tests/phpunit/includes/api/ApiComparePagesTest.php

   1 <?php
   2
   3 /**
   4  * @group API
   5  * @group Database
   6  * @group medium
   7  * @covers ApiComparePages
   8  */
   9 class ApiComparePagesTest extends ApiTestCase {
  10
  11         protected static $repl = [];
  12
  13         protected function setUp() {
  14                 parent::setUp();
  15
  16                 // Set $wgExternalDiffEngine to something bogus to try to force use of
  17                 // the PHP engine rather than wikidiff2.
  18                 $this->setMwGlobals( [
  19                         'wgExternalDiffEngine' => '/dev/null',
  20                 ] );
  21         }
  22
  23         protected function addPage( $page, $text, $model = CONTENT_MODEL_WIKITEXT ) {
  24                 $title = Title::newFromText( 'ApiComparePagesTest ' . $page );
  25                 $content = ContentHandler::makeContent( $text, $title, $model );
  26
  27                 $page = WikiPage::factory( $title );
  28                 $user = static::getTestSysop()->getUser();
  29                 $status = $page->doEditContent(
  30                         $content, 'Test for ApiComparePagesTest: ' . $text, 0, false, $user
  31                 );
  32                 if ( !$status->isOK() ) {
  33                         $this->fail( "Failed to create $title: " . $status->getWikiText( false, false, 'en' ) );
  34                 }
  35                 return $status->value['revision']->getId();
  36         }
  37
  38         public function addDBDataOnce() {
  39                 $user = static::getTestSysop()->getUser();
  40                 self::$repl['creator'] = $user->getName();
  41                 self::$repl['creatorid'] = $user->getId();
  42
  43                 self::$repl['revA1'] = $this->addPage( 'A', 'A 1' );
  44                 self::$repl['revA2'] = $this->addPage( 'A', 'A 2' );
  45                 self::$repl['revA3'] = $this->addPage( 'A', 'A 3' );
  46                 self::$repl['revA4'] = $this->addPage( 'A', 'A 4' );
  47                 self::$repl['pageA'] = Title::newFromText( 'ApiComparePagesTest A' )->getArticleID();
  48
  49                 self::$repl['revB1'] = $this->addPage( 'B', 'B 1' );
  50                 self::$repl['revB2'] = $this->addPage( 'B', 'B 2' );
  51                 self::$repl['revB3'] = $this->addPage( 'B', 'B 3' );
  52                 self::$repl['revB4'] = $this->addPage( 'B', 'B 4' );
  53                 self::$repl['pageB'] = Title::newFromText( 'ApiComparePagesTest B' )->getArticleID();
  54
  55                 self::$repl['revC1'] = $this->addPage( 'C', 'C 1' );
  56                 self::$repl['revC2'] = $this->addPage( 'C', 'C 2' );
  57                 self::$repl['revC3'] = $this->addPage( 'C', 'C 3' );
  58                 self::$repl['pageC'] = Title::newFromText( 'ApiComparePagesTest C' )->getArticleID();
  59
  60                 $id = $this->addPage( 'D', 'D 1' );
  61                 self::$repl['pageD'] = Title::newFromText( 'ApiComparePagesTest D' )->getArticleID();
  62                 wfGetDB( DB_MASTER )->delete( 'revision', [ 'rev_id' => $id ] );
  63
  64                 self::$repl['revE1'] = $this->addPage( 'E', 'E 1' );
  65                 self::$repl['revE2'] = $this->addPage( 'E', 'E 2' );
  66                 self::$repl['revE3'] = $this->addPage( 'E', 'E 3' );
  67                 self::$repl['revE4'] = $this->addPage( 'E', 'E 4' );
  68                 self::$repl['pageE'] = Title::newFromText( 'ApiComparePagesTest E' )->getArticleID();
  69                 wfGetDB( DB_MASTER )->update(
  70                         'page', [ 'page_latest' => 0 ], [ 'page_id' => self::$repl['pageE'] ]
  71                 );
  72
  73                 self::$repl['revF1'] = $this->addPage( 'F', "== Section 1 ==\nF 1.1\n\n== Section 2 ==\nF 1.2" );
  74                 self::$repl['pageF'] = Title::newFromText( 'ApiComparePagesTest F' )->getArticleID();
  75
  76                 self::$repl['revG1'] = $this->addPage( 'G', "== Section 1 ==\nG 1.1", CONTENT_MODEL_TEXT );
  77                 self::$repl['pageG'] = Title::newFromText( 'ApiComparePagesTest G' )->getArticleID();
  78
  79                 WikiPage::factory( Title::newFromText( 'ApiComparePagesTest C' ) )
  80                         ->doDeleteArticleReal( 'Test for ApiComparePagesTest' );
  81
  82                 RevisionDeleter::createList(
  83                         'revision',
  84                         RequestContext::getMain(),
  85                         Title::newFromText( 'ApiComparePagesTest B' ),
  86                         [ self::$repl['revB2'] ]
  87                 )->setVisibility( [
  88                         'value' => [
  89                                 Revision::DELETED_TEXT => 1,
  90                                 Revision::DELETED_USER => 1,
  91                                 Revision::DELETED_COMMENT => 1,
  92                         ],
  93                         'comment' => 'Test for ApiComparePages',
  94                 ] );
  95
  96                 RevisionDeleter::createList(
  97                         'revision',
  98                         RequestContext::getMain(),
  99                         Title::newFromText( 'ApiComparePagesTest B' ),
 100                         [ self::$repl['revB3'] ]
 101                 )->setVisibility( [
 102                         'value' => [
 103                                 Revision::DELETED_USER => 1,
 104                                 Revision::DELETED_COMMENT => 1,
 105                                 Revision::DELETED_RESTRICTED => 1,
 106                         ],
 107                         'comment' => 'Test for ApiComparePages',
 108                 ] );
 109
 110                 Title::clearCaches(); // Otherwise it has the wrong latest revision for some reason
 111         }
 112
 113         protected function doReplacements( &$value ) {
 114                 if ( is_string( $value ) ) {
 115                         if ( preg_match( '/^{{REPL:(.+?)}}$/', $value, $m ) ) {
 116                                 $value = self::$repl[$m[1]];
 117                         } else {
 118                                 $value = preg_replace_callback( '/{{REPL:(.+?)}}/', function ( $m ) {
 119                                         return self::$repl[$m[1]] ?? $m[0];
 120                                 }, $value );
 121                         }
 122                 } elseif ( is_array( $value ) || is_object( $value ) ) {
 123                         foreach ( $value as &$v ) {
 124                                 $this->doReplacements( $v );
 125                         }
 126                         unset( $v );
 127                 }
 128         }
 129
 130         /**
 131          * @dataProvider provideDiff
 132          */
 133         public function testDiff( $params, $expect, $exceptionCode = false, $sysop = false ) {
 134                 $this->doReplacements( $params );
 135
 136                 $params += [
 137                         'action' => 'compare',
 138                         'errorformat' => 'none',
 139                 ];
 140
 141                 $user = $sysop
 142                         ? static::getTestSysop()->getUser()
 143                         : static::getTestUser()->getUser();
 144                 if ( $exceptionCode ) {
 145                         try {
 146                                 $this->doApiRequest( $params, null, false, $user );
 147                                 $this->fail( 'Expected exception not thrown' );
 148                         } catch ( ApiUsageException $ex ) {
 149                                 $this->assertTrue( $this->apiExceptionHasCode( $ex, $exceptionCode ),
 150                                         "Exception with code $exceptionCode" );
 151                         }
 152                 } else {
 153                         $apiResult = $this->doApiRequest( $params, null, false, $user );
 154                         $apiResult = $apiResult[0];
 155                         $this->doReplacements( $expect );
 156                         $this->assertEquals( $expect, $apiResult );
 157                 }
 158         }
 159
 160         private static function makeDeprecationWarnings( ...$params ) {
 161                 $warn = [];
 162                 foreach ( $params as $p ) {
 163                         $warn[] = [
 164                                 'code' => 'deprecation',
 165                                 'data' => [ 'feature' => "action=compare&{$p}" ],
 166                                 'module' => 'compare',
 167                         ];
 168                         if ( count( $warn ) === 1 ) {
 169                                 $warn[] = [
 170                                         'code' => 'deprecation-help',
 171                                         'module' => 'main',
 172                                 ];
 173                         }
 174                 }
 175
 176                 return $warn;
 177         }
 178
 179         public static function provideDiff() {
 180                 // phpcs:disable Generic.Files.LineLength.TooLong
 181                 return [
 182                         'Basic diff, titles' => [
 183                                 [
 184                                         'fromtitle' => 'ApiComparePagesTest A',
 185                                         'totitle' => 'ApiComparePagesTest B',
 186                                 ],
 187                                 [
 188                                         'compare' => [
 189                                                 'fromid' => '{{REPL:pageA}}',
 190                                                 'fromrevid' => '{{REPL:revA4}}',
 191                                                 'fromns' => 0,
 192                                                 'fromtitle' => 'ApiComparePagesTest A',
 193                                                 'toid' => '{{REPL:pageB}}',
 194                                                 'torevid' => '{{REPL:revB4}}',
 195                                                 'tons' => 0,
 196                                                 'totitle' => 'ApiComparePagesTest B',
 197                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 198                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 199                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div><del class="diffchange diffchange-inline">A </del>4</div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div><ins class="diffchange diffchange-inline">B </ins>4</div></td></tr>' . "\n",
 200                                         ]
 201                                 ],
 202                         ],
 203                         'Basic diff, page IDs' => [
 204                                 [
 205                                         'fromid' => '{{REPL:pageA}}',
 206                                         'toid' => '{{REPL:pageB}}',
 207                                 ],
 208                                 [
 209                                         'compare' => [
 210                                                 'fromid' => '{{REPL:pageA}}',
 211                                                 'fromrevid' => '{{REPL:revA4}}',
 212                                                 'fromns' => 0,
 213                                                 'fromtitle' => 'ApiComparePagesTest A',
 214                                                 'toid' => '{{REPL:pageB}}',
 215                                                 'torevid' => '{{REPL:revB4}}',
 216                                                 'tons' => 0,
 217                                                 'totitle' => 'ApiComparePagesTest B',
 218                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 219                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 220                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div><del class="diffchange diffchange-inline">A </del>4</div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div><ins class="diffchange diffchange-inline">B </ins>4</div></td></tr>' . "\n",
 221                                         ]
 222                                 ],
 223                         ],
 224                         'Basic diff, revision IDs' => [
 225                                 [
 226                                         'fromrev' => '{{REPL:revA2}}',
 227                                         'torev' => '{{REPL:revA3}}',
 228                                 ],
 229                                 [
 230                                         'compare' => [
 231                                                 'fromid' => '{{REPL:pageA}}',
 232                                                 'fromrevid' => '{{REPL:revA2}}',
 233                                                 'fromns' => 0,
 234                                                 'fromtitle' => 'ApiComparePagesTest A',
 235                                                 'toid' => '{{REPL:pageA}}',
 236                                                 'torevid' => '{{REPL:revA3}}',
 237                                                 'tons' => 0,
 238                                                 'totitle' => 'ApiComparePagesTest A',
 239                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 240                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 241                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div>A <del class="diffchange diffchange-inline">2</del></div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div>A <ins class="diffchange diffchange-inline">3</ins></div></td></tr>' . "\n",
 242                                         ]
 243                                 ],
 244                         ],
 245                         'Basic diff, deleted revision ID as sysop' => [
 246                                 [
 247                                         'fromrev' => '{{REPL:revA2}}',
 248                                         'torev' => '{{REPL:revC2}}',
 249                                 ],
 250                                 [
 251                                         'compare' => [
 252                                                 'fromid' => '{{REPL:pageA}}',
 253                                                 'fromrevid' => '{{REPL:revA2}}',
 254                                                 'fromns' => 0,
 255                                                 'fromtitle' => 'ApiComparePagesTest A',
 256                                                 'toid' => 0,
 257                                                 'torevid' => '{{REPL:revC2}}',
 258                                                 'tons' => 0,
 259                                                 'totitle' => 'ApiComparePagesTest C',
 260                                                 'toarchive' => true,
 261                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 262                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 263                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div><del class="diffchange diffchange-inline">A </del>2</div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div><ins class="diffchange diffchange-inline">C </ins>2</div></td></tr>' . "\n",
 264                                         ]
 265                                 ],
 266                                 false, true
 267                         ],
 268                         'Basic diff, revdel as sysop' => [
 269                                 [
 270                                         'fromrev' => '{{REPL:revA2}}',
 271                                         'torev' => '{{REPL:revB2}}',
 272                                 ],
 273                                 [
 274                                         'compare' => [
 275                                                 'fromid' => '{{REPL:pageA}}',
 276                                                 'fromrevid' => '{{REPL:revA2}}',
 277                                                 'fromns' => 0,
 278                                                 'fromtitle' => 'ApiComparePagesTest A',
 279                                                 'toid' => '{{REPL:pageB}}',
 280                                                 'torevid' => '{{REPL:revB2}}',
 281                                                 'tons' => 0,
 282                                                 'totitle' => 'ApiComparePagesTest B',
 283                                                 'totexthidden' => true,
 284                                                 'touserhidden' => true,
 285                                                 'tocommenthidden' => true,
 286                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 287                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 288                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div><del class="diffchange diffchange-inline">A </del>2</div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div><ins class="diffchange diffchange-inline">B </ins>2</div></td></tr>' . "\n",
 289                                         ]
 290                                 ],
 291                                 false, true
 292                         ],
 293                         'Basic diff, text' => [
 294                                 [
 295                                         'fromslots' => 'main',
 296                                         'fromtext-main' => 'From text',
 297                                         'fromcontentmodel-main' => 'wikitext',
 298                                         'toslots' => 'main',
 299                                         'totext-main' => 'To text {{subst:PAGENAME}}',
 300                                         'tocontentmodel-main' => 'wikitext',
 301                                 ],
 302                                 [
 303                                         'compare' => [
 304                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 305                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 306                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div><del class="diffchange diffchange-inline">From </del>text</div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div><ins class="diffchange diffchange-inline">To </ins>text <ins class="diffchange diffchange-inline">{{subst:PAGENAME}}</ins></div></td></tr>' . "\n",
 307                                         ]
 308                                 ],
 309                         ],
 310                         'Basic diff, text 2' => [
 311                                 [
 312                                         'fromslots' => 'main',
 313                                         'fromtext-main' => 'From text',
 314                                         'toslots' => 'main',
 315                                         'totext-main' => 'To text {{subst:PAGENAME}}',
 316                                         'tocontentmodel-main' => 'wikitext',
 317                                 ],
 318                                 [
 319                                         'compare' => [
 320                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 321                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 322                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div><del class="diffchange diffchange-inline">From </del>text</div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div><ins class="diffchange diffchange-inline">To </ins>text <ins class="diffchange diffchange-inline">{{subst:PAGENAME}}</ins></div></td></tr>' . "\n",
 323                                         ]
 324                                 ],
 325                         ],
 326                         'Basic diff, guessed model' => [
 327                                 [
 328                                         'fromslots' => 'main',
 329                                         'fromtext-main' => 'From text',
 330                                         'toslots' => 'main',
 331                                         'totext-main' => 'To text',
 332                                 ],
 333                                 [
 334                                         'warnings' => [ [ 'code' => 'compare-nocontentmodel', 'module' => 'compare' ] ],
 335                                         'compare' => [
 336                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 337                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 338                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div><del class="diffchange diffchange-inline">From </del>text</div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div><ins class="diffchange diffchange-inline">To </ins>text</div></td></tr>' . "\n",
 339                                         ]
 340                                 ],
 341                         ],
 342                         'Basic diff, text with title and PST' => [
 343                                 [
 344                                         'fromslots' => 'main',
 345                                         'fromtext-main' => 'From text',
 346                                         'totitle' => 'Test',
 347                                         'toslots' => 'main',
 348                                         'totext-main' => 'To text {{subst:PAGENAME}}',
 349                                         'topst' => true,
 350                                 ],
 351                                 [
 352                                         'compare' => [
 353                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 354                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 355                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div><del class="diffchange diffchange-inline">From </del>text</div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div><ins class="diffchange diffchange-inline">To </ins>text <ins class="diffchange diffchange-inline">Test</ins></div></td></tr>' . "\n",
 356                                         ]
 357                                 ],
 358                         ],
 359                         'Basic diff, text with page ID and PST' => [
 360                                 [
 361                                         'fromslots' => 'main',
 362                                         'fromtext-main' => 'From text',
 363                                         'toid' => '{{REPL:pageB}}',
 364                                         'toslots' => 'main',
 365                                         'totext-main' => 'To text {{subst:PAGENAME}}',
 366                                         'topst' => true,
 367                                 ],
 368                                 [
 369                                         'compare' => [
 370                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 371                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 372                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div><del class="diffchange diffchange-inline">From </del>text</div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div><ins class="diffchange diffchange-inline">To </ins>text <ins class="diffchange diffchange-inline">ApiComparePagesTest B</ins></div></td></tr>' . "\n",
 373                                         ]
 374                                 ],
 375                         ],
 376                         'Basic diff, text with revision and PST' => [
 377                                 [
 378                                         'fromslots' => 'main',
 379                                         'fromtext-main' => 'From text',
 380                                         'torev' => '{{REPL:revB2}}',
 381                                         'toslots' => 'main',
 382                                         'totext-main' => 'To text {{subst:PAGENAME}}',
 383                                         'topst' => true,
 384                                 ],
 385                                 [
 386                                         'compare' => [
 387                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 388                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 389                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div><del class="diffchange diffchange-inline">From </del>text</div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div><ins class="diffchange diffchange-inline">To </ins>text <ins class="diffchange diffchange-inline">ApiComparePagesTest B</ins></div></td></tr>' . "\n",
 390                                         ]
 391                                 ],
 392                         ],
 393                         'Basic diff, text with deleted revision and PST' => [
 394                                 [
 395                                         'fromslots' => 'main',
 396                                         'fromtext-main' => 'From text',
 397                                         'torev' => '{{REPL:revC2}}',
 398                                         'toslots' => 'main',
 399                                         'totext-main' => 'To text {{subst:PAGENAME}}',
 400                                         'topst' => true,
 401                                 ],
 402                                 [
 403                                         'compare' => [
 404                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 405                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 406                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div><del class="diffchange diffchange-inline">From </del>text</div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div><ins class="diffchange diffchange-inline">To </ins>text <ins class="diffchange diffchange-inline">ApiComparePagesTest C</ins></div></td></tr>' . "\n",
 407                                         ]
 408                                 ],
 409                                 false, true
 410                         ],
 411                         'Basic diff, test with sections' => [
 412                                 [
 413                                         'fromtitle' => 'ApiComparePagesTest F',
 414                                         'fromslots' => 'main',
 415                                         'fromtext-main' => "== Section 2 ==\nFrom text?",
 416                                         'fromsection-main' => 2,
 417                                         'totitle' => 'ApiComparePagesTest F',
 418                                         'toslots' => 'main',
 419                                         'totext-main' => "== Section 1 ==\nTo text?",
 420                                         'tosection-main' => 1,
 421                                 ],
 422                                 [
 423                                         'compare' => [
 424                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 425                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 426                                                         . '<tr><td class=\'diff-marker\'> </td><td class=\'diff-context\'><div>== Section 1 ==</div></td><td class=\'diff-marker\'> </td><td class=\'diff-context\'><div>== Section 1 ==</div></td></tr>' . "\n"
 427                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div><del class="diffchange diffchange-inline">F 1.1</del></div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div><ins class="diffchange diffchange-inline">To text?</ins></div></td></tr>' . "\n"
 428                                                         . '<tr><td class=\'diff-marker\'> </td><td class=\'diff-context\'></td><td class=\'diff-marker\'> </td><td class=\'diff-context\'></td></tr>' . "\n"
 429                                                         . '<tr><td class=\'diff-marker\'> </td><td class=\'diff-context\'><div>== Section 2 ==</div></td><td class=\'diff-marker\'> </td><td class=\'diff-context\'><div>== Section 2 ==</div></td></tr>' . "\n"
 430                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div><del class="diffchange diffchange-inline">From text?</del></div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div><ins class="diffchange diffchange-inline">F 1.2</ins></div></td></tr>' . "\n",
 431                                         ]
 432                                 ],
 433                         ],
 434                         'Diff with all props' => [
 435                                 [
 436                                         'fromrev' => '{{REPL:revB1}}',
 437                                         'torev' => '{{REPL:revB3}}',
 438                                         'totitle' => 'ApiComparePagesTest B',
 439                                         'prop' => 'diff|diffsize|rel|ids|title|user|comment|parsedcomment|size'
 440                                 ],
 441                                 [
 442                                         'compare' => [
 443                                                 'fromid' => '{{REPL:pageB}}',
 444                                                 'fromrevid' => '{{REPL:revB1}}',
 445                                                 'fromns' => 0,
 446                                                 'fromtitle' => 'ApiComparePagesTest B',
 447                                                 'fromsize' => 3,
 448                                                 'fromuser' => '{{REPL:creator}}',
 449                                                 'fromuserid' => '{{REPL:creatorid}}',
 450                                                 'fromcomment' => 'Test for ApiComparePagesTest: B 1',
 451                                                 'fromparsedcomment' => 'Test for ApiComparePagesTest: B 1',
 452                                                 'toid' => '{{REPL:pageB}}',
 453                                                 'torevid' => '{{REPL:revB3}}',
 454                                                 'tons' => 0,
 455                                                 'totitle' => 'ApiComparePagesTest B',
 456                                                 'tosize' => 3,
 457                                                 'touserhidden' => true,
 458                                                 'tocommenthidden' => true,
 459                                                 'tosuppressed' => true,
 460                                                 'next' => '{{REPL:revB4}}',
 461                                                 'diffsize' => 391,
 462                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 463                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 464                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div>B <del class="diffchange diffchange-inline">1</del></div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div>B <ins class="diffchange diffchange-inline">3</ins></div></td></tr>' . "\n",
 465                                         ]
 466                                 ],
 467                         ],
 468                         'Diff with all props as sysop' => [
 469                                 [
 470                                         'fromrev' => '{{REPL:revB2}}',
 471                                         'torev' => '{{REPL:revB3}}',
 472                                         'totitle' => 'ApiComparePagesTest B',
 473                                         'prop' => 'diff|diffsize|rel|ids|title|user|comment|parsedcomment|size'
 474                                 ],
 475                                 [
 476                                         'compare' => [
 477                                                 'fromid' => '{{REPL:pageB}}',
 478                                                 'fromrevid' => '{{REPL:revB2}}',
 479                                                 'fromns' => 0,
 480                                                 'fromtitle' => 'ApiComparePagesTest B',
 481                                                 'fromsize' => 3,
 482                                                 'fromtexthidden' => true,
 483                                                 'fromuserhidden' => true,
 484                                                 'fromuser' => '{{REPL:creator}}',
 485                                                 'fromuserid' => '{{REPL:creatorid}}',
 486                                                 'fromcommenthidden' => true,
 487                                                 'fromcomment' => 'Test for ApiComparePagesTest: B 2',
 488                                                 'fromparsedcomment' => 'Test for ApiComparePagesTest: B 2',
 489                                                 'toid' => '{{REPL:pageB}}',
 490                                                 'torevid' => '{{REPL:revB3}}',
 491                                                 'tons' => 0,
 492                                                 'totitle' => 'ApiComparePagesTest B',
 493                                                 'tosize' => 3,
 494                                                 'touserhidden' => true,
 495                                                 'tocommenthidden' => true,
 496                                                 'tosuppressed' => true,
 497                                                 'prev' => '{{REPL:revB1}}',
 498                                                 'next' => '{{REPL:revB4}}',
 499                                                 'diffsize' => 391,
 500                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 501                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 502                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div>B <del class="diffchange diffchange-inline">2</del></div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div>B <ins class="diffchange diffchange-inline">3</ins></div></td></tr>' . "\n",
 503                                         ]
 504                                 ],
 505                                 false, true
 506                         ],
 507                         'Relative diff, cur' => [
 508                                 [
 509                                         'fromrev' => '{{REPL:revA2}}',
 510                                         'torelative' => 'cur',
 511                                         'prop' => 'ids',
 512                                 ],
 513                                 [
 514                                         'compare' => [
 515                                                 'fromid' => '{{REPL:pageA}}',
 516                                                 'fromrevid' => '{{REPL:revA2}}',
 517                                                 'toid' => '{{REPL:pageA}}',
 518                                                 'torevid' => '{{REPL:revA4}}',
 519                                         ]
 520                                 ],
 521                         ],
 522                         'Relative diff, next' => [
 523                                 [
 524                                         'fromrev' => '{{REPL:revE2}}',
 525                                         'torelative' => 'next',
 526                                         'prop' => 'ids|rel',
 527                                 ],
 528                                 [
 529                                         'compare' => [
 530                                                 'fromid' => '{{REPL:pageE}}',
 531                                                 'fromrevid' => '{{REPL:revE2}}',
 532                                                 'toid' => '{{REPL:pageE}}',
 533                                                 'torevid' => '{{REPL:revE3}}',
 534                                                 'prev' => '{{REPL:revE1}}',
 535                                                 'next' => '{{REPL:revE4}}',
 536                                         ]
 537                                 ],
 538                         ],
 539                         'Relative diff, prev' => [
 540                                 [
 541                                         'fromrev' => '{{REPL:revE3}}',
 542                                         'torelative' => 'prev',
 543                                         'prop' => 'ids|rel',
 544                                 ],
 545                                 [
 546                                         'compare' => [
 547                                                 'fromid' => '{{REPL:pageE}}',
 548                                                 'fromrevid' => '{{REPL:revE2}}',
 549                                                 'toid' => '{{REPL:pageE}}',
 550                                                 'torevid' => '{{REPL:revE3}}',
 551                                                 'prev' => '{{REPL:revE1}}',
 552                                                 'next' => '{{REPL:revE4}}',
 553                                         ]
 554                                 ],
 555                         ],
 556                         'Relative diff, no prev' => [
 557                                 [
 558                                         'fromrev' => '{{REPL:revA1}}',
 559                                         'torelative' => 'prev',
 560                                         'prop' => 'ids|rel|diff|title|user|comment',
 561                                 ],
 562                                 [
 563                                         'warnings' => [
 564                                                 [
 565                                                         'code' => 'compare-no-prev',
 566                                                         'module' => 'compare',
 567                                                 ],
 568                                         ],
 569                                         'compare' => [
 570                                                 'toid' => '{{REPL:pageA}}',
 571                                                 'torevid' => '{{REPL:revA1}}',
 572                                                 'tons' => 0,
 573                                                 'totitle' => 'ApiComparePagesTest A',
 574                                                 'touser' => '{{REPL:creator}}',
 575                                                 'touserid' => '{{REPL:creatorid}}',
 576                                                 'tocomment' => 'Test for ApiComparePagesTest: A 1',
 577                                                 'toparsedcomment' => 'Test for ApiComparePagesTest: A 1',
 578                                                 'next' => '{{REPL:revA2}}',
 579                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 580                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 581                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div> </div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div><ins class="diffchange diffchange-inline">A 1</ins></div></td></tr>' . "\n",
 582                                         ],
 583                                 ],
 584                         ],
 585                         'Relative diff, no next' => [
 586                                 [
 587                                         'fromrev' => '{{REPL:revA4}}',
 588                                         'torelative' => 'next',
 589                                         'prop' => 'ids|rel|diff|title|user|comment',
 590                                 ],
 591                                 [
 592                                         'warnings' => [
 593                                                 [
 594                                                         'code' => 'compare-no-next',
 595                                                         'module' => 'compare',
 596                                                 ],
 597                                         ],
 598                                         'compare' => [
 599                                                 'fromid' => '{{REPL:pageA}}',
 600                                                 'fromrevid' => '{{REPL:revA4}}',
 601                                                 'fromns' => 0,
 602                                                 'fromtitle' => 'ApiComparePagesTest A',
 603                                                 'fromuser' => '{{REPL:creator}}',
 604                                                 'fromuserid' => '{{REPL:creatorid}}',
 605                                                 'fromcomment' => 'Test for ApiComparePagesTest: A 4',
 606                                                 'fromparsedcomment' => 'Test for ApiComparePagesTest: A 4',
 607                                                 'prev' => '{{REPL:revA3}}',
 608                                                 'body' => '',
 609                                         ],
 610                                 ],
 611                         ],
 612                         'Diff for specific slots' => [
 613                                 // @todo Use a page with multiple slots here
 614                                 [
 615                                         'fromrev' => '{{REPL:revA1}}',
 616                                         'torev' => '{{REPL:revA3}}',
 617                                         'prop' => 'diff',
 618                                         'slots' => 'main',
 619                                 ],
 620                                 [
 621                                         'compare' => [
 622                                                 'bodies' => [
 623                                                         'main' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 624                                                                 . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 625                                                                 . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div>A <del class="diffchange diffchange-inline">1</del></div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div>A <ins class="diffchange diffchange-inline">3</ins></div></td></tr>' . "\n",
 626                                                 ],
 627                                         ],
 628                                 ],
 629                         ],
 630                         // @todo Add a test for diffing with a deleted slot. Deleting 'main' doesn't work.
 631
 632                         'Basic diff, deprecated text' => [
 633                                 [
 634                                         'fromtext' => 'From text',
 635                                         'fromcontentmodel' => 'wikitext',
 636                                         'totext' => 'To text {{subst:PAGENAME}}',
 637                                         'tocontentmodel' => 'wikitext',
 638                                 ],
 639                                 [
 640                                         'warnings' => self::makeDeprecationWarnings( 'fromtext', 'fromcontentmodel', 'totext', 'tocontentmodel' ),
 641                                         'compare' => [
 642                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 643                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 644                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div><del class="diffchange diffchange-inline">From </del>text</div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div><ins class="diffchange diffchange-inline">To </ins>text <ins class="diffchange diffchange-inline">{{subst:PAGENAME}}</ins></div></td></tr>' . "\n",
 645                                         ]
 646                                 ],
 647                         ],
 648                         'Basic diff, deprecated text 2' => [
 649                                 [
 650                                         'fromtext' => 'From text',
 651                                         'totext' => 'To text {{subst:PAGENAME}}',
 652                                         'tocontentmodel' => 'wikitext',
 653                                 ],
 654                                 [
 655                                         'warnings' => self::makeDeprecationWarnings( 'fromtext', 'totext', 'tocontentmodel' ),
 656                                         'compare' => [
 657                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 658                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 659                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div><del class="diffchange diffchange-inline">From </del>text</div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div><ins class="diffchange diffchange-inline">To </ins>text <ins class="diffchange diffchange-inline">{{subst:PAGENAME}}</ins></div></td></tr>' . "\n",
 660                                         ]
 661                                 ],
 662                         ],
 663                         'Basic diff, deprecated text, guessed model' => [
 664                                 [
 665                                         'fromtext' => 'From text',
 666                                         'totext' => 'To text',
 667                                 ],
 668                                 [
 669                                         'warnings' => array_merge( self::makeDeprecationWarnings( 'fromtext', 'totext' ), [
 670                                                 [ 'code' => 'compare-nocontentmodel', 'module' => 'compare' ],
 671                                         ] ),
 672                                         'compare' => [
 673                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 674                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 675                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div><del class="diffchange diffchange-inline">From </del>text</div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div><ins class="diffchange diffchange-inline">To </ins>text</div></td></tr>' . "\n",
 676                                         ]
 677                                 ],
 678                         ],
 679                         'Basic diff, deprecated text with title and PST' => [
 680                                 [
 681                                         'fromtext' => 'From text',
 682                                         'totitle' => 'Test',
 683                                         'totext' => 'To text {{subst:PAGENAME}}',
 684                                         'topst' => true,
 685                                 ],
 686                                 [
 687                                         'warnings' => self::makeDeprecationWarnings( 'fromtext', 'totext' ),
 688                                         'compare' => [
 689                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 690                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 691                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div><del class="diffchange diffchange-inline">From </del>text</div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div><ins class="diffchange diffchange-inline">To </ins>text <ins class="diffchange diffchange-inline">Test</ins></div></td></tr>' . "\n",
 692                                         ]
 693                                 ],
 694                         ],
 695                         'Basic diff, deprecated text with page ID and PST' => [
 696                                 [
 697                                         'fromtext' => 'From text',
 698                                         'toid' => '{{REPL:pageB}}',
 699                                         'totext' => 'To text {{subst:PAGENAME}}',
 700                                         'topst' => true,
 701                                 ],
 702                                 [
 703                                         'warnings' => self::makeDeprecationWarnings( 'fromtext', 'totext' ),
 704                                         'compare' => [
 705                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 706                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 707                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div><del class="diffchange diffchange-inline">From </del>text</div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div><ins class="diffchange diffchange-inline">To </ins>text <ins class="diffchange diffchange-inline">ApiComparePagesTest B</ins></div></td></tr>' . "\n",
 708                                         ]
 709                                 ],
 710                         ],
 711                         'Basic diff, deprecated text with revision and PST' => [
 712                                 [
 713                                         'fromtext' => 'From text',
 714                                         'torev' => '{{REPL:revB2}}',
 715                                         'totext' => 'To text {{subst:PAGENAME}}',
 716                                         'topst' => true,
 717                                 ],
 718                                 [
 719                                         'warnings' => self::makeDeprecationWarnings( 'fromtext', 'totext' ),
 720                                         'compare' => [
 721                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 722                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 723                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div><del class="diffchange diffchange-inline">From </del>text</div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div><ins class="diffchange diffchange-inline">To </ins>text <ins class="diffchange diffchange-inline">ApiComparePagesTest B</ins></div></td></tr>' . "\n",
 724                                         ]
 725                                 ],
 726                         ],
 727                         'Basic diff, deprecated text with deleted revision and PST' => [
 728                                 [
 729                                         'fromtext' => 'From text',
 730                                         'torev' => '{{REPL:revC2}}',
 731                                         'totext' => 'To text {{subst:PAGENAME}}',
 732                                         'topst' => true,
 733                                 ],
 734                                 [
 735                                         'warnings' => self::makeDeprecationWarnings( 'fromtext', 'totext' ),
 736                                         'compare' => [
 737                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 738                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 739                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div><del class="diffchange diffchange-inline">From </del>text</div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div><ins class="diffchange diffchange-inline">To </ins>text <ins class="diffchange diffchange-inline">ApiComparePagesTest C</ins></div></td></tr>' . "\n",
 740                                         ]
 741                                 ],
 742                                 false, true
 743                         ],
 744                         'Basic diff, test with deprecated sections' => [
 745                                 [
 746                                         'fromtitle' => 'ApiComparePagesTest F',
 747                                         'fromsection' => 1,
 748                                         'totext' => "== Section 1 ==\nTo text\n\n== Section 2 ==\nTo text?",
 749                                         'tosection' => 2,
 750                                 ],
 751                                 [
 752                                         'warnings' => self::makeDeprecationWarnings( 'fromsection', 'totext', 'tosection' ),
 753                                         'compare' => [
 754                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 755                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 756                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div>== Section <del class="diffchange diffchange-inline">1 </del>==</div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div>== Section <ins class="diffchange diffchange-inline">2 </ins>==</div></td></tr>' . "\n"
 757                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div><del class="diffchange diffchange-inline">F 1.1</del></div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div><ins class="diffchange diffchange-inline">To text?</ins></div></td></tr>' . "\n",
 758                                                 'fromid' => '{{REPL:pageF}}',
 759                                                 'fromrevid' => '{{REPL:revF1}}',
 760                                                 'fromns' => '0',
 761                                                 'fromtitle' => 'ApiComparePagesTest F',
 762                                         ]
 763                                 ],
 764                         ],
 765                         'Basic diff, test with deprecated sections and revdel, non-sysop' => [
 766                                 [
 767                                         'fromrev' => '{{REPL:revB2}}',
 768                                         'fromsection' => 0,
 769                                         'torev' => '{{REPL:revB4}}',
 770                                         'tosection' => 0,
 771                                 ],
 772                                 [],
 773                                 'missingcontent'
 774                         ],
 775                         'Basic diff, test with deprecated sections and revdel, sysop' => [
 776                                 [
 777                                         'fromrev' => '{{REPL:revB2}}',
 778                                         'fromsection' => 0,
 779                                         'torev' => '{{REPL:revB4}}',
 780                                         'tosection' => 0,
 781                                 ],
 782                                 [
 783                                         'warnings' => self::makeDeprecationWarnings( 'fromsection', 'tosection' ),
 784                                         'compare' => [
 785                                                 'body' => '<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>' . "\n"
 786                                                         . '<td colspan="2" class="diff-lineno">Line 1:</td></tr>' . "\n"
 787                                                         . '<tr><td class=\'diff-marker\'>−</td><td class=\'diff-deletedline\'><div>B <del class="diffchange diffchange-inline">2</del></div></td><td class=\'diff-marker\'>+</td><td class=\'diff-addedline\'><div>B <ins class="diffchange diffchange-inline">4</ins></div></td></tr>' . "\n",
 788                                                 'fromid' => '{{REPL:pageB}}',
 789                                                 'fromrevid' => '{{REPL:revB2}}',
 790                                                 'fromns' => 0,
 791                                                 'fromtitle' => 'ApiComparePagesTest B',
 792                                                 'fromtexthidden' => true,
 793                                                 'fromuserhidden' => true,
 794                                                 'fromcommenthidden' => true,
 795                                                 'toid' => '{{REPL:pageB}}',
 796                                                 'torevid' => '{{REPL:revB4}}',
 797                                                 'tons' => 0,
 798                                                 'totitle' => 'ApiComparePagesTest B',
 799                                         ]
 800                                 ],
 801                                 false, true,
 802                         ],
 803
 804                         'Error, missing title' => [
 805                                 [
 806                                         'fromtitle' => 'ApiComparePagesTest X',
 807                                         'totitle' => 'ApiComparePagesTest B',
 808                                 ],
 809                                 [],
 810                                 'missingtitle',
 811                         ],
 812                         'Error, invalid title' => [
 813                                 [
 814                                         'fromtitle' => '<bad>',
 815                                         'totitle' => 'ApiComparePagesTest B',
 816                                 ],
 817                                 [],
 818                                 'invalidtitle',
 819                         ],
 820                         'Error, missing page ID' => [
 821                                 [
 822                                         'fromid' => 8817900,
 823                                         'totitle' => 'ApiComparePagesTest B',
 824                                 ],
 825                                 [],
 826                                 'nosuchpageid',
 827                         ],
 828                         'Error, page with missing revision' => [
 829                                 [
 830                                         'fromtitle' => 'ApiComparePagesTest D',
 831                                         'totitle' => 'ApiComparePagesTest B',
 832                                 ],
 833                                 [],
 834                                 'nosuchrevid',
 835                         ],
 836                         'Error, page with no revision' => [
 837                                 [
 838                                         'fromtitle' => 'ApiComparePagesTest E',
 839                                         'totitle' => 'ApiComparePagesTest B',
 840                                 ],
 841                                 [],
 842                                 'nosuchrevid',
 843                         ],
 844                         'Error, bad rev ID' => [
 845                                 [
 846                                         'fromrev' => 8817900,
 847                                         'totitle' => 'ApiComparePagesTest B',
 848                                 ],
 849                                 [],
 850                                 'nosuchrevid',
 851                         ],
 852                         'Error, deleted revision ID, non-sysop' => [
 853                                 [
 854                                         'fromrev' => '{{REPL:revA2}}',
 855                                         'torev' => '{{REPL:revC2}}',
 856                                 ],
 857                                 [],
 858                                 'nosuchrevid',
 859                         ],
 860                         'Error, deleted revision ID and torelative=prev' => [
 861                                 [
 862                                         'fromrev' => '{{REPL:revC2}}',
 863                                         'torelative' => 'prev',
 864                                 ],
 865                                 [],
 866                                 'compare-relative-to-deleted', true
 867                         ],
 868                         'Error, deleted revision ID and torelative=next' => [
 869                                 [
 870                                         'fromrev' => '{{REPL:revC2}}',
 871                                         'torelative' => 'next',
 872                                 ],
 873                                 [],
 874                                 'compare-relative-to-deleted', true
 875                         ],
 876                         'Deleted revision ID and torelative=cur' => [
 877                                 [
 878                                         'fromrev' => '{{REPL:revC2}}',
 879                                         'torelative' => 'cur',
 880                                 ],
 881                                 [],
 882                                 'nosuchrevid', true
 883                         ],
 884                         'Error, revision-deleted content' => [
 885                                 [
 886                                         'fromrev' => '{{REPL:revA2}}',
 887                                         'torev' => '{{REPL:revB2}}',
 888                                 ],
 889                                 [],
 890                                 'missingcontent',
 891                         ],
 892                         'Error, text with no title and PST' => [
 893                                 [
 894                                         'fromtext' => 'From text',
 895                                         'totext' => 'To text {{subst:PAGENAME}}',
 896                                         'topst' => true,
 897                                 ],
 898                                 [],
 899                                 'compare-no-title',
 900                         ],
 901                         'Error, test with invalid from section ID' => [
 902                                 [
 903                                         'fromtitle' => 'ApiComparePagesTest F',
 904                                         'fromsection' => 5,
 905                                         'totext' => "== Section 1 ==\nTo text\n\n== Section 2 ==\nTo text?",
 906                                         'tosection' => 2,
 907                                 ],
 908                                 [],
 909                                 'nosuchfromsection',
 910                         ],
 911                         'Error, test with invalid to section ID' => [
 912                                 [
 913                                         'fromtitle' => 'ApiComparePagesTest F',
 914                                         'fromsection' => 1,
 915                                         'totext' => "== Section 1 ==\nTo text\n\n== Section 2 ==\nTo text?",
 916                                         'tosection' => 5,
 917                                 ],
 918                                 [],
 919                                 'nosuchtosection',
 920                         ],
 921                         'Error, Relative diff, no from revision' => [
 922                                 [
 923                                         'fromtext' => 'Foo',
 924                                         'torelative' => 'cur',
 925                                         'prop' => 'ids',
 926                                 ],
 927                                 [],
 928                                 'compare-relative-to-nothing'
 929                         ],
 930                         'Error, Relative diff, cur with no current revision' => [
 931                                 [
 932                                         'fromrev' => '{{REPL:revE2}}',
 933                                         'torelative' => 'cur',
 934                                         'prop' => 'ids',
 935                                 ],
 936                                 [],
 937                                 'nosuchrevid'
 938                         ],
 939                         'Error, Relative diff, next revdeleted' => [
 940                                 [
 941                                         'fromrev' => '{{REPL:revB1}}',
 942                                         'torelative' => 'next',
 943                                         'prop' => 'ids',
 944                                 ],
 945                                 [],
 946                                 'missingcontent'
 947                         ],
 948                         'Error, Relative diff, prev revdeleted' => [
 949                                 [
 950                                         'fromrev' => '{{REPL:revB3}}',
 951                                         'torelative' => 'prev',
 952                                         'prop' => 'ids',
 953                                 ],
 954                                 [],
 955                                 'missingcontent'
 956                         ],
 957                         'Error, section diff with no revision' => [
 958                                 [
 959                                         'fromtitle' => 'ApiComparePagesTest F',
 960                                         'toslots' => 'main',
 961                                         'totext-main' => "== Section 1 ==\nTo text?",
 962                                         'tosection-main' => 1,
 963                                 ],
 964                                 [],
 965                                 'compare-notorevision',
 966                         ],
 967                         'Error, section diff with revdeleted revision' => [
 968                                 [
 969                                         'fromtitle' => 'ApiComparePagesTest F',
 970                                         'torev' => '{{REPL:revB2}}',
 971                                         'toslots' => 'main',
 972                                         'totext-main' => "== Section 1 ==\nTo text?",
 973                                         'tosection-main' => 1,
 974                                 ],
 975                                 [],
 976                                 'missingcontent',
 977                         ],
 978                         'Error, section diff with a content model not supporting sections' => [
 979                                 [
 980                                         'fromtitle' => 'ApiComparePagesTest G',
 981                                         'torev' => '{{REPL:revG1}}',
 982                                         'toslots' => 'main',
 983                                         'totext-main' => "== Section 1 ==\nTo text?",
 984                                         'tosection-main' => 1,
 985                                 ],
 986                                 [],
 987                                 'sectionsnotsupported',
 988                         ],
 989                         'Error, section diff with bad content model' => [
 990                                 [
 991                                         'fromtitle' => 'ApiComparePagesTest F',
 992                                         'torev' => '{{REPL:revF1}}',
 993                                         'toslots' => 'main',
 994                                         'totext-main' => "== Section 1 ==\nTo text?",
 995                                         'tosection-main' => 1,
 996                                         'tocontentmodel-main' => CONTENT_MODEL_TEXT,
 997                                 ],
 998                                 [],
 999                                 'sectionreplacefailed',
1000                         ],
1001                         'Error, deleting the main slot' => [
1002                                 [
1003                                         'fromtitle' => 'ApiComparePagesTest A',
1004                                         'totitle' => 'ApiComparePagesTest A',
1005                                         'toslots' => 'main',
1006                                 ],
1007                                 [],
1008                                 'compare-maintextrequired',
1009                         ],
1010                         // @todo Add a test for using 'tosection-foo' without 'totext-foo' (can't do it with main)
1011                 ];
1012                 // phpcs:enable
1013         }
1014 }