def test_string_formatting(self):
p = Pressure(dbar=100)
s = "{:.1f %u}".format(p)
self.assertEqual(s, "100.0 dbar")
s = repr(p)
self.assertEqual(s, "Pressure(dbar=100.0)")
p.unit = "m_seawater"
self.assertRaises(ApproximatedDepthError, "{:.1f %u}".format, p)
p = Pressure(dbar=4)
p.unit = "m_seawater"
self.assertRaises(ApproximatedDepthError, "{:.3f %u}".format, p)
self.assertEqual("4.0 m", "{:.1f %u}".format(p))
self.assertEqual("4.0 m", "{}".format(p))
def test_kpa_to_dbar(self):
kpa = Pressure(kPa=100000)
expected_dbar = 10000
self.assertEqual(kpa.dbar, expected_dbar)
def test_meters_of_seawater(self):
dbars = [5e2, 1e3, 2e3, 3e3, 4e3, 5e3, 6e3, 7e3, 8e3, 9e3, 10e3]
lats = [0, 30, 45, 60, 90]
expected = [
496.65,
496.00,
495.34,
494.69,
494.03,
992.12,
990.81,
989.50,
988.19,
986.88,
1979.55,
1976.94,
1974.33,
1971.72,
1969.11,
2962.43,
2958.52,
2954.61,
2950.71,
2946.81,
3940.88,
3935.68,
3930.49,
3925.30,
3920.10,
4915.04,
4908.56,
4902.08,
4895.60,
4889.13,
5885.03,
5877.27,
5869.51,
5861.76,
5854.01,
6850.95,
6841.92,
6832.89,
6823.86,
6814.84,
7812.93,
7802.63,
7792.33,
7782.04,
7771.76,
8771.07,
8759.51,
8747.95,
8736.40,
8724.85,
9725.47,
9712.65,
9699.84,
9687.03,
9674.23,
]
for inputs, output in zip(iproduct(dbars, lats), expected):
kw = dict(dbar=inputs[0], latitude=inputs[1])
p = Pressure(**kw)
kw['expected_output'] = output
with self.subTest(**kw):
self.assertAlmostEqual(p.m_seawater, output, 2)
self.assertRaises(NotImplementedError, meters_of_seawater_to_dbar, 1,
0)
self.assertRaises(AttributeError, Pressure, **dict(m_seawater=100))
def test_conversion_to_non_si(self):
dbar = Pressure(dbar=10000)
expected_psi = 14503.7737796859
self.assertAlmostEqual(dbar.psi, expected_psi, 3)
def test_conversion_to_mbar(self):
hpa = Pressure(hPa=1000.5)
expected_mbar = 1000.5
self.assertAlmostEqual(hpa.mbar, expected_mbar)
def test_bar_to_pa(self):
bar = Pressure(bar=1000)
expected_pa = 100000000
self.assertAlmostEqual(bar.Pa, expected_pa)
def test_dbar_to_kpa(self):
dbar = Pressure(dbar=10000)
expected_kpa = 100000
self.assertEqual(dbar.kPa, expected_kpa)
def test_sanity(self):
bar = Pressure(bar=2)
atm = Pressure(atm=Decimal('1.973846533432'))
self.assertAlmostEqual(bar.Pa, atm.Pa)
def test_ensure_that_we_always_output_decimal(self):
bar = Pressure(bar=2)
atm = bar.atm
self.assertTrue(isinstance(atm, Decimal))
def test_conversion_to_non_si(self):
bar = Pressure(bar=2)
expected_torr = Decimal('1500.1275108384')
self.assertAlmostEqual(bar.torr, expected_torr)