%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
class WANObjectCacheTest extends MediaWikiTestCase {
/** @var WANObjectCache */
private $cache;
protected function setUp() {
parent::setUp();
if ( $this->getCliArg( 'use-wanobjectcache' ) ) {
$name = $this->getCliArg( 'use-wanobjectcache' );
$this->cache = ObjectCache::getWANInstance( $name );
} else {
$this->cache = new WANObjectCache( array(
'cache' => new HashBagOStuff(),
'pool' => 'testcache-hash',
'relayer' => new EventRelayerNull( array() )
) );
}
$wanCache = TestingAccessWrapper::newFromObject( $this->cache );
$this->internalCache = $wanCache->cache;
}
/**
* @dataProvider provider_testSetAndGet
* @covers WANObjectCache::set()
* @covers WANObjectCache::get()
* @param mixed $value
* @param integer $ttl
*/
public function testSetAndGet( $value, $ttl ) {
$key = wfRandomString();
$this->cache->set( $key, $value, $ttl );
$curTTL = null;
$this->assertEquals( $value, $this->cache->get( $key, $curTTL ) );
if ( is_infinite( $ttl ) || $ttl == 0 ) {
$this->assertTrue( is_infinite( $curTTL ), "Current TTL is infinite" );
} else {
$this->assertGreaterThan( 0, $curTTL, "Current TTL > 0" );
$this->assertLessThanOrEqual( $ttl, $curTTL, "Current TTL < nominal TTL" );
}
}
public static function provider_testSetAndGet() {
return array(
array( 14141, 3 ),
array( 3535.666, 3 ),
array( array(), 3 ),
array( null, 3 ),
array( '0', 3 ),
array( (object)array( 'meow' ), 3 ),
array( INF, 3 ),
array( '', 3 ),
array( 'pizzacat', INF ),
);
}
public function testGetNotExists() {
$key = wfRandomString();
$curTTL = null;
$value = $this->cache->get( $key, $curTTL );
$this->assertFalse( $value, "Non-existing key has false value" );
$this->assertNull( $curTTL, "Non-existing key has null current TTL" );
}
public function testSetOver() {
$key = wfRandomString();
for ( $i = 0; $i < 3; ++$i ) {
$value = wfRandomString();
$this->cache->set( $key, $value, 3 );
$this->assertEquals( $this->cache->get( $key ), $value );
}
}
/**
* @covers WANObjectCache::getWithSetCallback()
*/
public function testGetWithSetCallback() {
$cache = $this->cache;
$key = wfRandomString();
$value = wfRandomString();
$cKey1 = wfRandomString();
$cKey2 = wfRandomString();
$wasSet = 0;
$func = function( $old, &$ttl ) use ( &$wasSet, $value ) {
++$wasSet;
$ttl = 20; // override with another value
return $value;
};
$wasSet = 0;
$v = $cache->getWithSetCallback( $key, $func, 30, array(), array( 'lockTSE' => 5 ) );
$this->assertEquals( $v, $value );
$this->assertEquals( 1, $wasSet, "Value regenerated" );
$curTTL = null;
$v = $cache->get( $key, $curTTL );
$this->assertLessThanOrEqual( 20, $curTTL, 'Current TTL between 19-20 (overriden)' );
$this->assertGreaterThanOrEqual( 19, $curTTL, 'Current TTL between 19-20 (overriden)' );
$wasSet = 0;
$v = $cache->getWithSetCallback( $key, $func, 30, array(), array( 'lockTSE' => 5 ) );
$this->assertEquals( $v, $value );
$this->assertEquals( 0, $wasSet, "Value not regenerated" );
$priorTime = microtime( true );
usleep( 1 );
$wasSet = 0;
$v = $cache->getWithSetCallback( $key, $func, 30, array( $cKey1, $cKey2 ) );
$this->assertEquals( $v, $value );
$this->assertEquals( 1, $wasSet, "Value regenerated due to check keys" );
$t1 = $cache->getCheckKeyTime( $cKey1 );
$this->assertGreaterThanOrEqual( $priorTime, $t1, 'Check keys generated on miss' );
$t2 = $cache->getCheckKeyTime( $cKey2 );
$this->assertGreaterThanOrEqual( $priorTime, $t2, 'Check keys generated on miss' );
$priorTime = microtime( true );
$wasSet = 0;
$v = $cache->getWithSetCallback( $key, $func, 30, array( $cKey1, $cKey2 ) );
$this->assertEquals( $v, $value );
$this->assertEquals( 1, $wasSet, "Value regenerated due to still-recent check keys" );
$t1 = $cache->getCheckKeyTime( $cKey1 );
$this->assertLessThanOrEqual( $priorTime, $t1, 'Check keys did not change again' );
$t2 = $cache->getCheckKeyTime( $cKey2 );
$this->assertLessThanOrEqual( $priorTime, $t2, 'Check keys did not change again' );
$curTTL = null;
$v = $cache->get( $key, $curTTL, array( $cKey1, $cKey2 ) );
$this->assertEquals( $v, $value );
$this->assertLessThanOrEqual( 0, $curTTL, "Value has current TTL < 0 due to check keys" );
}
/**
* @covers WANObjectCache::getWithSetCallback()
*/
public function testLockTSE() {
$cache = $this->cache;
$key = wfRandomString();
$value = wfRandomString();
$calls = 0;
$func = function() use ( &$calls, $value ) {
++$calls;
return $value;
};
$cache->delete( $key );
$ret = $cache->getWithSetCallback( $key, 30, $func, array(), array( 'lockTSE' => 5 ) );
$this->assertEquals( $value, $ret );
$this->assertEquals( 1, $calls, 'Value was populated' );
// Acquire a lock to verify that getWithSetCallback uses lockTSE properly
$this->internalCache->lock( $key, 0 );
$ret = $cache->getWithSetCallback( $key, 30, $func, array(), array( 'lockTSE' => 5 ) );
$this->assertEquals( $value, $ret );
$this->assertEquals( 1, $calls, 'Callback was not used' );
}
/**
* @covers WANObjectCache::getMulti()
*/
public function testGetMulti() {
$cache = $this->cache;
$value1 = array( 'this' => 'is', 'a' => 'test' );
$value2 = array( 'this' => 'is', 'another' => 'test' );
$key1 = wfRandomString();
$key2 = wfRandomString();
$key3 = wfRandomString();
$cache->set( $key1, $value1, 5 );
$cache->set( $key2, $value2, 10 );
$curTTLs = array();
$this->assertEquals(
array( $key1 => $value1, $key2 => $value2 ),
$cache->getMulti( array( $key1, $key2, $key3 ), $curTTLs )
);
$this->assertEquals( 2, count( $curTTLs ), "Two current TTLs in array" );
$this->assertGreaterThan( 0, $curTTLs[$key1], "Key 1 has current TTL > 0" );
$this->assertGreaterThan( 0, $curTTLs[$key2], "Key 2 has current TTL > 0" );
$cKey1 = wfRandomString();
$cKey2 = wfRandomString();
$curTTLs = array();
$this->assertEquals(
array( $key1 => $value1, $key2 => $value2 ),
$cache->getMulti( array( $key1, $key2, $key3 ), $curTTLs ),
'Result array populated'
);
$priorTime = microtime( true );
usleep( 1 );
$curTTLs = array();
$this->assertEquals(
array( $key1 => $value1, $key2 => $value2 ),
$cache->getMulti( array( $key1, $key2, $key3 ), $curTTLs, array( $cKey1, $cKey2 ) ),
"Result array populated even with new check keys"
);
$t1 = $cache->getCheckKeyTime( $cKey1 );
$this->assertGreaterThanOrEqual( $priorTime, $t1, 'Check key 1 generated on miss' );
$t2 = $cache->getCheckKeyTime( $cKey2 );
$this->assertGreaterThanOrEqual( $priorTime, $t2, 'Check key 2 generated on miss' );
$this->assertEquals( 2, count( $curTTLs ), "Current TTLs array set" );
$this->assertLessThanOrEqual( 0, $curTTLs[$key1], 'Key 1 has current TTL <= 0' );
$this->assertLessThanOrEqual( 0, $curTTLs[$key2], 'Key 2 has current TTL <= 0' );
usleep( 1 );
$curTTLs = array();
$this->assertEquals(
array( $key1 => $value1, $key2 => $value2 ),
$cache->getMulti( array( $key1, $key2, $key3 ), $curTTLs, array( $cKey1, $cKey2 ) ),
"Result array still populated even with new check keys"
);
$this->assertEquals( 2, count( $curTTLs ), "Current TTLs still array set" );
$this->assertLessThan( 0, $curTTLs[$key1], 'Key 1 has negative current TTL' );
$this->assertLessThan( 0, $curTTLs[$key2], 'Key 2 has negative current TTL' );
}
/**
* @covers WANObjectCache::delete()
*/
public function testDelete() {
$key = wfRandomString();
$value = wfRandomString();
$this->cache->set( $key, $value );
$curTTL = null;
$v = $this->cache->get( $key, $curTTL );
$this->assertEquals( $value, $v, "Key was created with value" );
$this->assertGreaterThan( 0, $curTTL, "Existing key has current TTL > 0" );
$this->cache->delete( $key );
$curTTL = null;
$v = $this->cache->get( $key, $curTTL );
$this->assertFalse( $v, "Deleted key has false value" );
$this->assertLessThan( 0, $curTTL, "Deleted key has current TTL < 0" );
$this->cache->set( $key, $value . 'more' );
$this->assertFalse( $v, "Deleted key is tombstoned and has false value" );
$this->assertLessThan( 0, $curTTL, "Deleted key is tombstoned and has current TTL < 0" );
}
/**
* @covers WANObjectCache::touchCheckKey()
* @covers WANObjectCache::resetCheckKey()
* @covers WANObjectCache::getCheckKeyTime()
*/
public function testTouchKeys() {
$key = wfRandomString();
$priorTime = microtime( true );
usleep( 1 );
$t0 = $this->cache->getCheckKeyTime( $key );
$this->assertGreaterThanOrEqual( $priorTime, $t0, 'Check key auto-created' );
$priorTime = microtime( true );
usleep( 1 );
$this->cache->touchCheckKey( $key );
$t1 = $this->cache->getCheckKeyTime( $key );
$this->assertGreaterThanOrEqual( $priorTime, $t1, 'Check key created' );
$t2 = $this->cache->getCheckKeyTime( $key );
$this->assertEquals( $t1, $t2, 'Check key time did not change' );
usleep( 1 );
$this->cache->touchCheckKey( $key );
$t3 = $this->cache->getCheckKeyTime( $key );
$this->assertGreaterThan( $t2, $t3, 'Check key time increased' );
$t4 = $this->cache->getCheckKeyTime( $key );
$this->assertEquals( $t3, $t4, 'Check key time did not change' );
usleep( 1 );
$this->cache->resetCheckKey( $key );
$t5 = $this->cache->getCheckKeyTime( $key );
$this->assertGreaterThan( $t4, $t5, 'Check key time increased' );
$t6 = $this->cache->getCheckKeyTime( $key );
$this->assertEquals( $t5, $t6, 'Check key time did not change' );
}
}
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