def test_accumulated_precipitation_to_metric():
"""Test accumulated_precipitation conversion to metric system."""
assert (METRIC_SYSTEM.accumulated_precipitation(
25, METRIC_SYSTEM.accumulated_precipitation_unit) == 25)
assert METRIC_SYSTEM.accumulated_precipitation(
10, IMPERIAL_SYSTEM.accumulated_precipitation_unit) == pytest.approx(
254, abs=1e-4)
def test_invalid_value():
"""Test no conversion happens if value is non-numeric."""
with pytest.raises(TypeError):
METRIC_SYSTEM.length("25a", LENGTH_KILOMETERS)
with pytest.raises(TypeError):
METRIC_SYSTEM.temperature("50K", TEMP_CELSIUS)
with pytest.raises(TypeError):
METRIC_SYSTEM.wind_speed("50km/h", SPEED_METERS_PER_SECOND)
with pytest.raises(TypeError):
METRIC_SYSTEM.volume("50L", VOLUME_LITERS)
with pytest.raises(TypeError):
METRIC_SYSTEM.pressure("50Pa", PRESSURE_PA)
with pytest.raises(TypeError):
METRIC_SYSTEM.accumulated_precipitation("50mm", LENGTH_MILLIMETERS)
def test_accumulated_precipitation_unknown_unit():
"""Test no conversion happens if unknown unit."""
with pytest.raises(ValueError):
METRIC_SYSTEM.accumulated_precipitation(5, "K")
def test_accumulated_precipitation_same_unit():
"""Test no conversion happens if to unit is same as from unit."""
assert (METRIC_SYSTEM.accumulated_precipitation(
5, METRIC_SYSTEM.accumulated_precipitation_unit) == 5)
