chromium/third_party/blink/web_tests/svg/dom/svganimatedangle-initial-values.html

<!DOCTYPE html>
<title>SVGAnimatedAngle, initial values</title>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script src="resources/initial-value-helper.js"></script>
<script>
assert_initial_values([
  { interface: 'SVGMarkerElement', attributes: [ 'orientAngle' ],
    orientAngle: { initial: '0', valid: '90deg' } },
], { mapProperty: { orientAngle: 'orient' },
     getValue: function(value) { return value.valueAsString } });
</script>