1 files changed, 31 insertions, 0 deletions
diff --git a/testing/web-platform/tests/event-timing/interactionid-orphan-pointerup.html b/testing/web-platform/tests/event-timing/interactionid-orphan-pointerup.html
new file mode 100644
index 0000000000..9c4a0ecf58
--- /dev/null
+++ b/testing/web-platform/tests/event-timing/interactionid-orphan-pointerup.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<html>
+<meta charset=utf-8 />
+<title>Event Timing: interactionId-orphan-pointerup.</title>
+<button id='testButtonId'>Orphan Pointerup</button>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script src=/resources/testdriver.js></script>
+<script src=/resources/testdriver-actions.js></script>
+<script src=/resources/testdriver-vendor.js></script>
+<script src=resources/event-timing-test-utils.js></script>
+
+<script>
+  let observedEntries = [];
+  const map = new Map();
+  const events = ['pointerup'];
+
+  promise_test(async t => {
+    assert_implements(window.PerformanceEventTiming, 'Event Timing is not supported.');
+
+    const callback = (entryList) => { observedEntries = observedEntries.concat(entryList.getEntries().filter(filterAndAddToMap(events, map))); };
+    const readyToResolve = () => { return observedEntries.length >= 1; };
+    const observerPromise = createPerformanceObserverPromise(['event'], callback, readyToResolve);
+
+    await interactAndObserve('orphan-pointerup', document.getElementById('testButtonId'), observerPromise);
+    assert_equals(map.get('pointerup'), 0, 'Should have a trivial interactionId for orphan pointerup event.');
+  }, "Event Timing: Orphan pointerup should not be measured as an interaction.");
+
+</script>
+
+</html>
+\ No newline at end of file