def test_moleculesperm3(self):
"""
Test the creation of a flux quantity with units of molecules/(m^2*s).
"""
q = quantity.Flux(1.0, "molecules/(m^2*s)")
self.assertAlmostEqual(q.value, 1.0, 6)
self.assertAlmostEqual(q.value_si * constants.Na, 1.0, delta=1e-6)
self.assertEqual(q.units, "molecules/(m^2*s)")
def test_perm2pers(self):
"""
Test the creation of a flux quantity with units of m^-2*s^-1.
"""
try:
q = quantity.Flux(1.0, "m^-2*s^-1")
self.fail('Allowed invalid unit type "m^-2*s^-1".')
except quantity.QuantityError:
pass
