def test_expression_parse_implicit_mixed_2(self):
e = Expression('b1 or b2 and b3 or b4')
self.assertEqual(
e,
Expression(
Or(Variable('b1'), And(Variable('b2'), Variable('b3')),
Variable('b4'))))
def test_expression_parse_multiple_parenthesis_or(self):
e = Expression('b1 or (b2 or b3) or b4')
self.assertEqual(
e,
Expression(
Or(Variable('b1'), Variable('b2'), Variable('b3'),
Variable('b4'))))
def test_expression_parse_parentheses_mixed_1(self):
e = Expression('(b1 and b2) or (b3 and b4)')
self.assertEqual(
e,
Expression(
Or(And(Variable('b1'), Variable('b2')),
And(Variable('b3'), Variable('b4')))))
def test_expression_parse_with_square_mixed_groups(self):
e = Expression('[(a or b) or (c or d)] or [e or (f and g and h)]')
self.assertEqual(
e,
Expression(
Or(Variable('a'), Variable('b'), Variable('c'), Variable('d'),
Variable('e'),
And(Variable('f'), Variable('g'), Variable('h')))))
def test_expression_iter_variables(self):
e = Expression(
Or(And(Variable('b1'), Variable('b2')),
And(Variable('b3'), Variable('b4'))))
self.assertEqual(
list(e.variables),
[Variable('b1'),
Variable('b2'),
Variable('b3'),
Variable('b4')])
def test_expression_parse_name_starting_with_and(self):
e = Expression('b1 or anderson')
self.assertEqual(e, Expression(Or(Variable('b1'),
Variable('anderson'))))
def test_expression_parse_uppercase_operators(self):
e = Expression('(b1 AND b2) OR b3')
self.assertEqual(
e,
Expression(Or(Variable('b3'), And(Variable('b1'),
Variable('b2')))))
def test_expression_parse_or(self):
e = Expression('b1 or b2')
self.assertEqual(e, Expression(Or(Variable('b1'), Variable('b2'))))
def test_expression_root(self):
e = Expression(Or(Variable('b1'), Variable('b2')))
root = e.root
self.assertIsInstance(e.root, Or)
def test_length_of_or(self):
term = Or(Variable('b1'), And(Variable('b2'), Variable('b3')))
self.assertEqual(len(term), 2)