Overrides Twig_Test_NodeTestCase::getTests
public function getTests() {
$left = new Twig_Node_Expression_Constant(1, 1);
$right = new Twig_Node_Expression_Constant(2, 1);
$node = new Twig_Node_Expression_Binary_Sub($left, $right, 1);
return array(
array(
$node,
'(1 - 2)',
),
);
}