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test_error.py
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test_error.py
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from decimal import Decimal
from unittest import mock
from serial.serialutil import SerialException
from django.utils import timezone
from django.test import TestCase
import pytz
from dsmr_backend.tests.mixins import InterceptStdoutMixin
from dsmr_datalogger.models.reading import DsmrReading
from dsmr_datalogger.models.settings import DataloggerSettings
class TestDataloggerError(InterceptStdoutMixin, TestCase):
def _dsmr_dummy_data(self):
""" Returns INCOMPLETE telegram. """
return [
# We start halfway, forcing us to discard/ignore it.
"1-0:99.97.0(1)(0-0:96.7.19)(000101000001W)(2147483647*s)\r\n",
"1-0:32.32.0(00000)\r\n",
"1-0:32.36.0(00000)\r\n",
"0-0:96.13.1()\r\n",
"0-0:96.13.0()\r\n",
"1-0:31.7.0(000*A)\r\n",
"1-0:21.7.0(00.143*kW)\r\n",
"1-0:22.7.0(00.000*kW)\r\n",
"!74B0\n",
# 10 seconds later we should see this one.
"/KFM5KAIFA-METER\r\n",
"\r\n",
"1-3:0.2.8(42)\r\n",
"0-0:1.0.0(160303164347W)\r\n",
"0-0:96.1.1(*******************************)\r\n",
"1-0:1.8.1(001073.079*kWh)\r\n",
"1-0:1.8.2(001263.199*kWh)\r\n",
"1-0:2.8.1(000000.000*kWh)\r\n",
"1-0:2.8.2(000000.000*kWh)\r\n",
"0-0:96.14.0(0002)\r\n",
"1-0:1.7.0(00.143*kW)\r\n",
"1-0:2.7.0(00.000*kW)\r\n",
"0-0:96.7.21(00006)\r\n",
"0-0:96.7.9(00003)\r\n",
"1-0:99.97.0(1)(0-0:96.7.19)(000101000001W)(2147483647*s)\r\n",
"1-0:32.32.0(00000)\r\n",
"1-0:32.36.0(00000)\r\n",
"0-0:96.13.1()\r\n",
"0-0:96.13.0()\r\n",
"1-0:31.7.0(000*A)\r\n",
"1-0:21.7.0(00.143*kW)\r\n",
"1-0:22.7.0(00.000*kW)\r\n",
"!A97E\n",
]
@mock.patch('serial.Serial.open')
@mock.patch('serial.Serial.readline')
def _fake_dsmr_reading(self, serial_readline_mock, serial_open_mock):
""" Fake & process an DSMR vX telegram reading. """
serial_open_mock.return_value = None
serial_readline_mock.side_effect = self._dsmr_dummy_data()
self._intercept_command_stdout('dsmr_datalogger')
def test_telegram_buffer_reset(self):
""" Test whether an incomplete telegram gets dicarded. """
self.assertFalse(DsmrReading.objects.exists())
# Regression raises: django.db.utils.IntegrityError: NOT NULL constraint failed:
# dsmr_datalogger_dsmrreading.timestamp
self._fake_dsmr_reading()
self.assertEqual(DsmrReading.objects.count(), 1)
@mock.patch('serial.Serial.open')
@mock.patch('serial.Serial.readline')
def test_interrupt(self, serial_readline_mock, serial_open_mock):
""" Test whether interrupts are handled. """
serial_open_mock.return_value = None
# First call raises expected exception, second call should just return data.
eintr_error = SerialException('read failed: [Errno 4] Interrupted system call')
serial_readline_mock.side_effect = [eintr_error] + self._dsmr_dummy_data()
self.assertFalse(DsmrReading.objects.exists())
self._intercept_command_stdout('dsmr_datalogger')
self.assertTrue(DsmrReading.objects.exists())
# Everything else should be reraised.
serial_readline_mock.side_effect = SerialException('Unexpected error from Serial')
DsmrReading.objects.all().delete()
self.assertFalse(DsmrReading.objects.exists())
with self.assertRaises(SerialException):
self._intercept_command_stdout('dsmr_datalogger')
self.assertFalse(DsmrReading.objects.exists())
class TestDataloggerCrcError(InterceptStdoutMixin, TestCase):
def _dsmr_dummy_data(self):
""" Returns invalid telegram. """
return [
"/KFM5KAIFA-METER\r\n",
"\r\n",
"1-3:0.2.8(42)\r\n",
"0-0:1.0.0(160303164347W)\r\n",
"0-0:96.1.1(*******************************)\r\n",
"1-0:1.8.1(001073.079*kWh)\r\n",
"1-0:1.8.2(001263.199*kWh)\r\n",
"1-0:2.8.1(000000.000*kWh)\r\n",
"1-0:2.8.2(000000.000*kWh)\r\n",
"0-0:96.14.0(0002)\r\n",
"1-0:1.7.0(00.143*kW)\r\n",
"1-0:2.7.0(00.000*kW)\r\n",
"0-0:96.7.21(00006)\r\n",
"0-0:96.7.9(00003)\r\n",
"1-0:99.97.0(1)(0-0:96.7.19)(000101000001W)(2147483647*s)\r\n",
"1-0:32.32.0(00000)\r\n",
"1-0:32.36.0(00000)\r\n",
"0-0:96.13.1()\r\n",
"0-0:96.13.0()\r\n",
"1-0:31.7.0(000*A)\r\n",
"1-0:21.7.0(00.143*kW)\r\n",
"1-0:22.7.0(00.000*kW)\r\n",
"!ABCD\n", # <<< Invalid CRC.
]
@mock.patch('serial.Serial.open')
@mock.patch('serial.Serial.readline')
def test_fail(self, serial_readline_mock, serial_open_mock):
""" Fake & process an DSMR vX telegram reading. """
serial_open_mock.return_value = None
serial_readline_mock.side_effect = self._dsmr_dummy_data()
self.assertFalse(DsmrReading.objects.exists())
self._intercept_command_stdout('dsmr_datalogger')
self.assertFalse(DsmrReading.objects.exists())
@mock.patch('serial.Serial.open')
@mock.patch('serial.Serial.readline')
def test_okay(self, serial_readline_mock, serial_open_mock):
""" Fake & process an DSMR vX telegram reading. """
serial_open_mock.return_value = None
serial_readline_mock.side_effect = self._dsmr_dummy_data()
# The big difference here is that CRC verification should be off.
datalogger_settings = DataloggerSettings.get_solo()
datalogger_settings.verify_telegram_crc = False
datalogger_settings.save()
self.assertFalse(DsmrReading.objects.exists())
self._intercept_command_stdout('dsmr_datalogger')
self.assertTrue(DsmrReading.objects.exists())
class TestDataloggerDuplicateData(InterceptStdoutMixin, TestCase):
""" Test Iskra meter, DSMR v5.0, with somewhat duplicate data. """
def _dsmr_dummy_data(self):
return [
"/ISK5\\2M550T-1011\r\n",
"\r\n",
"1-3:0.2.8(50)\r\n",
"0-0:1.0.0(170110204056W)\r\n",
"0-0:96.1.1(xxx)\r\n",
"1-0:1.8.1(000012.345*kWh)\r\n",
"1-0:1.8.2(000067.890*kWh)\r\n",
"1-0:2.8.1(000123.456*kWh)\r\n",
"1-0:2.8.2(000789.012*kWh)\r\n",
"0-0:96.14.0(0002)\r\n",
"1-0:1.7.0(00.321*k\n",
"/ISK5\\2M550T-1011\r\n",
"\r\n",
"1-3:0.2.8(50)\r\n",
"0-0:1.0.0(170110204057W)\r\n",
"0-0:96.1.1(xxx)\r\n",
"1-0:1.8.1(009012.345*kWh)\r\n",
"1-0:1.8.2(009067.890*kWh)\r\n",
"1-0:2.8.1(009123.456*kWh)\r\n",
"1-0:2.8.2(009789.012*kWh)\r\n",
"0-0:96.14.0(0002)\r\n",
"1-0:1.7.0(00.320*kW)\r\n",
"1-0:2.7.0(00.000*kW)\r\n",
"0-0:96.7.21(00005)\r\n",
"0-0:96.7.9(00002)\r\n",
"1-0:99.97.0()\r\n",
"1-0:32.32.0(00000)\r\n",
"1-0:52.32.0(00000)\r\n",
"1-0:72.32.0(00000)\r\n",
"1-0:32.36.0(00001)\r\n",
"1-0:52.36.0(00001)\r\n",
"1-0:72.36.0(00001)\r\n",
"0-0:96.13.0()\r\n",
"1-0:32.7.0(227.0*V)\r\n",
"1-0:52.7.0(228.3*V)\r\n",
"1-0:72.7.0(230.4*V)\r\n",
"1-0:31.7.0(000*A)\r\n",
"1-0:51.7.0(000*A)\r\n",
"1-0:71.7.0(000*A)\r\n",
"1-0:21.7.0(00.152*kW)\r\n",
"1-0:41.7.0(00.052*kW)\r\n",
"1-0:61.7.0(00.118*kW)\r\n",
"1-0:22.7.0(00.000*kW)\r\n",
"1-0:42.7.0(00.000*kW)\r\n",
"1-0:62.7.0(00.000*kW)\r\n",
"0-1:24.1.0(003)\r\n",
"0-1:96.1.0(xxx)\r\n",
"0-1:24.2.1(170110204009W)(00123.456*m3)\r\n",
"!469F\r\n"
]
@mock.patch('serial.Serial.open')
@mock.patch('serial.Serial.readline')
def _fake_dsmr_reading(self, serial_readline_mock, serial_open_mock):
""" Fake & process an DSMR vX telegram reading. """
serial_open_mock.return_value = None
serial_readline_mock.side_effect = self._dsmr_dummy_data()
self.assertFalse(DsmrReading.objects.exists())
self._intercept_command_stdout('dsmr_datalogger')
self.assertTrue(DsmrReading.objects.exists())
def test_reading_creation(self):
""" Test whether dsmr_datalogger can insert a reading. """
self.assertFalse(DsmrReading.objects.exists())
self._fake_dsmr_reading()
self.assertTrue(DsmrReading.objects.exists())
@mock.patch('django.utils.timezone.now')
def test_reading_values(self, now_mock):
""" Test whether dsmr_datalogger reads the correct values. """
now_mock.return_value = timezone.make_aware(timezone.datetime(2016, 4, 10, hour=14, minute=30, second=15))
self._fake_dsmr_reading()
self.assertTrue(DsmrReading.objects.exists())
reading = DsmrReading.objects.get()
self.assertEqual(
reading.timestamp,
timezone.datetime(2017, 1, 10, 19, 40, 57, tzinfo=pytz.UTC)
)
self.assertEqual(reading.electricity_delivered_1, Decimal('9012.345'))
self.assertEqual(reading.electricity_returned_1, Decimal('9123.456'))
self.assertEqual(reading.electricity_delivered_2, Decimal('9067.890'))
self.assertEqual(reading.electricity_returned_2, Decimal('9789.012'))
self.assertEqual(reading.electricity_currently_delivered, Decimal('0.320'))
self.assertEqual(reading.electricity_currently_returned, Decimal('0'))
self.assertEqual(
reading.extra_device_timestamp,
timezone.datetime(2017, 1, 10, 19, 40, 9, tzinfo=pytz.UTC)
)
self.assertEqual(reading.extra_device_delivered, Decimal('123.456'))