allow to skip tests based on the supported version

Writing tests for Form related features in the Doctrine and Twig bridges
as well as the FrameworkBundle is a pain as soon as these tests are run
with more recent versions of the Form component. This is due to the fact
that our tests in the bridges and bundle extend test cases from the
component. The tests in the component are expanded with every feature
that gets added there. However, these new features are not present in
the other packages in older version and we thus need to be able to skip
them somehow.

Author: xabbuh

Test/FormPerformanceTestCase.php

@@ -11,6 +11,8 @@
 
 namespace Symfony\Component\Form\Test;
 
+use Symfony\Component\Form\Tests\VersionAwareTest;
+
 /**
  * Base class for performance tests.
  *
@@ -21,6 +23,8 @@
  */
 abstract class FormPerformanceTestCase extends FormIntegrationTestCase
 {
+    use VersionAwareTest;
+
     /**
      * @var int
      */

Tests/AbstractLayoutTest.php

@@ -18,6 +18,8 @@
 
 abstract class AbstractLayoutTest extends FormIntegrationTestCase
 {
+    use VersionAwareTest;
+
     protected $csrfTokenManager;
     protected $testableFeatures = [];
 

Tests/Extension/Core/Type/BaseTypeTest.php

@@ -12,12 +12,15 @@
 namespace Symfony\Component\Form\Tests\Extension\Core\Type;
 
 use Symfony\Component\Form\Test\TypeTestCase;
+use Symfony\Component\Form\Tests\VersionAwareTest;
 
 /**
  * @author Bernhard Schussek <[email protected]>
  */
 abstract class BaseTypeTest extends TypeTestCase
 {
+    use VersionAwareTest;
+
     const TESTED_TYPE = '';
 
     public function testPassDisabledAsOption()

Tests/VersionAwareTest.php

@@ -0,0 +1,27 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Form\Tests;
+
+trait VersionAwareTest
+{
+    protected static $supportedFeatureSetVersion = 304;
+
+    /**
+     * @param int $requiredFeatureSetVersion
+     */
+    protected function requiresFeatureSet($requiredFeatureSetVersion)
+    {
+        if ($requiredFeatureSetVersion > static::$supportedFeatureSetVersion) {
+            $this->markTestSkipped(sprintf('Test requires features from symfony/form %.2f but only version %.2f is supported.', $requiredFeatureSetVersion / 100, static::$supportedFeatureSetVersion / 100));
+        }
+    }
+}