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      * Purge cached pages
  42      */
  43     public function testPurgeCachedPages()
  44     {
  45         purgeCachedPages(self::$testCacheDir);
  46         foreach (self::$pages as $page) {
  47             $this->assertFileNotExists(self::$testCacheDir.'/'.$page.'.cache');
  48         }
  49
  50         $this->assertFileExists(self::$testCacheDir.'/intru.der');
  51     }
  52
  53     /**
  54      * Purge cached pages - missing directory
  55      */
  56     public function testPurgeCachedPagesMissingDir()
  57     {
  58         $this->assertEquals(
  59             'Cannot purge sandbox/dummycache_missing: no directory',
  60             purgeCachedPages(self::$testCacheDir.'_missing')
  61         );
  62     }
  63
  64     /**
  65      * Purge cached pages and session cache
  66      */
  67     public function testInvalidateCaches()
  68     {
  69         $this->assertArrayNotHasKey('tags', $_SESSION);
  70         $_SESSION['tags'] = array('goodbye', 'cruel', 'world');
  71
  72         invalidateCaches(self::$testCacheDir);
  73         foreach (self::$pages as $page) {
  74             $this->assertFileNotExists(self::$testCacheDir.'/'.$page.'.cache');
  75         }
  76
  77         $this->assertArrayNotHasKey('tags', $_SESSION);
  78     }
  79 }