ComponentLookupError on Dexterity types during testing

Question

I have a custom product with a number of Dexterity types, several of which are used by a setuphandler to create the site structure. This works without any issues outside of testing, but within tests it keeps failing:

Traceback (most recent call last):
  [snip]
  File "/opt/ctcc_plone/src/ctcc.model/ctcc/model/setuphandlers.py", line 52, in setupStructure
    random = createSiteFolder(portal, 'ctcc.model.servicefolder', 'Randomisation', 'random')
  File "/opt/ctcc_plone/src/ctcc.model/ctcc/model/setuphandlers.py", line 35, in createSiteFolder
    return createContentInContainer(context, type, title=title, id=id)
  File "/opt/ctcc_plone/eggs/plone.dexterity-1.1-py2.7.egg/plone/dexterity/utils.py", line 166, in createContentInContainer
    content = createContent(portal_type, **kw)
  File "/opt/ctcc_plone/eggs/plone.dexterity-1.1-py2.7.egg/plone/dexterity/utils.py", line 112, in createContent
    fti = getUtility(IDexterityFTI, name=portal_type)
  File "/opt/ctcc_plone/eggs/zope.component-3.9.5-py2.7.egg/zope/component/_api.py", line 169, in getUtility
    raise ComponentLookupError(interface, name)
ComponentLookupError: (<InterfaceClass plone.dexterity.interfaces.IDexterityFTI>, 'ctcc.model.servicefolder')

I'm ensuring the package's profile is imported during setup:

class CTCCModelSandboxLayer(PloneSandboxLayer):
    defaultBases = (PLONE_FIXTURE,)

    def setUpZope(self, app, configurationContext):
        import ctcc.model
        self.loadZCML(package=ctcc.model)

    def setUpPloneSite(self, portal):
        self.applyProfile(portal, 'ctcc.model:default')

While they're listed as install requirements in the package's setup, I've also tried an explicit applyProfile on plone.app.dexterity, as well as quickInstallProduct, but for some reason the Dexterity FTI's don't appear to be registered at the time they're called.

I'm using Plone 4.1, Dexterity 1.1, and plone.app.testing 4.2

Answer 1

As suggested by Mikko, I moved the setuphandler configuration from the product's zcml and into a GenericSetup import_steps.xml instead, allowing for an explicit dependency on typeinfo to be specified:

<?xml version="1.0"?>
<import-steps>
    <import-step
        id="ctcc-setup"
        title="Additional CTCC setup"
        handler="ctcc.model.setuphandlers.setupVarious"
        version="20120731"
    >
        <dependency step="typeinfo" />
    </import-step>
</import-steps>

Tests now run instead of failing during the applyProfile stage, and the tests of the site structure show it's being set up as expected.

Thanks again!