Add test coverage for Twig_Cache_Filesystem

test/Twig/Tests/Cache/FilesystemTest.php

@@ -0,0 +1,170 @@
+<?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.
+ */
+
+class Twig_Tests_Cache_FilesystemTest extends PHPUnit_Framework_TestCase
+{
+    protected $nonce;
+    protected $classname;
+    protected $directory;
+    protected $cache;
+
+    public function setUp()
+    {
+        $this->nonce = hash('sha256', uniqid(mt_rand(), true));
+        $this->classname = '__Twig_Tests_Cache_FilesystemTest_Template_'.$this->nonce;
+        $this->directory = sys_get_temp_dir().'/twig-test-'.$this->nonce;
+        $this->cache = new Twig_Cache_Filesystem($this->directory);
+    }
+
+    public function tearDown()
+    {
+        if (file_exists($this->directory)) {
+            $iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($this->directory), RecursiveIteratorIterator::CHILD_FIRST);
+            foreach ($iterator as $filename => $fileInfo) {
+                if (!$iterator->isDot()) {
+                    if ($fileInfo->isDir()) {
+                        rmdir($filename);
+                    } else {
+                        unlink($filename);
+                    }
+                }
+            }
+            rmdir($this->directory);
+        }
+    }
+
+    public function testLoad()
+    {
+        $key = $this->directory.'/cache/cachefile.php';
+
+        $dir = dirname($key);
+        @mkdir($dir, 0777, true);
+        $this->assertTrue(is_dir($dir));
+
+        $this->assertFalse(class_exists($this->classname, false));
+
+        $content = $this->generateSource();
+        file_put_contents($key, $content);
+
+        $this->cache->load($key);
+
+        $this->assertTrue(class_exists($this->classname, false));
+    }
+
+    public function testLoadMissing()
+    {
+        $key = $this->directory.'/cache/cachefile.php';
+
+        $this->assertFalse(class_exists($this->classname, false));
+
+        $this->cache->load($key);
+
+        $this->assertFalse(class_exists($this->classname, false));
+    }
+
+    public function testWrite()
+    {
+        $key = $this->directory.'/cache/cachefile.php';
+        $content = $this->generateSource();
+
+        $this->assertFalse(file_exists($key));
+        $this->assertFalse(file_exists($this->directory));
+
+        $this->cache->write($key, $content);
+
+        $this->assertTrue(file_exists($this->directory));
+        $this->assertTrue(file_exists($key));
+        $this->assertSame(file_get_contents($key), $content);
+    }
+
+    /**
+     * @expectedException RuntimeException
+     * @expectedExceptionMessageRegExp #^Unable to create the cache directory #
+     */
+    public function testWriteFailMkdir()
+    {
+        $key = $this->directory.'/cache/cachefile.php';
+        $content = $this->generateSource();
+
+        $this->assertFalse(file_exists($key));
+
+        // Create read-only root directory.
+        @mkdir($this->directory, 0555, true);
+        $this->assertTrue(is_dir($this->directory));
+
+        $this->cache->write($key, $content);
+    }
+
+    /**
+     * @expectedException RuntimeException
+     * @expectedExceptionMessageRegExp #^Unable to write in the cache directory #
+     */
+    public function testWriteFailDirWritable()
+    {
+        $key = $this->directory.'/cache/cachefile.php';
+        $content = $this->generateSource();
+
+        $this->assertFalse(file_exists($key));
+
+        // Create root directory.
+        @mkdir($this->directory, 0777, true);
+        // Create read-only subdirectory.
+        @mkdir($this->directory.'/cache' , 0555);
+        $this->assertTrue(is_dir($this->directory.'/cache'));
+
+        $this->cache->write($key, $content);
+    }
+
+    /**
+     * @expectedException RuntimeException
+     * @expectedExceptionMessageRegExp #^Failed to write cache file #
+     */
+    public function testWriteFailWriteFile()
+    {
+        $key = $this->directory.'/cache/cachefile.php';
+        $content = $this->generateSource();
+
+        $this->assertFalse(file_exists($key));
+
+        // Create a directory in the place of the cache file.
+        @mkdir($key, 0777, true);
+        $this->assertTrue(is_dir($key));
+
+        $this->cache->write($key, $content);
+    }
+
+    public function testGetTimestamp()
+    {
+        $key = $this->directory.'/cache/cachefile.php';
+
+        $dir = dirname($key);
+        @mkdir($dir, 0777, true);
+        $this->assertTrue(is_dir($dir));
+
+        // Create the file with a specific modification time.
+        touch($key, 1234567890);
+
+        $this->assertSame(1234567890, $this->cache->getTimestamp($key));
+    }
+
+    public function testGetTimestampMissingFile()
+    {
+        $key = $this->directory.'/cache/cachefile.php';
+        $this->assertSame(0, $this->cache->getTimestamp($key));
+    }
+
+    private function generateSource()
+    {
+        return strtr('<?php class {{classname}} {}', array(
+            '{{classname}}' => $this->classname,
+        ));
+    }
+}