Previously the test-bots script filtered out base-class tests from
BotTestCase. With this change, BotTestCase continues to inherit from
unittest.TestCase, but the default test_* methods previously in this
class are now in a new DefaultTests class, which does not. Instead, each
bot needs to inherit from BotTestCase and DefaultTests *explicitly*.
This avoids the need to filter out the base-class tests, which
simplifies the test-bots script, and may ease any migration to eg.
pytest.
The DefaultTests class does require some non-implemented methods which
BotTestCase provides.
The monkeytestit tests fail on Python3.4 because
one of their dependencies only works on Python3.5.
This is a hotfix to make builds pass again. We'll
want to find a proper way of Python version conditional
bot test execution.
We need to import the bot class inside the tests, so
we are able to temporarily resolve problems with the
bot class by simply skipping the test. It also makes
the code look nicer.
