def test_ptracer_basic(self):
syscalls = []
with ptracer.context(syscalls.append):
f = open('/dev/zero', 'r')
f.close()
self.assertGreater(len(syscalls), 0)
def _trace(pattern):
syscalls[:] = []
with ptracer.context(syscalls.append, filter=pattern):
f = open('/dev/null', 'w')
f.close()
f = open('/dev/zero', 'r')
f.close()
try:
open('/dev/nonexistent', 'r')
except IOError:
pass
def test_ptracer_threading(self):
syscalls = []
def _thread():
f = open('/dev/zero', 'r')
f.close()
flt = ptracer.SysCallPattern(name='open', args=[b'/dev/zero'])
with ptracer.context(syscalls.append, filter=flt):
thread = threading.Thread(target=_thread)
thread.start()
thread.join()
self.assertEqual(len(syscalls), 1)
def test_ptracer__fail_04(self):
with self.assertRaisesRegexp(ptracer.PtracerError,
'Operation not permitted'):
with ptracer.context(lambda s: None):
f = open('/dev/zero', 'r')
f.close()