scroller-covered-by-empty-svg.html | Explore in Territory

<!doctype html>
<link rel="help" href="https://crbug.com/41490395">
<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>
  #scroller {
    overflow: auto;
    width: 600px;
    height: 300px;
    border: 2px solid blue;
    will-change: scroll-position;
  }

  #svg {
    position: relative;
    top: -300px;
    width: 300px;
    height: 300px;
  }

  .spacer {
    height: 200vh;
  }
</style>

<div id="scroller">
  <div class="spacer"></div>
</div>
<svg id="svg"></svg>
<div class="spacer"></div>

<script>
  promise_test(async (t) => {
    let scrolled = new Promise((resolve) => {
      let scrollers = [window, document.getElementById("scroller")];
      let onscroll = (evt) => {
        for (const scroller of scrollers) {
          scroller.removeEventListener("scroll", onscroll);
        }
        resolve(evt.target.id || "root");
      }
      for (const scroller of scrollers) {
        scroller.addEventListener("scroll", onscroll);
      }
    });
    // Scroll in SVG. Should scroll the window.
    new test_driver.Actions().scroll(100, 100, 0, 50, { duration: 50 }).send();
    assert_equals(await scrolled, "root", "Scroll in SVG should scroll the window");
  }, "Wheel-scroll in empty SVG covering scroller should not scroll the scroller");
</script>
chromium/third_party/blink/web_tests/external/wpt/css/css-overflow/scroller-covered-by-empty-svg.html
