I have an emergent bug that I've got to track down tomorrow. I know a previous hg revision which was good so I'm thinking about using hg bisect.

However, I'm on Windows and don't want to get into DOS scripting.

Ideally, I'd be able to write a Python unit test and have hg bisect use that. This is my first attempt.

bisector.py

#!/usr/bin/env python

import sys
import unittest

class TestCase(unittest.TestCase):

    def test(self):
        #raise Exception('Exception for testing.')
        #self.fail("Failure for testing.")
        pass


def main():
    suite = unittest.defaultTestLoader.loadTestsFromTestCase(TestCase)
    result = unittest.TestResult()
    suite.run(result)

    if result.errors:
        # Skip the revision
        return 125

    if result.wasSuccessful():
        return 0
    else:
        return 1


if '__main__' == __name__:
    sys.exit(main())

Perhaps I could then run:

hg bisect --reset
hg bisect --bad
hg bisect --good -r 1
hg bisect --command=bisector.py

Is there a better way of doing it? Thanks for any advice.