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import functools
import unittest
from siobrultech_protocols.gem import packets
from tests.gem.packet_test_data import assert_packet, read_packet
packet_maker = functools.partial(
packets.Packet,
packet_format=packets.BIN32_ABS,
voltage=120.0,
absolute_watt_seconds=[0] * packets.BIN32_NET.num_channels,
device_id=123456,
serial_number=123456,
seconds=0,
pulse_counts=[0] * packets.GEMPacketFormat.NUM_PULSE_COUNTERS,
temperatures=list([0.0] * packets.GEMPacketFormat.NUM_TEMPERATURE_SENSORS),
aux=None,
)
class TestPacketFormats(unittest.TestCase):
def test_bin32_abs(self):
check_packet("BIN32-ABS.bin", packets.BIN32_ABS)
def test_bin32_net(self):
check_packet("BIN32-NET.bin", packets.BIN32_NET)
def test_bin48_abs(self):
check_packet("BIN48-ABS.bin", packets.BIN48_ABS)
def test_bin48_net(self):
check_packet("BIN48-NET.bin", packets.BIN48_NET)
def test_bin48_net_time(self):
check_packet("BIN48-NET-TIME.bin", packets.BIN48_NET_TIME)
def test_bin48_net_time_tricky(self):
"""BIN48_NET and BIN48_NET_TIME packets both have the same packet type
code, so in order to detect the difference you must try to parse as
BIN48_NET first, and if that fails try BIN48_NET_TIME. However, if
the parser just checks the checksum and not the footer, it's possible
for a BIN48_NET_TIME packet to be mistaken for a BIN48_NET. This is
one such packet."""
try:
parse_packet("BIN48-NET-TIME_tricky.bin", packets.BIN48_NET)
self.fail("Should have thrown")
except packets.MalformedPacketException:
pass
check_packet("BIN48-NET-TIME_tricky.bin", packets.BIN48_NET_TIME)
def test_ecm_1240(self):
check_packet("ECM-1240.bin", packets.ECM_1240)
def test_short_packet(self):
packet = read_packet("BIN32-NET.bin")
with self.assertRaisesRegex(
packets.MalformedPacketException, "Packet too short."
):
packets.BIN32_NET.parse(packet[:-1])
def test_packet_with_extra_after(self):
data = bytearray()
data.extend(read_packet("BIN32-NET.bin"))
data.extend(read_packet("BIN32-ABS.bin"))
packet = packets.BIN32_NET.parse(data)
assert_packet("BIN32-NET.bin", packet)
class TestPacketDeltaComputation(unittest.TestCase):
def test_packet_delta_seconds(self):
packet = parse_packet("BIN32-ABS.bin", packets.BIN32_ABS)
self.assertEqual(997492, packet.seconds)
self.assertEqual(997493, packet.delta_seconds(2**24 - 1))
self.assertEqual(1000000, packet.delta_seconds(2**24 - (1000000 - 997492)))
def test_packet_delta_pulses(self):
packet = parse_packet("BIN48-NET-TIME_tricky.bin", packets.BIN48_NET_TIME)
# All the pulse counts in our packets are 0, so let's fake some out
packet.pulse_counts = [100, 200, 300, 400]
self.assertEqual(
[1100, 1200, 1300, 1400],
[
packet.delta_pulse_count(i, 2**24 - 1000)
for i in range(0, len(packet.pulse_counts))
],
)
def test_packet_delta_aux(self):
packet = parse_packet("ECM-1240.bin", packets.ECM_1240)
self.assertEqual(
[10, 3, 5, 3, 5],
[packet.delta_aux_count(i, 60) for i in range(0, len(packet.aux))],
)
def test_packet_delta_absolute_watt_seconds(self):
packet = parse_packet("BIN32-ABS.bin", packets.BIN32_ABS)
self.assertEqual(
[
3123664,
9249700,
195388151,
100917236,
7139112,
1440,
4,
3,
14645520,
111396601,
33259670,
38296448,
1108415,
2184858,
5191049,
1,
71032651,
60190845,
47638292,
12017483,
36186563,
14681918,
69832947,
37693,
60941899,
1685614,
902,
799182,
302590,
3190972,
5,
647375119,
],
packet.absolute_watt_seconds,
)
self.assertEqual(
[
packet.absolute_watt_seconds[i] + 1000
for i in range(0, len(packet.absolute_watt_seconds))
],
[
packet.delta_absolute_watt_seconds(i, 2**40 - 1000)
for i in range(0, len(packet.absolute_watt_seconds))
],
)
def test_packet_delta_polarized_watt_seconds(self):
packet = parse_packet("BIN32-NET.bin", packets.BIN32_NET)
# Packet didn't have any negative numbers, so let's do some manual ones
packet.polarized_watt_seconds = [
-1600 + 100 * i for i in range(0, packet.num_channels)
]
self.assertEqual(
[
packet.polarized_watt_seconds[i] + 1000 + 2**39
for i in range(0, len(packet.polarized_watt_seconds))
],
[
packet.delta_polarized_watt_seconds(i, 2**39 - 1000)
for i in range(0, len(packet.polarized_watt_seconds))
],
)
class TestPacketAverageComputation(unittest.TestCase):
def test_packet_average_power_no_time_passed(self):
packet_a = packet_maker(
absolute_watt_seconds=[10] * packets.BIN32_ABS.num_channels,
)
self.assertEqual(packet_a.get_average_power(0, packet_a), 0)
def test_packet_average_power(self):
packet_a = packet_maker(
absolute_watt_seconds=[10] * packets.BIN32_ABS.num_channels,
)
packet_b = packet_maker(
absolute_watt_seconds=[20] * packets.BIN32_ABS.num_channels,
seconds=10,
)
self.assertEqual(packet_a.get_average_power(0, packet_b), 1.0)
self.assertEqual(packet_b.get_average_power(0, packet_a), 1.0)
def test_packet_average_power_net_metering_mixed(self):
packet_a = packet_maker(
absolute_watt_seconds=[10] * packets.BIN32_NET.num_channels,
packet_format=packets.BIN32_NET,
polarized_watt_seconds=[0] * packets.BIN32_NET.num_channels,
)
packet_b = packet_maker(
absolute_watt_seconds=[40] * packets.BIN32_NET.num_channels,
packet_format=packets.BIN32_NET,
polarized_watt_seconds=[10] * packets.BIN32_NET.num_channels,
seconds=10,
)
self.assertEqual(packet_a.get_average_power(0, packet_b), 1.0)
self.assertEqual(packet_b.get_average_power(0, packet_a), 1.0)
def test_produced_power(self):
packet_a = packet_maker(
absolute_watt_seconds=[0] * packets.BIN32_NET.num_channels,
packet_format=packets.BIN32_NET,
polarized_watt_seconds=[0] * packets.BIN32_NET.num_channels,
)
packet_b = packet_maker(
absolute_watt_seconds=[10] * packets.BIN32_NET.num_channels,
packet_format=packets.BIN32_NET,
polarized_watt_seconds=[10] * packets.BIN32_NET.num_channels,
seconds=10,
)
self.assertEqual(packet_a.get_average_power(0, packet_b), -1.0)
self.assertEqual(packet_b.get_average_power(0, packet_a), -1.0)
def test_pulse_rate(self):
packet_a = packet_maker(
pulse_counts=[0] * packets.BIN32_ABS.NUM_PULSE_COUNTERS,
)
packet_b = packet_maker(
pulse_counts=[15] * packets.BIN32_ABS.NUM_PULSE_COUNTERS,
seconds=10,
)
self.assertEqual(packet_a.get_average_pulse_rate(0, packet_b), 1.5)
self.assertEqual(packet_b.get_average_pulse_rate(0, packet_a), 1.5)
def test_pulse_rate_no_time_passed(self):
packet_a = packet_maker(
pulse_counts=[0] * packets.BIN32_ABS.NUM_PULSE_COUNTERS,
)
self.assertEqual(packet_a.get_average_pulse_rate(0, packet_a), 0)
def test_aux_rate(self):
packet_a = packet_maker(
packet_format=packets.ECM_1240, aux=[0] * packets.ECM_1240.num_aux_channels
)
packet_b = packet_maker(
packet_format=packets.ECM_1240,
aux=[15] * packets.ECM_1240.num_aux_channels,
seconds=10,
)
self.assertEqual(packet_a.get_average_aux_rate_of_change(0, packet_b), 1.5)
self.assertEqual(packet_b.get_average_aux_rate_of_change(0, packet_a), 1.5)
def test_aux_rate_no_time_passed(self):
packet_a = packet_maker(
packet_format=packets.ECM_1240, aux=[0] * packets.ECM_1240.num_aux_channels
)
self.assertEqual(packet_a.get_average_aux_rate_of_change(0, packet_a), 0)
def check_packet(packet_file_name: str, packet_format: packets.PacketFormat):
packet = parse_packet(packet_file_name, packet_format)
assert_packet(packet_file_name, packet)
raw_data = packet_format.format(packet)
reparsed_packet = packet_format.parse(raw_data)
assert_packet(packet_file_name, reparsed_packet)
def parse_packet(packet_file_name: str, packet_format: packets.PacketFormat):
return packet_format.parse(read_packet(packet_file_name))
if __name__ == "__main__":
unittest.main()
|
