chromium/src/third_party/blink/web_tests/external/wpt/webdriver/tests/switch_to_window/alerts.py

import pytest

from webdriver import error

from tests.support.asserts import assert_success


def switch_to_window(session, handle):
    return session.transport.send(
        "POST", "session/{session_id}/window".format(**vars(session)),
        {"handle": handle})


def test_retain_tab_modal_status(session):
    handle = session.window_handle

    new_handle = session.new_window()
    response = switch_to_window(session, new_handle)
    assert_success(response)

    session.execute_script("window.alert('Hello');")
    assert session.alert.text == "Hello"

    response = switch_to_window(session, handle)
    assert_success(response)

    with pytest.raises(error.NoSuchAlertException):
        session.alert.text == "Hello"

    response = switch_to_window(session, new_handle)
    assert_success(response)

    assert session.alert.text == "Hello"