Tests that should pass with myhdl simulation pause and quit

test_simulation_pause.py

import myhdl
from myhdl import instance, delay, now

def test():
  @instance
  def tbstim():
    yield delay(10)
    print("{:<8d} ".format(now()))
    yield delay(1000)
    print("{:<8d} ".format(now()))
    for _ in range(10):
      yield delay(1000)
      
  return tbstim

sim1 = myhdl.Simulation(test())
sim1.run(1000)
# sim1 is "puased"

# try and create a second, third, forth simulation
for ii in range(4):
  try:
      another_sim = myhdl.Simulation(test())
      # should throw an error
  except myhdl.SimulationError as err:
      print(err)

# generating more sims should have failed
sim1.run(1000)