Correct test failures

[freakboy3742]

The current development branch has some tests from the old 0.2 branch that are failing because the port to Toga required some changes in APIs. These tests need to be updated for the new 0.3 APIs.

[anand-371]

I am interested can I be assigned. This issue

[freakboy3742]

@Anand372 There's no formal assignment process; if you're interested in looking at this bug, just dig in, and submit a pull request!