tests/silenttestrunner.py

statichttprepo: move HTTPRangeHandler from byterange and delete the latter

It turns out we've been toting around 472 lines of Python just for
this 20-ish line class that teaches urllib how to handle '206 Partial
Content'. byterange.py showed up in my \sstr\( Python 3 dragnet, and
found itself having overstayed its welcome in our codebase.

# no-check-commit because we're moving code that has to have foo_bar naming.

Differential Revision: https://phab.mercurial-scm.org/D2443

from __future__ import absolute_import, print_function
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