def validate_scenario(request):
simulation = subprocess.Popen(adsm_executable_command() + ['--dry-run'],
shell=(platform.system() != 'Darwin'),
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
stdout, stderr = simulation.communicate() # still running while we work on python validation
simulation.wait() # simulation will process db then exit
print("C Engine Exit Code:", simulation.returncode)
context = {'dry_run_passed': simulation.returncode == 0 and not stderr,
'sim_output': stdout.decode() + stderr.decode(),
'whole_scenario_warnings': whole_scenario_validation(),
'base_page': 'ScenarioCreator/Validation.html'}
return render(request, 'ScenarioCreator/MainPanel.html', context)
