[OE-core] [PATCH] scripts:/oe-selftest: Use timestamp instead of test names in coverage data file

[Randy Witt]

On 03/23/2016 05:32 PM, Humberto Ibarra wrote:
> This fixes the problem by changing the name to the coverage data file,
> using the timestamp as an identifier.

Fixes what problem?

>
> The name for the coverage data file is constructed based on the tests
> ran; this has created a couple of issues so far, affecting coverage report.
>
> If --run-tests-by option is given, the data file name won't have any
> identifier, causing following runs to overwrite themselves. On the
> other hand, if too many tests are given, the file name exceeds linux
> limits and fails to store the coverage data all together.
>
> [Yocto #9253]
>
> Signed-off-by: Humberto Ibarra <humberto.ibarra.lopez at intel.com>
> ---
>   scripts/oe-selftest | 13 +++++++++----
>   1 file changed, 9 insertions(+), 4 deletions(-)
>
> diff --git a/scripts/oe-selftest b/scripts/oe-selftest
> index d18348d..9b61bfa 100755
> --- a/scripts/oe-selftest
> +++ b/scripts/oe-selftest
> @@ -364,16 +364,21 @@ def list_tags():
>
>       print 'Tags:\t%s' % ', '.join(str(x) for x in tags)
>
> -def coverage_setup(run_tests, run_all_tests, coverage_source, coverage_include, coverage_omit):
> +def coverage_setup(coverage_source, coverage_include, coverage_omit):
>       """ Set up the coverage measurement for the testcases to be run """
> +    import datetime
> +    import subprocess
>       builddir = os.environ.get("BUILDDIR")
> +    pokydir = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
> +    curcommit= subprocess.check_output(["git", "--git-dir", os.path.join(pokydir, ".git"), "rev-parse", "HEAD"])
>       coveragerc = "%s/.coveragerc" % builddir
>       data_file = "%s/.coverage." % builddir
> -    data_file += ((run_tests and '.'.join(run_tests)) or
> -        (run_all_tests and "all_tests") or "")
> +    data_file += datetime.datetime.now().strftime('%Y%m%dT%H%M%S')
>       if os.path.isfile(data_file):
>           os.remove(data_file)
>       with open(coveragerc, 'w') as cps:
> +        cps.write("# Generated with command '%s'\n" % " ".join(sys.argv))
> +        cps.write("# HEAD commit %s\n" % curcommit.strip())
>           cps.write("[run]\n")
>           cps.write("data_file = %s\n" % data_file)
>           cps.write("branch = True\n")
> @@ -586,7 +591,7 @@ def buildResultClass(args):
>                   # value indicates where the coverage configuration file resides
>                   # More info on https://pypi.python.org/pypi/coverage
>                   if not os.environ.get('COVERAGE_PROCESS_START'):
> -                    os.environ['COVERAGE_PROCESS_START'] = coverage_setup(args.run_tests, args.run_all_tests, args.coverage_source, args.coverage_include, args.coverage_omit)
> +                    os.environ['COVERAGE_PROCESS_START'] = coverage_setup(args.coverage_source, args.coverage_include, args.coverage_omit)
>
>                   # Use default site.USER_SITE and write corresponding config file
>                   site.ENABLE_USER_SITE = True
>