animate-path-from-by-animation-mismatch.tentative.html

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This WPT test may be referenced by the following Test IDs:
- /svg/animations/animate-path-from-by-animation-mismatch.tentative.html - WPT Dashboard Interop Dashboard

<!doctype html>

<title>SVG path 'd' attribute from-by animation with mismatched commands</title>

<link rel="help" href="https://www.w3.org/TR/SVG2/paths.html#TheDProperty"/>

<link rel="help" href="https://github.com/w3c/svgwg/issues/1056"/>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="/resources/SVGAnimationTestCase-testharness.js"></script>

<script src="support/animated-path-helpers.js"></script>

<svg>

  <path id="path" fill="green" d="M10,10 L50,10">

    <animate id="animation" attributeName="d"

             from="M10,10 L50,10 L50,50 Z"

             by="M20,20 C40,20 40,40 60,40 Z"

             begin="0s" dur="2s" fill="freeze"/>

  </path>

</svg>

<script>

const rootSVGElement = document.querySelector("svg");

// Setup animation test

function sample1() {

  // Invalid animation: mismatched commands in from-by, fallback to base value

  assert_animated_path_equals(path, "M10,10 L50,10");

smil_async_test((t) => {

  const expectedValues = [

    // [animationId, time, sampleCallback]

    ["animation", 0.0,   sample1],

    ["animation", 1.0,   sample1],

    ["animation", 2.0,   sample1],

    ["animation", 2.001, sample1]

];

  runAnimationTest(t, expectedValues);

});

</script>