def test_complex_expr():
expr = "not food or (leaves and animals)"
assert parse_selection(expr) == ({'food'}, ['leaves', 'animals'])
def test_possible_characters(char):
sel = parse_selection("food and a{}".format(char))
assert isinstance(sel, list)
def test_not(terms):
expr = 'not ({})'.format(' and '.join(terms))
assert parse_selection(expr) == [{el} for el in terms]
def test_or(terms):
expr = ' or '.join(terms)
assert parse_selection(expr) == terms
def test_and(terms):
expr = ' and '.join(terms)
assert parse_selection(expr) == terms
def test_type_operation(expr, typename):
sel = parse_selection(expr)
assert isinstance(sel, typename)
def test_names(expr):
assert parse_selection(expr) == expr