def test_mouse_out_top_left(browser, app_url):
    """Should be able to perform a mouse out on an element,
    even if the element is at the top left corner of the screen.
    """
    browser.visit(app_url + "/mouse")

    element = browser.find_by_css(".add-element-mouseover")
    element.mouse_over()
    element.mouse_out()

    assert browser.is_element_not_present_by_id("what-is-your-name", wait_time=10)
Should be able to perform a mouse out on an element,
    even if the element is at the top left corner of the screen.
    
tests/tests_webdriver/test_mouse_interaction.py