tests/phpunit/unit/includes/libs/objectcache/ReplicatedBagOStuffTest.php

   1 <?php
   2
   3 class ReplicatedBagOStuffTest extends \MediaWikiUnitTestCase {
   4         /** @var HashBagOStuff */
   5         private $writeCache;
   6         /** @var HashBagOStuff */
   7         private $readCache;
   8         /** @var ReplicatedBagOStuff */
   9         private $cache;
  10
  11         protected function setUp() {
  12                 parent::setUp();
  13
  14                 $this->writeCache = new HashBagOStuff();
  15                 $this->readCache = new HashBagOStuff();
  16                 $this->cache = new ReplicatedBagOStuff( [
  17                         'writeFactory' => $this->writeCache,
  18                         'readFactory' => $this->readCache,
  19                 ] );
  20         }
  21
  22         /**
  23          * @covers ReplicatedBagOStuff::set
  24          */
  25         public function testSet() {
  26                 $key = 'a key';
  27                 $value = 'a value';
  28                 $this->cache->set( $key, $value );
  29
  30                 // Write to master.
  31                 $this->assertEquals( $value, $this->writeCache->get( $key ) );
  32                 // Don't write to replica. Replication is deferred to backend.
  33                 $this->assertFalse( $this->readCache->get( $key ) );
  34         }
  35
  36         /**
  37          * @covers ReplicatedBagOStuff::get
  38          */
  39         public function testGet() {
  40                 $key = 'a key';
  41
  42                 $write = 'one value';
  43                 $this->writeCache->set( $key, $write );
  44                 $read = 'another value';
  45                 $this->readCache->set( $key, $read );
  46
  47                 // Read from replica.
  48                 $this->assertEquals( $read, $this->cache->get( $key ) );
  49         }
  50
  51         /**
  52          * @covers ReplicatedBagOStuff::get
  53          */
  54         public function testGetAbsent() {
  55                 $key = 'a key';
  56                 $value = 'a value';
  57                 $this->writeCache->set( $key, $value );
  58
  59                 // Don't read from master. No failover if value is absent.
  60                 $this->assertFalse( $this->cache->get( $key ) );
  61         }
  62 }