textarea-resize-below-custom-resizer-size.html

<!DOCTYPE html>
<style>
textarea {
  border: none;
  width: 200px;
  height: 200px;
  resize: both;
  overflow: scroll;
}
textarea::-webkit-scrollbar {
  width: 125px;
  height: 175px;
  background: red;
}
textarea::-webkit-scrollbar-corner {
  background: green;
}
</style>
<body>
<script src="../../../resources/testharness.js"></script>
<script src="../../../resources/testharnessreport.js"></script>

<textarea id="textInputID">
Some text
</textarea>

<script>
function drag(startX, startY, destX, destY, callback) {
  chrome.gpuBenchmarking.pointerActionSequence([{source: 'mouse', actions:[
    {name: 'pointerDown', x: startX, y: startY},
    {name: 'pointerMove', x: destX, y: destY},
    {name: 'pointerUp'}]}],
    callback);
}

var t = async_test('Test for resizing the TEXTAREA below the resizer size.');
t.step(() => {
  assert_own_property(window, 'chrome');
  assert_own_property(chrome, 'gpuBenchmarking');

  var textArea = document.getElementById('textInputID');
  var startX = (textArea.getBoundingClientRect().right - 1);
  var startY = (textArea.getBoundingClientRect().bottom - 1);
  drag(startX, startY, 0, 0, t.step_func_done(() => {
    // The textarea should be shrunk so that there is no room for visible
    // content beyond the resizer itself.
    assert_equals(textArea.clientWidth, 0);
    assert_equals(textArea.clientHeight, 0);
    assert_equals(textArea.getBoundingClientRect().width, 125);
    assert_equals(textArea.getBoundingClientRect().height, 175);
  }));
});
</script>
</body>
chromium/third_party/blink/web_tests/fast/forms/textarea/textarea-resize-below-custom-resizer-size.html
