I think something like the following, taken from http://bugs.python.org/issue19030#msg199920, shoud do the trick for something to test against:

    class Meta(type):
        def __getattr__(self, name):
            if name == 'ham':
                return 'spam'
            return super().__getattr__(name)

    class VA(metaclass=Meta):
        @types.DynamicClassAttribute
        def ham(self):
            return 'eggs'

which should result in:

    VA_instance = VA()
    VA_instance.ham  # should be 'eggs'
    VA.ham           # should be 'spam'

Combining all that with the DynamicClassAttribute should make a fitting test.  Thanks, Andreas, for working on that.