
:doctest:
:functional-zcml-layer: ftesting.zcml

Only our local ftesting.zcml is considered during test runs:

    >>> from zope.component import getUtility
    >>> from z3c.testsetup.tests.layered_cave.foo import IFoo
    >>> getUtility(IFoo, name='foo utility')().do_foo()
    Foo!

    >>> from z3c.testsetup.tests.layered_cave.bar import IBar
    >>> getUtility(IBar, name='bar utility')
    Traceback (most recent call last):
    ...
    ComponentLookupError: (<InterfaceClass ...bar.IBar>, 'bar utility')
