test.py

#!/usr/bin/env python3

from builtins import str
import sys
import os
import subprocess

thread_timeout = 20

from vmrunner import vmrunner
from vmrunner.prettify import color


# Get an auto-created VM from the vmrunner
vm = vmrunner.vms[0]

counter = 0

def count(trigger_line):
  global counter
  counter += 1

  if counter == 3:
    finish()

def finish():
  vm.exit(0, "DNS resolution test succeeded")

# Add custom event-handler
#vm.on_output("Resolved IP address of google.com with DNS server 8.8.8.8", count)
vm.on_output("Resolved IP address of theguardian.com with DNS server 4.2.2.1", count)
vm.on_output("Resolved IP address of github.com with DNS server 4.2.2.1", count)
vm.on_output("some_address_that_doesnt_exist.com couldn't be resolved", count)

# Boot the VM, taking a timeout as parameter
#vm.boot(thread_timeout)
#if name is passed execute that do not clean and do not rebuild..
if len(sys.argv) > 1:
    vm.boot(image_name=str(sys.argv[1]))
else:
    vm.boot(thread_timeout,image_name='net_dns.elf.bin')