view tests/sitecustomize.py @ 42215:be0733552984

rust-dagops: roots

Unsuprisingly, the algorithm is much easier than for heads, provided
we work on a set in the first place.

To improve the signature, a trait for set-likes object would be useful,
but that's not an immediate concern.

Differential Revision: https://phab.mercurial-scm.org/D6230

from __future__ import absolute_import
import os

if os.environ.get('COVERAGE_PROCESS_START'):
    try:
        import coverage
        import uuid

        covpath = os.path.join(os.environ['COVERAGE_DIR'],
                               'cov.%s' % uuid.uuid1())
        cov = coverage.coverage(data_file=covpath, auto_data=True)
        cov._warn_no_data = False
        cov._warn_unimported_source = False
        cov.start()
    except ImportError:
        pass