test_system.py 文件源码

def test_process_iter(self):
        self.assertIn(os.getpid(), [x.pid for x in psutil.process_iter()])
        sproc = get_test_subprocess()
        self.assertIn(sproc.pid, [x.pid for x in psutil.process_iter()])
        p = psutil.Process(sproc.pid)
        p.kill()
        p.wait()
        self.assertNotIn(sproc.pid, [x.pid for x in psutil.process_iter()])

        with mock.patch('psutil.Process',
                        side_effect=psutil.NoSuchProcess(os.getpid())):
            self.assertEqual(list(psutil.process_iter()), [])
        with mock.patch('psutil.Process',
                        side_effect=psutil.AccessDenied(os.getpid())):
            with self.assertRaises(psutil.AccessDenied):
                list(psutil.process_iter())