def main(): if len(sys.argv) != 4: error_message = """ Invalid arguments. Usage: calculator.py 1 + 3 or 1 x 3 or 1 / 3 or 1 - 3 """ raise ValueError(error_message + "\n") x = sys.argv[1] operator = sys.argv[2] y = sys.argv[3] if operator == "+": return functions.add(x, y) elif operator == "-": return functions.subtract(x, y) elif operator == "x": return functions.multiply(x, y) elif operator == "/": return functions.divide(x, y) else: return "invalid input"
def test_divide(self): self.assertTrue(isclose(calc.divide(self.x, self.y), 0.6666666666))
if len(sys.argv) != 4: error_message = """ Invalid arguments. Usage: calculator.py 1 + 3 """ sys.stderr.write(error_message + "\n") sys.exit(-1) x = sys.argv[1] operator = sys.argv[2] y = sys.argv[3] if operator == "+": print functions.add(x, y) elif operator == "-": print functions.subtract(x, y) elif operator == "*": print functions.multiply(x, y) elif operator == "/": print functions.divide(x, y) else: print "invalid input"
def test_calculator_divide_function_returns_correct_result(self): self.assertEqual(calculator_functions.divide(10, 5), 2) #self.assertRaises(ValueError,calculator_functions.divide,10,0) with self.assertRaises(ValueError): #--> calculator_functions.divide(10, 0)
def test_divide(self): self.assertAlmostEqual(calc.divide(self.x, self.y), .6666, places=3)
def test_divide(self): self.assertAlmostEqual(calc.divide(self.x, self.y), .6666, places=3 )
if len(sys.argv) != 4: error_message = """ Invalid arguments. Usage: calculator.py 1 + 3 """ sys.stderr.write(error_message + "\n") sys.exit(-1) x = sys.argv[1] operator = sys.argv[2] y = sys.argv[3] if operator == "+": print(functions.add(x, y)) elif operator == "-": print(functions.subtract(x, y)) elif operator == "*": print(functions.multiply(x, y)) elif operator == "/": print(functions.divide(x, y)) else: print("invalid input")
def test_divide(self): self.assertEqual(calc.divide(self.y, self.x), 1.5)
def test_divide_by_zero_returns_value_error(self): with self.assertRaises(ZeroDivisionError): calculator_functions.divide(3, 0)
def test_division(self): self.assertEqual(calculator_functions.divide(6, 2), 3)