def test_moving_stddev_of_all_measurements(sample_data, sample_measurement,
sample_database,
database_with_data):
database_client = DatabaseClient(database_with_data,
db_name=sample_database)
expected = statistics.stdev(sample_data)
actual = database_client.moving_stddev(
sample_measurement, time_window='{}s'.format(len(sample_data) + 1))
assert expected == actual
def test_moving_stddev_of_last_3_measurements(sample_data, sample_measurement,
sample_database,
database_with_data):
database_client = DatabaseClient(database_with_data,
db_name=sample_database)
expected = statistics.stdev(sample_data[-3:])
actual = database_client.moving_stddev(sample_measurement,
time_window='4s')
assert expected == actual
def test_moving_stddev_without_measurements(sample_measurement,
sample_database, database):
database_client = DatabaseClient(database, db_name=sample_database)
with pytest.raises(RuntimeError):
database_client.moving_stddev(sample_measurement, time_window='0s')