tests/CacheTest.php

   1 <?php
   2 /**
   3  * Cache tests
   4  */
   5
   6 // required to access $_SESSION array
   7 session_start();
   8
   9 require_once 'application/Cache.php';
  10
  11 /**
  12  * Unitary tests for cached pages
  13  */
  14 class CacheTest extends PHPUnit_Framework_TestCase
  15 {
  16     // test cache directory
  17     protected static $testCacheDir = 'sandbox/dummycache';
  18
  19     // dummy cached file names / content
  20     protected static $pages = array('a', 'toto', 'd7b59c');
  21
  22
  23     /**
  24      * Populate the cache with dummy files
  25      */
  26     public function setUp()
  27     {
  28         if (! is_dir(self::$testCacheDir)) {
  29             mkdir(self::$testCacheDir);
  30         } else {
  31             array_map('unlink', glob(self::$testCacheDir.'/*'));
  32         }
  33
  34         foreach (self::$pages as $page) {
  35             file_put_contents(self::$testCacheDir.'/'.$page.'.cache', $page);
  36         }
  37         file_put_contents(self::$testCacheDir.'/intru.der', 'ShouldNotBeThere');
  38     }
  39
  40     /**
  41      * Remove dummycache folder after each tests.
  42      */
  43     public function tearDown()
  44     {
  45         array_map('unlink', glob(self::$testCacheDir.'/*'));
  46         rmdir(self::$testCacheDir);
  47     }
  48
  49     /**
  50      * Purge cached pages
  51      */
  52     public function testPurgeCachedPages()
  53     {
  54         purgeCachedPages(self::$testCacheDir);
  55         foreach (self::$pages as $page) {
  56             $this->assertFileNotExists(self::$testCacheDir.'/'.$page.'.cache');
  57         }
  58
  59         $this->assertFileExists(self::$testCacheDir.'/intru.der');
  60     }
  61
  62     /**
  63      * Purge cached pages - missing directory
  64      */
  65     public function testPurgeCachedPagesMissingDir()
  66     {
  67         $oldlog = ini_get('error_log');
  68         ini_set('error_log', '/dev/null');
  69         $this->assertEquals(
  70             'Cannot purge sandbox/dummycache_missing: no directory',
  71             purgeCachedPages(self::$testCacheDir.'_missing')
  72         );
  73         ini_set('error_log', $oldlog);
  74     }
  75
  76     /**
  77      * Purge cached pages and session cache
  78      */
  79     public function testInvalidateCaches()
  80     {
  81         $this->assertArrayNotHasKey('tags', $_SESSION);
  82         $_SESSION['tags'] = array('goodbye', 'cruel', 'world');
  83
  84         invalidateCaches(self::$testCacheDir);
  85         foreach (self::$pages as $page) {
  86             $this->assertFileNotExists(self::$testCacheDir.'/'.$page.'.cache');
  87         }
  88
  89         $this->assertArrayNotHasKey('tags', $_SESSION);
  90     }
  91 }