touch-rect-crash-on-unpromote-layer.html

<!DOCTYPE HTML>
<html>
<head>
<style>
#layer {
  position: relative;
  left: 10px;
  width: 400px;
  height: 300px;
  overflow: hidden;
}
.composited {
  will-change: transform;
}
</style>
</head>
<body>
<div id="layer" class="composited">A layer that may or may not be composited</div>
<p id="description"></p>
<div id="console"></div>

<script src="../../../resources/js-test.js"></script>
<script src="../../../resources/run-after-layout-and-paint.js"></script>
<script>
  window.jsTestIsAsync = true;
  description("Make sure we don't crash when a layer with a touch event handler becomes non-composited");

  var layer = document.getElementById('layer');
  layer.addEventListener('touchstart', function() {});


  var rects;
  if (window.internals) {
    // Ensure we've done a layout, updated compositing, and we have a hit rect on this composited layer.
    internals.forceCompositingUpdate(document);
    rects = internals.touchEventTargetLayerRects(document);
    shouldBe("rects.length", "1");
    shouldBe("rects[0].hitTestRect.x", "0");
    shouldBe("rects[0].hitTestRect.y", "0");
    shouldBe("rects[0].hitTestRect.width", "400");
    shouldBe("rects[0].hitTestRect.height", "300");
  }

  // Make the layer non-composited
  layer.className = '';

  // Verify we now have a hit rect on the document after layout and paint.
  runAfterLayoutAndPaint(function() {
    if (window.internals) {
      rects = internals.touchEventTargetLayerRects(document);
      shouldBe("rects.length", "1");
      shouldBe("rects[0].hitTestRect.x", "18");
      shouldBe("rects[0].hitTestRect.y", "8");
      shouldBe("rects[0].hitTestRect.width", "400");
      shouldBe("rects[0].hitTestRect.height", "300");
    }
    finishJSTest();
  });
</script>
</body>
</html>
chromium/third_party/blink/web_tests/fast/events/touch/touch-rect-crash-on-unpromote-layer.html
