make sessionSetUp reusable, this should go to zope.session.testing once

update TODO.txt

TODO.txt

@@ -3,3 +3,7 @@ TODO
 ====
 
 - implement nickName, email and phone?
+
+- check imports
+
+- check dependency in buildout setup

src/z3c/authenticator/credential.py

@@ -175,7 +175,9 @@ class SessionCredentialsPlugin(persistent.Persistent, contained.Contained):
     To illustrate how a session plugin works, we'll first setup some session
     machinery:
 
+      >>> from zope.app.testing import placelesssetup
       >>> from z3c.authenticator.testing import sessionSetUp
+      >>> placelesssetup.setUp()
       >>> sessionSetUp()
 
     This lets us retrieve the same session info from any test request, which

src/z3c/authenticator/testing.py

@@ -20,7 +20,6 @@
 import zope.interface
 from zope.publisher.interfaces import IRequest
 from zope.app.testing import setup
-from zope.app.testing import placelesssetup
 
 from zope.session.interfaces import IClientId
 from zope.session.interfaces import IClientIdManager
@@ -52,7 +51,6 @@ def __new__(cls, request):
 
 
 def sessionSetUp(session_data_container_class=RAMSessionDataContainer):
-    placelesssetup.setUp()
     zope.component.provideAdapter(TestClientId, (IRequest,), IClientId)
     zope.component.provideAdapter(Session, (IRequest,), ISession)
     zope.component.provideUtility(CookieClientIdManager(), IClientIdManager)