--- /dev/null
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+abstract class Twig_Test_NodeTestCase extends PHPUnit_Framework_TestCase
+{
+ abstract public function getTests();
+
+ /**
+ * @dataProvider getTests
+ */
+ public function testCompile($node, $source, $environment = null, $isPattern = false)
+ {
+ $this->assertNodeCompilation($source, $node, $environment, $isPattern);
+ }
+
+ public function assertNodeCompilation($source, Twig_Node $node, Twig_Environment $environment = null, $isPattern = false)
+ {
+ $compiler = $this->getCompiler($environment);
+ $compiler->compile($node);
+
+ if ($isPattern) {
+ $this->assertStringMatchesFormat($source, trim($compiler->getSource()));
+ } else {
+ $this->assertEquals($source, trim($compiler->getSource()));
+ }
+ }
+
+ protected function getCompiler(Twig_Environment $environment = null)
+ {
+ return new Twig_Compiler(null === $environment ? $this->getEnvironment() : $environment);
+ }
+
+ protected function getEnvironment()
+ {
+ return new Twig_Environment(new Twig_Loader_Array(array()));
+ }
+
+ protected function getVariableGetter($name, $line = false)
+ {
+ $line = $line > 0 ? "// line {$line}\n" : '';
+
+ if (PHP_VERSION_ID >= 70000) {
+ return sprintf('%s($context["%s"] ?? null)', $line, $name, $name);
+ }
+
+ if (PHP_VERSION_ID >= 50400) {
+ return sprintf('%s(isset($context["%s"]) ? $context["%s"] : null)', $line, $name, $name);
+ }
+
+ return sprintf('%s$this->getContext($context, "%s")', $line, $name);
+ }
+
+ protected function getAttributeGetter()
+ {
+ if (function_exists('twig_template_get_attributes')) {
+ return 'twig_template_get_attributes($this, ';
+ }
+
+ return '$this->getAttribute(';
+ }
+}