Moking property with execption

I would like to mock and object attribute and when the attribute is called I would like to raise an exception. I would like to do something like this:

def test(self):
    element = mock()
    when(element).text.thenRaise(ValueError('foo'))

But because when can only mock method, the above does not quite work. I also tried several other ways, but could not get it working. Is there a way to make the mock attribute to raise and exception?

[kaste]

I will very likely support

prop = mock()
when(prop).__get__(...).thenRaise(ValueError)
m = mock({'tx': prop})

in the next version.

[aaltat]

I agree that having cleaner support would be nicer, although if this would work

prop = mock()
when(prop).__get__(...).thenRaise(ValueError)
m = mock({'tx': prop})

in Python unit test framework, it would be pretty clean.

But lambda can raise an exception with a trick:

    def test_d(self):
        m = mock()
        m.__class__.tx = property(lambda _: exec('raise(ValueError())'))
        with self.assertRaises(ValueError):
            m.tx

Is based on: https://stackoverflow.com/a/9547687