The Tor Browser: layout/style/test/test_transitions.html@6474c204b198 (annotated)

layout/style/test/test_transitions.html@6474c204b198 (annotated)

layout/style/test/test_transitions.html

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 <!DOCTYPE HTML>
 <html>
 <!--
 https://bugzilla.mozilla.org/show_bug.cgi?id=435441
 -->
 <head>
   <title>Test for Bug 435441</title>
   <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.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">
   #display p { margin-top: 0; margin-bottom: 0; }
   #display .before, #display .after {
     width: -moz-fit-content; border: 1px solid black;
   }
   #display .before::before, #display .after::after {
     display: block;
     width: 0;
     text-indent: 0;
   }
   #display .before.started::before, #display .after.started::after {
     width: 100px;
     text-indent: 100px;
     transition: 8s width ease-in-out, 8s text-indent ease-in-out;
   }
   #display .before::before {
     content: "Before";
   }
   #display .after::after {
     content: "After";
   }
   </style>
 </head>
 <body>
 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=435441">Mozilla Bug 435441</a>
 <div id="display">
 </div>
 <pre id="test">
 <script type="application/javascript">
 /** Test for Bug 435441 **/
 // Run tests simultaneously so we don't have to take up too much time.
 SimpleTest.waitForExplicitFinish();
 var gTestsRunning = 0;
 function TestStarted() { ++gTestsRunning; }
 function TestFinished() { if (--gTestsRunning == 0) SimpleTest.finish(); }
 // An array of arrays of functions to be called at the outer index number
 // of seconds after the present.
 var gFutureCalls = [];
 function add_future_call(index, func)
 {
     if (!(index in gFutureCalls)) {
         gFutureCalls[index] = [];
     }
     gFutureCalls[index].push(func);
     TestStarted();
 }
 var gStartTime1, gStartTime2;
 var gCurrentTime;
 var gSetupComplete = false;
 function process_future_calls(index)
 {
     var calls = gFutureCalls[index];
     if (!calls)
         return;
     gCurrentTime = Date.now();
     for (var i = 0; i < calls.length; ++i) {
         calls[i]();
         TestFinished();
     }
 }
 var timingFunctions = {
   // a map from the value of 'transition-timing-function' to an array of
   // the portions this function yields at 0 (always 0), 1/4, 1/2, and
   // 3/4 and all (always 1) of the way through the time of the
   // transition.  Each portion is represented as a value and an
   // acceptable error tolerance (based on a time error of 1%) for that
   // value.
   // ease
   "ease": bezier(0.25, 0.1, 0.25, 1),
   "cubic-bezier(0.25, 0.1, 0.25, 1.0)": bezier(0.25, 0.1, 0.25, 1),
   // linear and various synonyms for it
   "linear": function(x) { return x; },
   "cubic-bezier(0.0, 0.0, 1.0, 1.0)": function(x) { return x; },
   "cubic-bezier(0, 0, 1, 1)": function(x) { return x; },
   "cubic-bezier(0, 0, 0, 0.0)": function(x) { return x; },
   "cubic-bezier(1.0, 1, 0, 0)": function(x) { return x; },
   // ease-in
   "ease-in": bezier(0.42, 0, 1, 1),
   "cubic-bezier(0.42, 0, 1.0, 1.0)": bezier(0.42, 0, 1, 1),
   // ease-out
   "ease-out": bezier(0, 0, 0.58, 1),
   "cubic-bezier(0, 0, 0.58, 1.0)": bezier(0, 0, 0.58, 1),
   // ease-in-out
   "ease-in-out": bezier(0.42, 0, 0.58, 1),
   "cubic-bezier(0.42, 0, 0.58, 1.0)": bezier(0.42, 0, 0.58, 1),
   // other cubic-bezier values
   "cubic-bezier(0.4, 0.1, 0.7, 0.95)": bezier(0.4, 0.1, 0.7, 0.95),
   "cubic-bezier(1, 0, 0, 1)": bezier(1, 0, 0, 1),
   "cubic-bezier(0, 1, 1, 0)": bezier(0, 1, 1, 0),
 };
 var div = document.getElementById("display");
 // Set up all the elements on which we are going to start transitions.
 // We have two reference elements to check the expected timing range.
 // They both have 8s linear transitions from 0 to 1000px.
 function make_reference_p() {
     var p = document.createElement("p");
     p.appendChild(document.createTextNode("reference"));
     p.style.textIndent = "0px";
     p.style.transition = "8s text-indent linear";
     div.appendChild(p);
     return p;
 }
 var earlyref = make_reference_p();
 var earlyrefcs = getComputedStyle(earlyref, "");
 // Test all timing functions using a set of 8-second transitions, which
 // we check at times 0, 2s, 4s, 6s, and 8s.
 var tftests = [];
 for (var tf in timingFunctions) {
     var p = document.createElement("p");
     var t = document.createTextNode("transition-timing-function: " + tf);
     p.appendChild(t);
     p.style.textIndent = "0px";
     p.style.transition = "8s text-indent linear";
     p.style.transitionTimingFunction = tf;
     div.appendChild(p);
     is(getComputedStyle(p, "").textIndent, "0px",
        "should be zero before changing value");
     tftests.push([ p, tf ]);
 }
 // Check that the timing function continues even when we restyle in the
 // middle.
 var interrupt_tests = [];
 for (var restyleParent of [true, false]) {
     for (var itime = 2; itime < 8; itime += 2) {
         var p = document.createElement("p");
         var t = document.createTextNode("interrupt on " +
                                         (restyleParent ? "parent" : "node itself") +
                                         " at " + itime + "s");
         p.appendChild(t);
         p.style.textIndent = "0px";
         p.style.transition = "8s text-indent cubic-bezier(0, 1, 1, 0)";
         if (restyleParent) {
           var d = document.createElement("div");
           d.appendChild(p);
           div.appendChild(d);
         } else {
           div.appendChild(p);
         }
         is(getComputedStyle(p, "").textIndent, "0px",
            "should be zero before changing value");
         setTimeout("interrupt_tests[" + interrupt_tests.length + "]" +
                    "[0]" + (restyleParent ? ".parentNode" : "") +
                    ".style.color = 'blue';" +
                    "check_interrupt_tests()", itime*1000);
         interrupt_tests.push([ p, itime ]);
     }
 }
 // Test transition-delay values of -4s through 4s on a 4s transition
 // with 'ease-out' timing function.
 var delay_tests = {};
 for (var d = -4; d <= 4; ++d) {
     var p = document.createElement("p");
     var delay = d + "s";
     var t = document.createTextNode("transition-delay: " + delay);
     p.appendChild(t);
     p.style.marginLeft = "0px";
     p.style.transition = "4s margin-left ease-out " + delay;
     div.appendChild(p);
     is(getComputedStyle(p, "").marginLeft, "0px",
        "should be zero before changing value");
     delay_tests[d] = p;
 }
 // Test transition-delay values of -4s through 4s on a 4s transition
 // with duration of zero.
 var delay_zero_tests = {};
 for (var d = -4; d <= 4; ++d) {
     var p = document.createElement("p");
     var delay = d + "s";
     var t = document.createTextNode("transition-delay: " + delay);
     p.appendChild(t);
     p.style.marginLeft = "0px";
     p.style.transition = "0s margin-left linear " + delay;
     div.appendChild(p);
     is(getComputedStyle(p, "").marginLeft, "0px",
        "should be zero before changing value");
     delay_zero_tests[d] = p;
 }
 // Test that changing the value on an already-running transition to the
 // value it currently happens to have resets the transition.
 function make_reset_test(transition, description)
 {
     var p = document.createElement("p");
     var t = document.createTextNode(description);
     p.appendChild(t);
     p.style.marginLeft = "0px";
     p.style.transition = transition;
     div.appendChild(p);
     is(getComputedStyle(p, "").marginLeft, "0px",
        "should be zero before changing value");
     return p;
 }
 var reset_test = make_reset_test("4s margin-left ease-out 4s", "transition-delay reset to starting point");
 var reset_test_reference = make_reset_test("4s margin-left linear -3s", "reference for previous test (reset test)");
 // Test that transitions on descendants do not trigger when the
 // inherited value is itself transitioning.  In other words, when
 // ancestor and descendant both have a transition for the same property,
 // and the descendant inherits the property from the ancestor, the
 // descendant's transition is ignored (as part of the idea of not
 // starting transitions on changes that result from animation).
 // See http://lists.w3.org/Archives/Public/www-style/2009Jun/0121.html
 // and http://lists.w3.org/Archives/Public/www-style/2009Jul/0050.html
 var descendant_tests = [
     { parent_transition: "",
       child_transition: "4s text-indent" },
     { parent_transition: "4s text-indent",
       child_transition: "" },
     { parent_transition: "4s text-indent",
       child_transition: "16s text-indent" },
     { parent_transition: "4s text-indent",
       child_transition: "1s text-indent" },
     { parent_transition: "8s letter-spacing",
       child_transition: "4s text-indent" },
     { parent_transition: "4s text-indent",
       child_transition: "8s letter-spacing" },
     { parent_transition: "4s text-indent",
       child_transition: "8s all" },
     { parent_transition: "8s text-indent",
       child_transition: "4s all" },
     // examples with positive and negative delay
     { parent_transition: "4s text-indent 1s",
       child_transition: "8s text-indent" },
     { parent_transition: "4s text-indent -1s",
       child_transition: "8s text-indent" }
 ];
 for (var i in descendant_tests) {
     var test = descendant_tests[i];
     test.parentNode = document.createElement("div");
     test.childNode = document.createElement("p");
     test.parentNode.appendChild(test.childNode);
     test.childNode.appendChild(document.createTextNode(
         "parent with \"" + test.parent_transition + "\" and " +
         "child with \"" + test.child_transition + "\""));
     test.parentNode.style.transition = test.parent_transition;
     test.childNode.style.transition = test.child_transition;
     test.parentNode.style.textIndent = "50px"; // transition from 50 to 150
     test.parentNode.style.letterSpacing = "10px"; // transition from 10 to 5
     div.appendChild(test.parentNode);
     var parentCS = getComputedStyle(test.parentNode, "");
     var childCS = getComputedStyle(test.childNode, "");
     is(parentCS.textIndent, "50px",
        "parent text-indent should be 50px before changing");
     is(parentCS.letterSpacing, "10px",
        "parent letter-spacing should be 10px before changing");
     is(childCS.textIndent, "50px",
        "child text-indent should be 50px before changing");
     is(childCS.letterSpacing, "10px",
        "child letter-spacing should be 10px before changing");
     test.childCS = childCS;
 }
 // For all of these transitions, the transition for margin-left should
 // have a duration of 8s, and the default timing function (ease) and
 // delay (0).
 // This is because we're implementing the proposal in
 // http://lists.w3.org/Archives/Public/www-style/2009Aug/0109.html
 var number_tests = [
   { style: "transition: 4s margin, 8s margin-left" },
   { style: "transition: 4s margin-left, 8s margin" },
   { style: "transition-property: margin-left; " +
              "transition-duration: 8s, 2s" },
   { style: "transition-property: margin-left, margin-left; " +
              "transition-duration: 2s, 8s" },
   { style: "transition-property: margin-left, margin-left, margin-left; " +
              "transition-duration: 8s, 2s" },
   { style: "transition-property: margin-left; " +
              "transition-duration: 8s, 16s" },
   { style: "transition-property: margin-left, margin-left; " +
              "transition-duration: 16s, 8s" },
   { style: "transition-property: margin-left, margin-left, margin-left; " +
              "transition-duration: 8s, 16s" },
   { style: "transition-property: text-indent,word-spacing,margin-left; " +
              "transition-duration: 8s; " +
              "transition-delay: 0, 8s" },
   { style: "transition-property: text-indent,word-spacing,margin-left; " +
              "transition-duration: 8s, 16s; " +
              "transition-delay: 8s, 8s, 0, 8s, 8s, 8s" },
 ];
 for (var i in number_tests) {
     var test = number_tests[i];
     var p = document.createElement("p");
     p.setAttribute("style", test.style);
     var t = document.createTextNode(test.style);
     p.appendChild(t);
     p.style.marginLeft = "100px";
     div.appendChild(p);
     is(getComputedStyle(p, "").marginLeft, "100px",
        "should be 100px before changing value");
     test.node = p;
 }
 // Test transitions that are also from-display:none, to-display:none, and
 // display:none throughout.
 var from_none_test, to_none_test, always_none_test;
 function make_display_test(initially_none, text)
 {
     var p = document.createElement("p");
     p.appendChild(document.createTextNode(text));
     p.style.textIndent = "0px";
     p.style.transition = "8s text-indent ease-in-out";
     if (initially_none)
         p.style.display = "none";
     div.appendChild(p);
     return p;
 }
 from_none_test   = make_display_test(true,  "transition from display:none");
 to_none_test     = make_display_test(false, "transition to display:none");
 always_none_test = make_display_test(true,  "transition always display:none");
 var display_tests = [ from_none_test, to_none_test, always_none_test ];
 // Test transitions on pseudo-elements
 var before_test, after_test;
 function make_pseudo_elem_test(pseudo)
 {
     var p = document.createElement("p");
     p.className = pseudo;
     div.appendChild(p);
     return {"pseudo": pseudo, element: p};
 }
 before_test = make_pseudo_elem_test("before");
 after_test = make_pseudo_elem_test("after");
 var pseudo_element_tests = [ before_test, after_test ];
 // FIXME (Bug 522599): Test a transition that reverses partway through.
 var lateref = make_reference_p();
 var laterefcs = getComputedStyle(lateref, "");
 // flush style changes
 var x = getComputedStyle(div, "").color;
 // Start our timer as close as possible to when we start the first
 // transition.
 // Do not use setInterval because once it gets off in time, it stays off.
 for (var i = 1; i <= 8; ++i) {
     setTimeout(process_future_calls, i * 1000, i);
 }
 gStartTime1 = Date.now(); // set before any transitions have started
 // Start all the transitions.
 earlyref.style.textIndent = "1000px";
 for (var test in tftests) {
     var p = tftests[test][0];
     p.style.textIndent = "100px";
 }
 for (var test in interrupt_tests) {
     var p = interrupt_tests[test][0];
     p.style.textIndent = "100px";
 }
 for (var d in delay_tests) {
     var p = delay_tests[d];
     p.style.marginLeft = "100px";
 }
 for (var d in delay_zero_tests) {
     var p = delay_zero_tests[d];
     p.style.marginLeft = "100px";
 }
 reset_test.style.marginLeft = "100px";
 reset_test_reference.style.marginLeft = "100px";
 for (var i in descendant_tests) {
     var test = descendant_tests[i];
     test.parentNode.style.textIndent = "150px";
     test.parentNode.style.letterSpacing = "5px";
 }
 for (var i in number_tests) {
     var test = number_tests[i];
     test.node.style.marginLeft = "50px";
 }
 from_none_test.style.textIndent = "100px";
 from_none_test.style.display = "";
 to_none_test.style.textIndent = "100px";
 to_none_test.style.display = "none";
 always_none_test.style.textIndent = "100px";
 for (var i in pseudo_element_tests) {
     var test = pseudo_element_tests[i];
     test.element.classList.add("started");
 }
 lateref.style.textIndent = "1000px";
 // flush style changes
 x = getComputedStyle(div, "").color;
 gStartTime2 = Date.now(); // set after all transitions have started
 gCurrentTime = gStartTime2;
 /**
  * Assert that a transition whose timing function yields the bezier
  * |func|, running from |start_time| to |end_time| (both in seconds
  * relative to when the transitions were started) should have produced
  * computed value |cval| given that the transition was from
  * |start_value| to |end_value| (both numbers in CSS pixels).
  */
 function check_transition_value(func, start_time, end_time,
                                 start_value, end_value, cval, desc,
                                 xfail)
 {
     /**
      * Compute the value at a given time |elapsed|, by normalizing the
      * input to the timing function using start_time and end_time and
      * then turning the output into a value using start_value and
      * end_value.
      *
      * The |error_direction| argument should be either -1, 0, or 1,
      * suggesting adding on a little bit of error, to allow for the
      * cubic-bezier calculation being an approximation.  The amount of
      * error is proportional to the slope of the timing function, since
      * the error is added to the *input* of the timing function (after
      * normalization to 0-1 based on start_time and end_time).
      */
     function value_at(elapsed, error_direction) {
         var time_portion = (elapsed - start_time) / (end_time - start_time);
         if (time_portion < 0)
             time_portion = 0;
         else if (time_portion > 1)
             time_portion = 1;
         // Assume a small error since bezier computation can be off slightly.
         // (This test's computation is probably more accurate than Mozilla's.)
         var value_portion = func(time_portion + error_direction * 0.0005);
         if (value_portion < 0)
             value_portion = 0;
         else if (value_portion > 1)
             value_portion = 1;
         var value = (1 - value_portion) * start_value + value_portion * end_value;
         if (start_value > end_value)
             error_direction = -error_direction;
         // Computed values get rounded to 1/60th of a pixel.
         return value + error_direction * 0.02;
     }
     var time_range; // in seconds
     var uns_range; // |range| before being sorted (so errors give it
                    // in the original order
     if (!gSetupComplete) {
         // No timers involved
         time_range = [0, 0];
         if (start_time < 0) {
             uns_range = [ value_at(0, -1), value_at(0, 1) ];
         } else {
             var val = value_at(0, 0);
             uns_range = [val, val];
         }
     } else {
         time_range = [ px_to_num(earlyrefcs.textIndent) / 125,
                        px_to_num(laterefcs.textIndent) / 125 ];
         // seconds
         uns_range = [ value_at(time_range[0], -1),
                       value_at(time_range[1], 1) ];
     }
     var range = uns_range.concat(). /* concat to clone array */
                   sort(function compareNumbers(a,b) { return a - b; });
     var actual = px_to_num(cval);
     var fn = ok;
     if (xfail && xfail(range))
       fn = todo;
     fn(range[0] <= actual && actual <= range[1],
        desc + ": computed value " + cval + " should be between " +
        uns_range[0].toFixed(6) + "px and " + uns_range[1].toFixed(6) +
        "px at time between " + time_range[0] + "s and " + time_range[1] + "s.");
 }
 function check_ref_range()
 {
     // This is the only test where we compare the progress of the
     // transitions to an actual time; we need considerable tolerance at
     // the low end (we are using half a second).
     var expected_range = [ (gCurrentTime - gStartTime2 - 40) / 8,
                            (Date.now() - gStartTime1 + 20) / 8 ];
     if (expected_range[0] > 1000) {
         expected_range[0] = 1000;
     }
     if (expected_range[1] > 1000) {
         expected_range[1] = 1000;
     }
     function check(desc, value) {
         // The timing on the unit test VMs is not reliable, so make this
         // test report PASS when it succeeds and TODO when it fails.
         var passed = expected_range[0] <= value && value <= expected_range[1];
         (passed ? ok : todo)(passed,
            desc + ": computed value " + value + "px should be between " +
            expected_range[0].toFixed(6) + "px and " +
            expected_range[1].toFixed(6) + "px at time between " +
            expected_range[0]/125 + "s and " + expected_range[1]/125 + "s.");
     }
     check("early reference", px_to_num(earlyrefcs.textIndent));
     check("late reference", px_to_num(laterefcs.textIndent));
 }
 for (var i = 1; i <= 8; ++i) {
     add_future_call(i, check_ref_range);
 }
 function check_tf_test()
 {
     for (var test in tftests) {
         var p = tftests[test][0];
         var tf = tftests[test][1];
         check_transition_value(timingFunctions[tf], 0, 8, 0, 100,
                                getComputedStyle(p, "").textIndent,
                                "timing function test for timing function " + tf);
     }
     check_interrupt_tests();
 }
 check_tf_test();
 add_future_call(2, check_tf_test);
 add_future_call(4, check_tf_test);
 add_future_call(6, check_tf_test);
 add_future_call(8, check_tf_test);
 function check_interrupt_tests()
 {
     for (var test in interrupt_tests) {
         var p = interrupt_tests[test][0];
         var itime = interrupt_tests[test][1];
         check_transition_value(timingFunctions["cubic-bezier(0, 1, 1, 0)"],
 , 8, 0, 100,
                                getComputedStyle(p, "").textIndent,
                                "interrupt " +
                                (p.parentNode == div ? "" : "on parent ") +
                                "test for time " + itime + "s");
     }
 }
 // check_interrupt_tests is called from check_tf_test and from
 // where we reset the interrupts
 function check_delay_test(time)
 {
     var tf = timingFunctions["ease-out"];
     for (var d in delay_tests) {
         var p = delay_tests[d];
         check_transition_value(tf, Number(d), Number(d) + 4, 0, 100,
                                getComputedStyle(p, "").marginLeft,
                                "delay test for delay " + d + "s");
     }
 }
 check_delay_test(0);
 for (var i = 1; i <= 8; ++i) {
     add_future_call(i, check_delay_test);
 }
 function check_delay_zero_test(time)
 {
     for (var d in delay_zero_tests) {
         var p = delay_zero_tests[d];
         time_range = [ px_to_num(earlyrefcs.textIndent) / 125,
                        px_to_num(laterefcs.textIndent) / 125 ];
         var m = getComputedStyle(p, "").marginLeft;
         var desc = "delay_zero test for delay " + d + "s";
         if (time_range[0] < d && time_range[1] < d) {
             is(m, "0px", desc);
         } else if ((time_range[0] > d && time_range[1] > d) ||
                    (d == 0 && time == 0)) {
             is(m, "100px", desc);
         }
     }
 }
 check_delay_zero_test(0);
 for (var i = 1; i <= 8; ++i) {
     add_future_call(i, check_delay_zero_test);
 }
 function reset_reset_test(time)
 {
     reset_test.style.marginLeft = "0px";
 }
 function check_reset_test(time)
 {
     is(getComputedStyle(reset_test, "").marginLeft, "0px",
        "reset test value at time " + time + "s.");
 }
 check_reset_test(0);
 // reset the reset test right now so we don't have to worry about clock skew
 // To make sure that this is valid, check that a pretty-much-identical test is
 // already transitioning.
 is(getComputedStyle(reset_test_reference, "").marginLeft, "75px",
    "reset test reference value");
 reset_reset_test();
 check_reset_test(0);
 for (var i = 1; i <= 8; ++i) {
     (function(j) {
         add_future_call(j, function() { check_reset_test(j); });
     })(i);
 }
 check_descendant_tests();
 add_future_call(2, check_descendant_tests);
 add_future_call(6, check_descendant_tests);
 function check_descendant_tests() {
     // text-indent: transition from 50px to 150px
     // letter-spacing: transition from 10px to 5px
     var values = {};
     values["text-indent"] = [ 50, 150 ];
     values["letter-spacing"] = [ 10, 5 ];
     var tf = timingFunctions["ease"];
     for (var i in descendant_tests) {
         var test = descendant_tests[i];
         /* ti=text-indent, ls=letter-spacing */
         var child_ti_duration = 0;
         var child_ls_duration = 0;
         var child_ti_delay = 0;
         var child_ls_delay = 0;
         if (test.parent_transition != "") {
             var props = test.parent_transition.split(" ");
             var duration = parseInt(props[0]);
             var delay = (props.length > 2) ? parseInt(props[2]) : 0;
             var property = props[1];
             if (property == "text-indent") {
                 child_ti_duration = duration;
                 child_ti_delay = delay;
             } else if (property == "letter-spacing") {
                 child_ls_duration = duration;
                 child_ls_delay = delay;
             } else {
                 ok(false, "fix this test (unexpected transition-property " +
                           property + " on parent)");
             }
         }
         if (test.child_transition != "") {
             var props = test.child_transition.split(" ");
             var duration = parseInt(props[0]);
             var delay = (props.length > 2) ? parseInt(props[2]) : 0;
             var property = props[1];
             if (property != "text-indent" && property != "letter-spacing" &&
                 property != "all") {
                 ok(false, "fix this test (unexpected transition-property " +
                           property + " on child)");
             }
             if (property != "letter-spacing" && child_ti_duration == 0) {
                 child_ti_duration = duration;
                 child_ti_delay = delay;
             }
             if (property != "text-indent" && child_ls_duration == 0) {
                 child_ls_duration = duration;
                 child_ls_delay = delay;
             }
         }
         var time_portions = {
           "text-indent":
             { duration: child_ti_duration, delay: child_ti_delay },
           "letter-spacing":
             { duration: child_ls_duration, delay: child_ls_delay },
         };
         for (var prop in {"text-indent": true, "letter-spacing": true}) {
             var time_portion = time_portions[prop];
             if (time_portion.duration == 0) {
                 time_portion.duration = 0.01;
                 time_portion.delay = -1;
             }
             check_transition_value(tf, time_portion.delay,
                                    time_portion.delay + time_portion.duration,
                                    values[prop][0], values[prop][1],
                                    test.childCS.getPropertyValue(prop),
                                    "descendant test, property " + prop);
         }
     }
 }
 function check_number_tests()
 {
     var tf = timingFunctions["ease"];
     for (var d in number_tests) {
         var test = number_tests[d];
         var p = test.node;
         check_transition_value(tf, 0, 8, 100, 50,
                                getComputedStyle(p, "").marginLeft,
                                "number of transitions test for style " +
                                  test.style);
     }
 }
 check_number_tests(0);
 add_future_call(2, check_number_tests);
 add_future_call(4, check_number_tests);
 add_future_call(6, check_number_tests);
 add_future_call(8, check_number_tests);
 function check_display_tests(time)
 {
     var tf = timingFunctions["ease-in-out"];
     for (var i in display_tests) {
         var p = display_tests[i];
         check_transition_value(tf, 0, 8, 0, 100,
                                getComputedStyle(p, "").textIndent,
                                "display test for test with " +
                                  p.childNodes[0].data,
         // TODO: Making transitions work on 'display:none' elements is
         // still not implemented.
                                function(range) { return p != to_none_test &&
                                                  range[1] < 100 });
     }
 }
 check_display_tests(0);
 add_future_call(2, function() { check_display_tests(2); });
 add_future_call(4, function() { check_display_tests(4); });
 add_future_call(6, function() { check_display_tests(6); });
 add_future_call(8, function() { check_display_tests(8); });
 function check_pseudo_element_tests(time)
 {
     var tf = timingFunctions["ease-in-out"];
     for (var i in pseudo_element_tests) {
         var test = pseudo_element_tests[i];
         check_transition_value(tf, 0, 8, 0, 100,
                                getComputedStyle(test.element, "").width,
                                "::"+test.pseudo+" test");
         check_transition_value(tf, 0, 8, 0, 100,
                                getComputedStyle(test.element,
                                                 "::"+test.pseudo).textIndent,
                                "::"+test.pseudo+" indent test");
     }
 }
 check_pseudo_element_tests(0);
 add_future_call(2, function() { check_pseudo_element_tests(2); });
 add_future_call(4, function() { check_pseudo_element_tests(4); });
 add_future_call(6, function() { check_pseudo_element_tests(6); });
 add_future_call(8, function() { check_pseudo_element_tests(8); });
 gSetupComplete = true;
 </script>
 </pre>
 </body>
 </html>

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