2bcf34421a
Cache misses from the backend cache the same as hits. Bug: T127772 Change-Id: If2fe1920411b24862acea888c627db13717da8bd
70 lines
2.1 KiB
PHP
70 lines
2.1 KiB
PHP
<?php
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/**
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* @group BagOStuff
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*/
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class CachedBagOStuffTest extends PHPUnit_Framework_TestCase {
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public function testGetFromBackend() {
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$backend = new HashBagOStuff;
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$cache = new CachedBagOStuff( $backend );
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$backend->set( 'foo', 'bar' );
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$this->assertEquals( 'bar', $cache->get( 'foo' ) );
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$backend->set( 'foo', 'baz' );
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$this->assertEquals( 'bar', $cache->get( 'foo' ), 'cached' );
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}
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public function testSetAndDelete() {
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$backend = new HashBagOStuff;
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$cache = new CachedBagOStuff( $backend );
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for ( $i = 0; $i < 10; $i++ ) {
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$cache->set( "key$i", 1 );
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$this->assertEquals( 1, $cache->get( "key$i" ) );
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$this->assertEquals( 1, $backend->get( "key$i" ) );
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$cache->delete( "key$i" );
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$this->assertEquals( false, $cache->get( "key$i" ) );
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$this->assertEquals( false, $backend->get( "key$i" ) );
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}
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}
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public function testWriteCacheOnly() {
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$backend = new HashBagOStuff;
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$cache = new CachedBagOStuff( $backend );
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$cache->set( 'foo', 'bar', 0, CachedBagOStuff::WRITE_CACHE_ONLY );
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$this->assertEquals( 'bar', $cache->get( 'foo' ) );
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$this->assertFalse( $backend->get( 'foo' ) );
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$cache->set( 'foo', 'old' );
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$this->assertEquals( 'old', $cache->get( 'foo' ) );
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$this->assertEquals( 'old', $backend->get( 'foo' ) );
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$cache->set( 'foo', 'new', 0, CachedBagOStuff::WRITE_CACHE_ONLY );
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$this->assertEquals( 'new', $cache->get( 'foo' ) );
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$this->assertEquals( 'old', $backend->get( 'foo' ) );
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$cache->delete( 'foo', CachedBagOStuff::WRITE_CACHE_ONLY );
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$this->assertEquals( 'old', $cache->get( 'foo' ) ); // Reloaded from backend
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}
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public function testCacheBackendMisses() {
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$backend = new HashBagOStuff;
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$cache = new CachedBagOStuff( $backend );
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// First hit primes the cache with miss from the backend
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$this->assertEquals( false, $cache->get( 'foo' ) );
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// Change the value in the backend
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$backend->set( 'foo', true );
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// Second hit returns the cached miss
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$this->assertEquals( false, $cache->get( 'foo' ) );
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// But a fresh value is read from the backend
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$backend->set( 'bar', true );
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$this->assertEquals( true, $cache->get( 'bar' ) );
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}
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}
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