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from unittest import TestCase
from unittest.mock import Mock, MagicMock, patch
from serial import Serial, SerialException
import sys
import socket
import time
import tempfile
import os
import select
from alarmdecoder.devices import USBDevice, SerialDevice, SocketDevice
from alarmdecoder.util import NoDeviceError, CommError, TimeoutError
# Optional FTDI tests
try:
from pyftdi.pyftdi.ftdi import Ftdi, FtdiError
from usb.core import USBError, Device as USBCoreDevice
have_pyftdi = True
except ImportError:
have_pyftdi = False
# Optional SSL tests
try:
from OpenSSL import SSL, crypto
have_openssl = True
except ImportError:
have_openssl = False
class TestSerialDevice(TestCase):
def setUp(self):
self._device = SerialDevice()
self._device._device = Mock(spec=Serial)
self._device._device.open = Mock()
def tearDown(self):
self._device.close()
### Tests
def test_open(self):
self._device.interface = '/dev/ttyS0'
with patch.object(self._device._device, 'open') as mock:
self._device.open(no_reader_thread=True)
mock.assert_called_with()
def test_open_no_interface(self):
with self.assertRaises(NoDeviceError):
self._device.open(no_reader_thread=True)
self.assertFalse(self._device._running)
def test_open_failed(self):
self._device.interface = '/dev/ttyS0'
with patch.object(self._device._device, 'open', side_effect=[SerialException, ValueError]):
with self.assertRaises(NoDeviceError):
self._device.open(no_reader_thread=True)
with self.assertRaises(NoDeviceError):
self._device.open(no_reader_thread=True)
def test_write(self):
self._device.interface = '/dev/ttyS0'
self._device.open(no_reader_thread=True)
with patch.object(self._device._device, 'write') as mock:
self._device.write(b'test')
mock.assert_called_with(b'test')
def test_write_exception(self):
with patch.object(self._device._device, 'write', side_effect=SerialException):
with self.assertRaises(CommError):
self._device.write(b'test')
def test_read(self):
self._device.interface = '/dev/ttyS0'
self._device.open(no_reader_thread=True)
side_effect = ["t"]
if sys.version_info > (3,):
side_effect = ["t".encode('utf-8')]
with patch.object(self._device._device, 'read', side_effect=side_effect) as mock:
with patch('serial.Serial.fileno', return_value=1):
with patch.object(select, 'select', return_value=[[1], [], []]):
ret = self._device.read()
mock.assert_called_with(1)
def test_read_exception(self):
with patch.object(self._device._device, 'read', side_effect=SerialException):
with patch('serial.Serial.fileno', return_value=1):
with patch.object(select, 'select', return_value=[[1], [], []]):
with self.assertRaises(CommError):
self._device.read()
def test_read_line(self):
side_effect = list("testing\r\n")
if sys.version_info > (3,):
side_effect = [chr(x).encode('utf-8') for x in b"testing\r\n"]
with patch.object(self._device._device, 'read', side_effect=side_effect):
with patch('serial.Serial.fileno', return_value=1):
with patch.object(select, 'select', return_value=[[1], [], []]):
ret = None
try:
ret = self._device.read_line()
except StopIteration:
pass
self.assertEqual(ret, "testing")
def test_read_line_timeout(self):
with patch.object(self._device._device, 'read', return_value=b'a') as mock:
with patch('serial.Serial.fileno', return_value=1):
with patch.object(select, 'select', return_value=[[1], [], []]):
with self.assertRaises(TimeoutError):
self._device.read_line(timeout=0.1)
self.assertIn('a', self._device._buffer.decode('utf-8'))
def test_read_line_exception(self):
with patch.object(self._device._device, 'read', side_effect=[OSError, SerialException]):
with patch('serial.Serial.fileno', return_value=1):
with patch.object(select, 'select', return_value=[[1], [], []]):
with self.assertRaises(CommError):
self._device.read_line()
with self.assertRaises(CommError):
self._device.read_line()
class TestSocketDevice(TestCase):
def setUp(self):
self._device = SocketDevice()
self._device._device = Mock(spec=socket.socket)
def tearDown(self):
self._device.close()
### Tests
def test_open(self):
with patch.object(socket.socket, '__init__', return_value=None):
with patch.object(socket.socket, 'connect', return_value=None) as mock:
self._device.open(no_reader_thread=True)
mock.assert_called_with(self._device.interface)
def test_open_failed(self):
with patch.object(socket.socket, 'connect', side_effect=socket.error):
with self.assertRaises(NoDeviceError):
self._device.open(no_reader_thread=True)
def test_write(self):
with patch.object(socket.socket, '__init__', return_value=None):
with patch.object(socket.socket, 'connect', return_value=None):
self._device.open(no_reader_thread=True)
with patch.object(socket.socket, 'send') as mock:
self._device.write(b'test')
mock.assert_called_with(b'test')
def test_write_exception(self):
side_effects = [socket.error]
if (have_openssl):
side_effects.append(SSL.Error)
with patch.object(self._device._device, 'send', side_effect=side_effects):
with self.assertRaises(CommError):
self._device.write(b'test')
def test_read(self):
with patch.object(socket.socket, '__init__', return_value=None):
with patch.object(socket.socket, 'connect', return_value=None):
self._device.open(no_reader_thread=True)
with patch('socket.socket.fileno', return_value=1):
with patch.object(select, 'select', return_value=[[1], [], []]):
with patch.object(socket.socket, 'recv') as mock:
self._device.read()
mock.assert_called_with(1)
def test_read_exception(self):
with patch('socket.socket.fileno', return_value=1):
with patch.object(select, 'select', return_value=[[1], [], []]):
with patch.object(self._device._device, 'recv', side_effect=socket.error):
with self.assertRaises(CommError):
self._device.read()
def test_read_line(self):
side_effect = list("testing\r\n")
if sys.version_info > (3,):
side_effect = [chr(x).encode('utf-8') for x in b"testing\r\n"]
with patch('socket.socket.fileno', return_value=1):
with patch.object(select, 'select', return_value=[[1], [], []]):
with patch.object(self._device._device, 'recv', side_effect=side_effect):
ret = None
try:
ret = self._device.read_line()
except StopIteration:
pass
self.assertEqual(ret, "testing")
def test_read_line_timeout(self):
with patch('socket.socket.fileno', return_value=1):
with patch.object(select, 'select', return_value=[[1], [], []]):
with patch.object(self._device._device, 'recv', return_value=b'a') as mock:
with self.assertRaises(TimeoutError):
self._device.read_line(timeout=0.1)
self.assertIn('a', self._device._buffer.decode('utf-8'))
def test_read_line_exception(self):
with patch('socket.socket.fileno', return_value=1):
with patch.object(select, 'select', return_value=[[1], [], []]):
with patch.object(self._device._device, 'recv', side_effect=socket.error):
with self.assertRaises(CommError):
self._device.read_line()
with self.assertRaises(CommError):
self._device.read_line()
def test_ssl(self):
if not have_openssl:
return
ssl_key = crypto.PKey()
ssl_key.generate_key(crypto.TYPE_RSA, 2048)
ssl_cert = crypto.X509()
ssl_cert.set_pubkey(ssl_key)
ssl_ca_key = crypto.PKey()
ssl_ca_key.generate_key(crypto.TYPE_RSA, 2048)
ssl_ca_cert = crypto.X509()
ssl_ca_cert.set_pubkey(ssl_ca_key)
self._device.ssl = True
self._device.ssl_key = ssl_key
self._device.ssl_certificate = ssl_cert
self._device.ssl_ca = ssl_ca_cert
fileno, path = tempfile.mkstemp()
# ..there has to be a better way..
with patch.object(socket.socket, '__init__', return_value=None):
with patch.object(socket.socket, 'connect', return_value=None) as mock:
with patch.object(socket.socket, '_sock'):
with patch.object(socket.socket, 'fileno', return_value=fileno):
try:
self._device.open(no_reader_thread=True)
except SSL.SysCallError as ex:
pass
os.close(fileno)
os.unlink(path)
mock.assert_called_with(self._device.interface)
self.assertIsInstance(self._device._device, SSL.Connection)
def test_ssl_exception(self):
if not have_openssl:
return
self._device.ssl = True
self._device.ssl_key = 'None'
self._device.ssl_certificate = 'None'
self._device.ssl_ca = 'None'
fileno, path = tempfile.mkstemp()
# ..there has to be a better way..
with patch.object(socket.socket, '__init__', return_value=None):
with patch.object(socket.socket, 'connect', return_value=None) as mock:
with patch.object(socket.socket, '_sock'):
with patch.object(socket.socket, 'fileno', return_value=fileno):
with self.assertRaises(CommError):
try:
self._device.open(no_reader_thread=True)
except SSL.SysCallError as ex:
pass
os.close(fileno)
os.unlink(path)
if have_pyftdi:
class TestUSBDevice(TestCase):
def setUp(self):
self._device = USBDevice()
self._device._device = Mock(spec=Ftdi)
self._device._device.usb_dev = Mock(spec=USBCoreDevice)
self._device._device.usb_dev.bus = 0
self._device._device.usb_dev.address = 0
self._attached = False
self._detached = False
def tearDown(self):
self._device.close()
### Library events
def attached_event(self, sender, *args, **kwargs):
self._attached = True
def detached_event(self, sender, *args, **kwargs):
self._detached = True
### Tests
def test_find_default_param(self):
with patch.object(Ftdi, 'find_all', return_value=[(0, 0, 'AD2', 1, 'AD2')]):
device = USBDevice.find()
self.assertEqual(device.interface, 'AD2')
def test_find_with_param(self):
with patch.object(Ftdi, 'find_all', return_value=[(0, 0, 'AD2-1', 1, 'AD2'), (0, 0, 'AD2-2', 1, 'AD2')]):
device = USBDevice.find((0, 0, 'AD2-1', 1, 'AD2'))
self.assertEqual(device.interface, 'AD2-1')
device = USBDevice.find((0, 0, 'AD2-2', 1, 'AD2'))
self.assertEqual(device.interface, 'AD2-2')
def test_events(self):
self.assertFalse(self._attached)
self.assertFalse(self._detached)
# this is ugly, but it works.
with patch.object(USBDevice, 'find_all', return_value=[(0, 0, 'AD2-1', 1, 'AD2'), (0, 0, 'AD2-2', 1, 'AD2')]):
USBDevice.start_detection(on_attached=self.attached_event, on_detached=self.detached_event)
with patch.object(USBDevice, 'find_all', return_value=[(0, 0, 'AD2-2', 1, 'AD2')]):
USBDevice.find_all()
time.sleep(1)
USBDevice.stop_detection()
self.assertTrue(self._attached)
self.assertTrue(self._detached)
def test_find_all(self):
with patch.object(USBDevice, 'find_all', return_value=[]) as mock:
devices = USBDevice.find_all()
self.assertEqual(devices, [])
def test_find_all_exception(self):
with patch.object(Ftdi, 'find_all', side_effect=[USBError('testing'), FtdiError]) as mock:
with self.assertRaises(CommError):
devices = USBDevice.find_all()
with self.assertRaises(CommError):
devices = USBDevice.find_all()
def test_interface_serial_number(self):
self._device.interface = 'AD2USB'
self.assertEqual(self._device.interface, 'AD2USB')
self.assertEqual(self._device.serial_number, 'AD2USB')
self.assertEqual(self._device._device_number, 0)
def test_interface_index(self):
self._device.interface = 1
self.assertEqual(self._device.interface, 1)
self.assertEqual(self._device.serial_number, None)
self.assertEqual(self._device._device_number, 1)
def test_open(self):
self._device.interface = 'AD2USB'
with patch.object(self._device._device, 'open') as mock:
self._device.open(no_reader_thread=True)
mock.assert_called()
def test_open_failed(self):
self._device.interface = 'AD2USB'
with patch.object(self._device._device, 'open', side_effect=[USBError('testing'), FtdiError]):
with self.assertRaises(NoDeviceError):
self._device.open(no_reader_thread=True)
with self.assertRaises(NoDeviceError):
self._device.open(no_reader_thread=True)
def test_write(self):
self._device.interface = 'AD2USB'
self._device.open(no_reader_thread=True)
with patch.object(self._device._device, 'write_data') as mock:
self._device.write(b'test')
mock.assert_called_with(b'test')
def test_write_exception(self):
with patch.object(self._device._device, 'write_data', side_effect=FtdiError):
with self.assertRaises(CommError):
self._device.write(b'test')
def test_read(self):
self._device.interface = 'AD2USB'
self._device.open(no_reader_thread=True)
with patch.object(self._device._device, 'read_data') as mock:
self._device.read()
mock.assert_called_with(1)
def test_read_exception(self):
with patch.object(self._device._device, 'read_data', side_effect=[USBError('testing'), FtdiError]):
with self.assertRaises(CommError):
self._device.read()
with self.assertRaises(CommError):
self._device.read()
def test_read_line(self):
with patch.object(self._device._device, 'read_data', side_effect=list("testing\r\n")):
ret = None
try:
ret = self._device.read_line()
except StopIteration:
pass
self.assertEqual(ret, b"testing")
def test_read_line_timeout(self):
with patch.object(self._device._device, 'read_data', return_value='a') as mock:
with self.assertRaises(TimeoutError):
self._device.read_line(timeout=0.1)
self.assertIn('a', self._device._buffer)
def test_read_line_exception(self):
with patch.object(self._device._device, 'read_data', side_effect=[USBError('testing'), FtdiError]):
with self.assertRaises(CommError):
self._device.read_line()
with self.assertRaises(CommError):
self._device.read_line()
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