1 files changed, 47 insertions, 0 deletions
diff --git a/testing/web-platform/tests/svg/animations/slider-switch.html b/testing/web-platform/tests/svg/animations/slider-switch.html
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index 0000000000..59aa8f29ca
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+++ b/testing/web-platform/tests/svg/animations/slider-switch.html
@@ -0,0 +1,47 @@
+<!doctype html>
+<title>Check correct event bases for onclick</title>
+<meta charset="utf-8">
+<link rel="help" href="https://svgwg.org/svg2-draft/single-page.html#interact-EventAttributes">
+<link rel="author" title="Edvard Thörnros" href="mailto:edvardt@opera.com">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<svg width="200" height="100">
+  <rect x="0" y="0" width="100" height="100" id="a" fill="#0AA">
+    <set begin="a.click" attributeName="display" to="none" fill="freeze"/>
+    <set begin="b.click" attributeName="display" to="block" fill="freeze"/>
+  </rect>
+  <rect x="100" y="0" width="100" height="100" id="b" display="none" fill="#A0A">
+    <set begin="a.click" attributeName="display" to="block" fill="freeze"/>
+    <set begin="b.click" attributeName="display" to="none" fill="freeze"/>
+  </rect>
+</svg>
+<script>
+  let clicks_remaining = 2;
+  let a = document.querySelector("#a");
+  let b = document.querySelector("#b");
+  function perform_clicks(t) {
+    t.step_timeout(function() {
+      a.dispatchEvent(new Event("click"));
+      t.step_timeout(function() {
+        b.dispatchEvent(new Event("click"));
+      }, 20);
+    }, 20);
+  }
+  async_test(t => {
+    let observer = document.querySelector("#b > set + set");
+    observer.addEventListener('beginEvent', t.step_func(function() {
+      if (clicks_remaining == 0) {
+        assert_equals(window.getComputedStyle(a).display, "block");
+        assert_equals(window.getComputedStyle(b).display, "none");
+        t.done();
+        return;
+      }
+      perform_clicks(t);
+      clicks_remaining--;
+    }));
+    window.onload = t.step_func(() => {
+      perform_clicks(t);
+      clicks_remaining--;
+    });
+  });
+</script>