--- /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\HttpKernel\Tests\CacheWarmer;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\HttpKernel\CacheWarmer\CacheWarmer;
+
+class CacheWarmerTest extends TestCase
+{
+ protected static $cacheFile;
+
+ public static function setUpBeforeClass()
+ {
+ self::$cacheFile = tempnam(sys_get_temp_dir(), 'sf2_cache_warmer_dir');
+ }
+
+ public static function tearDownAfterClass()
+ {
+ @unlink(self::$cacheFile);
+ }
+
+ public function testWriteCacheFileCreatesTheFile()
+ {
+ $warmer = new TestCacheWarmer(self::$cacheFile);
+ $warmer->warmUp(dirname(self::$cacheFile));
+
+ $this->assertFileExists(self::$cacheFile);
+ }
+
+ /**
+ * @expectedException \RuntimeException
+ */
+ public function testWriteNonWritableCacheFileThrowsARuntimeException()
+ {
+ $nonWritableFile = '/this/file/is/very/probably/not/writable';
+ $warmer = new TestCacheWarmer($nonWritableFile);
+ $warmer->warmUp(dirname($nonWritableFile));
+ }
+}
+
+class TestCacheWarmer extends CacheWarmer
+{
+ protected $file;
+
+ public function __construct($file)
+ {
+ $this->file = $file;
+ }
+
+ public function warmUp($cacheDir)
+ {
+ $this->writeCacheFile($this->file, 'content');
+ }
+
+ public function isOptional()
+ {
+ return false;
+ }
+}