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import unittest
from tests.context import dew_point, Temp
dew_point_table = {
(-20, 76): -23,
(-20, 52): -27,
(-20, 20): -37,
(-20, 9): -45,
(-4, 90): -5,
(-4, 52): -12,
(-4, 32): -18,
(-4, 11): -30,
(0, 92): -1,
(0, 60): -7,
(0, 28): -16,
(8, 93): 7,
(8, 56): 0,
(8, 26): -10,
(19, 82): 16,
(19, 39): 5,
(19, 14): -9,
(32, 90): 30,
(32, 66): 25,
(32, 35): 15,
(32, 9): -5,
(46, 89): 44,
(46, 52): 34,
(46, 22): 19,
}
class DewPointTest(unittest.TestCase):
def test_dew_point_for_100_humidity(self):
for t in range(-40, 60, 5):
self.assertEqual(round(dew_point(t, 100)), t)
def test_return_type(self):
self.assertIsInstance(dew_point(-20, 40), Temp)
def test_dew_point_by_table(self):
for t_rh, dp in dew_point_table.items():
t, rh = t_rh
self.assertEqual(round(dew_point(t, rh)), dp)
def test_invalid_range(self):
self.assertRaises(ValueError, dew_point, -20, 0)
self.assertRaises(ValueError, dew_point, -20, 100.1)
if __name__ == '__main__':
unittest.main()
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