Blitz - WPT: smil-values-empty-segments.html

wpt / svg / animations / scripted / smil-values-empty-segments.html

Data from commit:
96ff533 Remove hidden nodes from the acccessibility tree (#823) (2026-09-07)

Subtest	Status	Message
Trailing semicolon in values attribute is ignored for length animation	FAIL	promise_test: Unhandled rejection with value: object "TypeError: not a callable function"
Trailing semicolon in values attribute is ignored for class animation	FAIL	promise_test: Unhandled rejection with value: object "TypeError: not a callable function"
Double trailing semicolon in values preserves empty value between them	FAIL	promise_test: Unhandled rejection with value: object "TypeError: not a callable function"
Empty value in the middle of values attribute is preserved	FAIL	promise_test: Unhandled rejection with value: object "TypeError: not a callable function"

Enable JavaScript in test iframe

/svg/animations/scripted/smil-values-empty-segments.html

<!doctype html>
<title>Empty values in SMIL 'values' attribute should be preserved</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/rendering-utils.js"></script>
<link rel="help" href="https://svgwg.org/specs/animations/#ValuesAttribute">
<style>
  .red   { fill: red; }
  .green { fill: green; }
</style>
<svg id="svg" width="400" height="400">
  <!-- values: length with trailing semicolon (2 values: "0", "100") -->
  <rect id="rect-values-length" x="0" width="100" height="100" fill="green">
    <animate attributeName="x" values="0;100;" dur="4s" fill="freeze"/>
  </rect>

  <!-- values: class with trailing semicolon (2 values: "red", "green") -->
  <rect id="rect-values-class-trailing" width="100" height="100">
    <animate attributeName="class" values="red;green;" dur="4s"
             fill="freeze" calcMode="discrete"/>
  </rect>

  <!-- values: class with double trailing semicolon (3 values: "red", "green", "") -->
  <rect id="rect-values-class-double" width="100" height="100">
    <animate attributeName="class" values="red;green;;" dur="3s"
             fill="freeze" calcMode="discrete"/>
  </rect>

  <!-- values: class with empty value in the middle (3 values: "red", "", "green") -->
  <rect id="rect-values-class-middle" width="100" height="100">
    <animate attributeName="class" values="red;;green" dur="3s"
             fill="freeze" calcMode="discrete"/>
  </rect>
</svg>
<script>
  const svg = document.getElementById('svg');

  promise_setup(() => new Promise(
    resolve => window.addEventListener('load', resolve, {once: true})));

  promise_test(async t => {
    svg.pauseAnimations();
    svg.setCurrentTime(4);
    await waitForAtLeastOneFrame();
    const rect = document.getElementById('rect-values-length');
    assert_equals(rect.x.animVal.value, 100,
      'values="0;100;" with trailing semicolon should animate x to 100');
  }, 'Trailing semicolon in values attribute is ignored for length animation');

  promise_test(async t => {
    svg.pauseAnimations();
    svg.setCurrentTime(3);
    await waitForAtLeastOneFrame();
    const rect = document.getElementById('rect-values-class-trailing');
    const fill = getComputedStyle(rect).fill;
    assert_equals(fill, 'rgb(0, 128, 0)',
      'values="red;green;" should end on "green" (trailing semicolon ignored)');
  }, 'Trailing semicolon in values attribute is ignored for class animation');

  promise_test(async t => {
    svg.pauseAnimations();
    // Seek well past the 2/3 boundary of dur=3s. With 3 values in discrete mode,
    // index = floor(percent * 3). At t=2.5s, percent=5/6, index=floor(2.5)=2.
    // The 3rd value is "" (empty class = default black fill).
    svg.setCurrentTime(2.5);
    await waitForAtLeastOneFrame();
    const rect = document.getElementById('rect-values-class-double');
    const fill = getComputedStyle(rect).fill;
    assert_not_equals(fill, 'rgb(255, 0, 0)',
      'Should not be red — empty class value should clear the class');
    assert_not_equals(fill, 'rgb(0, 128, 0)',
      'Should not be green — empty class value should clear the class');
  }, 'Double trailing semicolon in values preserves empty value between them');

  promise_test(async t => {
    svg.pauseAnimations();
    // At t=1.5s (percent=0.5), index = floor(0.5 * 3) = 1.
    // The 2nd value is "" (empty class = default black fill).
    svg.setCurrentTime(1.5);
    await waitForAtLeastOneFrame();
    const rect = document.getElementById('rect-values-class-middle');
    const fill = getComputedStyle(rect).fill;
    assert_not_equals(fill, 'rgb(255, 0, 0)',
      'Should not be red — empty class value should clear the class');
    assert_not_equals(fill, 'rgb(0, 128, 0)',
      'Should not be green — empty class value should clear the class');
  }, 'Empty value in the middle of values attribute is preserved');
</script>