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-rw-r--r--testing/web-platform/tests/svg/animations/switching-animated-target-to-unknown-element.html23
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diff --git a/testing/web-platform/tests/svg/animations/switching-animated-target-to-unknown-element.html b/testing/web-platform/tests/svg/animations/switching-animated-target-to-unknown-element.html
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index 0000000000..fef86a723e
--- /dev/null
+++ b/testing/web-platform/tests/svg/animations/switching-animated-target-to-unknown-element.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<title>Switching animated target to an unknown element</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<svg height="0">
+ <path id="path">
+ <animateMotion/>
+ </path>
+ <unknown id="unknown"></unknown>
+</svg>
+<script>
+ async_test(t => {
+ let path = document.getElementById("path");
+ let anim = path.firstElementChild;
+ t.step_timeout(() => {
+ path.appendChild(document.createElementNS('http://www.w3.org/2000/svg', 'animateMotion'));
+ anim.setAttributeNS('http://www.w3.org/1999/xlink', 'xlink:href', '#unknown');
+ requestAnimationFrame(t.step_func(() => {
+ requestAnimationFrame(t.step_func_done());
+ }));
+ });
+ });
+</script>