67 lines
2.5 KiB
Python
67 lines
2.5 KiB
Python
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"""Test homeassistant pressure utility functions."""
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import unittest
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import pytest
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from homeassistant.const import (PRESSURE_PA, PRESSURE_HPA, PRESSURE_MBAR,
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PRESSURE_INHG, PRESSURE_PSI)
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import homeassistant.util.pressure as pressure_util
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INVALID_SYMBOL = 'bob'
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VALID_SYMBOL = PRESSURE_PA
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class TestPressureUtil(unittest.TestCase):
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"""Test the pressure utility functions."""
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def test_convert_same_unit(self):
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"""Test conversion from any unit to same unit."""
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assert pressure_util.convert(2, PRESSURE_PA, PRESSURE_PA) == 2
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assert pressure_util.convert(3, PRESSURE_HPA, PRESSURE_HPA) == 3
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assert pressure_util.convert(4, PRESSURE_MBAR, PRESSURE_MBAR) == 4
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assert pressure_util.convert(5, PRESSURE_INHG, PRESSURE_INHG) == 5
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def test_convert_invalid_unit(self):
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"""Test exception is thrown for invalid units."""
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with pytest.raises(ValueError):
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pressure_util.convert(5, INVALID_SYMBOL, VALID_SYMBOL)
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with pytest.raises(ValueError):
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pressure_util.convert(5, VALID_SYMBOL, INVALID_SYMBOL)
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def test_convert_nonnumeric_value(self):
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"""Test exception is thrown for nonnumeric type."""
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with pytest.raises(TypeError):
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pressure_util.convert('a', PRESSURE_HPA, PRESSURE_INHG)
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def test_convert_from_hpascals(self):
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"""Test conversion from hPA to other units."""
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hpascals = 1000
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self.assertAlmostEqual(
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pressure_util.convert(hpascals, PRESSURE_HPA, PRESSURE_PSI),
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14.5037743897)
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self.assertAlmostEqual(
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pressure_util.convert(hpascals, PRESSURE_HPA, PRESSURE_INHG),
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29.5299801647)
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self.assertAlmostEqual(
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pressure_util.convert(hpascals, PRESSURE_HPA, PRESSURE_PA),
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100000)
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self.assertAlmostEqual(
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pressure_util.convert(hpascals, PRESSURE_HPA, PRESSURE_MBAR),
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1000)
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def test_convert_from_inhg(self):
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"""Test conversion from inHg to other units."""
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inhg = 30
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self.assertAlmostEqual(
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pressure_util.convert(inhg, PRESSURE_INHG, PRESSURE_PSI),
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14.7346266155)
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self.assertAlmostEqual(
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pressure_util.convert(inhg, PRESSURE_INHG, PRESSURE_HPA),
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1015.9167)
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self.assertAlmostEqual(
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pressure_util.convert(inhg, PRESSURE_INHG, PRESSURE_PA),
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101591.67)
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self.assertAlmostEqual(
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pressure_util.convert(inhg, PRESSURE_INHG, PRESSURE_MBAR),
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1015.9167)
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