fix unit tests

test/test_ad2.py

@@ -362,5 +362,7 @@ class TestAlarmDecoder(TestCase):
         self._decoder._on_read(self, data=b'[00010001000000000A--],005,[f70000051003000008020000000000],"FAULT 05                        "')
         self.assertEquals(self._zone_faulted, 5)
 
+        self._decoder._on_read(self, data=b'[00010001000000000A--],004,[f70000051003000008020000000000],"FAULT 04                        "')
+        self._decoder._on_read(self, data=b'[00010001000000000A--],004,[f70000051003000008020000000000],"FAULT 05                        "')
         self._decoder._on_read(self, data=b'[00010001000000000A--],004,[f70000051003000008020000000000],"FAULT 04                        "')
         self.assertEquals(self._zone_restored, 3)

test/test_devices.py

@@ -81,7 +81,7 @@ class TestSerialDevice(TestCase):
         self._device.interface = '/dev/ttyS0'
         self._device.open(no_reader_thread=True)
 
-        with patch.object(self._device._device, 'read') as mock:
+        with patch.object(self._device._device, 'read', return_value=[1]) as mock:
             with patch('serial.Serial.fileno', return_value=1):
                 with patch.object(select, 'select', return_value=[[1], [], []]):
                     ret = self._device.read()