tests/testHelpers.inc

   1 <?php
   2 /**
   3  * Recording for passing/failing tests.
   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  * @ingroup Testing
  22  */
  23
  24 /**
  25  * Interface to record parser test results.
  26  *
  27  * The ITestRecorder is a very simple interface to record the result of
  28  * MediaWiki parser tests. One should call start() before running the
  29  * full parser tests and end() once all the tests have been finished.
  30  * After each test, you should use record() to keep track of your tests
  31  * results. Finally, report() is used to generate a summary of your
  32  * test run, one could dump it to the console for human consumption or
  33  * register the result in a database for tracking purposes.
  34  *
  35  * @since 1.22
  36  */
  37 interface ITestRecorder {
  38
  39         /**
  40          * Called at beginning of the parser test run
  41          */
  42         public function start();
  43
  44         /**
  45          * Called after each test
  46          * @param string $test
  47          * @param integer $subtest
  48          * @param bool $result
  49          */
  50         public function record( $test, $subtest, $result );
  51
  52         /**
  53          * Called before finishing the test run
  54          */
  55         public function report();
  56
  57         /**
  58          * Called at the end of the parser test run
  59          */
  60         public function end();
  61
  62 }
  63
  64 class TestRecorder implements ITestRecorder {
  65         public $parent;
  66         public $term;
  67
  68         function __construct( $parent ) {
  69                 $this->parent = $parent;
  70                 $this->term = $parent->term;
  71         }
  72
  73         function start() {
  74                 $this->total = 0;
  75                 $this->success = 0;
  76         }
  77
  78         function record( $test, $subtest, $result ) {
  79                 $this->total++;
  80                 $this->success += ( $result ? 1 : 0 );
  81         }
  82
  83         function end() {
  84                 // dummy
  85         }
  86
  87         function report() {
  88                 if ( $this->total > 0 ) {
  89                         $this->reportPercentage( $this->success, $this->total );
  90                 } else {
  91                         throw new MWException( "No tests found.\n" );
  92                 }
  93         }
  94
  95         function reportPercentage( $success, $total ) {
  96                 $ratio = wfPercent( 100 * $success / $total );
  97                 print $this->term->color( 1 ) . "Passed $success of $total tests ($ratio)... ";
  98
  99                 if ( $success == $total ) {
 100                         print $this->term->color( 32 ) . "ALL TESTS PASSED!";
 101                 } else {
 102                         $failed = $total - $success;
 103                         print $this->term->color( 31 ) . "$failed tests failed!";
 104                 }
 105
 106                 print $this->term->reset() . "\n";
 107
 108                 return ( $success == $total );
 109         }
 110 }
 111
 112 class DbTestPreviewer extends TestRecorder {
 113         protected $lb; // /< Database load balancer
 114         protected $db; // /< Database connection to the main DB
 115         protected $curRun; // /< run ID number for the current run
 116         protected $prevRun; // /< run ID number for the previous run, if any
 117         protected $results; // /< Result array
 118
 119         /**
 120          * This should be called before the table prefix is changed
 121          * @param TestRecorder $parent
 122          */
 123         function __construct( $parent ) {
 124                 parent::__construct( $parent );
 125
 126                 $this->lb = wfGetLBFactory()->newMainLB();
 127                 // This connection will have the wiki's table prefix, not parsertest_
 128                 $this->db = $this->lb->getConnection( DB_MASTER );
 129         }
 130
 131         /**
 132          * Set up result recording; insert a record for the run with the date
 133          * and all that fun stuff
 134          */
 135         function start() {
 136                 parent::start();
 137
 138                 if ( !$this->db->tableExists( 'testrun', __METHOD__ )
 139                         || !$this->db->tableExists( 'testitem', __METHOD__ )
 140                 ) {
 141                         print "WARNING> `testrun` table not found in database.\n";
 142                         $this->prevRun = false;
 143                 } else {
 144                         // We'll make comparisons against the previous run later...
 145                         $this->prevRun = $this->db->selectField( 'testrun', 'MAX(tr_id)' );
 146                 }
 147
 148                 $this->results = [];
 149         }
 150
 151         function getName( $test, $subtest ) {
 152                 if ( $subtest ) {
 153                         return "$test subtest #$subtest";
 154                 } else {
 155                         return $test;
 156                 }
 157         }
 158
 159         function record( $test, $subtest, $result ) {
 160                 parent::record( $test, $subtest, $result );
 161                 $this->results[ $this->getName( $test, $subtest ) ] = $result;
 162         }
 163
 164         function report() {
 165                 if ( $this->prevRun ) {
 166                         // f = fail, p = pass, n = nonexistent
 167                         // codes show before then after
 168                         $table = [
 169                                 'fp' => 'previously failing test(s) now PASSING! :)',
 170                                 'pn' => 'previously PASSING test(s) removed o_O',
 171                                 'np' => 'new PASSING test(s) :)',
 172
 173                                 'pf' => 'previously passing test(s) now FAILING! :(',
 174                                 'fn' => 'previously FAILING test(s) removed O_o',
 175                                 'nf' => 'new FAILING test(s) :(',
 176                                 'ff' => 'still FAILING test(s) :(',
 177                         ];
 178
 179                         $prevResults = [];
 180
 181                         $res = $this->db->select( 'testitem', [ 'ti_name', 'ti_success' ],
 182                                 [ 'ti_run' => $this->prevRun ], __METHOD__ );
 183
 184                         foreach ( $res as $row ) {
 185                                 if ( !$this->parent->regex
 186                                         || preg_match( "/{$this->parent->regex}/i", $row->ti_name )
 187                                 ) {
 188                                         $prevResults[$row->ti_name] = $row->ti_success;
 189                                 }
 190                         }
 191
 192                         $combined = array_keys( $this->results + $prevResults );
 193
 194                         # Determine breakdown by change type
 195                         $breakdown = [];
 196                         foreach ( $combined as $test ) {
 197                                 if ( !isset( $prevResults[$test] ) ) {
 198                                         $before = 'n';
 199                                 } elseif ( $prevResults[$test] == 1 ) {
 200                                         $before = 'p';
 201                                 } else /* if ( $prevResults[$test] == 0 )*/ {
 202                                         $before = 'f';
 203                                 }
 204
 205                                 if ( !isset( $this->results[$test] ) ) {
 206                                         $after = 'n';
 207                                 } elseif ( $this->results[$test] == 1 ) {
 208                                         $after = 'p';
 209                                 } else /*if ( $this->results[$test] == 0 ) */ {
 210                                         $after = 'f';
 211                                 }
 212
 213                                 $code = $before . $after;
 214
 215                                 if ( isset( $table[$code] ) ) {
 216                                         $breakdown[$code][$test] = $this->getTestStatusInfo( $test, $after );
 217                                 }
 218                         }
 219
 220                         # Write out results
 221                         foreach ( $table as $code => $label ) {
 222                                 if ( !empty( $breakdown[$code] ) ) {
 223                                         $count = count( $breakdown[$code] );
 224                                         printf( "\n%4d %s\n", $count, $label );
 225
 226                                         foreach ( $breakdown[$code] as $differing_test_name => $statusInfo ) {
 227                                                 print "      * $differing_test_name  [$statusInfo]\n";
 228                                         }
 229                                 }
 230                         }
 231                 } else {
 232                         print "No previous test runs to compare against.\n";
 233                 }
 234
 235                 print "\n";
 236                 parent::report();
 237         }
 238
 239         /**
 240          * Returns a string giving information about when a test last had a status change.
 241          * Could help to track down when regressions were introduced, as distinct from tests
 242          * which have never passed (which are more change requests than regressions).
 243          * @param string $testname
 244          * @param string $after
 245          * @return string
 246          */
 247         private function getTestStatusInfo( $testname, $after ) {
 248                 // If we're looking at a test that has just been removed, then say when it first appeared.
 249                 if ( $after == 'n' ) {
 250                         $changedRun = $this->db->selectField( 'testitem',
 251                                 'MIN(ti_run)',
 252                                 [ 'ti_name' => $testname ],
 253                                 __METHOD__ );
 254                         $appear = $this->db->selectRow( 'testrun',
 255                                 [ 'tr_date', 'tr_mw_version' ],
 256                                 [ 'tr_id' => $changedRun ],
 257                                 __METHOD__ );
 258
 259                         return "First recorded appearance: "
 260                                 . date( "d-M-Y H:i:s", strtotime( $appear->tr_date ) )
 261                                 . ", " . $appear->tr_mw_version;
 262                 }
 263
 264                 // Otherwise, this test has previous recorded results.
 265                 // See when this test last had a different result to what we're seeing now.
 266                 $conds = [
 267                         'ti_name' => $testname,
 268                         'ti_success' => ( $after == 'f' ? "1" : "0" ) ];
 269
 270                 if ( $this->curRun ) {
 271                         $conds[] = "ti_run != " . $this->db->addQuotes( $this->curRun );
 272                 }
 273
 274                 $changedRun = $this->db->selectField( 'testitem', 'MAX(ti_run)', $conds, __METHOD__ );
 275
 276                 // If no record of ever having had a different result.
 277                 if ( is_null( $changedRun ) ) {
 278                         if ( $after == "f" ) {
 279                                 return "Has never passed";
 280                         } else {
 281                                 return "Has never failed";
 282                         }
 283                 }
 284
 285                 // Otherwise, we're looking at a test whose status has changed.
 286                 // (i.e. it used to work, but now doesn't; or used to fail, but is now fixed.)
 287                 // In this situation, give as much info as we can as to when it changed status.
 288                 $pre = $this->db->selectRow( 'testrun',
 289                         [ 'tr_date', 'tr_mw_version' ],
 290                         [ 'tr_id' => $changedRun ],
 291                         __METHOD__ );
 292                 $post = $this->db->selectRow( 'testrun',
 293                         [ 'tr_date', 'tr_mw_version' ],
 294                         [ "tr_id > " . $this->db->addQuotes( $changedRun ) ],
 295                         __METHOD__,
 296                         [ "LIMIT" => 1, "ORDER BY" => 'tr_id' ]
 297                 );
 298
 299                 if ( $post ) {
 300                         $postDate = date( "d-M-Y H:i:s", strtotime( $post->tr_date ) ) . ", {$post->tr_mw_version}";
 301                 } else {
 302                         $postDate = 'now';
 303                 }
 304
 305                 return ( $after == "f" ? "Introduced" : "Fixed" ) . " between "
 306                         . date( "d-M-Y H:i:s", strtotime( $pre->tr_date ) ) . ", " . $pre->tr_mw_version
 307                         . " and $postDate";
 308         }
 309
 310         /**
 311          * Close the DB connection
 312          */
 313         function end() {
 314                 $this->lb->closeAll();
 315                 parent::end();
 316         }
 317 }
 318
 319 class DbTestRecorder extends DbTestPreviewer {
 320         public $version;
 321
 322         /**
 323          * Set up result recording; insert a record for the run with the date
 324          * and all that fun stuff
 325          */
 326         function start() {
 327                 $this->db->begin( __METHOD__ );
 328
 329                 if ( !$this->db->tableExists( 'testrun' )
 330                         || !$this->db->tableExists( 'testitem' )
 331                 ) {
 332                         print "WARNING> `testrun` table not found in database. Trying to create table.\n";
 333                         $this->db->sourceFile( $this->db->patchPath( 'patch-testrun.sql' ) );
 334                         echo "OK, resuming.\n";
 335                 }
 336
 337                 parent::start();
 338
 339                 $this->db->insert( 'testrun',
 340                         [
 341                                 'tr_date' => $this->db->timestamp(),
 342                                 'tr_mw_version' => $this->version,
 343                                 'tr_php_version' => PHP_VERSION,
 344                                 'tr_db_version' => $this->db->getServerVersion(),
 345                                 'tr_uname' => php_uname()
 346                         ],
 347                         __METHOD__ );
 348                 if ( $this->db->getType() === 'postgres' ) {
 349                         $this->curRun = $this->db->currentSequenceValue( 'testrun_id_seq' );
 350                 } else {
 351                         $this->curRun = $this->db->insertId();
 352                 }
 353         }
 354
 355         /**
 356          * Record an individual test item's success or failure to the db
 357          *
 358          * @param string $test
 359          * @param bool $result
 360          */
 361         function record( $test, $subtest, $result ) {
 362                 parent::record( $test, $subtest, $result );
 363
 364                 $this->db->insert( 'testitem',
 365                         [
 366                                 'ti_run' => $this->curRun,
 367                                 'ti_name' => $this->getName( $test, $subtest ),
 368                                 'ti_success' => $result ? 1 : 0,
 369                         ],
 370                         __METHOD__ );
 371         }
 372
 373         /**
 374          * Commit transaction and clean up for result recording
 375          */
 376         function end() {
 377                 $this->db->commit( __METHOD__ );
 378                 parent::end();
 379         }
 380 }
 381
 382 class TestFileIterator implements Iterator {
 383         private $file;
 384         private $fh;
 385         /**
 386          * @var ParserTest|MediaWikiParserTest An instance of ParserTest (parserTests.php)
 387          *  or MediaWikiParserTest (phpunit)
 388          */
 389         private $parserTest;
 390         private $index = 0;
 391         private $test;
 392         private $section = null;
 393         /** String|null: current test section being analyzed */
 394         private $sectionData = [];
 395         private $lineNum;
 396         private $eof;
 397         # Create a fake parser tests which never run anything unless
 398         # asked to do so. This will avoid running hooks for a disabled test
 399         private $delayedParserTest;
 400         private $nextSubTest = 0;
 401
 402         function __construct( $file, $parserTest ) {
 403                 $this->file = $file;
 404                 $this->fh = fopen( $this->file, "rt" );
 405
 406                 if ( !$this->fh ) {
 407                         throw new MWException( "Couldn't open file '$file'\n" );
 408                 }
 409
 410                 $this->parserTest = $parserTest;
 411                 $this->delayedParserTest = new DelayedParserTest();
 412
 413                 $this->lineNum = $this->index = 0;
 414         }
 415
 416         function rewind() {
 417                 if ( fseek( $this->fh, 0 ) ) {
 418                         throw new MWException( "Couldn't fseek to the start of '$this->file'\n" );
 419                 }
 420
 421                 $this->index = -1;
 422                 $this->lineNum = 0;
 423                 $this->eof = false;
 424                 $this->next();
 425
 426                 return true;
 427         }
 428
 429         function current() {
 430                 return $this->test;
 431         }
 432
 433         function key() {
 434                 return $this->index;
 435         }
 436
 437         function next() {
 438                 if ( $this->readNextTest() ) {
 439                         $this->index++;
 440                         return true;
 441                 } else {
 442                         $this->eof = true;
 443                 }
 444         }
 445
 446         function valid() {
 447                 return $this->eof != true;
 448         }
 449
 450         function setupCurrentTest() {
 451                 // "input" and "result" are old section names allowed
 452                 // for backwards-compatibility.
 453                 $input = $this->checkSection( [ 'wikitext', 'input' ], false );
 454                 $result = $this->checkSection( [ 'html/php', 'html/*', 'html', 'result' ], false );
 455                 // some tests have "with tidy" and "without tidy" variants
 456                 $tidy = $this->checkSection( [ 'html/php+tidy', 'html+tidy' ], false );
 457                 if ( $tidy != false ) {
 458                         if ( $this->nextSubTest == 0 ) {
 459                                 if ( $result != false ) {
 460                                         $this->nextSubTest = 1; // rerun non-tidy variant later
 461                                 }
 462                                 $result = $tidy;
 463                         } else {
 464                                 $this->nextSubTest = 0; // go on to next test after this
 465                                 $tidy = false;
 466                         }
 467                 }
 468
 469                 if ( !isset( $this->sectionData['options'] ) ) {
 470                         $this->sectionData['options'] = '';
 471                 }
 472
 473                 if ( !isset( $this->sectionData['config'] ) ) {
 474                         $this->sectionData['config'] = '';
 475                 }
 476
 477                 $isDisabled = preg_match( '/\\bdisabled\\b/i', $this->sectionData['options'] ) &&
 478                         !$this->parserTest->runDisabled;
 479                 $isParsoidOnly = preg_match( '/\\bparsoid\\b/i', $this->sectionData['options'] ) &&
 480                         $result == 'html' &&
 481                         !$this->parserTest->runParsoid;
 482                 $isFiltered = !preg_match( "/" . $this->parserTest->regex . "/i", $this->sectionData['test'] );
 483                 if ( $input == false || $result == false || $isDisabled || $isParsoidOnly || $isFiltered ) {
 484                         # disabled test
 485                         return false;
 486                 }
 487
 488                 # We are really going to run the test, run pending hooks and hooks function
 489                 wfDebug( __METHOD__ . " unleashing delayed test for: {$this->sectionData['test']}" );
 490                 $hooksResult = $this->delayedParserTest->unleash( $this->parserTest );
 491                 if ( !$hooksResult ) {
 492                         # Some hook reported an issue. Abort.
 493                         throw new MWException( "Problem running requested parser hook from the test file" );
 494                 }
 495
 496                 $this->test = [
 497                         'test' => ParserTest::chomp( $this->sectionData['test'] ),
 498                         'subtest' => $this->nextSubTest,
 499                         'input' => ParserTest::chomp( $this->sectionData[$input] ),
 500                         'result' => ParserTest::chomp( $this->sectionData[$result] ),
 501                         'options' => ParserTest::chomp( $this->sectionData['options'] ),
 502                         'config' => ParserTest::chomp( $this->sectionData['config'] ),
 503                 ];
 504                 if ( $tidy != false ) {
 505                         $this->test['options'] .= " tidy";
 506                 }
 507                 return true;
 508         }
 509
 510         function readNextTest() {
 511                 # Run additional subtests of previous test
 512                 while ( $this->nextSubTest > 0 ) {
 513                         if ( $this->setupCurrentTest() ) {
 514                                 return true;
 515                         }
 516                 }
 517
 518                 $this->clearSection();
 519                 # Reset hooks for the delayed test object
 520                 $this->delayedParserTest->reset();
 521
 522                 while ( false !== ( $line = fgets( $this->fh ) ) ) {
 523                         $this->lineNum++;
 524                         $matches = [];
 525
 526                         if ( preg_match( '/^!!\s*(\S+)/', $line, $matches ) ) {
 527                                 $this->section = strtolower( $matches[1] );
 528
 529                                 if ( $this->section == 'endarticle' ) {
 530                                         $this->checkSection( 'text' );
 531                                         $this->checkSection( 'article' );
 532
 533                                         $this->parserTest->addArticle(
 534                                                 ParserTest::chomp( $this->sectionData['article'] ),
 535                                                 $this->sectionData['text'], $this->lineNum );
 536
 537                                         $this->clearSection();
 538
 539                                         continue;
 540                                 }
 541
 542                                 if ( $this->section == 'endhooks' ) {
 543                                         $this->checkSection( 'hooks' );
 544
 545                                         foreach ( explode( "\n", $this->sectionData['hooks'] ) as $line ) {
 546                                                 $line = trim( $line );
 547
 548                                                 if ( $line ) {
 549                                                         $this->delayedParserTest->requireHook( $line );
 550                                                 }
 551                                         }
 552
 553                                         $this->clearSection();
 554
 555                                         continue;
 556                                 }
 557
 558                                 if ( $this->section == 'endfunctionhooks' ) {
 559                                         $this->checkSection( 'functionhooks' );
 560
 561                                         foreach ( explode( "\n", $this->sectionData['functionhooks'] ) as $line ) {
 562                                                 $line = trim( $line );
 563
 564                                                 if ( $line ) {
 565                                                         $this->delayedParserTest->requireFunctionHook( $line );
 566                                                 }
 567                                         }
 568
 569                                         $this->clearSection();
 570
 571                                         continue;
 572                                 }
 573
 574                                 if ( $this->section == 'endtransparenthooks' ) {
 575                                         $this->checkSection( 'transparenthooks' );
 576
 577                                         foreach ( explode( "\n", $this->sectionData['transparenthooks'] ) as $line ) {
 578                                                 $line = trim( $line );
 579
 580                                                 if ( $line ) {
 581                                                         $this->delayedParserTest->requireTransparentHook( $line );
 582                                                 }
 583                                         }
 584
 585                                         $this->clearSection();
 586
 587                                         continue;
 588                                 }
 589
 590                                 if ( $this->section == 'end' ) {
 591                                         $this->checkSection( 'test' );
 592                                         do {
 593                                                 if ( $this->setupCurrentTest() ) {
 594                                                         return true;
 595                                                 }
 596                                         } while ( $this->nextSubTest > 0 );
 597                                         # go on to next test (since this was disabled)
 598                                         $this->clearSection();
 599                                         $this->delayedParserTest->reset();
 600                                         continue;
 601                                 }
 602
 603                                 if ( isset( $this->sectionData[$this->section] ) ) {
 604                                         throw new MWException( "duplicate section '$this->section' "
 605                                                 . "at line {$this->lineNum} of $this->file\n" );
 606                                 }
 607
 608                                 $this->sectionData[$this->section] = '';
 609
 610                                 continue;
 611                         }
 612
 613                         if ( $this->section ) {
 614                                 $this->sectionData[$this->section] .= $line;
 615                         }
 616                 }
 617
 618                 return false;
 619         }
 620
 621         /**
 622          * Clear section name and its data
 623          */
 624         private function clearSection() {
 625                 $this->sectionData = [];
 626                 $this->section = null;
 627
 628         }
 629
 630         /**
 631          * Verify the current section data has some value for the given token
 632          * name(s) (first parameter).
 633          * Throw an exception if it is not set, referencing current section
 634          * and adding the current file name and line number
 635          *
 636          * @param string|array $tokens Expected token(s) that should have been
 637          * mentioned before closing this section
 638          * @param bool $fatal True iff an exception should be thrown if
 639          * the section is not found.
 640          * @return bool|string
 641          * @throws MWException
 642          */
 643         private function checkSection( $tokens, $fatal = true ) {
 644                 if ( is_null( $this->section ) ) {
 645                         throw new MWException( __METHOD__ . " can not verify a null section!\n" );
 646                 }
 647                 if ( !is_array( $tokens ) ) {
 648                         $tokens = [ $tokens ];
 649                 }
 650                 if ( count( $tokens ) == 0 ) {
 651                         throw new MWException( __METHOD__ . " can not verify zero sections!\n" );
 652                 }
 653
 654                 $data = $this->sectionData;
 655                 $tokens = array_filter( $tokens, function ( $token ) use ( $data ) {
 656                         return isset( $data[$token] );
 657                 } );
 658
 659                 if ( count( $tokens ) == 0 ) {
 660                         if ( !$fatal ) {
 661                                 return false;
 662                         }
 663                         throw new MWException( sprintf(
 664                                 "'%s' without '%s' at line %s of %s\n",
 665                                 $this->section,
 666                                 implode( ',', $tokens ),
 667                                 $this->lineNum,
 668                                 $this->file
 669                         ) );
 670                 }
 671                 if ( count( $tokens ) > 1 ) {
 672                         throw new MWException( sprintf(
 673                                 "'%s' with unexpected tokens '%s' at line %s of %s\n",
 674                                 $this->section,
 675                                 implode( ',', $tokens ),
 676                                 $this->lineNum,
 677                                 $this->file
 678                         ) );
 679                 }
 680
 681                 return array_values( $tokens )[0];
 682         }
 683 }
 684
 685 /**
 686  * An iterator for use as a phpunit data provider. Provides the test arguments
 687  * in the order expected by NewParserTest::testParserTest().
 688  */
 689 class TestFileDataProvider extends TestFileIterator {
 690         function current() {
 691                 $test = parent::current();
 692                 if ( $test ) {
 693                         return [
 694                                 $test['test'],
 695                                 $test['input'],
 696                                 $test['result'],
 697                                 $test['options'],
 698                                 $test['config'],
 699                         ];
 700                 } else {
 701                         return $test;
 702                 }
 703         }
 704 }
 705
 706 /**
 707  * A class to delay execution of a parser test hooks.
 708  */
 709 class DelayedParserTest {
 710
 711         /** Initialized on construction */
 712         private $hooks;
 713         private $fnHooks;
 714         private $transparentHooks;
 715
 716         public function __construct() {
 717                 $this->reset();
 718         }
 719
 720         /**
 721          * Init/reset or forgot about the current delayed test.
 722          * Call to this will erase any hooks function that were pending.
 723          */
 724         public function reset() {
 725                 $this->hooks = [];
 726                 $this->fnHooks = [];
 727                 $this->transparentHooks = [];
 728         }
 729
 730         /**
 731          * Called whenever we actually want to run the hook.
 732          * Should be the case if we found the parserTest is not disabled
 733          * @param ParserTest|NewParserTest $parserTest
 734          * @return bool
 735          * @throws MWException
 736          */
 737         public function unleash( &$parserTest ) {
 738                 if ( !( $parserTest instanceof ParserTest || $parserTest instanceof NewParserTest ) ) {
 739                         throw new MWException( __METHOD__ . " must be passed an instance of ParserTest or "
 740                                 . "NewParserTest classes\n" );
 741                 }
 742
 743                 # Trigger delayed hooks. Any failure will make us abort
 744                 foreach ( $this->hooks as $hook ) {
 745                         $ret = $parserTest->requireHook( $hook );
 746                         if ( !$ret ) {
 747                                 return false;
 748                         }
 749                 }
 750
 751                 # Trigger delayed function hooks. Any failure will make us abort
 752                 foreach ( $this->fnHooks as $fnHook ) {
 753                         $ret = $parserTest->requireFunctionHook( $fnHook );
 754                         if ( !$ret ) {
 755                                 return false;
 756                         }
 757                 }
 758
 759                 # Trigger delayed transparent hooks. Any failure will make us abort
 760                 foreach ( $this->transparentHooks as $hook ) {
 761                         $ret = $parserTest->requireTransparentHook( $hook );
 762                         if ( !$ret ) {
 763                                 return false;
 764                         }
 765                 }
 766
 767                 # Delayed execution was successful.
 768                 return true;
 769         }
 770
 771         /**
 772          * Similar to ParserTest object but does not run anything
 773          * Use unleash() to really execute the hook
 774          * @param string $hook
 775          */
 776         public function requireHook( $hook ) {
 777                 $this->hooks[] = $hook;
 778         }
 779
 780         /**
 781          * Similar to ParserTest object but does not run anything
 782          * Use unleash() to really execute the hook function
 783          * @param string $fnHook
 784          */
 785         public function requireFunctionHook( $fnHook ) {
 786                 $this->fnHooks[] = $fnHook;
 787         }
 788
 789         /**
 790          * Similar to ParserTest object but does not run anything
 791          * Use unleash() to really execute the hook function
 792          * @param string $hook
 793          */
 794         public function requireTransparentHook( $hook ) {
 795                 $this->transparentHooks[] = $hook;
 796         }
 797
 798 }
 799
 800 /**
 801  * Initialize and detect the DjVu files support
 802  */
 803 class DjVuSupport {
 804
 805         /**
 806          * Initialises DjVu tools global with default values
 807          */
 808         public function __construct() {
 809                 global $wgDjvuRenderer, $wgDjvuDump, $wgDjvuToXML, $wgFileExtensions, $wgDjvuTxt;
 810
 811                 $wgDjvuRenderer = $wgDjvuRenderer ? $wgDjvuRenderer : '/usr/bin/ddjvu';
 812                 $wgDjvuDump = $wgDjvuDump ? $wgDjvuDump : '/usr/bin/djvudump';
 813                 $wgDjvuToXML = $wgDjvuToXML ? $wgDjvuToXML : '/usr/bin/djvutoxml';
 814                 $wgDjvuTxt = $wgDjvuTxt ? $wgDjvuTxt : '/usr/bin/djvutxt';
 815
 816                 if ( !in_array( 'djvu', $wgFileExtensions ) ) {
 817                         $wgFileExtensions[] = 'djvu';
 818                 }
 819         }
 820
 821         /**
 822          * Returns true if the DjVu tools are usable
 823          *
 824          * @return bool
 825          */
 826         public function isEnabled() {
 827                 global $wgDjvuRenderer, $wgDjvuDump, $wgDjvuToXML, $wgDjvuTxt;
 828
 829                 return is_executable( $wgDjvuRenderer )
 830                         && is_executable( $wgDjvuDump )
 831                         && is_executable( $wgDjvuToXML )
 832                         && is_executable( $wgDjvuTxt );
 833         }
 834 }
 835
 836 /**
 837  * Initialize and detect the tidy support
 838  */
 839 class TidySupport {
 840         private $internalTidy;
 841         private $externalTidy;
 842
 843         /**
 844          * Determine if there is a usable tidy.
 845          */
 846         public function __construct() {
 847                 global $wgTidyBin;
 848
 849                 $this->internalTidy = extension_loaded( 'tidy' ) &&
 850                         class_exists( 'tidy' ) && !wfIsHHVM();
 851
 852                 $this->externalTidy = is_executable( $wgTidyBin ) ||
 853                         Installer::locateExecutableInDefaultPaths( [ $wgTidyBin ] )
 854                         !== false;
 855         }
 856
 857         /**
 858          * Returns true if we should use internal tidy.
 859          *
 860          * @return bool
 861          */
 862         public function isInternal() {
 863                 return $this->internalTidy;
 864         }
 865
 866         /**
 867          * Returns true if tidy is usable
 868          *
 869          * @return bool
 870          */
 871         public function isEnabled() {
 872                 return $this->internalTidy || $this->externalTidy;
 873         }
 874 }