test_bsd.py 文件源码

def test_cpu_stats_ctx_switches(self):
        with open('/proc/stat', 'rb') as f:
            for line in f:
                if line.startswith(b'ctxt'):
                    ctx_switches = int(line.split()[1])
                    break
            else:
                raise ValueError("couldn't find line")
        self.assertAlmostEqual(
            psutil.cpu_stats().ctx_switches, ctx_switches, delta=1000)