calculator

calculator.py

# -*- coding: utf-8 -*-
import unittest
class Calculadora(object):
	def __init__(self, x=None, y=None):
		self.x = x
		self.y = y
	def suma(self):
		return self.x + self.y
	def resta(self):
		return self.x - self.y
	def multiplicacion(self):
		return self.x * self.y
	def division(self):
		try:
			return self.x / self.y
		except ZeroDivisionError:
			return None
	def sumatoria(self, lista):
		sumatoria = 0
		for i in lista:
			sumatoria += i
		return sumatoria

class CalculadoraTest(unittest.TestCase):
	def test_suma(self):
		calculadora = Calculadora(3,2)
		self.assertEquals(5, calculadora.suma() )
	def test_resta(self):
		calculadora = Calculadora(5,2)
		self.assertEquals(3, calculadora.resta() )
	def test_division(self):
		calculadora = Calculadora(5,0)
		self.assertEquals(None, calculadora.division() )
	def test_sumatoria(self):
		calculadora = Calculadora()
		resultado = calculadora.sumatoria([1,2,3,4,5,6,7,8,10])
		self.assertEquals(46, resultado )

if __name__ == '__main__':
    unittest.main()