def test_Accum_getRecord(self):
"""Test extraction of record from an accumulator."""
accum = weewx.accum.Accum(TimeSpan(start_ts, stop_ts))
for record in self.dataset:
accum.addRecord(record)
extracted = accum.getRecord()
self.assertEqual(extracted['dateTime'], self.dataset[-1]['dateTime'])
self.assertEqual(extracted['usUnits'], weewx.US)
sum_t = 0
count_t = 0
for rec in self.dataset:
if rec['outTemp'] is not None:
sum_t += rec['outTemp']
count_t += 1
self.assertEqual(extracted['outTemp'], sum_t / count_t)
max_wind = 0
max_dir = None
for rec in self.dataset:
if rec['windGust'] is not None and rec['windGust'] > max_wind:
max_wind = rec['windGust']
max_dir = rec['windGustDir']
self.assertEqual(extracted['windGust'], max_wind)
self.assertEqual(extracted['windGustDir'], max_dir)
rain_sum = 0
for rec in self.dataset:
if rec['rain'] is not None:
rain_sum += rec['rain']
self.assertEqual(extracted['rain'], rain_sum)
def test_issue_737(self):
accum = weewx.accum.Accum(TimeSpan(start_ts, stop_ts))
for packet in self.dataset:
packet['windrun'] = None
accum.addRecord(packet)
# Extract the record out of the accumulator
record = accum.getRecord()
self.assertIsNone(record['windrun'])
def test_Accum_unit_change(self):
# Change the units used by a record mid-stream
self.dataset[5]['usUnits'] = weewx.METRICWX
# This should result in a ValueError
with self.assertRaises(ValueError):
accum = weewx.accum.Accum(TimeSpan(start_ts, stop_ts))
for record in self.dataset:
accum.addRecord(record)
def test_null_wind_gust_dir(self):
# If LOOP packets windGustDir=None, the accumulator should not substitute windDir.
# This is a regression test that tests that.
accum = weewx.accum.Accum(TimeSpan(start_ts, stop_ts))
# Add the dataset to the accumulator. Null out windGustDir first.
for record in self.dataset:
record_test = dict(record)
record_test['windGustDir'] = None
accum.addRecord(record_test)
# Extract the record out of the accumulator
accum_record = accum.getRecord()
# windGustDir should match the windDir seen at max wind:
self.assertIsNone(accum_record['windGustDir'])
def test_Accum_with_string(self):
"""Test records with string literals in them."""
for i, record in enumerate(self.dataset):
record['stringType'] = "AString%d" % i
# As of V4.6, adding a string to the default accumulators should no longer result in an
# exception
accum = weewx.accum.Accum(TimeSpan(start_ts, stop_ts))
for record in self.dataset:
accum.addRecord(record)
# Try it again, but this time specifying a FirstLast accumulator for type 'stringType':
weewx.accum.accum_dict.extend({'stringType': {'accumulator': 'firstlast', 'extractor': 'last'}})
accum = weewx.accum.Accum(TimeSpan(start_ts, stop_ts))
for record in self.dataset:
accum.addRecord(record)
# The value extracted for the string should be the last one seen
rec = accum.getRecord()
self.assertEqual(rec['stringType'], "AString%d" % (len(self.dataset) - 1))
def test_no_wind_gust_dir(self):
# If LOOP packets do not have windGustDir at all, then the accumulator is supposed to
# substitute windDir. This is a regression test that tests that.
accum = weewx.accum.Accum(TimeSpan(start_ts, stop_ts))
windMax = None
windMaxDir = None
# Add the dataset to the accumulator. Null out windGustDir first.
for record in self.dataset:
record_test = dict(record)
del record_test['windGustDir']
if windMax is None \
or (record_test['windSpeed'] is not None
and record_test['windSpeed'] > windMax):
windMax = record_test['windSpeed']
windMaxDir = record_test['windDir']
accum.addRecord(record_test)
# Extract the record out of the accumulator
accum_record = accum.getRecord()
# windGustDir should match the windDir seen at max wind:
self.assertEqual(accum_record['windGustDir'], windMaxDir)
