tests/sitecustomize.py

tag: do not pass binary nullid to scmutil.revsingle()

Future patches will remove the old-style parser that happen to accept a
binary nodeid. A binary nodeid shouldn't be passed to scmutil.revrange()
because it is ambiguous. For example, bin('20' * 19 + '30') is valid binary
nodeid, but it can also be parsed as a revset expression, '0'.

import os

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

        # uuid is better, but not available in Python 2.4.
        covpath = os.path.join(os.environ['COVERAGE_DIR'],
                               'cov.%s' % random.randrange(0, 1000000000000))
        cov = coverage.coverage(data_file=covpath, auto_data=True)
        cov._warn_no_data = False
        cov._warn_unimported_source = False
        cov.start()
    except ImportError:
        pass