px at 25%, 50px at 100%
   new_div("transform: translate(50px); " +
           "animation: kf3 ease-out 1s alternate infinite");
   yield waitForPaints();
   omta_is("transform", { tx: 50 }, RunningOn.Compositor,
           "no-0%-no-100% at 0.0s");
   advance_clock(50);
   omta_is_approx("transform", { tx: 50 + 50 * gTF.ease_out(0.2) },
                  RunningOn.Compositor, 0.01, "no-0%-no-100% at 0.05s");
   advance_clock(100);
   omta_is_approx("transform", { tx: 50 + 50 * gTF.ease_out(0.6) },
                  RunningOn.Compositor, 0.01, "no-0%-no-100% at 0.15s");
   advance_clock(100);
   omta_is("transform", { tx: "100px" }, RunningOn.Compositor,
           "no-0%-no-100% at 0.25s");
   advance_clock(300);
   omta_is_approx("transform", { tx: 100 - 50 * gTF.ease_out(0.4) },
                  RunningOn.Compositor, 0.01, "no-0%-no-100% at 0.55s");
   advance_clock(300);
   omta_is_approx("transform", { tx: 100 - 50 * gTF.ease_out(0.8) },
                  RunningOn.Compositor, 0.01, "no-0%-no-100% at 0.85s");
   advance_clock(150);
   omta_is("transform", { tx: 50 }, RunningOn.Compositor,
           "no-0%-no-100% at 1.0s");
   advance_clock(150);
   omta_is_approx("transform", { tx: 100 - 50 * gTF.ease_out(0.8) },
                  RunningOn.Compositor, 0.01, "no-0%-no-100% at 1.15s");
   advance_clock(450);
   omta_is_approx("transform", { tx: 100 - 50 * gTF.ease_out(0.2) },
                  RunningOn.Compositor, 0.01, "no-0%-no-100% at 1.6s");
   advance_clock(250);
   omta_is_approx("transform", { tx: 50 + 50 * gTF.ease_out(0.6) },
                  RunningOn.Compositor, 0.01, "no-0%-no-100% at 1.85s");
   advance_clock(100);
   omta_is_approx("transform", { tx: 50 + 50 * gTF.ease_out(0.2) },
                  RunningOn.Compositor, 0.01, "no-0%-no-100% at 1.95s");
   advance_clock(50);
   omta_is("transform", { tx: 50 }, RunningOn.Compositor,
           "no-0%-no-100% at 2.0s");
   done_div();
   // Test that non-animatable properties are ignored.
   // Simultaneously, test that the block is still honored, and that
   // we still override the value when two consecutive keyframes have
   // the same value.
   new_div("animation: kf4 ease 10s");
   yield waitForPaints();
   var cs = window.getComputedStyle(gDiv);
   is(cs.display, "block",
      "non-animatable properties should be ignored (linear, 0s)");
   omta_is("transform", { tx: 37 }, RunningOn.Compositor,
           "animatable properties should still apply (linear, 0s)");
   advance_clock(1000);
   is(cs.display, "block",
      "non-animatable properties should be ignored (linear, 1s)");
   omta_is("transform", { tx: 37 }, RunningOn.Compositor,
           "animatable properties should still apply (linear, 1s)");
   done_div();
   new_div("animation: kf4 step-start 10s");
   yield waitForPaints();
   cs = window.getComputedStyle(gDiv);
   is(cs.display, "block",
      "non-animatable properties should be ignored (step-start, 0s)");
   omta_is("transform", { tx: 37 }, RunningOn.Compositor,
           "animatable properties should still apply (step-start, 0s)");
   advance_clock(1000);
   is(cs.display, "block",
      "non-animatable properties should be ignored (step-start, 1s)");
   omta_is("transform", { tx: 37 }, RunningOn.Compositor,
           "animatable properties should still apply (step-start, 1s)");
   done_div();
   // Test cascading of the keyframes within an @keyframes rule.
   new_div("animation: kf_cascade1 linear 10s");
   yield waitForPaints();
   //    0%: 30px
   //   50%: 20px
   //   75%: 20px
   //   85%: 30px
   // 85.1%: 60px
   //  100%: 70px
   omta_is("transform", { tx: 30 }, RunningOn.Compositor, "kf_cascade1 at 0s");
   advance_clock(2500);
   omta_is("transform", { tx: 25 }, RunningOn.Compositor, "kf_cascade1 at 2.5s");
   advance_clock(2500);
   omta_is("transform", { tx: 20 }, RunningOn.Compositor, "kf_cascade1 at 5s");
   advance_clock(2000);
   omta_is("transform", { tx: 20 }, RunningOn.Compositor, "kf_cascade1 at 7s");
   advance_clock(500);
   omta_is("transform", { tx: 20 }, RunningOn.Compositor, "kf_cascade1 at 7.5s");
   advance_clock(500);
   omta_is("transform", { tx: 25 }, RunningOn.Compositor, "kf_cascade1 at 8s");
   advance_clock(500);
   omta_is("transform", { tx: 30 }, RunningOn.Compositor, "kf_cascade1 at 8.5s");
   advance_clock(10);
   // For some reason we get an error of 0.0003 for this test only
   omta_is_approx("transform", { tx: 60 }, RunningOn.Compositor, 0.001,
                  "kf_cascade1 at 8.51s");
   advance_clock(745);
   omta_is("transform", { tx: 65 }, RunningOn.Compositor,
           "kf_cascade1 at 9.2505s");
   done_div();
   // Test cascading of the @keyframes rules themselves.
   new_div("animation: kf_cascade2 linear 10s");
   yield waitForPaints();
   omta_is("opacity", 1, RunningOn.MainThread,
           "last @keyframes rule with transform should win");
   omta_is("transform", { tx: 100 }, RunningOn.Compositor,
           "last @keyframes rule with transform should win");
   done_div();
 });
 //----------------------------------------------------------------------
 //
 // Helper functions from test_animations.html
 //
 //----------------------------------------------------------------------
 function new_div(style) {
   if (gDiv !== null) {
     ok(false, "test author forgot to call done_div");
   }
   if (typeof(style) != "string") {
     ok(false, "test author forgot to pass style argument");
   }
   gDiv = document.createElement("div");
   gDiv.classList.add("target");
   gDiv.setAttribute("style", style);
   gDisplay.appendChild(gDiv);
   gDiv.clientTop;
 }
 function done_div() {
   if (gDiv === null) {
     ok(false, "test author forgot to call new_div");
   }
   gDisplay.removeChild(gDiv);
   gDiv = null;
 }
 function listen() {
   gEventsReceived = [];
   function listener(event) {
     gEventsReceived.push(event);
   }
   gDiv.addEventListener("animationstart", listener, false);
   gDiv.addEventListener("animationiteration", listener, false);
   gDiv.addEventListener("animationend", listener, false);
 }
 function check_events(events_expected, desc) {
   // This function checks that the list of events_expected matches
   // the received events -- but it only checks the properties that
   // are present on events_expected.
   is(gEventsReceived.length, events_expected.length,
      "number of events received for " + desc);
   for (var i = 0,
        i_end = Math.min(events_expected.length, gEventsReceived.length);
        i != i_end; ++i) {
     var exp = events_expected[i];
     var rec = gEventsReceived[i];
     for (var prop in exp) {
       if (prop == "elapsedTime") {
         // Allow floating point error.
         ok(Math.abs(rec.elapsedTime - exp.elapsedTime) < 0.000002,
            "events[" + i + "]." + prop + " for " + desc +
            " received=" + rec.elapsedTime + " expected=" + exp.elapsedTime);
       } else {
         is(rec[prop], exp[prop], "events[" + i + "]." + prop + " for " + desc);
       }
     }
   }
   for (i = events_expected.length; i < gEventsReceived.length; ++i) {
     ok(false, "unexpected " + gEventsReceived[i].type + " event for " + desc);
   }
   gEventsReceived = [];
 }
 function advance_clock(milliseconds) {
   SpecialPowers.DOMWindowUtils.advanceTimeAndRefresh(milliseconds);
 }
 //----------------------------------------------------------------------
 //
 // Helper functions for querying the compositor thread
 //
 //----------------------------------------------------------------------
 // Returns a Promise that resolves once all paints have completed
 function waitForPaints() {
   return new Promise(function(resolve, reject) {
     waitForAllPaints(resolve);
   });
 }
 // As with waitForPaints but also flushes pending style changes before waiting
 function waitForPaintsFlushed() {
   return new Promise(function(resolve, reject) {
     waitForAllPaintsFlushed(resolve);
   });
 }
 //----------------------------------------------------------------------
 //
 // Helper functions for working with animated values
 //
 //----------------------------------------------------------------------
 const RunningOn = {
   MainThread: 0,
   Compositor: 1,
   Either: 2
 };
 function omta_is(property, expected, runningOn, desc) {
   return omta_is_approx(property, expected, runningOn, 0, desc);
 }
 function omta_is_approx(property, expected, runningOn, tolerance, desc) {
   // Check input
   const omtaProperties = [ "transform", "opacity" ];
   if (omtaProperties.indexOf(property) === -1) {
     ok(false, property + " is not an OMTA property");
     return;
   }
   var isTransform = property == "transform";
   var normalize = isTransform ? convertTo3dMatrix : parseFloat;
   var compare = isTransform ?
                 matricesRoughlyEqual :
                 function(a, b, error) { return Math.abs(a - b) <= error; };
   var normalizedToString = isTransform ?
                            convert3dMatrixToString :
                            JSON.stringify;
   // Get actual values
   var compositorStr = SpecialPowers.DOMWindowUtils.getOMTAStyle(gDiv, property);
   var computedStr   = window.getComputedStyle(gDiv)[property];
   // Prepare expected value
   var expectedValue = normalize(expected);
   if (expectedValue === null) {
     ok(false, desc + ": test author should provide a valid 'expected' value" +
               " - got " + expected.toString());
     return;
   }
   // Check expected value appears in the right place
   var actualStr;
   switch (runningOn) {
     case RunningOn.Either:
       runningOn = compositorStr !== "" ?
                   RunningOn.Compositor :
                   RunningOn.MainThread;
       actualStr = compositorStr !== "" ? compositorStr : computedStr;
       break;
     case RunningOn.Compositor:
       if (compositorStr === "") {
         ok(false, desc + ": should be animating on compositor");
         return;
       }
       actualStr = compositorStr;
       break;
     default:
       if (compositorStr !== "") {
         ok(false, desc + ": should NOT be animating on compositor");
         return;
       }
       actualStr = computedStr;
       break;
   }
   // Compare animated value with expected
   var actualValue = normalize(actualStr);
   if (actualValue === null) {
     ok(false, desc + ": should return a valid result - got " + actualStr);
     return;
   }
   ok(compare(expectedValue, actualValue, tolerance),
      desc + " - got " + actualStr + ", expected " +
      normalizedToString(expectedValue));
   // For compositor animations do an additional check that they match
   // the value calculated on the main thread
   if (runningOn === RunningOn.Compositor) {
     var computedValue = normalize(computedStr);
     if (computedValue === null) {
       ok(false, desc + ": test framework should parse computed style" +
                 " - got " + computedStr);
       return;
     }
     ok(compare(computedValue, actualValue, 0),
        desc + ": OMTA style and computed style should be equal" +
        " - OMTA " + actualStr + ", computed " + computedStr);
   }
 }
 function matricesRoughlyEqual(a, b, tolerance) {
   tolerance = tolerance || 0.0001;
   for (var i = 0; i < 4; i++) {
     for (var j = 0; j < 4; j++) {
       if (Math.abs(a[i][j] - b[i][j]) > tolerance)
         return false;
     }
   }
   return true;
 }
 // Converts something representing an transform into a 3d matrix in column-major
 // order.
 // The following are supported:
 //  "matrix(...)"
 //  "matrix3d(...)"
 //  [ 1, 0, 0, ... ]
 //  { a: 1, ty: 23 } etc.
 function convertTo3dMatrix(matrixLike) {
   if (typeof(matrixLike) == "string") {
     return convertStringTo3dMatrix(matrixLike);
   } else if (Array.isArray(matrixLike)) {
     return convertArrayTo3dMatrix(matrixLike);
   } else if (typeof(matrixLike) == "object") {
     return convertObjectTo3dMatrix(matrixLike);
   } else {
     return null;
   }
 }
 // Converts strings of the format "matrix(...)" and "matrix3d(...)" to a 3d
 // matrix
 function convertStringTo3dMatrix(str) {
   if (str == "none")
     return convertArrayTo3dMatrix([1, 0, 0, 1, 0, 0]);
   var result = str.match("^matrix(3d)?\\(");
   if (result === null)
     return null;
   return convertArrayTo3dMatrix(
       str.substring(result[0].length, str.length-1)
          .split(",")
          .map(function(component) {
            return Number(component);
          })
     );
 }
 // Takes an array of numbers of length 6 (2d matrix) or 16 (3d matrix)
 // representing a matrix specified in column-major order and returns a 3d matrix
 // represented as an array of arrays
 function convertArrayTo3dMatrix(array) {
   if (array.length == 6) {
     return convertObjectTo3dMatrix(
       { a: array[0], b: array[1],
         c: array[2], d: array[3],
         e: array[4], f: array[5] } );
   } else if (array.length == 16) {
     return [
       array.slice(0, 3),
       array.slice(4, 7),
       array.slice(8, 11),
       array.slice(12, 15)
     ];
   } else {
     return null;
   }
 }
 // Takes an object of the form { a: 1.1, e: 23 } and builds up a 3d matrix
 // with unspecified values filled in with identity values.
 function convertObjectTo3dMatrix(obj) {
   return [
     [
       obj.a || obj.sx || obj.m11 || 1,
       obj.b || obj.m12 || 0,
       obj.m13 || 0,
       obj.m14 || 0
     ], [
       obj.c || obj.m21 || 0,
       obj.d || obj.sy || obj.m22 || 1,
       obj.m23 || 0,
       obj.m24 || 0
     ], [
       obj.m31 || 0,
       obj.m32 || 0,
       obj.sz || obj.m33 || 1,
       obj.m34 || 0
     ], [
       obj.e || obj.tx || obj.m41 || 0,
       obj.f || obj.ty || obj.m42 || 0,
       obj.tz || obj.m43 || 0,
       obj.m44 || 1
     ]
   ];
 }
 function convert3dMatrixToString(matrix) {
   if (is2d(matrix)) {
     return "matrix(" +
            [ matrix[0][0], matrix[0][1],
              matrix[1][0], matrix[1][1],
              matrix[3][0], matrix[3][1] ].join(", ") + ")";
   } else {
     return "matrix3d(" +
             matrix.reduce(function(outer, inner) {
                 return outer.concat(inner);
             }).join(", ") + ")";
   }
 }
 function is2d(matrix) {
   return matrix[0][2] === 0 && matrix[0][3] === 0 &&
          matrix[1][2] === 0 && matrix[1][3] === 0 &&
          matrix[2][0] === 0 && matrix[2][1] === 0 &&
          matrix[2][2] === 1 && matrix[2][3] === 0 &&
          matrix[3][2] === 0 && matrix[3][3] === 1;
 }
 </script>
 </html>

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layout/style/test/test_animations_omta.html