346         self.assertNotIn(p, self.active_children())
347         self.assertTrue(type(self.active_children()) is list)
354         self.assertIn(p, self.active_children())
367         self.assertNotIn(p, self.active_children())
409         self.assertIn(p, self.active_children())
445         self.assertNotIn(p, self.active_children())
470         self.assertEqual(type(self.active_children()), list)
473         self.assertNotIn(p, self.active_children())
477         self.assertIn(p, self.active_children())
480         self.assertNotIn(p, self.active_children())
5512         while len(multiprocessing.active_children()) > 1:
5738     active_children = staticmethod(multiprocessing.active_children)  variable in ProcessesMixin
5790         while len(multiprocessing.active_children()) > 1:
5822     active_children = staticmethod(multiprocessing.dummy.active_children)  variable in ThreadsMixin