Log in as the portal owner.
---------------------------
    >>> from plone.app.testing import TEST_USER_NAME, TEST_USER_PASSWORD
    >>> browser.login(TEST_USER_NAME, TEST_USER_PASSWORD)

Now create Cart Folder
-----------------------
	>>> browser.open(portal_url)
    >>> browser.getLink(id='cartfolder').url.endswith("createObject?type_name=CartFolder")
    True
    >>> browser.open(portal_url)
    >>> browser.getLink(id='cartfolder').click()
    >>> browser.getControl(name="title").value = 'CartFolder01'
    >>> browser.getControl("Save").click()
    >>> cartfolder01 = portal['cartfolder01']
    >>> cartfolder01
    <CartFolder at /plone/cartfolder01>
    >>> cartfolder01.getField('language').get(cartfolder01)
    ''

Add another CartFolder
----
    >>> browser.open(portal_url)
    >>> browser.getLink(id='cartfolder').click()
    >>> browser.getControl(name="title").value = 'CartFolder02'
    >>> browser.getControl("Save").click()
    >>> cartfolder02 = portal['cartfolder02']
    >>> cartfolder02.getField('language').get(cartfolder02)
    ''
    >>> portal['cartfolder01']
    Traceback (most recent call last):
    ...
    KeyError: 'cartfolder01'
