subunit_trace.py 文件源码

def trace(stdin, stdout, print_failures=False, failonly=False,
          enable_diff=False, abbreviate=False, color=False, post_fails=False,
          no_summary=False):
    stream = subunit.ByteStreamToStreamResult(
        stdin, non_subunit_name='stdout')
    outcomes = testtools.StreamToDict(
        functools.partial(show_outcome, stdout,
                          print_failures=print_failures,
                          failonly=failonly,
                          enable_diff=enable_diff,
                          abbreviate=abbreviate,
                          enable_color=color))
    summary = testtools.StreamSummary()
    result = testtools.CopyStreamResult([outcomes, summary])
    result = testtools.StreamResultRouter(result)
    cat = subunit.test_results.CatFiles(stdout)
    result.add_rule(cat, 'test_id', test_id=None)
    start_time = datetime.datetime.utcnow()
    result.startTestRun()
    try:
        stream.run(result)
    finally:
        result.stopTestRun()
    stop_time = datetime.datetime.utcnow()
    elapsed_time = stop_time - start_time

    if count_tests('status', '.*') == 0:
        print("The test run didn't actually run any tests")
        return 1
    if post_fails:
        print_fails(stdout)
    if not no_summary:
        print_summary(stdout, elapsed_time)

    # NOTE(mtreinish): Ideally this should live in testtools streamSummary
    # this is just in place until the behavior lands there (if it ever does)
    if count_tests('status', '^success$') == 0:
        print("\nNo tests were successful during the run")
        return 1
    return 0 if summary.wasSuccessful() else 1