class TestSingleExponentialDown(unittest.TestCase):
"""
Contains unit tests of the SingleExponentialDown class.
"""
def setUp(self):
self.alpha0 = 0.5
self.T0 = 300.
self.n = 0.85
self.singleExponentialDown = SingleExponentialDown(
alpha0=(self.alpha0, "kJ/mol"),
T0=(self.T0, "K"),
n=self.n,
)
def test_alpha0(self):
"""
Test the SingleExponentialDown.sigma attribute.
"""
self.assertAlmostEqual(
self.singleExponentialDown.alpha0.value_si * 0.001, self.alpha0, 4)
def test_temperature_0(self):
"""
Test the SingleExponentialDown.T0 attribute.
"""
self.assertAlmostEqual(self.singleExponentialDown.T0.value_si, self.T0,
4)
def test_n(self):
"""
Test the SingleExponentialDown.n attribute.
"""
self.assertAlmostEqual(self.singleExponentialDown.n, self.n, 4)
def test_get_alpha(self):
"""
Test the SingleExponentialDown.get_alpha() method.
"""
for T in [300, 400, 500, 600, 800, 1000, 1500, 2000]:
dEdown0 = 1000. * self.alpha0 * (T / self.T0)**self.n
dEdown = self.singleExponentialDown.get_alpha(T)
self.assertAlmostEqual(dEdown0, dEdown, 6)
def test_pickle(self):
"""
Test that a SingleExponentialDown object can be successfully pickled
and unpickled with no loss of information.
"""
import pickle
singleExponentialDown = pickle.loads(
pickle.dumps(self.singleExponentialDown, -1))
self.assertAlmostEqual(self.singleExponentialDown.alpha0.value,
singleExponentialDown.alpha0.value, 6)
self.assertEqual(self.singleExponentialDown.alpha0.units,
singleExponentialDown.alpha0.units)
self.assertAlmostEqual(self.singleExponentialDown.T0.value,
singleExponentialDown.T0.value, 6)
self.assertEqual(self.singleExponentialDown.T0.units,
singleExponentialDown.T0.units)
self.assertAlmostEqual(self.singleExponentialDown.n,
singleExponentialDown.n, 4)
def test_repr(self):
"""
Test that a SingleExponentialDown object can be successfully
reconstructed from its repr() with no loss of information.
"""
namespace = {}
exec(
'singleExponentialDown = {0!r}'.format(self.singleExponentialDown),
globals(), namespace)
self.assertIn('singleExponentialDown', namespace)
singleExponentialDown = namespace['singleExponentialDown']
self.assertAlmostEqual(self.singleExponentialDown.alpha0.value,
singleExponentialDown.alpha0.value, 6)
self.assertEqual(self.singleExponentialDown.alpha0.units,
singleExponentialDown.alpha0.units)
self.assertAlmostEqual(self.singleExponentialDown.T0.value,
singleExponentialDown.T0.value, 6)
self.assertEqual(self.singleExponentialDown.T0.units,
singleExponentialDown.T0.units)
self.assertAlmostEqual(self.singleExponentialDown.n,
singleExponentialDown.n, 4)
