test/bdd/steps/utils.py

   1 """
   2 Various smaller helps for step execution.
   3 """
   4 import logging
   5 import subprocess
   6
   7 LOG = logging.getLogger(__name__)
   8
   9 def run_script(cmd, **kwargs):
  10     """ Run the given command, check that it is successful and output
  11         when necessary.
  12     """
  13     proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE,
  14                             **kwargs)
  15     (outp, outerr) = proc.communicate()
  16     outp = outp.decode('utf-8')
  17     outerr = outerr.decode('utf-8').replace('\\n', '\n')
  18     LOG.debug("Run command: %s\n%s\n%s", cmd, outp, outerr)
  19
  20     assert proc.returncode == 0, "Script '{}' failed:\n{}\n{}\n".format(cmd[0], outp, outerr)
  21
  22     return outp, outerr