tests/silenttestrunner.py

tests: fix sortdict doctest with Python 3.12

The output of OrderedDict changed to use plain dict syntax:

  $ python3.11 -c "import collections;print(collections.OrderedDict([('a', 0), ('b', 1)]))"
  OrderedDict([('a', 0), ('b', 1)])

  $ python3.12 -c "import collections;print(collections.OrderedDict([('a', 0), ('b', 1)]))"
  OrderedDict({'a': 0, 'b': 1})

import os
import sys
import unittest


def main(modulename):
    '''run the tests found in module, printing nothing when all tests pass'''
    module = sys.modules[modulename]
    suite = unittest.defaultTestLoader.loadTestsFromModule(module)
    results = unittest.TestResult()
    suite.run(results)
    if results.errors or results.failures:
        for tc, exc in results.errors:
            print('ERROR:', tc)
            print()
            sys.stdout.write(exc)
        for tc, exc in results.failures:
            print('FAIL:', tc)
            print()
            sys.stdout.write(exc)
        sys.exit(1)


if os.environ.get('SILENT_BE_NOISY'):
    main = unittest.main