run-tests: pass an optional TestResult into _executetests() If the result is passed, we execute tests in the unittest way. A subsequent patch will actually do this.

run-tests: pass Test instances into TestRunner._executetests() Test instances (not paths) are passed into _executetests(). This means the logic for instantiating Test instances has been moved outside of _executetests(). This was done because an upcoming patch will reuse the logic in _executetests(). As part of this change, test counts are no longer managed by _executetests().

run-tests: define cleanup() on unittest class We need a cleanup() on our unittest TestCase class to conform with the execution API. This will eventually be replaced by tearDown().

run-tests: rename Test._test to Test.name A lot of the attributes in Test could probably be renamed. This one is needed for an upcoming patch.

run-tests: teach Test instances whether they are in unittest mode Tests executing in unittest mode behave a little differently. For example, they report their results to a TestResult rather than just printing. This patch paves the way for better integration of Test into the unittest framework.

run-tests: teach unittest about warned results

run-tests: document how success code is handled

run-tests: teach unittest about ignored tests

run-tests: teach unittest about skipped tests

run-tests: define custom result and runner classes for unittest We need to teach unittest about some custom result types. This will require some custom classes. This patch creates a skeleton for them.