Implemented test suite for widget rendering

Test/Form/Widget/AbstractWidgetTestCase.php

@@ -0,0 +1,126 @@
+<?php
+
+/*
+ * This file is part of the Sonata Project package.
+ *
+ * (c) Thomas Rabaix <thomas.rabaix@sonata-project.org>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Sonata\CoreBundle\Test\Form\Widget;
+
+use Symfony\Bridge\Twig\Extension\FormExtension;
+use Symfony\Bridge\Twig\Extension\TranslationExtension;
+use Symfony\Bridge\Twig\Form\TwigRenderer;
+use Symfony\Bridge\Twig\Form\TwigRendererEngine;
+use Symfony\Bridge\Twig\Tests\Extension\Fixtures\StubFilesystemLoader;
+use Symfony\Bundle\FrameworkBundle\Tests\Templating\Helper\Fixtures\StubTranslator;
+use Symfony\Component\Form\FormExtensionInterface;
+use Symfony\Component\Form\FormView;
+use Symfony\Component\Form\Test\TypeTestCase;
+
+/**
+ * @author Christian Gripp <mail@core23.de>
+ */
+abstract class AbstractWidgetTestCase extends TypeTestCase
+{
+    /**
+     * @var FormExtensionInterface
+     */
+    private $extension;
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function setUp()
+    {
+        parent::setUp();
+
+        $rendererEngine = new TwigRendererEngine(array(
+            'formatter.html.twig',
+            'form_div_layout.html.twig',
+        ));
+
+        if (class_exists('Symfony\Component\Security\Csrf\CsrfTokenManagerInterface')) {
+            $csrfManagerClass = 'Symfony\Component\Security\Csrf\CsrfTokenManagerInterface';
+        } else {
+            $csrfManagerClass = 'Symfony\Component\Form\Extension\Csrf\CsrfProvider\CsrfProviderInterface';
+        }
+
+        $renderer = new TwigRenderer($rendererEngine, $this->getMock($csrfManagerClass));
+
+        $this->extension = new FormExtension($renderer);
+
+        /*
+         * this is an ugly workaround for different build strategies and, possibly, different TwigBridge installation directories
+         */
+        $twigPaths = array_filter(array(
+            __DIR__.'/../../../vendor/symfony/twig-bridge/Symfony/Bridge/Twig/Resources/views/Form',
+            __DIR__.'/../../../vendor/symfony/twig-bridge/Resources/views/Form',
+            __DIR__.'/../../../vendor/symfony/symfony/src/Symfony/Bridge/Twig/Resources/views/Form',
+            __DIR__.'/../../../../../symfony/symfony/src/Symfony/Bridge/Twig/Resources/views/Form',
+        ), 'is_dir');
+
+        $twigPaths[] = __DIR__.'/../../../Resources/views/Form';
+
+        $loader = new StubFilesystemLoader($twigPaths);
+
+        $environment = new \Twig_Environment($loader, array('strict_variables' => true));
+        $environment->addExtension(new TranslationExtension(new StubTranslator()));
+        foreach ($this->getTwigExtensions() as $extension) {
+            $environment->addExtension($extension);
+        }
+        $environment->addExtension($this->extension);
+
+        $this->extension->initRuntime($environment);
+    }
+
+    /**
+     * @return \Twig_ExtensionInterface[]
+     */
+    protected function getTwigExtensions()
+    {
+        return array();
+    }
+
+    /**
+     * Renders widget from FormView, in SonataAdmin context, with optional view variables $vars. Returns plain HTML.
+     *
+     * @param FormView $view
+     * @param array    $vars
+     *
+     * @return string
+     */
+    final protected function renderWidget(FormView $view, array $vars = array())
+    {
+        return (string) $this->extension->renderer->searchAndRenderBlock($view, 'widget', $vars);
+    }
+
+    /**
+     * Helper method to strip newline and space characters from html string to make comparing easier.
+     *
+     * @param string $html
+     *
+     * @return string
+     */
+    final protected function cleanHtmlWhitespace($html)
+    {
+        return preg_replace_callback('/>([^<]+)</', function ($value) {
+            return '>'.trim($value[1]).'<';
+        }, $html);
+    }
+
+    /**
+     * @param string $html
+     *
+     * @return string
+     */
+    final protected function cleanHtmlAttributeWhitespace($html)
+    {
+        return preg_replace_callback('~<([A-Z0-9]+) \K(.*?)>~i', function ($m) {
+            return preg_replace('~\s*~', '', $m[0]);
+        }, $html);
+    }
+}

composer.json

@@ -21,6 +21,7 @@
         "symfony/form": "^2.3 || ^3.0",
         "symfony/config": "^2.3 || ^3.0",
         "symfony/translation": "^2.3 || ^3.0",
+        "symfony/twig-bridge": "^2.3.5 || ^3.0",
         "symfony/validator": "^2.3 || ^3.0",
         "symfony/property-access": "^2.3 || ^3.0",
         "twig/twig": "^1.23",