--- /dev/null
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\ExpressionLanguage\Tests\Node;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\ExpressionLanguage\Node\Node;
+use Symfony\Component\ExpressionLanguage\Node\ConstantNode;
+
+class NodeTest extends TestCase
+{
+ public function testToString()
+ {
+ $node = new Node(array(new ConstantNode('foo')));
+
+ $this->assertEquals(<<<'EOF'
+Node(
+ ConstantNode(value: 'foo')
+)
+EOF
+ , (string) $node);
+ }
+
+ public function testSerialization()
+ {
+ $node = new Node(array('foo' => 'bar'), array('bar' => 'foo'));
+
+ $serializedNode = serialize($node);
+ $unserializedNode = unserialize($serializedNode);
+
+ $this->assertEquals($node, $unserializedNode);
+ }
+}