def test_power2(self):
self.assertEqual(solve('pow(2,3)'), 8)
self.assertEqual(solve('-pow(2,3)'), -8)
self.assertEqual(solve('pow(2,3)*2'), 16)
self.assertEqual(solve('pow( 2 , 3)'), 8)
self.assertEqual(solve('(pow(2,3))'), 8)
self.assertEqual(solve('80 / pow(2,3)'), 10)
self.assertEqual(solve('pow((2),(3))'),
8) # need to make it parse all parameters
self.assertEqual(solve('pow(pow(2,2),pow(2,2))'), 256)
self.assertEqual(solve('pow(pow(2,2),pow(2,2))+pow(2,2)'), 260)
def test_unbalanced_parn(self):
with self.assertRaises(SyntaxError):
solve('2 + (5 * 2')
with self.assertRaises(SyntaxError):
solve('(((((4))))')
with self.assertRaises(SyntaxError):
solve('((2)) * ((3')
with self.assertRaises(SyntaxError):
solve('((9)) * ((1)')
def test_bad_token(self):
with self.assertRaises(SyntaxError):
solve(' 6 + c')
with self.assertRaises(SyntaxError):
solve(' 7 & 2')
with self.assertRaises(SyntaxError):
solve(' %')
def test_bad_function(self):
with self.assertRaises(SyntaxError):
solve('pow')
with self.assertRaises(SyntaxError):
solve('pow(')
with self.assertRaises(SyntaxError):
solve('pow()')
def test_syntax_error(self):
with self.assertRaises(SyntaxError):
solve(' 5 + + 6')
with self.assertRaises(SyntaxError):
solve('5 +(2')
def test_division_float(self):
self.assertEqual(solve('10/4'), 2.5)
self.assertAlmostEqual(solve('5/3'), 1.66, delta=0.01)
self.assertAlmostEqual(solve('3 + 8/5 -1 -2*5'), -6.4, delta=0.01)
def test_power(self):
self.assertEqual(solve('2^3'), 8)
self.assertEqual(solve('(2)^(3)'), 8)
self.assertEqual(solve('2^(1+2)+3'), 11)
def test_needless_parn3(self):
self.assertEqual(solve('(((((5)))))'), 5)
self.assertEqual(solve('(( ((2)) + 4))*((5))'), 30)
def test_needless_parn(self):
self.assertEqual(solve('(2)'), 2)
def test_white_space(self):
self.assertEqual(solve(' 12 - 8 '), 4)
self.assertEqual(solve('142 -9 '), 133)
self.assertEqual(solve('72+ 15'), 87)
self.assertEqual(solve(' 12* 4'), 48)
self.assertEqual(solve(' 50/10'), 5)
def test_empty_error(self):
with self.assertRaises(SyntaxError):
solve('')
def test_solitary_number(self):
self.assertEqual(solve('89'), 89)
def test_sqrt(self):
self.assertEqual(solve('sqrt(4)'), 2)
self.assertEqual(solve('sqrt(144)'), 12)
def test_div_zero(self):
with self.assertRaises(ZeroDivisionError):
solve('5/0')
with self.assertRaises(ZeroDivisionError):
solve('(5*7/5) + (23) - 5 * (98-4)/(6*7-42)'
) #should be x/0 div by zero error)
def test_floats(self):
self.assertEqual(solve('2.5'), 2.5)
self.assertEqual(solve('4*2.5 + 8.5+1.5 /3.0'), 19)
self.assertAlmostEqual(solve('5.005 + 0.0095'), 5.01, delta=0.01)
def test_basic_add(self):
self.assertEqual(solve('2+3'), 5)
def test_tight_expressions(self):
self.assertEqual(solve('67+2'), 69)
self.assertEqual(solve(' 2-7'), -5)
self.assertEqual(solve('5*7 '), 35)
self.assertEqual(solve('8/4'), 2)
def test_needless_parn2(self):
self.assertEqual(solve('(5 + 2*3 - 1 + 7 * 8)'), 66)
self.assertEqual(solve('(67 + 2 * 3 - 67 + 2/1 - 7)'), 1)
def test_long_add_sub(self):
self.assertEqual(solve('2 -4 +6 -1 -1- 0 +8'), 10)
self.assertEqual(solve('1 -1 +2 -2 + 4 - 4 + 6'), 6)
def test_complex_structure(self):
self.assertEqual(solve('(2) + (17*2-30) * (5)+2 - (8/2)*4'), 8)
def test_long_mixed(self):
self.assertEqual(solve(' 2*3 - 4*5 + 6/3 '), -12)
self.assertEqual(solve('2*3*4/8 - 5/2*4 + 6 + 0/3'), -1)
def test_mod(self):
self.assertEqual(solve('12%2'), 0)
self.assertEqual(solve('16%12'), 4)
self.assertEqual(solve('127%59'), 9)
def test_basic_multiply(self):
self.assertEqual(solve('2*3'), 6)
