Bug 1776190 - [marionette] Allow a modifier key to be reset when sending it...

    const data = lazy.keyData.getData(keyValue);

    const key = { ...data, ...modifiers };

    if (data.modifier) {

      modifiers[data.modifier] = true;

      // Negating the state of the modifier here is not spec compliant but

      // makes us compatible to Chrome's behavior for now. That's fine unless

      // we know the correct behavior.

      //

      // @see: https://github.com/w3c/webdriver/issues/1734

      modifiers[data.modifier] = !modifiers[data.modifier];

    }

    event.sendSingleKey(key, win);

  }

from tests.support.asserts import assert_success

from tests.support.keys import Keys

def element_send_keys(session, element, text):

    return session.transport.send(

        "POST",

        "/session/{session_id}/element/{element_id}/value".format(

            session_id=session.session_id, element_id=element.id

        ),

        {"text": text},

    )

def test_modifier_key_toggles(session, inline, modifier_key):

    session.url = inline("<input type=text value=foo>")

    element = session.find.css("input", all=False)

    response = element_send_keys(

        session, element, f"{modifier_key}a{modifier_key}{Keys.DELETE}cheese"

    )

    assert_success(response)

    assert element.property("value") == "cheese"