https://github.com/web-platform-tests/wpt
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Tip revision: e7d3527321e5e94401ce1e6d1714bee8205b9e4a authored by Hiroshige Hayashizaki on 22 December 2018, 07:14:30 UTC
[wpt/upgrade-insecure-requests] Fix generateRedirect()
Tip revision: e7d3527
supported-in-source-type.html
<!DOCTYPE html>
<title>Animated PNG MIME type (image/apng) is recognized by &lt;source type></title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
function resolveUrl(relativeUrl) {
  var a = document.createElement('a');
  a.href = relativeUrl;
  return a.href;
}

async_test(t => {
  window.onload = t.step_func_done(() => {
    let image = document.querySelector('img');
    let apngSrc = document.querySelector('source');
    assert_equals(image.currentSrc, resolveUrl(apngSrc.srcset));
  });
});
</script>
<picture>
  <source srcset="/images/anim-gr.png" type="image/apng">
  <img src="/images/anim-gr.gif" style="visibility: hidden">
</picture>
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