tests/sitecustomize.py

shelve: trust caller of shelvedfile.opener() to check that the file exists

The only place we call `shelvedfile.opener()` is when we're about to
apply a bundle. The file should always exist. If it doesn't, the
`.hg/` directory is corrupt and we don't provide any guarantees about
supporting corrupt repos (besides, telling the user that the shelve
doesn't exist when `hg shelve --list` lists it is not very helpful).

Differential Revision: https://phab.mercurial-scm.org/D9698

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