Allowances/expectations on properties with setter

[dariocc]

class Foo(object):
    @property
    def bar(self):
        pass

    @bar.setter
    def bar(self, value):
        pass


def do_bar(foo):
    foo.bar = 3


def test_bar_property():
    foo = Foo()
    allow(foo).bar

    do_bar(foo)

Fails with AttributeError. Besides, it is not possible to validate what was the value passed to the setter (with_args fails cannot be used with properties).

[dariocc]

Please, consider my question in https://stackoverflow.com/questions/54327367/expectation-on-property-getter-setter-in-python-with-doubles were I posted a workaround. The workaround allows doing state testing on the property, but not creating expectation (which would also be useful):

Something like:

allow(foo).bar
expect(foo).bar = 3
expect(foo).bar = 5

do_bar()

Or even better, some syntax that allow to create expectations and allowances on the setter just as for any other method:

allow(foo).bar.setter
expect(foo).bar.setter.with_args(3)
expect(foo).bar.setter.with_args(5)

do_bar()