Allow Discussion
================

Test Setup
----------

We create a dexterity content type that provides the allow discussion behavior::

    >>> portal = layer['portal']
    >>> from plone.dexterity.fti import DexterityFTI
    >>> fti = DexterityFTI('discussiondocument')
    >>> fti.behaviors = ('plone.app.dexterity.behaviors.discussion.IAllowDiscussion',)
    >>> portal.portal_types._setObject('discussiondocument', fti)
    'discussiondocument'

Set up a test browser::

    >>> from plone.app.testing import TEST_USER_ID, TEST_USER_NAME, TEST_USER_PASSWORD, setRoles
    >>> setRoles(portal, TEST_USER_ID, ['Manager'])
    >>> import transaction; transaction.commit()
    >>> from plone.testing.z2 import Browser
    >>> browser = Browser(layer['app'])
    >>> browser.addHeader('Authorization', 'Basic %s:%s' % (TEST_USER_NAME, TEST_USER_PASSWORD,))

We have to make sure the request provides IDiscussonLayer because the enabled
method on the conversation calls conversation_view (which is only registered
for IDiscussionLayer).

    >>> from plone.app.discussion.interfaces import IDiscussionLayer
    >>> from zope.interface import alsoProvides
    >>> alsoProvides(portal.REQUEST, IDiscussionLayer)

Add a document::

    >>> browser.open('http://nohost/plone/++add++discussiondocument')


Default Allow Discussion Options
--------------------------------

There are three options for the allow discussion select field::

    >>> allowDiscussion = browser.getControl('Allow discussion')
    >>> allowDiscussion.options
    ['--NOVALUE--', 'True', 'False']

By default, no value is set for allow discussion::

    >>> browser.getControl('Allow discussion').value
    ['--NOVALUE--']
    >>> browser.getControl('Save').click()
    >>> browser.url
    'http://nohost/plone/discussiondocument/view'

This means discussion is not enabled:

    >>> from plone.app.discussion.interfaces import IConversation
    >>> conv = IConversation(portal.discussiondocument)
    >>> conv.enabled()
    False

We have to globally enable discussion in order to be able to add comments::

    >>> from plone.registry.interfaces import IRegistry
    >>> from zope.component import queryUtility
    >>> from plone.app.discussion.interfaces import IDiscussionSettings
    >>> registry = queryUtility(IRegistry)
    >>> settings = registry.forInterface(IDiscussionSettings)
    >>> settings.globally_enabled = True

Discussion is still disabled for our content object though::

    >>> from plone.app.discussion.interfaces import IConversation
    >>> conv = IConversation(portal.discussiondocument)
    >>> conv.enabled()
    False

This is because discussion is disabled by default for the document content
type::

    >>> fti.allow_discussion
    False

If we allow discussion for the 'Document' content type, the conversation
for our content object is enabled because it just uses the default setting
(because allow_discussion is set to None)::

    >>> fti.allow_discussion = True
    >>> from plone.app.discussion.interfaces import IConversation
    >>> conv = IConversation(portal.discussiondocument)
    >>> conv.enabled()
    True

We can now override the default value (True) by explicitly setting allow discussion to False::

    >>> browser.open('http://nohost/plone/discussiondocument/edit')
    >>> allowDiscussion = browser.getControl('Allow discussion')
    >>> allowDiscussion.value = ['False']
    >>> browser.getControl('Save').click()

Discussion on our content object is now not enabled::

    >>> from plone.app.discussion.interfaces import IConversation
    >>> conv = IConversation(portal.discussiondocument)
    >>> conv.enabled()
    False