def test_should_sum_negative_numbers(self):
self.assertEqual(calculate('-2+-2'), '-4')
def test_should_raise_syntaxerror_for_parentheses_not_matching(self):
with self.assertRaises(SyntaxError):
calculate('(2+2))')
def test_should_sum_positive_numbers(self):
self.assertEqual(calculate('2+2'), '4')
def test_should_raise_syntaxerror_if_not_an_equation(self):
with self.assertRaises(SyntaxError):
calculate('print')
def test_should_raise_syntaxerror_for_empty_parentheses(self):
with self.assertRaises(SyntaxError):
calculate('()()')
def test_should_raise_overflowerror_in_exponentiation_too_high(self):
with self.assertRaises(OverflowError):
calculate('9^9^9^9')
def test_should_calculate_complex_equation(self):
self.assertEqual(
calculate('((2+(2*(2-((5/5)+32))))/2)+1+(1*(2^(2+(5.5-5.1))))'),
'-23.72196835690842')
def test_should_sum_negative_and_positive_numbers(self):
self.assertEqual(calculate('-2+2'), '0')