gecko/dom/smil/test/test_smilSetCurrentTime.xhtml

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
  <title>Test for setCurrentTime Behavior </title>
  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<p id="display"></p>
<div id="content" style="display: none">
<svg id="svg" xmlns="http://www.w3.org/2000/svg"
     onload="this.pauseAnimations()" />
</div>
<pre id="test">
<script class="testbody" type="text/javascript">
<![CDATA[
/** Test for basic setCurrentTime / getCurrentTime Behavior  **/

/* Global Variables & Constants */
const PRECISION_LEVEL = 0.0000001; // Allow small level of floating-point error
const gTimes = [0, 1.5, 0.2, 0.99, -400.5, 10000000, -1];
const gWaitTime = 20;
var gSvg = document.getElementById("svg");

SimpleTest.waitForExplicitFinish();

function main() {
  ok(gSvg.animationsPaused(), "should be paused by <svg> load handler");
  is(gSvg.getCurrentTime(), 0, "should be paused at 0 in <svg> load handler");

  // Test that seeking takes effect immediately
  for (var i = 0; i < gTimes.length; i++) {
    gSvg.setCurrentTime(gTimes[i]);
    // We adopt the SVGT1.2 behavior of clamping negative times to 0
    assertFloatsEqual(gSvg.getCurrentTime(), Math.max(gTimes[i], 0.0));
  }

  // Test that seeking isn't messed up by timeouts
  // (using tail recursion to set up the chain of timeout function calls)
  var func = function() {
    checkTimesAfterIndex(0);
  }
  setTimeout(func, gWaitTime);
}

/* This method seeks to the time at gTimes[index],
 * and then sets up a timeout to...
 *   - verify that the seek worked
 *   - make a recursive call for the next index.
 */
function checkTimesAfterIndex(index) {
  if (index == gTimes.length) {
    // base case -- we're done!
    SimpleTest.finish();
    return;
  }

  gSvg.setCurrentTime(gTimes[index]);
  var func = function() {
    assertFloatsEqual(gSvg.getCurrentTime(), Math.max(gTimes[index], 0.0));
    checkTimesAfterIndex(index + 1);
  }
  setTimeout(func, gWaitTime);
}

function assertFloatsEqual(aVal, aExpected) {
  ok(Math.abs(aVal - aExpected) <= PRECISION_LEVEL,
     "getCurrentTime returned " + aVal + " after seeking to " + aExpected)
}

window.addEventListener("load", main, false);
]]>
</script>
</pre>
</body>
</html>