chromium/third_party/blink/web_tests/fast/forms/color/color-picker-escape-cancellation-format.html

<!DOCTYPE html>
<meta name=fuzzy content="maxDifference=0-3; totalPixels=0-1000">
<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='../../../fast/forms/resources/picker-common.js'></script>

<input type='color' id='color' value='#000000'>
<script>
'use strict';

promise_test(() => {
  let colorControl = document.getElementById('color');
  return openPicker(colorControl)
  .then(() => {
    internals.pagePopupWindow.focus();
    const popupDocument = internals.pagePopupWindow.document;
    const formatToggler = popupDocument.querySelector('format-toggler');
    formatToggler.click();  // first click changes format to HSL
    formatToggler.click();  // second click changes format to Hex

    eventSender.keyDown('Escape');
    assert_equals(internals.pagePopupWindow, null, 'Single escape should close popup if manual color entry format but not color value changed');
  });
}, "Color picker: Format changes with no color value change don't affect escape behavior");

</script>