chromium/third_party/blink/web_tests/external/wpt/pointerevents/pointerevent_mouse_pointercapture_inactivate_pointer.html

<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<style>
    iframe {
      width: 300px;
      height: 300px;
      top: 100px;
      left: 100px;
      border: 0;
      position: absolute;
      background: green;
    }
    #outerFrame {
      width: 500px;
      height: 500px;
      background: blue;
    }
</style>
<body onload="run()">
    <div id='outerFrame'>
        <iframe id='iframe' src="resources/pointerevent_mouse_pointercapture_inactivate_pointer-iframe.html"></iframe>
    </div>
</body>

<script type="text/javascript">
    function run() {
    capture_count = 0;

    document.addEventListener("gotpointercapture", function(){
        capture_count ++;
    })

    iframe.contentDocument.addEventListener("gotpointercapture", function(){
        capture_count ++;
    })

    document.addEventListener("pointerdown", function(event){
        // Outer frame got pointer down, set capture to inner frame.
        iframe.contentDocument.getElementById("target").setPointerCapture(event.pointerId);
    });


    iframe.contentDocument.addEventListener("pointerdown", function(event){
        // Inner frame got pointer down, set capture to outer frame.
        outerFrame.setPointerCapture(event.pointerId);
    });


    promise_test(async(test) => {
      let eventWatcher = new EventWatcher(test, document, ["pointerup"]);
      let donePromise = eventWatcher.wait_for(["pointerup"], { record: 'all' });
      await injectEvent(50, 50);
      // wait for pointerUp before running the test
      await donePromise;
      assert_equals(capture_count, 0, "Inner frame can not capture when pointer is activate in outer frame")
    }, "setPointerCapture: pointer active in outer frame, set capture to inner frame");


    promise_test(async(test) => {
      let eventWatcher = new EventWatcher(test, iframe.contentDocument, ["pointerup"]);
      let donePromise = eventWatcher.wait_for(["pointerup"], { record: 'all' });
      await injectEvent(250, 250);
      // wait for pointerUp before running the test
      await donePromise;
      assert_equals(capture_count, 0, "Outer frame can not capture when pointer is activate in inner frame")
    }, "setPointerCapture: pointer active in inner frame, set capture to outer frame");

    function injectEvent(x, y) {
        return new test_driver.Actions()
            .pointerMove(x, y)
            .pointerDown()
            .pointerMove(x, y)
            .pointerUp()
            .send();
    }
}
</script>
</html>