1 files changed, 34 insertions, 0 deletions
diff --git a/testing/web-platform/tests/dom/events/non-cancelable-when-passive/resources/scrolling.js b/testing/web-platform/tests/dom/events/non-cancelable-when-passive/resources/scrolling.js
new file mode 100644
index 0000000000..88e10f5efd
--- /dev/null
+++ b/testing/web-platform/tests/dom/events/non-cancelable-when-passive/resources/scrolling.js
@@ -0,0 +1,34 @@
+function raf() {
+  return new Promise((resolve) => {
+    // rAF twice.
+    window.requestAnimationFrame(() => {
+      window.requestAnimationFrame(resolve);
+    });
+  });
+}
+
+async function runTest({target, eventName, passive, expectCancelable}) {
+  await raf();
+
+  let cancelable = null;
+  let arrived = false;
+  target.addEventListener(eventName, function (event) {
+    cancelable = event.cancelable;
+    arrived = true;
+  }, {passive:passive, once:true});
+
+  promise_test(async (t) => {
+    t.add_cleanup(() => {
+      document.querySelector('.remove-on-cleanup')?.remove();
+    });
+    const pos_x = Math.floor(window.innerWidth / 2);
+    const pos_y = Math.floor(window.innerHeight / 2);
+    const delta_x = 0;
+    const delta_y = 100;
+
+    await new test_driver.Actions()
+      .scroll(pos_x, pos_y, delta_x, delta_y).send();
+    await t.step_wait(() => arrived, `Didn't get event ${eventName} on ${target.localName}`);
+    assert_equals(cancelable, expectCancelable);
+  });
+}