def test_get_rate_raises(pre_state, time, value, raise_of, errmsg):
store = {"foo": pre_state}
with pytest.raises(GetRateError, match=errmsg):
get_rate(store, "foo", time, value, raise_overflow=raise_of)
assert store["foo"] == (time, value)
def test_get_rate(pre_state, time, value, raise_of, expected):
store = {"foo": pre_state}
result = get_rate(store, "foo", time, value, raise_overflow=raise_of)
assert result == expected
assert store["foo"] == (time, value)
def _check_trend(
value_store,
temp: float,
params: TrendComputeDict,
output_unit: str,
crit_temp: Optional[float],
crit_temp_lower: Optional[float],
unique_name: str,
) -> Generator[Result, None, None]:
trend_range_min = params["period"]
this_time = time.time()
# current rate since last check
rate = get_rate(
value_store=value_store,
key="temp.%s.delta" % unique_name,
time=this_time,
value=temp,
)
# average trend, initialized with initial temperature value on first check
rate_avg = get_average(
value_store=value_store,
key="temp.%s.trend" % unique_name,
time=this_time,
value=rate,
backlog_minutes=trend_range_min,
)
trend = rate_avg * trend_range_min * 60.0
levels_upper_trend = _validate_levels(params.get('trend_levels'))
levels_lower_trend = _validate_levels(params.get('trend_levels_lower'))
if levels_lower_trend is not None:
# GUI representation of this parameter is labelled 'temperature decrease'; the user may input this
# as a positive or negative value
levels_lower_trend = (abs(levels_lower_trend[0]) * -1,
abs(levels_lower_trend[1]) * -1)
yield from check_levels(
value=trend,
levels_upper=levels_upper_trend,
levels_lower=levels_lower_trend,
label='Temperature trend',
render_func=lambda trend: render_temp(
trend,
output_unit,
relative=True,
sign=True,
) + temp_unitsym[output_unit] + ' per ' + str(trend_range_min) +
' min',
)
if "trend_timeleft" not in params:
return
limit = crit_temp if trend > 0 else crit_temp_lower
if limit is None:
# crit levels may not be set
return
# compute time until temperature limit is reached
warn_timeleft_min, crit_timeleft_min = params["trend_timeleft"]
if warn_timeleft_min is None or crit_timeleft_min is None:
levels_timeleft_sec = None
else:
levels_timeleft_sec = (warn_timeleft_min * 60.0,
crit_timeleft_min * 60.0)
diff_to_limit = limit - temp
seconds_left = float(diff_to_limit / rate_avg)
yield from check_levels(
value=seconds_left,
levels_lower=levels_timeleft_sec,
render_func=timespan,
label='Time until temperature limit reached',
)