Add cities dataset to latest datasets download list

[cuducos]

Fix #78

[cuducos]

def TestLatest(TestCase):

    def test_cities_was_added(self):
        self.assertIn('2017-05-22-brazilian-cities.csv', Datasets().downloader.LATEST)

Or even:

    def test_latest(self):
        self.assertEqual(28, len(Datasets().downloader.LATEST))

But the real question is would it worth it?

[lipemorais]

I don't think that this kind of year worth.

What can be done to protect us from the future ourselves ?

May it should break if any of this files are removed from this list?

[lipemorais]

... this kind of test* ...

[cuducos]

May it should break if any of this files are removed from this list?

I don't think so, because we remove old versions when there are new ones available… although we would never see the len() of the list get smaller, because we would either replace a file (adding a newer version) or add a new dataset (which was not present in the list before).

[lipemorais]

Why is this constant important for toolbox?

The LATEST constant is not used anywhere in this file, if I remove it all project tests will pass smoothly. Is it OK?

[cuducos]

It's used here, in a function documented here.

Maybe the test you'd like to enhance is this one.

[lipemorais]

Is there any point against enhance this tests?

[cuducos]

Is there any point against enhance this tests?

Not at all ; )