chromium/src/third_party/blink/web_tests/external/wpt/uievents/interface/keyboard-accesskey-click-event.html

<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="/resources/testdriver-vendor.js"></script>

<p>Tests that a keyboard access key to press a button will fire only the click event</p>
<button id="button" accesskey="g">Click Me with Shift+Alt+g or on Mac with Control+Option+g</button>
<input id="inputbutton" type="button" accesskey="b" value="Click me with Shift+Alt+b or on Mac with Control+Option+b">

<script>
let button = document.getElementById("button");
let inputbutton = document.getElementById("inputbutton");
let radiobutton = document.getElementById("radiobutton");
let elementList = [button, inputbutton];
let eventLog = [];
const eventList = ["pointerdown", "pointerup", "mousedown", "mouseup", "click"];
elementList.forEach((el)=>{eventList.forEach((ev)=>el.addEventListener(ev, (e)=>{
  eventLog.push(`${ev}_${el.id}`);
  if(ev === "click" && currentTest){
    currentTest.step(()=>{
      if(e instanceof PointerEvent){
        // We want the test to run on all browsers even if click is not a PointerEvent.
        assert_equals(e.pointerId, 0, "Click's pointerId has default value");
        assert_equals(e.pointerType, "", "Click's pointerType has default value");
      }
    });
  }
}));});
let currentTest;
let testElements = [button, inputbutton];
let accesskeyMap = new Map([[button, "g"], [inputbutton, "b"]]);
testElements.forEach((el)=>promise_test((test)=> new Promise(async (resolve,reject)=>{
  currentTest = test;
  eventLog = [];
  var eventWatcher = new EventWatcher(test, el, ['click']);
  let waitForClick = eventWatcher.wait_for('click');
  let actions = new test_driver.Actions();
  actions = pressAccessKey(actions, accesskeyMap.get(el));
  await actions.send();
  await waitForClick;

  assert_array_equals(eventLog, [`click_${el.id}`], "The Keyboard generated click only sends the click event.");
  resolve();
}), `Test that the Keyboard generated click does not fire pointer or mouse events for ${el.id}`));

function pressAccessKey(actions, accessKey){
  // TODO(liviutinta): figure out which values for controlKey/optionKey to use for Mac
  let controlKey = '\uE009'; // left Control key
  let altKey = '\uE00A'; // left Alt key
  let optionKey = altKey;  // left Option key
  let shiftKey = '\uE008'; // left Shift key
  // There are differences in using accesskey across browsers and OS's.
  // See: // https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/accesskey
  let isMacOSX = navigator.userAgent.indexOf("Mac") != -1;
  let isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') > -1;
  // Default OS access keys.
  let osAccessKey = [shiftKey, altKey];
  // Set the OS keys that need to be pressed for a keyboard accessibility click.
  if(isMacOSX){
    if(isFirefox){
      // On Firefox on Mac use Shift + Option + accesskey.
      osAccessKey = [shiftKey, optionKey];
    }else{
      // On Mac use Control + Option + accesskey (for button is g).
      osAccessKey = [controlKey, optionKey];
    }
  }
  // Press keys.
  for(key of osAccessKey)
    actions = actions.keyDown(key);
  actions = actions
            .keyDown(accessKey)
            .addTick()
            .keyUp(accessKey);
  osAccessKey.reverse();
  for(key of osAccessKey)
    actions = actions.keyUp(key);
  return actions;
}
</script>