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<?php
/**
* @group Database
*/
class MultiWriteBagOStuffTest extends MediaWikiTestCase {
/** @var HashBagOStuff */
private $cache1;
/** @var HashBagOStuff */
private $cache2;
/** @var MultiWriteBagOStuff */
private $cache;
protected function setUp() {
parent::setUp();
$this->cache1 = new HashBagOStuff();
$this->cache2 = new HashBagOStuff();
$this->cache = new MultiWriteBagOStuff( [
'caches' => [ $this->cache1, $this->cache2 ],
'replication' => 'async',
'asyncHandler' => 'DeferredUpdates::addCallableUpdate'
] );
}
/**
* @covers MultiWriteBagOStuff::set
* @covers MultiWriteBagOStuff::doWrite
*/
public function testSetImmediate() {
$key = wfRandomString();
$value = wfRandomString();
$this->cache->set( $key, $value );
// Set in tier 1
$this->assertEquals( $value, $this->cache1->get( $key ), 'Written to tier 1' );
// Set in tier 2
$this->assertEquals( $value, $this->cache2->get( $key ), 'Written to tier 2' );
}
/**
* @covers MultiWriteBagOStuff
*/
public function testSyncMerge() {
$key = wfRandomString();
$value = wfRandomString();
$func = function () use ( $value ) {
return $value;
};
// XXX: DeferredUpdates bound to transactions in CLI mode
$dbw = wfGetDB( DB_MASTER );
$dbw->begin();
$this->cache->merge( $key, $func );
// Set in tier 1
$this->assertEquals( $value, $this->cache1->get( $key ), 'Written to tier 1' );
// Not yet set in tier 2
$this->assertEquals( false, $this->cache2->get( $key ), 'Not written to tier 2' );
$dbw->commit();
// Set in tier 2
$this->assertEquals( $value, $this->cache2->get( $key ), 'Written to tier 2' );
$key = wfRandomString();
$dbw->begin();
$this->cache->merge( $key, $func, 0, 1, BagOStuff::WRITE_SYNC );
// Set in tier 1
$this->assertEquals( $value, $this->cache1->get( $key ), 'Written to tier 1' );
// Also set in tier 2
$this->assertEquals( $value, $this->cache2->get( $key ), 'Written to tier 2' );
$dbw->commit();
}
/**
* @covers MultiWriteBagOStuff::set
*/
public function testSetDelayed() {
$key = wfRandomString();
$value = (object)[ 'v' => wfRandomString() ];
$expectValue = clone $value;
// XXX: DeferredUpdates bound to transactions in CLI mode
$dbw = wfGetDB( DB_MASTER );
$dbw->begin();
$this->cache->set( $key, $value );
// Test that later changes to $value don't affect the saved value (e.g. T168040)
$value->v = 'bogus';
// Set in tier 1
$this->assertEquals( $expectValue, $this->cache1->get( $key ), 'Written to tier 1' );
// Not yet set in tier 2
$this->assertEquals( false, $this->cache2->get( $key ), 'Not written to tier 2' );
$dbw->commit();
// Set in tier 2
$this->assertEquals( $expectValue, $this->cache2->get( $key ), 'Written to tier 2' );
}
/**
* @covers MultiWriteBagOStuff::makeKey
*/
public function testMakeKey() {
$cache1 = $this->getMockBuilder( HashBagOStuff::class )
->setMethods( [ 'makeKey' ] )->getMock();
$cache1->expects( $this->once() )->method( 'makeKey' )
->willReturn( 'special' );
$cache2 = $this->getMockBuilder( HashBagOStuff::class )
->setMethods( [ 'makeKey' ] )->getMock();
$cache2->expects( $this->never() )->method( 'makeKey' );
$cache = new MultiWriteBagOStuff( [ 'caches' => [ $cache1, $cache2 ] ] );
$this->assertSame( 'special', $cache->makeKey( 'a', 'b' ) );
}
/**
* @covers MultiWriteBagOStuff::makeGlobalKey
*/
public function testMakeGlobalKey() {
$cache1 = $this->getMockBuilder( HashBagOStuff::class )
->setMethods( [ 'makeGlobalKey' ] )->getMock();
$cache1->expects( $this->once() )->method( 'makeGlobalKey' )
->willReturn( 'special' );
$cache2 = $this->getMockBuilder( HashBagOStuff::class )
->setMethods( [ 'makeGlobalKey' ] )->getMock();
$cache2->expects( $this->never() )->method( 'makeGlobalKey' );
$cache = new MultiWriteBagOStuff( [ 'caches' => [ $cache1, $cache2 ] ] );
$this->assertSame( 'special', $cache->makeGlobalKey( 'a', 'b' ) );
}
}
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