maintenance/parserTests.php

   1 <?php
   2 # Copyright (C) 2004 Brion Vibber <brion@pobox.com>
   3 # http://www.mediawiki.org/
   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 # 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18 # http://www.gnu.org/copyleft/gpl.html
  19
  20 /**
  21  * @todo Make this more independent of the configuration (and if possible the database)
  22  * @todo document
  23  * @package MediaWiki
  24  * @subpackage Maintenance
  25  */
  26
  27 /** */
  28 $optionsWithArgs = array('regex');
  29
  30 require_once( 'commandLine.inc' );
  31 require_once( 'languages/LanguageUtf8.php' );
  32
  33 /** */
  34 class ParserTest {
  35         /**
  36          * boolean $color whereas output should be colorized
  37          * @access private
  38          */
  39         var $color;
  40
  41         /**
  42          * boolean $lightcolor whereas output should use light colors
  43          * @access private
  44          */
  45         var $lightcolor;
  46
  47         /**
  48          * Sets terminal colorization and diff/quick modes depending on OS and
  49          * command-line options (--color and --quick).
  50          *
  51          * @access public
  52          */
  53         function ParserTest() {
  54                 global $options;
  55                 $this->lightcolor = false;
  56                 if( isset( $_SERVER['argv'] ) && in_array( '--color', $_SERVER['argv'] ) ) {
  57                         $this->color = true;
  58                 } elseif( isset( $_SERVER['argv'] ) && in_array( '--color=yes', $_SERVER['argv'] ) ) {
  59                         $this->color = true;
  60                 } elseif( isset( $_SERVER['argv'] ) && in_array( '--color=light', $_SERVER['argv'] ) ) {
  61                         $this->color = true;
  62                         $this->lightcolor = true;
  63                 } elseif( isset( $_SERVER['argv'] ) && in_array( '--color=no', $_SERVER['argv'] ) ) {
  64                         $this->color = false;
  65                 } elseif( wfIsWindows() ) {
  66                         $this->color = false;
  67                 } else {
  68                         # Only colorize output if stdout is a terminal.
  69                         $this->color = posix_isatty(1);
  70                 }
  71
  72                 if( isset( $_SERVER['argv'] ) && in_array( '--quick', $_SERVER['argv'] ) ) {
  73                         $this->showDiffs = false;
  74                 } else {
  75                         $this->showDiffs = true;
  76                 }
  77
  78                 if (isset($options['regex'])) {
  79                         $this->regex = $options['regex'];
  80                 }
  81                 else {
  82                         # Matches anything
  83                         $this->regex = '';
  84                 }
  85         }
  86
  87         /**
  88          * Remove last character if it is a newline
  89          * @access private
  90          */
  91         function chomp($s) {
  92                 if (substr($s, -1) === "\n") {
  93                         return substr($s, 0, -1);
  94                 }
  95                 else {
  96                         return $s;
  97                 }
  98         }
  99
 100         /**
 101          * Run a series of tests listed in the given text file.
 102          * Each test consists of a brief description, wikitext input,
 103          * and the expected HTML output.
 104          *
 105          * Prints status updates on stdout and counts up the total
 106          * number and percentage of passed tests.
 107          *
 108          * @param string $filename
 109          * @return bool True if passed all tests, false if any tests failed.
 110          * @access public
 111          */
 112         function runTestsFromFile( $filename ) {
 113                 $infile = fopen( $filename, 'rt' );
 114                 if( !$infile ) {
 115                         die( "Couldn't open parserTests.txt\n" );
 116                 }
 117
 118                 $data = array();
 119                 $section = null;
 120                 $success = 0;
 121                 $total = 0;
 122                 $n = 0;
 123                 while( false !== ($line = fgets( $infile ) ) ) {
 124                         $n++;
 125                         if( preg_match( '/^!!\s*(\w+)/', $line, $matches ) ) {
 126                                 $section = strtolower( $matches[1] );
 127                                 if( $section == 'endarticle') {
 128                                         if( !isset( $data['text'] ) ) {
 129                                                 die( "'endarticle' without 'text' at line $n\n" );
 130                                         }
 131                                         if( !isset( $data['article'] ) ) {
 132                                                 die( "'endarticle' without 'article' at line $n\n" );
 133                                         }
 134                                         $this->addArticle($this->chomp($data['article']), $this->chomp($data['text']), $n);
 135                                         $data = array();
 136                                         $section = null;
 137                                         continue;
 138                                 }
 139                                 if( $section == 'end' ) {
 140                                         if( !isset( $data['test'] ) ) {
 141                                                 die( "'end' without 'test' at line $n\n" );
 142                                         }
 143                                         if( !isset( $data['input'] ) ) {
 144                                                 die( "'end' without 'input' at line $n\n" );
 145                                         }
 146                                         if( !isset( $data['result'] ) ) {
 147                                                 die( "'end' without 'result' at line $n\n" );
 148                                         }
 149                                         if( !isset( $data['options'] ) ) {
 150                                                 $data['options'] = '';
 151                                         }
 152                                         else {
 153                                                 $data['options'] = $this->chomp( $data['options'] );
 154                                         }
 155                                         if (preg_match('/\\bdisabled\\b/i', $data['options'])
 156                                                 || !preg_match("/{$this->regex}/i", $data['test'])) {
 157                                                 # disabled test
 158                                                 $data = array();
 159                                                 $section = null;
 160                                                 continue;
 161                                         }
 162                                         if( $this->runTest(
 163                                                 $this->chomp( $data['test'] ),
 164                                                 $this->chomp( $data['input'] ),
 165                                                 $this->chomp( $data['result'] ),
 166                                                 $this->chomp( $data['options'] ) ) ) {
 167                                                 $success++;
 168                                         }
 169                                         $total++;
 170                                         $data = array();
 171                                         $section = null;
 172                                         continue;
 173                                 }
 174                                 if ( isset ($data[$section] ) ) {
 175                                         die ( "duplicate section '$section' at line $n\n" );
 176                                 }
 177                                 $data[$section] = '';
 178                                 continue;
 179                         }
 180                         if( $section ) {
 181                                 $data[$section] .= $line;
 182                         }
 183                 }
 184                 if( $total > 0 ) {
 185                         $ratio = IntVal( 100.0 * $success / $total );
 186                         print $this->termColor( 1 ) . "\nPassed $success of $total tests ($ratio%) ";
 187                         if( $success == $total ) {
 188                                 print $this->termColor( 32 ) . "PASSED!";
 189                         } else {
 190                                 print $this->termColor( 31 ) . "FAILED!";
 191                         }
 192                         print $this->termReset() . "\n";
 193                         return ($success == $total);
 194                 } else {
 195                         die( "No tests found.\n" );
 196                 }
 197         }
 198
 199         /**
 200          * Run a given wikitext input through a freshly-constructed wiki parser,
 201          * and compare the output against the expected results.
 202          * Prints status and explanatory messages to stdout.
 203          *
 204          * @param string $input Wikitext to try rendering
 205          * @param string $result Result to output
 206          * @return bool
 207          */
 208         function runTest( $desc, $input, $result, $opts ) {
 209                 print "Running test $desc... ";
 210
 211                 $this->setupGlobals($opts);
 212
 213                 $user =& new User();
 214                 $options =& ParserOptions::newFromUser( $user );
 215
 216                 if (preg_match('/\\bmath\\b/i', $opts)) {
 217                         # XXX this should probably be done by the ParserOptions
 218                         require_once('Math.php');
 219
 220                         $options->setUseTex(true);
 221                 }
 222
 223                 if (preg_match('/title=\[\[(.*)\]\]/', $opts, $m)) {
 224                         $titleText = $m[1];
 225                 }
 226                 else {
 227                         $titleText = 'Parser test';
 228                 }
 229
 230                 $parser =& new Parser();
 231                 $title =& Title::makeTitle( NS_MAIN, $titleText );
 232
 233                 if (preg_match('/\\bpst\\b/i', $opts)) {
 234                         $out = $parser->preSaveTransform( $input, $title, $user, $options );
 235                 }
 236                 else if (preg_match('/\\bmsg\\b/i', $opts)) {
 237                         $out = $parser->transformMsg( $input, $options );
 238                 }
 239                 else {
 240                         $output =& $parser->parse( $input, $title, $options );
 241                         $out = $output->getText();
 242
 243                         $op = new OutputPage();
 244                         $op->replaceLinkHolders($out);
 245
 246                         if (preg_match('/\\bill\\b/i', $opts)) {
 247                                 $out .= implode( ' ', $output->getLanguageLinks() );
 248                         }
 249                         if (preg_match('/\\bcat\\b/i', $opts)) {
 250                                 $out .= implode( ' ', $output->getCategoryLinks() );
 251                         }
 252
 253                         if ($GLOBALS['wgUseTidy']) {
 254                                 $out = Parser::tidy($out);
 255                                 $result = Parser::tidy($result);
 256                         }
 257                 }
 258
 259                 $this->teardownGlobals();
 260
 261                 if( $result === $out ) {
 262                         return $this->showSuccess( $desc );
 263                 } else {
 264                         return $this->showFailure( $desc, $result, $out );
 265                 }
 266         }
 267
 268         /**
 269          * Set up the global variables for a consistent environment for each test.
 270          * Ideally this should replace the global configuration entirely.
 271          *
 272          * @access private
 273          */
 274         function setupGlobals($opts = '') {
 275                 # Save the prefixed / quoted table names for later use when we make the temporaries.
 276                 $db =& wfGetDB( DB_READ );
 277                 $this->oldTableNames = array();
 278                 foreach( $this->listTables() as $table ) {
 279                         $this->oldTableNames[$table] = $db->tableName( $table );
 280                 }
 281
 282                 $settings = array(
 283                         'wgServer' => 'http://localhost',
 284                         'wgScript' => '/index.php',
 285                         'wgScriptPath' => '/',
 286                         'wgArticlePath' => '/wiki/$1',
 287                         'wgUploadPath' => '/images',
 288                         'wgSitename' => 'MediaWiki',
 289                         'wgLanguageCode' => 'en',
 290                         'wgUseLatin1' => false,
 291                         'wgDBprefix' => 'parsertest',
 292
 293                         'wgLoadBalancer' => LoadBalancer::newFromParams( $GLOBALS['wgDBservers'] ),
 294                         'wgLang' => new LanguageUtf8(),
 295                         'wgNamespacesWithSubpages' => array( 0 => preg_match('/\\bsubpage\\b/i', $opts)),
 296                         );
 297                 $this->savedGlobals = array();
 298                 foreach( $settings as $var => $val ) {
 299                         $this->savedGlobals[$var] = $GLOBALS[$var];
 300                         $GLOBALS[$var] = $val;
 301                 }
 302                 $GLOBALS['wgLoadBalancer']->loadMasterPos();
 303                 $this->setupDatabase();
 304         }
 305
 306         # List of temporary tables to create, without prefix
 307         # Some of these probably aren't necessary
 308         function listTables() {
 309                 return array('user', 'cur', 'old', 'links',
 310                         'brokenlinks', 'imagelinks', 'categorylinks',
 311                         'linkscc', 'site_stats', 'hitcounter',
 312                         'ipblocks', 'image', 'oldimage',
 313                         'recentchanges',
 314                         'watchlist', 'math', 'searchindex',
 315                         'interwiki', 'querycache',
 316                         'objectcache'
 317                 );
 318         }
 319
 320         /**
 321          * Set up a temporary set of wiki tables to work with for the tests.
 322          * Currently this will only be done once per run, and any changes to
 323          * the db will be visible to later tests in the run.
 324          *
 325          * @access private
 326          */
 327         function setupDatabase() {
 328                 static $setupDB = false;
 329                 global $wgDBprefix;
 330
 331                 # Make sure we don't mess with the live DB
 332                 if (!$setupDB && $wgDBprefix === 'parsertest') {
 333                         $db =& wfGetDB( DB_MASTER );
 334
 335                         $tables = $this->listTables();
 336
 337                         if (!(strcmp($db->getServerVersion(), '4.1') < 0 and stristr($db->getSoftwareLink(), 'MySQL'))) {
 338                                 # Database that supports CREATE TABLE ... LIKE
 339                                 foreach ($tables as $tbl) {
 340                                         $newTableName = $db->tableName( $tbl );
 341                                         $tableName = $this->oldTableNames[$tbl];
 342                                         $db->query("CREATE TEMPORARY TABLE $newTableName (LIKE $tableName INCLUDING DEFAULTS)");
 343                                 }
 344                         } else {
 345                                 # Hack for MySQL versions < 4.1, which don't support
 346                                 # "CREATE TABLE ... LIKE". Note that
 347                                 # "CREATE TEMPORARY TABLE ... SELECT * FROM ... LIMIT 0"
 348                                 # would not create the indexes we need....
 349                                 foreach ($tables as $tbl) {
 350                                         $res = $db->query("SHOW CREATE TABLE $tbl");
 351                                         $row = $db->fetchRow($res);
 352                                         $create = $row[1];
 353                                         $create_tmp = preg_replace('/CREATE TABLE `(.*?)`/', 'CREATE TEMPORARY TABLE `'
 354                                                 . $wgDBprefix . '\\1`', $create);
 355                                         if ($create === $create_tmp) {
 356                                                 # Couldn't do replacement
 357                                                 die("could not create temporary table $tbl");
 358                                         }
 359                                         $db->query($create_tmp);
 360                                 }
 361
 362                         }
 363
 364                         # Hack: insert a few Wikipedia in-project interwiki prefixes,
 365                         # for testing inter-language links
 366                         $db->insertArray( 'interwiki', array(
 367                                 array( 'iw_prefix' => 'Wikipedia',
 368                                        'iw_url'    => 'http://en.wikipedia.org/wiki/$1',
 369                                        'iw_local'  => 0 ),
 370                                 array( 'iw_prefix' => 'MeatBall',
 371                                        'iw_url'    => 'http://www.usemod.com/cgi-bin/mb.pl?$1',
 372                                        'iw_local'  => 0 ),
 373                                 array( 'iw_prefix' => 'zh',
 374                                        'iw_url'    => 'http://zh.wikipedia.org/wiki/$1',
 375                                        'iw_local'  => 1 ),
 376                                 array( 'iw_prefix' => 'es',
 377                                        'iw_url'    => 'http://es.wikipedia.org/wiki/$1',
 378                                        'iw_local'  => 1 ),
 379                                 array( 'iw_prefix' => 'fr',
 380                                        'iw_url'    => 'http://fr.wikipedia.org/wiki/$1',
 381                                        'iw_local'  => 1 ) ) );
 382
 383
 384                         $setupDB = true;
 385                 }
 386         }
 387
 388         /**
 389          * Restore default values and perform any necessary clean-up
 390          * after each test runs.
 391          *
 392          * @access private
 393          */
 394         function teardownGlobals() {
 395                 foreach( $this->savedGlobals as $var => $val ) {
 396                         $GLOBALS[$var] = $val;
 397                 }
 398         }
 399
 400         /**
 401          * Print a happy success message.
 402          *
 403          * @param string $desc The test name
 404          * @return bool
 405          * @access private
 406          */
 407         function showSuccess( $desc ) {
 408                 print $this->termColor( '1;32' ) . 'PASSED' . $this->termReset() . "\n";
 409                 return true;
 410         }
 411
 412         /**
 413          * Print a failure message and provide some explanatory output
 414          * about what went wrong if so configured.
 415          *
 416          * @param string $desc The test name
 417          * @param string $result Expected HTML output
 418          * @param string $html Actual HTML output
 419          * @return bool
 420          * @access private
 421          */
 422         function showFailure( $desc, $result, $html ) {
 423                 print $this->termColor( '1;31' ) . 'FAILED!' . $this->termReset() . "\n";
 424                 if( $this->showDiffs ) {
 425                         print $this->quickDiff( $result, $html );
 426                 }
 427                 return false;
 428         }
 429
 430         /**
 431          * Run given strings through a diff and return the (colorized) output.
 432          * Requires writable /tmp directory and a 'diff' command in the PATH.
 433          *
 434          * @param string $input
 435          * @param string $output
 436          * @return string
 437          * @access private
 438          */
 439         function quickDiff( $input, $output ) {
 440                 $prefix = "/tmp/mwParser-" . mt_rand();
 441
 442                 $infile = "$prefix-expected";
 443                 $this->dumpToFile( $input, $infile );
 444
 445                 $outfile = "$prefix-actual";
 446                 $this->dumpToFile( $output, $outfile );
 447
 448                 $diff = `diff -u $infile $outfile`;
 449                 unlink( $infile );
 450                 unlink( $outfile );
 451
 452                 return $this->colorDiff( $diff );
 453         }
 454
 455         /**
 456          * Write the given string to a file, adding a final newline.
 457          *
 458          * @param string $data
 459          * @param string $filename
 460          * @access private
 461          */
 462         function dumpToFile( $data, $filename ) {
 463                 $file = fopen( $filename, "wt" );
 464                 fwrite( $file, $data . "\n" );
 465                 fclose( $file );
 466         }
 467
 468         /**
 469          * Return ANSI terminal escape code for changing text attribs/color,
 470          * or empty string if color output is disabled.
 471          *
 472          * @param string $color Semicolon-separated list of attribute/color codes
 473          * @return string
 474          * @access private
 475          */
 476         function termColor( $color ) {
 477                 if($this->lightcolor) {
 478                         return $this->color ? "\x1b[1;{$color}m" : '';
 479                 } else {
 480                         return $this->color ? "\x1b[{$color}m" : '';
 481                 }
 482         }
 483
 484         /**
 485          * Return ANSI terminal escape code for restoring default text attributes,
 486          * or empty string if color output is disabled.
 487          *
 488          * @return string
 489          * @access private
 490          */
 491         function termReset() {
 492                 return $this->color ? "\x1b[0m" : '';
 493         }
 494
 495         /**
 496          * Colorize unified diff output if set for ANSI color output.
 497          * Subtractions are colored blue, additions red.
 498          *
 499          * @param string $text
 500          * @return string
 501          * @access private
 502          */
 503         function colorDiff( $text ) {
 504                 return preg_replace(
 505                         array( '/^(-.*)$/m', '/^(\+.*)$/m' ),
 506                         array( $this->termColor( 34 ) . '$1' . $this->termReset(),
 507                                $this->termColor( 31 ) . '$1' . $this->termReset() ),
 508                         $text );
 509         }
 510
 511         /**
 512          * Insert a temporary test article
 513          * @param $name string the title, including any prefix
 514          * @param $text string the article text
 515          * @param $line int the input line number, for reporting errors
 516          * @static
 517          * @access private
 518          */
 519         function addArticle($name, $text, $line) {
 520                 $this->setupGlobals();
 521                 $title = Title::newFromText( $name );
 522                 if ( is_null($title) ) {
 523                         die( "invalid title at line $line\n" );
 524                 }
 525
 526                 $aid = $title->getArticleID( GAID_FOR_UPDATE );
 527                 if ($aid != 0) {
 528                         die( "duplicate article at line $line\n" );
 529                 }
 530
 531                 $art = new Article($title);
 532                 $art->insertNewArticle($text, '', false, false );
 533                 $this->teardownGlobals();
 534         }
 535 }
 536
 537 $wgTitle = Title::newFromText( 'Parser test script' );
 538 $tester =& new ParserTest();
 539
 540 # Note: the command line setup changes the current working directory
 541 # to the parent, which is why we have to put the subdir here:
 542 $ok = $tester->runTestsFromFile( 'maintenance/parserTests.txt' );
 543
 544 exit ($ok ? 0 : -1);
 545
 546 ?>