def can_infer_type_of_negation_operation():
type_bindings = {"x": types.int_type}
negation = nodes.neg(nodes.ref("x"))
assert_equal(types.int_type, infer(negation, type_bindings=type_bindings))
def test_parse_negation():
expected = nodes.neg(nodes.ref("x"))
_assert_expression_parse(expected, "-x")
def unary_operation_has_child_names_resolved():
_assert_children_resolved(
lambda ref: nodes.neg(ref),
)
def test_transform_unary_operation_is_converted_to_call_on_class(self):
_assert_transform(
nodes.neg(nodes.ref("x")),
cc.call(cc.attr(cc.ref("x"), "__neg__"), [])
)
