run-tests: auto-replace 'TXNID' output
Hooks related to the transaction are aware of the transaction id. By definition
this txn-id is unique and different for each transaction. As a result it can
never be predicted in test and always needs matching. As a result, touching any
like with this data is annoying. We solve the problem once and for all by
installing an automatic replacement. In test, this will now show as:
TXNID=TXN:$ID$
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