ZODB Initialization
-------------------

cc.engine checks at start up to ensure that the ZODB is correctly initialized
with a single instance of the License Engine and License Catalog objects.

  >>> browser = Browser()
  >>> browser.raiseHttpErrors = True
  >>> browser.open('http://localhost:8080/license')
  

  >>> browser.open('http://localhost:8080/licenses')
  >>> browser.contents == ''
  True