def test_evaluate_function_name_substring(self):
from arithmetic import evaluate
res = evaluate('f', variables={'af':'1'}, functions={'f': 'af'})
self.assertEqual( res, '1' )
def test_evaluate_function_recursive_no_initial_value(self):
from arithmetic import evaluate
res = evaluate('f', functions={'f': 'f+1'})
self.assertEqual( res, '0' )
def test_evaluate_variable_plus(self):
from arithmetic import evaluate
res = evaluate('f+1', variables={'f':'1'})
self.assertEqual( res, '2' )
def test_evaluate_function(self):
from arithmetic import evaluate
res = evaluate('f', variables={'a':'1'}, functions={'f': 'a+1'})
self.assertEqual( res, '2' )
def test_evaluate_numeric(self):
from arithmetic import evaluate
res = evaluate('5+2')
self.assertEqual( res, '7' )
def test_evaluate_variable(self):
from arithmetic import evaluate
res = evaluate('a', variables={'a':'1'})
self.assertEqual( res, '1' )
def test_evaluate_factors(self):
from arithmetic import evaluate
res = evaluate('5**2')
self.assertEqual( res, '25' )
def test_evaluate_factor_multiple_word_identifier(self):
from arithmetic import evaluate
res = evaluate('avg val', variables={'avg val':'5'})
self.assertEqual( res, '5' )
def test_evaluate_factor_open_parenthesis(self):
from arithmetic import evaluate
res = evaluate('(1)')
self.assertEqual( res, '1' )
def test_evaluate_factor_percentage(self):
from arithmetic import evaluate
res = evaluate('50%')
self.assertEqual( res, '0.5' )
def test_evaluate_negative_factor(self):
from arithmetic import evaluate
res = evaluate('5*-2')
self.assertEqual( res, '-10' )
