[Intl] Added IntlTestHelper class for convenience

src/Symfony/Component/Intl/Util/IntlTestHelper.php

@@ -0,0 +1,46 @@
+<?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\Intl\Util;
+
+use Symfony\Component\Intl\Intl;
+
+/**
+ * Helper class for preparing test cases that rely on the Intl component.
+ *
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+class IntlTestHelper
+{
+    /**
+     * Prepares the given test case to use the Intl component.
+     *
+     * @param \PhpUnit_Framework_TestCase $testCase
+     */
+    public static function setUp(\PhpUnit_Framework_TestCase $testCase)
+    {
+        if (!Intl::isExtensionLoaded()) {
+            $testCase->markTestSkipped('The intl extension is not available.');
+        }
+
+        if (IcuVersion::compare(Intl::getIcuVersion(), Intl::getIcuStubVersion(), '!=', $precision = 1)) {
+            $testCase->markTestSkipped('Please change ICU version to ' . Intl::getIcuStubVersion());
+        }
+
+        Intl::setDataSource(Intl::STUB);
+
+        \Locale::setDefault('en');
+    }
+    /**
+     * Must not be instantiated.
+     */
+    private function __construct() {}
+}