122 lines
4.1 KiB
Python
122 lines
4.1 KiB
Python
"""Test the unit system helper."""
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import unittest
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from homeassistant.util.unit_system import (
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UnitSystem,
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METRIC_SYSTEM,
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IMPERIAL_SYSTEM,
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)
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from homeassistant.const import (
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LENGTH_METERS,
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LENGTH_KILOMETERS,
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MASS_GRAMS,
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VOLUME_LITERS,
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TEMP_CELSIUS,
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LENGTH,
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MASS,
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TEMPERATURE,
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VOLUME
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)
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import pytest
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SYSTEM_NAME = 'TEST'
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INVALID_UNIT = 'INVALID'
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class TestUnitSystem(unittest.TestCase):
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"""Test the unit system helper."""
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def test_invalid_units(self):
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"""Test errors are raised when invalid units are passed in."""
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with pytest.raises(ValueError):
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UnitSystem(SYSTEM_NAME, INVALID_UNIT, LENGTH_METERS, VOLUME_LITERS,
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MASS_GRAMS)
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with pytest.raises(ValueError):
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UnitSystem(SYSTEM_NAME, TEMP_CELSIUS, INVALID_UNIT, VOLUME_LITERS,
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MASS_GRAMS)
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with pytest.raises(ValueError):
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UnitSystem(SYSTEM_NAME, TEMP_CELSIUS, LENGTH_METERS, INVALID_UNIT,
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MASS_GRAMS)
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with pytest.raises(ValueError):
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UnitSystem(SYSTEM_NAME, TEMP_CELSIUS, LENGTH_METERS, VOLUME_LITERS,
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INVALID_UNIT)
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def test_invalid_value(self):
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"""Test no conversion happens if value is non-numeric."""
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with pytest.raises(TypeError):
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METRIC_SYSTEM.length('25a', LENGTH_KILOMETERS)
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with pytest.raises(TypeError):
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METRIC_SYSTEM.temperature('50K', TEMP_CELSIUS)
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def test_as_dict(self):
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"""Test that the as_dict() method returns the expected dictionary."""
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expected = {
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LENGTH: LENGTH_KILOMETERS,
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TEMPERATURE: TEMP_CELSIUS,
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VOLUME: VOLUME_LITERS,
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MASS: MASS_GRAMS
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}
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assert expected == METRIC_SYSTEM.as_dict()
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def test_temperature_same_unit(self):
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"""Test no conversion happens if to unit is same as from unit."""
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assert 5 == \
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METRIC_SYSTEM.temperature(5,
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METRIC_SYSTEM.temperature_unit)
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def test_temperature_unknown_unit(self):
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"""Test no conversion happens if unknown unit."""
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with pytest.raises(ValueError):
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METRIC_SYSTEM.temperature(5, 'K')
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def test_temperature_to_metric(self):
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"""Test temperature conversion to metric system."""
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assert 25 == \
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METRIC_SYSTEM.temperature(25, METRIC_SYSTEM.temperature_unit)
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assert 26.7 == \
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round(METRIC_SYSTEM.temperature(
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80, IMPERIAL_SYSTEM.temperature_unit), 1)
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def test_temperature_to_imperial(self):
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"""Test temperature conversion to imperial system."""
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assert 77 == \
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IMPERIAL_SYSTEM.temperature(77, IMPERIAL_SYSTEM.temperature_unit)
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assert 77 == \
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IMPERIAL_SYSTEM.temperature(25, METRIC_SYSTEM.temperature_unit)
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def test_length_unknown_unit(self):
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"""Test length conversion with unknown from unit."""
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with pytest.raises(ValueError):
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METRIC_SYSTEM.length(5, 'fr')
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def test_length_to_metric(self):
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"""Test length conversion to metric system."""
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assert 100 == \
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METRIC_SYSTEM.length(100, METRIC_SYSTEM.length_unit)
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assert 8.04672 == \
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METRIC_SYSTEM.length(5, IMPERIAL_SYSTEM.length_unit)
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def test_length_to_imperial(self):
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"""Test length conversion to imperial system."""
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assert 100 == \
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IMPERIAL_SYSTEM.length(100,
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IMPERIAL_SYSTEM.length_unit)
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assert 3.106855 == \
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IMPERIAL_SYSTEM.length(5, METRIC_SYSTEM.length_unit)
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def test_properties(self):
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"""Test the unit properties are returned as expected."""
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assert LENGTH_KILOMETERS == METRIC_SYSTEM.length_unit
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assert TEMP_CELSIUS == METRIC_SYSTEM.temperature_unit
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assert MASS_GRAMS == METRIC_SYSTEM.mass_unit
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assert VOLUME_LITERS == METRIC_SYSTEM.volume_unit
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def test_is_metric(self):
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"""Test the is metric flag."""
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assert METRIC_SYSTEM.is_metric
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assert not IMPERIAL_SYSTEM.is_metric
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