def __init__(self, **kwargs):
fuels84 = [("CH4", 0.958), ("C2H4", 0.008), ("CO", 0.004),
("O2", 0.002), ("CO2", 0.006), ("N2", 0.022)]
fuels79 = Composition(("C", 0.5921), ("H", 0.0377), ("S", 0.0211),
("O", 0.112), ("N", 0.0128))
fuels75 = Composition(("C", 0.7), ("H", 0.043), ("O", 0.075),
("N", 0.013))
fuel = kwargs.pop("fuel", fuels84)
# fuel = fuels84
measured_co2 = kwargs.pop("measured_co2", 0)
measured_o2 = kwargs.pop("measured_o2", 0)
super().__init__(**kwargs)
if fuel:
try:
fuel = Composition(*fuel)
except ValueError:
show_popup(
"Error",
'Please ensure that the sum of proportions is 100%')
try:
self.osw_calculations = OstwaldCalculations(
fuel, measured_co2, measured_o2)
self.ostwald_triangle_graph = OstwaldTriangle(
self.osw_calculations)
self.ostwald_triangle_graph.draw(self.canvas)
except (molmass.molmass.FormulaError, ZeroDivisionError) as e:
if isinstance(e, molmass.molmass.FormulaError):
show_popup(
"Error", 'Please ensure that all chemicals are in'
'\n capital letters and are chemically valid.')
else:
show_popup("Error",
'Please ensure that all proportions are numbers.')
def test_non_existing_element_returns0(self):
args = [
CompositionNode(FormulaWrapper("C"), 0.7),
CompositionNode(FormulaWrapper("H"), 0.043)
]
fuel = Composition(*args)
self.assertEqual(0, fuel["O"])
def test_init_args_as_list(self):
args = [
CompositionNode(FormulaWrapper("C"), 0.7),
CompositionNode(FormulaWrapper("H"), 0.043)
]
fuel = Composition(*args)
self.assertEqual(0.7, fuel["C"])
def test_complex_formula_in_init(self):
args = [
CompositionNode(FormulaWrapper("C2H4"), 0.7),
CompositionNode(FormulaWrapper("H"), 0.043)
]
fuel = Composition(*args)
with self.assertRaises(KeyError):
c = fuel["C2H4"]
def test_vocoh2o_84(self):
f = Composition(("CH4", 0.958), ("C2H4", 0.008), ("CO", 0.004), ("O2", 0.002), ("CO2", 0.006), ("N2", 0.022))
m = Mollier(f)
self.assertAlmostEqual(1.451, m.Ocoh2o, delta=0.01) # the book says 8.843 but it should be 0.842
def test_is_gas_true_when_c3h8_present(self):
fuel = Composition(
("S", 0.11),
("C3H8", 0.11)
)
self.assertEqual(True, fuel.is_gas)
def test_init_args(self):
fuel = Composition(
CompositionNode(FormulaWrapper("C"), 0.7),
CompositionNode(FormulaWrapper("H"), 0.043)
)
self.assertEqual(0.7, fuel["C"])
def test_maxco_pointc_o2(self):
f = Composition(("C", 0.7), ("H", 0.043), ("O", 0.075), ("N", 0.013))
ocal = OstwaldCalculations(f, 6, 2)
self.assertEqual(8.6, round(ocal.C.o2, 1))
def test_kmax_s75(self):
f = Composition(("C", 0.7), ("H", 0.043), ("O", 0.075), ("N", 0.013))
ocal = OstwaldCalculations(f, 6, 2)
self.assertEqual(18.83, round(ocal.kmax, 2))
def test_v0_s79(self):
f = Composition(("C", 0.5921), ("H", 0.0377), ("S", 0.0211), ("O", 0.112), ("N", 0.0128))
m = Mollier(f)
self.assertAlmostEqual(5.964, m.vo, delta=0.01)
def test_vocoh2o(self):
f = Composition(("C", 0.7), ("H", 0.043), ("O", 0.075), ("N", 0.013))
m = Mollier(f)
self.assertEqual(0.842, round(m.Ocoh2o, 3)) # the book says 8.843 but it should be 0.842
def test_ot(self):
f = Composition(("C", 0.7), ("H", 0.043), ("O", 0.075), ("N", 0.013))
m = Mollier(f)
self.assertEqual(1.496, round(m.Ot, 3))
def test_proportion_of_formula_returns_0_when_nothing_found(self):
fuel = Composition(
("S", 0.11),
("CH4", 0.10)
)
self.assertEqual(0, fuel.proportion_of_formula("not_existing_formula"))
def test_proportion_of_formula_not_matching_capitalization(self):
fuel = Composition(
("S", 0.11),
("CH4", 0.10)
)
self.assertEqual(0.10, fuel.proportion_of_formula("Ch4"))
def test_proportion_of_formula(self):
fuel = Composition(
("S", 0.11),
("CH4", 0.10)
)
self.assertEqual(0.10, fuel.proportion_of_formula("CH4"))
def test_is_gas_false_when_CH_prop_is_0(self):
fuel = Composition(
("S", 0.11),
("CH4", 0)
)
self.assertEqual(False, fuel.is_gas)
def test_is_gas_false_when_not_gas(self):
fuel = Composition(
("S", 0.11),
("C", 0.11)
)
self.assertEqual(False, fuel.is_gas)
def test_vo2_84(self):
f = Composition(("CH4", 0.958), ("C2H4", 0.008), ("CO", 0.004), ("O2", 0.002), ("CO2", 0.006), ("N2", 0.022))
m = Mollier(f)
self.assertAlmostEqual(0.489, m.vo2, delta=0.01)
def test_ot_79(self):
f = Composition(("C", 0.5921), ("H", 0.0377), ("S", 0.0211), ("O", 0.112), ("N", 0.0128))
m = Mollier(f)
self.assertAlmostEqual(1.253, m.Ot, delta=0.01)
def test_v0(self):
f = Composition(("C", 0.7), ("H", 0.043), ("O", 0.075), ("N", 0.013))
m = Mollier(f)
self.assertEqual(7.122, round(m.vo, 3))
def test_maxco_s84(self):
f = Composition(("CH4", 0.958), ("C2H4", 0.008), ("CO", 0.004), ("O2", 0.002), ("CO2", 0.006), ("N2", 0.022))
ocal = OstwaldCalculations(f, 6, 2)
self.assertEqual(15.25, round(ocal.max_co, 2))
def test_vco(self):
f = Composition(("C", 0.7), ("H", 0.043), ("O", 0.075), ("N", 0.013))
m = Mollier(f)
self.assertEqual(1.308, round(m.vco, 3))
def test_maxco_s75(self):
f = Composition(("C", 0.7), ("H", 0.043), ("O", 0.075), ("N", 0.013))
ocal = OstwaldCalculations(f, 6, 2)
self.assertEqual(29.16, round(ocal.max_co, 2))
def test_n2(self):
f = Composition(("C", 0.7), ("H", 0.043), ("O", 0.075), ("N", 0.013))
m = Mollier(f)
self.assertEqual(5.637, round(m.vn2, 3))
def test_kmax_s79(self):
f = Composition(("C", 0.5921), ("H", 0.0377), ("S", 0.0211), ("O", 0.112), ("N", 0.0128))
ocal = OstwaldCalculations(f, 6, 2)
self.assertEqual(19.17, round(ocal.kmax, 2))
def test_vo0s(self):
f = Composition(("C", 0.7), ("H", 0.043), ("O", 0.075), ("N", 0.013))
m = Mollier(f)
self.assertEqual(7.6, round(m.v0s, 1))
def test_init_with_empty_list_returns0(self):
fuel = Composition()
self.assertEqual(0, fuel["O"])
def test_ot_formula_84(self):
f = Composition(("CH4", 0.958), ("C2H4", 0.008), ("CO", 0.004), ("O2", 0.002), ("CO2", 0.006), ("N2", 0.022))
m = Mollier(f)
self.assertAlmostEqual(1.94, m.Ot, delta=0.01)
def test_vo2(self):
f = Composition(("C", 0.7), ("H", 0.043), ("O", 0.075), ("N", 0.013))
m = Mollier(f)
self.assertEqual(0.654, round(m.vo2, 3))
def test_creates_composition_nodes_from_tuples_on_init(self):
fuel = Composition(
("H", 1)
)
self.assertEqual(1, fuel["H"])