assertEquals($left, $node->getNode('left')); $this->assertEquals($right, $node->getNode('right')); } public function getTests() { $left = new ConstantExpression(1, 1); $right = new ConstantExpression(2, 1); $node = new MulBinary($left, $right, 1); return [ [$node, '(1 * 2)'], ]; } }