Expand Up @@ -907,20 +907,26 @@ def __init__(self, newarg=None): def test_after_fork(self): # Test the global Random instance gets reseeded in child r, w = os.pipe() if os.fork() == 0: pid = os.fork() if pid == 0: # child process try: val = random.getrandbits(128) with open(w, "w") as f: f.write(str(val)) finally: os._exit(0) else: # parent process os.close(w) val = random.getrandbits(128) with open(r, "r") as f: child_val = eval(f.read()) self.assertNotEqual(val, child_val)
pid, status = os.waitpid(pid, 0) self.assertEqual(status, 0)

if __name__ == "__main__": unittest.main()