tests/phpunit/includes/db/LBFactoryTest.php

   1 <?php
   2 /**
   3  * Holds tests for LBFactory abstract MediaWiki class.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @author Antoine Musso
  22  * @copyright © 2013 Antoine Musso
  23  * @copyright © 2013 Wikimedia Foundation Inc.
  24  */
  25
  26 use Wikimedia\Rdbms\LBFactorySimple;
  27 use Wikimedia\Rdbms\LBFactoryMulti;
  28 use Wikimedia\Rdbms\LoadBalancer;
  29 use Wikimedia\Rdbms\ChronologyProtector;
  30 use Wikimedia\Rdbms\DatabaseMysqli;
  31 use Wikimedia\Rdbms\MySQLMasterPos;
  32 use Wikimedia\Rdbms\DatabaseDomain;
  33
  34 /**
  35  * @group Database
  36  * @covers \Wikimedia\Rdbms\LBFactorySimple
  37  * @covers \Wikimedia\Rdbms\LBFactoryMulti
  38  */
  39 class LBFactoryTest extends MediaWikiTestCase {
  40
  41         /**
  42          * @covers MWLBFactory::getLBFactoryClass
  43          * @dataProvider getLBFactoryClassProvider
  44          */
  45         public function testGetLBFactoryClass( $expected, $deprecated ) {
  46                 $mockDB = $this->getMockBuilder( DatabaseMysqli::class )
  47                         ->disableOriginalConstructor()
  48                         ->getMock();
  49
  50                 $config = [
  51                         'class'          => $deprecated,
  52                         'connection'     => $mockDB,
  53                         # Various other parameters required:
  54                         'sectionsByDB'   => [],
  55                         'sectionLoads'   => [],
  56                         'serverTemplate' => [],
  57                 ];
  58
  59                 $this->hideDeprecated( '$wgLBFactoryConf must be updated. See RELEASE-NOTES for details' );
  60                 $result = MWLBFactory::getLBFactoryClass( $config );
  61
  62                 $this->assertEquals( $expected, $result );
  63         }
  64
  65         public function getLBFactoryClassProvider() {
  66                 return [
  67                         # Format: new class, old class
  68                         [ Wikimedia\Rdbms\LBFactorySimple::class, 'LBFactory_Simple' ],
  69                         [ Wikimedia\Rdbms\LBFactorySingle::class, 'LBFactory_Single' ],
  70                         [ Wikimedia\Rdbms\LBFactoryMulti::class, 'LBFactory_Multi' ],
  71                         [ Wikimedia\Rdbms\LBFactorySimple::class, 'LBFactorySimple' ],
  72                         [ Wikimedia\Rdbms\LBFactorySingle::class, 'LBFactorySingle' ],
  73                         [ Wikimedia\Rdbms\LBFactoryMulti::class, 'LBFactoryMulti' ],
  74                 ];
  75         }
  76
  77         public function testLBFactorySimpleServer() {
  78                 global $wgDBserver, $wgDBname, $wgDBuser, $wgDBpassword, $wgDBtype, $wgSQLiteDataDir;
  79
  80                 $servers = [
  81                         [
  82                                 'host'        => $wgDBserver,
  83                                 'dbname'      => $wgDBname,
  84                                 'user'        => $wgDBuser,
  85                                 'password'    => $wgDBpassword,
  86                                 'type'        => $wgDBtype,
  87                                 'dbDirectory' => $wgSQLiteDataDir,
  88                                 'load'        => 0,
  89                                 'flags'       => DBO_TRX // REPEATABLE-READ for consistency
  90                         ],
  91                 ];
  92
  93                 $factory = new LBFactorySimple( [ 'servers' => $servers ] );
  94                 $lb = $factory->getMainLB();
  95
  96                 $dbw = $lb->getConnection( DB_MASTER );
  97                 $this->assertTrue( $dbw->getLBInfo( 'master' ), 'master shows as master' );
  98
  99                 $dbr = $lb->getConnection( DB_REPLICA );
 100                 $this->assertTrue( $dbr->getLBInfo( 'master' ), 'DB_REPLICA also gets the master' );
 101
 102                 $factory->shutdown();
 103                 $lb->closeAll();
 104         }
 105
 106         public function testLBFactorySimpleServers() {
 107                 global $wgDBserver, $wgDBname, $wgDBuser, $wgDBpassword, $wgDBtype, $wgSQLiteDataDir;
 108
 109                 $servers = [
 110                         [ // master
 111                                 'host'        => $wgDBserver,
 112                                 'dbname'      => $wgDBname,
 113                                 'user'        => $wgDBuser,
 114                                 'password'    => $wgDBpassword,
 115                                 'type'        => $wgDBtype,
 116                                 'dbDirectory' => $wgSQLiteDataDir,
 117                                 'load'        => 0,
 118                                 'flags'       => DBO_TRX // REPEATABLE-READ for consistency
 119                         ],
 120                         [ // emulated slave
 121                                 'host'        => $wgDBserver,
 122                                 'dbname'      => $wgDBname,
 123                                 'user'        => $wgDBuser,
 124                                 'password'    => $wgDBpassword,
 125                                 'type'        => $wgDBtype,
 126                                 'dbDirectory' => $wgSQLiteDataDir,
 127                                 'load'        => 100,
 128                                 'flags'       => DBO_TRX // REPEATABLE-READ for consistency
 129                         ]
 130                 ];
 131
 132                 $factory = new LBFactorySimple( [
 133                         'servers' => $servers,
 134                         'loadMonitorClass' => LoadMonitorNull::class
 135                 ] );
 136                 $lb = $factory->getMainLB();
 137
 138                 $dbw = $lb->getConnection( DB_MASTER );
 139                 $this->assertTrue( $dbw->getLBInfo( 'master' ), 'master shows as master' );
 140                 $this->assertEquals(
 141                         ( $wgDBserver != '' ) ? $wgDBserver : 'localhost',
 142                         $dbw->getLBInfo( 'clusterMasterHost' ),
 143                         'cluster master set' );
 144
 145                 $dbr = $lb->getConnection( DB_REPLICA );
 146                 $this->assertTrue( $dbr->getLBInfo( 'replica' ), 'slave shows as slave' );
 147                 $this->assertEquals(
 148                         ( $wgDBserver != '' ) ? $wgDBserver : 'localhost',
 149                         $dbr->getLBInfo( 'clusterMasterHost' ),
 150                         'cluster master set' );
 151
 152                 $factory->shutdown();
 153                 $lb->closeAll();
 154         }
 155
 156         public function testLBFactoryMultiConns() {
 157                 $factory = $this->newLBFactoryMultiLBs();
 158
 159                 $dbw = $factory->getMainLB()->getConnection( DB_MASTER );
 160                 $this->assertTrue( $dbw->getLBInfo( 'master' ), 'master shows as master' );
 161
 162                 $dbr = $factory->getMainLB()->getConnection( DB_REPLICA );
 163                 $this->assertTrue( $dbr->getLBInfo( 'replica' ), 'slave shows as slave' );
 164
 165                 // Destructor should trigger without round stage errors
 166                 unset( $factory );
 167         }
 168
 169         public function testLBFactoryMultiRoundCallbacks() {
 170                 $called = 0;
 171                 $countLBsFunc = function ( LBFactoryMulti $factory ) {
 172                         $count = 0;
 173                         $factory->forEachLB( function () use ( &$count ) {
 174                                 ++$count;
 175                         } );
 176
 177                         return $count;
 178                 };
 179
 180                 $factory = $this->newLBFactoryMultiLBs();
 181                 $this->assertEquals( 0, $countLBsFunc( $factory ) );
 182                 $dbw = $factory->getMainLB()->getConnection( DB_MASTER );
 183                 $this->assertEquals( 1, $countLBsFunc( $factory ) );
 184                 // Test that LoadBalancer instances made during pre-commit callbacks in do not
 185                 // throw DBTransactionError due to transaction ROUND_* stages being mismatched.
 186                 $factory->beginMasterChanges( __METHOD__ );
 187                 $dbw->onTransactionPreCommitOrIdle( function () use ( $factory, &$called ) {
 188                         ++$called;
 189                         // Trigger s1 LoadBalancer instantiation during "finalize" stage.
 190                         // There is no s1wiki DB to select so it is not in getConnection(),
 191                         // but this fools getMainLB() at least.
 192                         $factory->getMainLB( 's1wiki' )->getConnection( DB_MASTER );
 193                 } );
 194                 $factory->commitMasterChanges( __METHOD__ );
 195                 $this->assertEquals( 1, $called );
 196                 $this->assertEquals( 2, $countLBsFunc( $factory ) );
 197                 $factory->shutdown();
 198                 $factory->closeAll();
 199
 200                 $called = 0;
 201                 $factory = $this->newLBFactoryMultiLBs();
 202                 $this->assertEquals( 0, $countLBsFunc( $factory ) );
 203                 $dbw = $factory->getMainLB()->getConnection( DB_MASTER );
 204                 $this->assertEquals( 1, $countLBsFunc( $factory ) );
 205                 // Test that LoadBalancer instances made during pre-commit callbacks in do not
 206                 // throw DBTransactionError due to transaction ROUND_* stages being mismatched.hrow
 207                 // DBTransactionError due to transaction ROUND_* stages being mismatched.
 208                 $factory->beginMasterChanges( __METHOD__ );
 209                 $dbw->query( "SELECT 1 as t", __METHOD__ );
 210                 $dbw->onTransactionResolution( function () use ( $factory, &$called ) {
 211                         ++$called;
 212                         // Trigger s1 LoadBalancer instantiation during "finalize" stage.
 213                         // There is no s1wiki DB to select so it is not in getConnection(),
 214                         // but this fools getMainLB() at least.
 215                         $factory->getMainLB( 's1wiki' )->getConnection( DB_MASTER );
 216                 } );
 217                 $factory->commitMasterChanges( __METHOD__ );
 218                 $this->assertEquals( 1, $called );
 219                 $this->assertEquals( 2, $countLBsFunc( $factory ) );
 220                 $factory->shutdown();
 221                 $factory->closeAll();
 222
 223                 $factory = $this->newLBFactoryMultiLBs();
 224                 $dbw = $factory->getMainLB()->getConnection( DB_MASTER );
 225                 // DBTransactionError should not be thrown
 226                 $ran = 0;
 227                 $dbw->onTransactionPreCommitOrIdle( function () use ( &$ran ) {
 228                         ++$ran;
 229                 } );
 230                 $factory->commitAll( __METHOD__ );
 231                 $this->assertEquals( 1, $ran );
 232
 233                 $factory->shutdown();
 234                 $factory->closeAll();
 235         }
 236
 237         private function newLBFactoryMultiLBs() {
 238                 global $wgDBserver, $wgDBname, $wgDBuser, $wgDBpassword, $wgDBtype, $wgSQLiteDataDir;
 239
 240                 return new LBFactoryMulti( [
 241                         'sectionsByDB' => [
 242                                 's1wiki' => 's1',
 243                         ],
 244                         'sectionLoads' => [
 245                                 's1' => [
 246                                         'test-db3' => 0,
 247                                         'test-db4' => 100,
 248                                 ],
 249                                 'DEFAULT' => [
 250                                         'test-db1' => 0,
 251                                         'test-db2' => 100,
 252                                 ]
 253                         ],
 254                         'serverTemplate' => [
 255                                 'dbname' => $wgDBname,
 256                                 'user' => $wgDBuser,
 257                                 'password' => $wgDBpassword,
 258                                 'type' => $wgDBtype,
 259                                 'dbDirectory' => $wgSQLiteDataDir,
 260                                 'flags' => DBO_DEFAULT
 261                         ],
 262                         'hostsByName' => [
 263                                 'test-db1' => $wgDBserver,
 264                                 'test-db2' => $wgDBserver,
 265                                 'test-db3' => $wgDBserver,
 266                                 'test-db4' => $wgDBserver
 267                         ],
 268                         'loadMonitorClass' => LoadMonitorNull::class
 269                 ] );
 270         }
 271
 272         /**
 273          * @covers \Wikimedia\Rdbms\ChronologyProtector
 274          */
 275         public function testChronologyProtector() {
 276                 $now = microtime( true );
 277
 278                 // (a) First HTTP request
 279                 $m1Pos = new MySQLMasterPos( 'db1034-bin.000976/843431247', $now );
 280                 $m2Pos = new MySQLMasterPos( 'db1064-bin.002400/794074907', $now );
 281
 282                 // Master DB 1
 283                 $mockDB1 = $this->getMockBuilder( DatabaseMysqli::class )
 284                         ->disableOriginalConstructor()
 285                         ->getMock();
 286                 $mockDB1->method( 'writesOrCallbacksPending' )->willReturn( true );
 287                 $mockDB1->method( 'lastDoneWrites' )->willReturn( $now );
 288                 $mockDB1->method( 'getMasterPos' )->willReturn( $m1Pos );
 289                 // Load balancer for master DB 1
 290                 $lb1 = $this->getMockBuilder( LoadBalancer::class )
 291                         ->disableOriginalConstructor()
 292                         ->getMock();
 293                 $lb1->method( 'getConnection' )->willReturn( $mockDB1 );
 294                 $lb1->method( 'getServerCount' )->willReturn( 2 );
 295                 $lb1->method( 'getAnyOpenConnection' )->willReturn( $mockDB1 );
 296                 $lb1->method( 'hasOrMadeRecentMasterChanges' )->will( $this->returnCallback(
 297                                 function () use ( $mockDB1 ) {
 298                                         $p = 0;
 299                                         $p |= call_user_func( [ $mockDB1, 'writesOrCallbacksPending' ] );
 300                                         $p |= call_user_func( [ $mockDB1, 'lastDoneWrites' ] );
 301
 302                                         return (bool)$p;
 303                                 }
 304                         ) );
 305                 $lb1->method( 'getMasterPos' )->willReturn( $m1Pos );
 306                 $lb1->method( 'getServerName' )->with( 0 )->willReturn( 'master1' );
 307                 // Master DB 2
 308                 $mockDB2 = $this->getMockBuilder( DatabaseMysqli::class )
 309                         ->disableOriginalConstructor()
 310                         ->getMock();
 311                 $mockDB2->method( 'writesOrCallbacksPending' )->willReturn( true );
 312                 $mockDB2->method( 'lastDoneWrites' )->willReturn( $now );
 313                 $mockDB2->method( 'getMasterPos' )->willReturn( $m2Pos );
 314                 // Load balancer for master DB 2
 315                 $lb2 = $this->getMockBuilder( LoadBalancer::class )
 316                         ->disableOriginalConstructor()
 317                         ->getMock();
 318                 $lb2->method( 'getConnection' )->willReturn( $mockDB2 );
 319                 $lb2->method( 'getServerCount' )->willReturn( 2 );
 320                 $lb2->method( 'getAnyOpenConnection' )->willReturn( $mockDB2 );
 321                 $lb2->method( 'hasOrMadeRecentMasterChanges' )->will( $this->returnCallback(
 322                         function () use ( $mockDB2 ) {
 323                                 $p = 0;
 324                                 $p |= call_user_func( [ $mockDB2, 'writesOrCallbacksPending' ] );
 325                                 $p |= call_user_func( [ $mockDB2, 'lastDoneWrites' ] );
 326
 327                                 return (bool)$p;
 328                         }
 329                 ) );
 330                 $lb2->method( 'getMasterPos' )->willReturn( $m2Pos );
 331                 $lb2->method( 'getServerName' )->with( 0 )->willReturn( 'master2' );
 332
 333                 $bag = new HashBagOStuff();
 334                 $cp = new ChronologyProtector(
 335                         $bag,
 336                         [
 337                                 'ip' => '127.0.0.1',
 338                                 'agent' => "Totally-Not-FireFox"
 339                         ]
 340                 );
 341
 342                 $mockDB1->expects( $this->exactly( 1 ) )->method( 'writesOrCallbacksPending' );
 343                 $mockDB1->expects( $this->exactly( 1 ) )->method( 'lastDoneWrites' );
 344                 $mockDB2->expects( $this->exactly( 1 ) )->method( 'writesOrCallbacksPending' );
 345                 $mockDB2->expects( $this->exactly( 1 ) )->method( 'lastDoneWrites' );
 346
 347                 // Nothing to wait for on first HTTP request start
 348                 $cp->initLB( $lb1 );
 349                 $cp->initLB( $lb2 );
 350                 // Record positions in stash on first HTTP request end
 351                 $cp->shutdownLB( $lb1 );
 352                 $cp->shutdownLB( $lb2 );
 353                 $cpIndex = null;
 354                 $cp->shutdown( null, 'sync', $cpIndex );
 355
 356                 $this->assertEquals( 1, $cpIndex, "CP write index set" );
 357
 358                 // (b) Second HTTP request
 359
 360                 // Load balancer for master DB 1
 361                 $lb1 = $this->getMockBuilder( LoadBalancer::class )
 362                         ->disableOriginalConstructor()
 363                         ->getMock();
 364                 $lb1->method( 'getServerCount' )->willReturn( 2 );
 365                 $lb1->method( 'getServerName' )->with( 0 )->willReturn( 'master1' );
 366                 $lb1->expects( $this->once() )
 367                         ->method( 'waitFor' )->with( $this->equalTo( $m1Pos ) );
 368                 // Load balancer for master DB 2
 369                 $lb2 = $this->getMockBuilder( LoadBalancer::class )
 370                         ->disableOriginalConstructor()
 371                         ->getMock();
 372                 $lb2->method( 'getServerCount' )->willReturn( 2 );
 373                 $lb2->method( 'getServerName' )->with( 0 )->willReturn( 'master2' );
 374                 $lb2->expects( $this->once() )
 375                         ->method( 'waitFor' )->with( $this->equalTo( $m2Pos ) );
 376
 377                 $cp = new ChronologyProtector(
 378                         $bag,
 379                         [
 380                                 'ip' => '127.0.0.1',
 381                                 'agent' => "Totally-Not-FireFox"
 382                         ],
 383                         $cpIndex
 384                 );
 385
 386                 // Wait for last positions to be reached on second HTTP request start
 387                 $cp->initLB( $lb1 );
 388                 $cp->initLB( $lb2 );
 389                 // Shutdown (nothing to record)
 390                 $cp->shutdownLB( $lb1 );
 391                 $cp->shutdownLB( $lb2 );
 392                 $cpIndex = null;
 393                 $cp->shutdown( null, 'sync', $cpIndex );
 394
 395                 $this->assertEquals( null, $cpIndex, "CP write index retained" );
 396         }
 397
 398         private function newLBFactoryMulti( array $baseOverride = [], array $serverOverride = [] ) {
 399                 global $wgDBserver, $wgDBuser, $wgDBpassword, $wgDBname, $wgDBprefix, $wgDBtype;
 400                 global $wgSQLiteDataDir;
 401
 402                 return new LBFactoryMulti( $baseOverride + [
 403                         'sectionsByDB' => [],
 404                         'sectionLoads' => [
 405                                 'DEFAULT' => [
 406                                         'test-db1' => 1,
 407                                 ],
 408                         ],
 409                         'serverTemplate' => $serverOverride + [
 410                                 'dbname' => $wgDBname,
 411                                 'tablePrefix' => $wgDBprefix,
 412                                 'user' => $wgDBuser,
 413                                 'password' => $wgDBpassword,
 414                                 'type' => $wgDBtype,
 415                                 'dbDirectory' => $wgSQLiteDataDir,
 416                                 'flags' => DBO_DEFAULT
 417                         ],
 418                         'hostsByName' => [
 419                                 'test-db1' => $wgDBserver,
 420                         ],
 421                         'loadMonitorClass' => LoadMonitorNull::class,
 422                         'localDomain' => new DatabaseDomain( $wgDBname, null, $wgDBprefix )
 423                 ] );
 424         }
 425
 426         public function testNiceDomains() {
 427                 global $wgDBname;
 428
 429                 if ( wfGetDB( DB_MASTER )->databasesAreIndependent() ) {
 430                         self::markTestSkipped( "Skipping tests about selecting DBs: not applicable" );
 431                         return;
 432                 }
 433
 434                 $factory = $this->newLBFactoryMulti(
 435                         [],
 436                         []
 437                 );
 438                 $lb = $factory->getMainLB();
 439
 440                 $db = $lb->getConnectionRef( DB_MASTER );
 441                 $this->assertEquals(
 442                         wfWikiID(),
 443                         $db->getDomainID()
 444                 );
 445                 unset( $db );
 446
 447                 /** @var Database $db */
 448                 $db = $lb->getConnection( DB_MASTER, [], '' );
 449
 450                 $this->assertEquals(
 451                         '',
 452                         $db->getDomainId(),
 453                         'Null domain ID handle used'
 454                 );
 455                 $this->assertEquals(
 456                         '',
 457                         $db->getDBname(),
 458                         'Null domain ID handle used'
 459                 );
 460                 $this->assertEquals(
 461                         '',
 462                         $db->tablePrefix(),
 463                         'Main domain ID handle used; prefix is empty though'
 464                 );
 465                 $this->assertEquals(
 466                         $this->quoteTable( $db, 'page' ),
 467                         $db->tableName( 'page' ),
 468                         "Correct full table name"
 469                 );
 470                 $this->assertEquals(
 471                         $this->quoteTable( $db, $wgDBname ) . '.' . $this->quoteTable( $db, 'page' ),
 472                         $db->tableName( "$wgDBname.page" ),
 473                         "Correct full table name"
 474                 );
 475                 $this->assertEquals(
 476                         $this->quoteTable( $db, 'nice_db' ) . '.' . $this->quoteTable( $db, 'page' ),
 477                         $db->tableName( 'nice_db.page' ),
 478                         "Correct full table name"
 479                 );
 480
 481                 $lb->reuseConnection( $db ); // don't care
 482
 483                 $db = $lb->getConnection( DB_MASTER ); // local domain connection
 484                 $factory->setDomainPrefix( 'my_' );
 485
 486                 $this->assertEquals( $wgDBname, $db->getDBname() );
 487                 $this->assertEquals(
 488                         "$wgDBname-my_",
 489                         $db->getDomainID()
 490                 );
 491                 $this->assertEquals(
 492                         $this->quoteTable( $db, 'my_page' ),
 493                         $db->tableName( 'page' ),
 494                         "Correct full table name"
 495                 );
 496                 $this->assertEquals(
 497                         $this->quoteTable( $db, 'other_nice_db' ) . '.' . $this->quoteTable( $db, 'page' ),
 498                         $db->tableName( 'other_nice_db.page' ),
 499                         "Correct full table name"
 500                 );
 501
 502                 $factory->closeAll();
 503                 $factory->destroy();
 504         }
 505
 506         public function testTrickyDomain() {
 507                 global $wgDBname;
 508
 509                 if ( wfGetDB( DB_MASTER )->databasesAreIndependent() ) {
 510                         self::markTestSkipped( "Skipping tests about selecting DBs: not applicable" );
 511                         return;
 512                 }
 513
 514                 $dbname = 'unittest-domain'; // explodes if DB is selected
 515                 $factory = $this->newLBFactoryMulti(
 516                         [ 'localDomain' => ( new DatabaseDomain( $dbname, null, '' ) )->getId() ],
 517                         [
 518                                 'dbName' => 'do_not_select_me' // explodes if DB is selected
 519                         ]
 520                 );
 521                 $lb = $factory->getMainLB();
 522                 /** @var Database $db */
 523                 $db = $lb->getConnection( DB_MASTER, [], '' );
 524
 525                 $this->assertEquals( '', $db->getDomainID(), "Null domain used" );
 526
 527                 $this->assertEquals(
 528                         $this->quoteTable( $db, 'page' ),
 529                         $db->tableName( 'page' ),
 530                         "Correct full table name"
 531                 );
 532
 533                 $this->assertEquals(
 534                         $this->quoteTable( $db, $dbname ) . '.' . $this->quoteTable( $db, 'page' ),
 535                         $db->tableName( "$dbname.page" ),
 536                         "Correct full table name"
 537                 );
 538
 539                 $this->assertEquals(
 540                         $this->quoteTable( $db, 'nice_db' ) . '.' . $this->quoteTable( $db, 'page' ),
 541                         $db->tableName( 'nice_db.page' ),
 542                         "Correct full table name"
 543                 );
 544
 545                 $lb->reuseConnection( $db ); // don't care
 546
 547                 $factory->setDomainPrefix( 'my_' );
 548                 $db = $lb->getConnection( DB_MASTER, [], "$wgDBname-my_" );
 549
 550                 $this->assertEquals(
 551                         $this->quoteTable( $db, 'my_page' ),
 552                         $db->tableName( 'page' ),
 553                         "Correct full table name"
 554                 );
 555                 $this->assertEquals(
 556                         $this->quoteTable( $db, 'other_nice_db' ) . '.' . $this->quoteTable( $db, 'page' ),
 557                         $db->tableName( 'other_nice_db.page' ),
 558                         "Correct full table name"
 559                 );
 560                 $this->assertEquals(
 561                         $this->quoteTable( $db, 'garbage-db' ) . '.' . $this->quoteTable( $db, 'page' ),
 562                         $db->tableName( 'garbage-db.page' ),
 563                         "Correct full table name"
 564                 );
 565
 566                 $lb->reuseConnection( $db ); // don't care
 567
 568                 $factory->closeAll();
 569                 $factory->destroy();
 570         }
 571
 572         public function testInvalidSelectDB() {
 573                 $dbname = 'unittest-domain'; // explodes if DB is selected
 574                 $factory = $this->newLBFactoryMulti(
 575                         [ 'localDomain' => ( new DatabaseDomain( $dbname, null, '' ) )->getId() ],
 576                         [
 577                                 'dbName' => 'do_not_select_me' // explodes if DB is selected
 578                         ]
 579                 );
 580                 $lb = $factory->getMainLB();
 581                 /** @var Database $db */
 582                 $db = $lb->getConnection( DB_MASTER, [], '' );
 583
 584                 if ( $db->getType() === 'sqlite' ) {
 585                         $this->assertFalse( $db->selectDB( 'garbage-db' ) );
 586                 } elseif ( $db->databasesAreIndependent() ) {
 587                         try {
 588                                 $e = null;
 589                                 $db->selectDB( 'garbage-db' );
 590                         } catch ( \Wikimedia\Rdbms\DBConnectionError $e ) {
 591                                 // expected
 592                         }
 593                         $this->assertInstanceOf( \Wikimedia\Rdbms\DBConnectionError::class, $e );
 594                         $this->assertFalse( $db->isOpen() );
 595                 } else {
 596                         \Wikimedia\suppressWarnings();
 597                         $this->assertFalse( $db->selectDB( 'garbage-db' ) );
 598                         \Wikimedia\restoreWarnings();
 599                 }
 600         }
 601
 602         private function quoteTable( Database $db, $table ) {
 603                 if ( $db->getType() === 'sqlite' ) {
 604                         return $table;
 605                 } else {
 606                         return $db->addIdentifierQuotes( $table );
 607                 }
 608         }
 609 }