def computing(self):
first_poly = Polynomial.from_string(self.first_poly)
second_poly = Polynomial.from_string(self.second_poly)
if first_poly and second_poly:
if self.operation == '+':
self.result = str(first_poly + second_poly)
elif self.operation == '-':
self.result = str(first_poly - second_poly)
elif self.operation == '*':
self.result = str(first_poly * second_poly)
else:
self.result = 'Coeff has no type int'
def test_error_val(self):
self.assertEqual(False, Polynomial.from_string('1,2,a'))
def test_from_string(self):
self.assertEqual(Polynomial([1, 2, 3]),
Polynomial.from_string('1,2,3'))