Wait for thread to start

tests/modules/lib/terminal.py

@@ -61,6 +61,7 @@ def __init__(self, lib, dim, cmd, args, cwd=None, env=None):
  self.buffer = []
  self.child_lock = threading.Lock()
  self.shutdown_event = threading.Event()
+ self.started_event = threading.Event()
 
  def run(self):
  with self.child_lock:
@@ -70,6 +71,7 @@ def run(self):
  child.setwinsize(self.dim.rows, self.dim.cols)
  sleep(0.5)
  self.child = child
+ self.started_event.set()
  status = None
  while status is None and not self.shutdown_event.is_set():
  try:
@@ -270,6 +272,7 @@ def do_terminal_tests(tests, cmd, dim, args, env, suite, cwd=None, fin_cb=None,
  env=env,
  )
  p.start()
+ p.started_event.wait()
 
  ret = True