tests/phpunit/includes/api/ApiMainTest.php

   1 <?php
   2
   3 /**
   4  * @group API
   5  * @group medium
   6  *
   7  * @covers ApiMain
   8  */
   9 class ApiMainTest extends ApiTestCase {
  10
  11         /**
  12          * Test that the API will accept a FauxRequest and execute.
  13          */
  14         public function testApi() {
  15                 $api = new ApiMain(
  16                         new FauxRequest( [ 'action' => 'query', 'meta' => 'siteinfo' ] )
  17                 );
  18                 $api->execute();
  19                 $data = $api->getResult()->getResultData();
  20                 $this->assertInternalType( 'array', $data );
  21                 $this->assertArrayHasKey( 'query', $data );
  22         }
  23
  24         public static function provideAssert() {
  25                 return [
  26                         [ false, [], 'user', 'assertuserfailed' ],
  27                         [ true, [], 'user', false ],
  28                         [ true, [], 'bot', 'assertbotfailed' ],
  29                         [ true, [ 'bot' ], 'user', false ],
  30                         [ true, [ 'bot' ], 'bot', false ],
  31                 ];
  32         }
  33
  34         /**
  35          * Tests the assert={user|bot} functionality
  36          *
  37          * @covers ApiMain::checkAsserts
  38          * @dataProvider provideAssert
  39          * @param bool $registered
  40          * @param array $rights
  41          * @param string $assert
  42          * @param string|bool $error False if no error expected
  43          */
  44         public function testAssert( $registered, $rights, $assert, $error ) {
  45                 $user = new User();
  46                 if ( $registered ) {
  47                         $user->setId( 1 );
  48                 }
  49                 $user->mRights = $rights;
  50                 try {
  51                         $this->doApiRequest( [
  52                                 'action' => 'query',
  53                                 'assert' => $assert,
  54                         ], null, null, $user );
  55                         $this->assertFalse( $error ); // That no error was expected
  56                 } catch ( ApiUsageException $e ) {
  57                         $this->assertTrue( self::apiExceptionHasCode( $e, $error ) );
  58                 }
  59         }
  60
  61         /**
  62          * Tests the assertuser= functionality
  63          *
  64          * @covers ApiMain::checkAsserts
  65          */
  66         public function testAssertUser() {
  67                 $user = $this->getTestUser()->getUser();
  68                 $this->doApiRequest( [
  69                         'action' => 'query',
  70                         'assertuser' => $user->getName(),
  71                 ], null, null, $user );
  72
  73                 try {
  74                         $this->doApiRequest( [
  75                                 'action' => 'query',
  76                                 'assertuser' => $user->getName() . 'X',
  77                         ], null, null, $user );
  78                         $this->fail( 'Expected exception not thrown' );
  79                 } catch ( ApiUsageException $e ) {
  80                         $this->assertTrue( self::apiExceptionHasCode( $e, 'assertnameduserfailed' ) );
  81                 }
  82         }
  83
  84         /**
  85          * Test if all classes in the main module manager exists
  86          */
  87         public function testClassNamesInModuleManager() {
  88                 global $wgAutoloadLocalClasses, $wgAutoloadClasses;
  89
  90                 // wgAutoloadLocalClasses has precedence, just like in includes/AutoLoader.php
  91                 $classes = $wgAutoloadLocalClasses + $wgAutoloadClasses;
  92
  93                 $api = new ApiMain(
  94                         new FauxRequest( [ 'action' => 'query', 'meta' => 'siteinfo' ] )
  95                 );
  96                 $modules = $api->getModuleManager()->getNamesWithClasses();
  97                 foreach ( $modules as $name => $class ) {
  98                         $this->assertArrayHasKey(
  99                                 $class,
 100                                 $classes,
 101                                 'Class ' . $class . ' for api module ' . $name . ' not in autoloader (with exact case)'
 102                         );
 103                 }
 104         }
 105
 106         /**
 107          * Test HTTP precondition headers
 108          *
 109          * @covers ApiMain::checkConditionalRequestHeaders
 110          * @dataProvider provideCheckConditionalRequestHeaders
 111          * @param array $headers HTTP headers
 112          * @param array $conditions Return data for ApiBase::getConditionalRequestData
 113          * @param int $status Expected response status
 114          * @param bool $post Request is a POST
 115          */
 116         public function testCheckConditionalRequestHeaders(
 117                 $headers, $conditions, $status, $post = false
 118         ) {
 119                 $request = new FauxRequest( [ 'action' => 'query', 'meta' => 'siteinfo' ], $post );
 120                 $request->setHeaders( $headers );
 121                 $request->response()->statusHeader( 200 ); // Why doesn't it default?
 122
 123                 $context = $this->apiContext->newTestContext( $request, null );
 124                 $api = new ApiMain( $context );
 125                 $priv = TestingAccessWrapper::newFromObject( $api );
 126                 $priv->mInternalMode = false;
 127
 128                 $module = $this->getMockBuilder( 'ApiBase' )
 129                         ->setConstructorArgs( [ $api, 'mock' ] )
 130                         ->setMethods( [ 'getConditionalRequestData' ] )
 131                         ->getMockForAbstractClass();
 132                 $module->expects( $this->any() )
 133                         ->method( 'getConditionalRequestData' )
 134                         ->will( $this->returnCallback( function ( $condition ) use ( $conditions ) {
 135                                 return isset( $conditions[$condition] ) ? $conditions[$condition] : null;
 136                         } ) );
 137
 138                 $ret = $priv->checkConditionalRequestHeaders( $module );
 139
 140                 $this->assertSame( $status, $request->response()->getStatusCode() );
 141                 $this->assertSame( $status === 200, $ret );
 142         }
 143
 144         public static function provideCheckConditionalRequestHeaders() {
 145                 $now = time();
 146
 147                 return [
 148                         // Non-existing from module is ignored
 149                         [ [ 'If-None-Match' => '"foo", "bar"' ], [], 200 ],
 150                         [ [ 'If-Modified-Since' => 'Tue, 18 Aug 2015 00:00:00 GMT' ], [], 200 ],
 151
 152                         // No headers
 153                         [
 154                                 [],
 155                                 [
 156                                         'etag' => '""',
 157                                         'last-modified' => '20150815000000',
 158                                 ],
 159                                 200
 160                         ],
 161
 162                         // Basic If-None-Match
 163                         [ [ 'If-None-Match' => '"foo", "bar"' ], [ 'etag' => '"bar"' ], 304 ],
 164                         [ [ 'If-None-Match' => '"foo", "bar"' ], [ 'etag' => '"baz"' ], 200 ],
 165                         [ [ 'If-None-Match' => '"foo"' ], [ 'etag' => 'W/"foo"' ], 304 ],
 166                         [ [ 'If-None-Match' => 'W/"foo"' ], [ 'etag' => '"foo"' ], 304 ],
 167                         [ [ 'If-None-Match' => 'W/"foo"' ], [ 'etag' => 'W/"foo"' ], 304 ],
 168
 169                         // Pointless, but supported
 170                         [ [ 'If-None-Match' => '*' ], [], 304 ],
 171
 172                         // Basic If-Modified-Since
 173                         [ [ 'If-Modified-Since' => wfTimestamp( TS_RFC2822, $now ) ],
 174                                 [ 'last-modified' => wfTimestamp( TS_MW, $now - 1 ) ], 304 ],
 175                         [ [ 'If-Modified-Since' => wfTimestamp( TS_RFC2822, $now ) ],
 176                                 [ 'last-modified' => wfTimestamp( TS_MW, $now ) ], 304 ],
 177                         [ [ 'If-Modified-Since' => wfTimestamp( TS_RFC2822, $now ) ],
 178                                 [ 'last-modified' => wfTimestamp( TS_MW, $now + 1 ) ], 200 ],
 179
 180                         // If-Modified-Since ignored when If-None-Match is given too
 181                         [ [ 'If-None-Match' => '""', 'If-Modified-Since' => wfTimestamp( TS_RFC2822, $now ) ],
 182                                 [ 'etag' => '"x"', 'last-modified' => wfTimestamp( TS_MW, $now - 1 ) ], 200 ],
 183                         [ [ 'If-None-Match' => '""', 'If-Modified-Since' => wfTimestamp( TS_RFC2822, $now ) ],
 184                                 [ 'last-modified' => wfTimestamp( TS_MW, $now - 1 ) ], 304 ],
 185
 186                         // Ignored for POST
 187                         [ [ 'If-None-Match' => '"foo", "bar"' ], [ 'etag' => '"bar"' ], 200, true ],
 188                         [ [ 'If-Modified-Since' => wfTimestamp( TS_RFC2822, $now ) ],
 189                                 [ 'last-modified' => wfTimestamp( TS_MW, $now - 1 ) ], 200, true ],
 190
 191                         // Other date formats allowed by the RFC
 192                         [ [ 'If-Modified-Since' => gmdate( 'l, d-M-y H:i:s', $now ) . ' GMT' ],
 193                                 [ 'last-modified' => wfTimestamp( TS_MW, $now - 1 ) ], 304 ],
 194                         [ [ 'If-Modified-Since' => gmdate( 'D M j H:i:s Y', $now ) ],
 195                                 [ 'last-modified' => wfTimestamp( TS_MW, $now - 1 ) ], 304 ],
 196
 197                         // Old browser extension to HTTP/1.0
 198                         [ [ 'If-Modified-Since' => wfTimestamp( TS_RFC2822, $now ) . '; length=123' ],
 199                                 [ 'last-modified' => wfTimestamp( TS_MW, $now - 1 ) ], 304 ],
 200
 201                         // Invalid date formats should be ignored
 202                         [ [ 'If-Modified-Since' => gmdate( 'Y-m-d H:i:s', $now ) . ' GMT' ],
 203                                 [ 'last-modified' => wfTimestamp( TS_MW, $now - 1 ) ], 200 ],
 204                 ];
 205         }
 206
 207         /**
 208          * Test conditional headers output
 209          * @dataProvider provideConditionalRequestHeadersOutput
 210          * @param array $conditions Return data for ApiBase::getConditionalRequestData
 211          * @param array $headers Expected output headers
 212          * @param bool $isError $isError flag
 213          * @param bool $post Request is a POST
 214          */
 215         public function testConditionalRequestHeadersOutput(
 216                 $conditions, $headers, $isError = false, $post = false
 217         ) {
 218                 $request = new FauxRequest( [ 'action' => 'query', 'meta' => 'siteinfo' ], $post );
 219                 $response = $request->response();
 220
 221                 $api = new ApiMain( $request );
 222                 $priv = TestingAccessWrapper::newFromObject( $api );
 223                 $priv->mInternalMode = false;
 224
 225                 $module = $this->getMockBuilder( 'ApiBase' )
 226                         ->setConstructorArgs( [ $api, 'mock' ] )
 227                         ->setMethods( [ 'getConditionalRequestData' ] )
 228                         ->getMockForAbstractClass();
 229                 $module->expects( $this->any() )
 230                         ->method( 'getConditionalRequestData' )
 231                         ->will( $this->returnCallback( function ( $condition ) use ( $conditions ) {
 232                                 return isset( $conditions[$condition] ) ? $conditions[$condition] : null;
 233                         } ) );
 234                 $priv->mModule = $module;
 235
 236                 $priv->sendCacheHeaders( $isError );
 237
 238                 foreach ( [ 'Last-Modified', 'ETag' ] as $header ) {
 239                         $this->assertEquals(
 240                                 isset( $headers[$header] ) ? $headers[$header] : null,
 241                                 $response->getHeader( $header ),
 242                                 $header
 243                         );
 244                 }
 245         }
 246
 247         public static function provideConditionalRequestHeadersOutput() {
 248                 return [
 249                         [
 250                                 [],
 251                                 []
 252                         ],
 253                         [
 254                                 [ 'etag' => '"foo"' ],
 255                                 [ 'ETag' => '"foo"' ]
 256                         ],
 257                         [
 258                                 [ 'last-modified' => '20150818000102' ],
 259                                 [ 'Last-Modified' => 'Tue, 18 Aug 2015 00:01:02 GMT' ]
 260                         ],
 261                         [
 262                                 [ 'etag' => '"foo"', 'last-modified' => '20150818000102' ],
 263                                 [ 'ETag' => '"foo"', 'Last-Modified' => 'Tue, 18 Aug 2015 00:01:02 GMT' ]
 264                         ],
 265                         [
 266                                 [ 'etag' => '"foo"', 'last-modified' => '20150818000102' ],
 267                                 [],
 268                                 true,
 269                         ],
 270                         [
 271                                 [ 'etag' => '"foo"', 'last-modified' => '20150818000102' ],
 272                                 [],
 273                                 false,
 274                                 true,
 275                         ],
 276                 ];
 277         }
 278
 279         /**
 280          * @covers ApiMain::lacksSameOriginSecurity
 281          */
 282         public function testLacksSameOriginSecurity() {
 283                 // Basic test
 284                 $main = new ApiMain( new FauxRequest( [ 'action' => 'query', 'meta' => 'siteinfo' ] ) );
 285                 $this->assertFalse( $main->lacksSameOriginSecurity(), 'Basic test, should have security' );
 286
 287                 // JSONp
 288                 $main = new ApiMain(
 289                         new FauxRequest( [ 'action' => 'query', 'format' => 'xml', 'callback' => 'foo' ] )
 290                 );
 291                 $this->assertTrue( $main->lacksSameOriginSecurity(), 'JSONp, should lack security' );
 292
 293                 // Header
 294                 $request = new FauxRequest( [ 'action' => 'query', 'meta' => 'siteinfo' ] );
 295                 $request->setHeader( 'TrEaT-As-UnTrUsTeD', '' ); // With falsey value!
 296                 $main = new ApiMain( $request );
 297                 $this->assertTrue( $main->lacksSameOriginSecurity(), 'Header supplied, should lack security' );
 298
 299                 // Hook
 300                 $this->mergeMwGlobalArrayValue( 'wgHooks', [
 301                         'RequestHasSameOriginSecurity' => [ function () {
 302                                 return false;
 303                         } ]
 304                 ] );
 305                 $main = new ApiMain( new FauxRequest( [ 'action' => 'query', 'meta' => 'siteinfo' ] ) );
 306                 $this->assertTrue( $main->lacksSameOriginSecurity(), 'Hook, should lack security' );
 307         }
 308
 309         /**
 310          * Test proper creation of the ApiErrorFormatter
 311          * @covers ApiMain::__construct
 312          * @dataProvider provideApiErrorFormatterCreation
 313          * @param array $request Request parameters
 314          * @param array $expect Expected data
 315          *  - uselang: ApiMain language
 316          *  - class: ApiErrorFormatter class
 317          *  - lang: ApiErrorFormatter language
 318          *  - format: ApiErrorFormatter format
 319          *  - usedb: ApiErrorFormatter use-database flag
 320          */
 321         public function testApiErrorFormatterCreation( array $request, array $expect ) {
 322                 $context = new RequestContext();
 323                 $context->setRequest( new FauxRequest( $request ) );
 324                 $context->setLanguage( 'ru' );
 325
 326                 $main = new ApiMain( $context );
 327                 $formatter = $main->getErrorFormatter();
 328                 $wrappedFormatter = TestingAccessWrapper::newFromObject( $formatter );
 329
 330                 $this->assertSame( $expect['uselang'], $main->getLanguage()->getCode() );
 331                 $this->assertInstanceOf( $expect['class'], $formatter );
 332                 $this->assertSame( $expect['lang'], $formatter->getLanguage()->getCode() );
 333                 $this->assertSame( $expect['format'], $wrappedFormatter->format );
 334                 $this->assertSame( $expect['usedb'], $wrappedFormatter->useDB );
 335         }
 336
 337         public static function provideApiErrorFormatterCreation() {
 338                 global $wgContLang;
 339
 340                 return [
 341                         'Default (BC)' => [ [], [
 342                                 'uselang' => 'ru',
 343                                 'class' => ApiErrorFormatter_BackCompat::class,
 344                                 'lang' => 'en',
 345                                 'format' => 'none',
 346                                 'usedb' => false,
 347                         ] ],
 348                         'BC ignores fields' => [ [ 'errorlang' => 'de', 'errorsuselocal' => 1 ], [
 349                                 'uselang' => 'ru',
 350                                 'class' => ApiErrorFormatter_BackCompat::class,
 351                                 'lang' => 'en',
 352                                 'format' => 'none',
 353                                 'usedb' => false,
 354                         ] ],
 355                         'Explicit BC' => [ [ 'errorformat' => 'bc' ], [
 356                                 'uselang' => 'ru',
 357                                 'class' => ApiErrorFormatter_BackCompat::class,
 358                                 'lang' => 'en',
 359                                 'format' => 'none',
 360                                 'usedb' => false,
 361                         ] ],
 362                         'Basic' => [ [ 'errorformat' => 'wikitext' ], [
 363                                 'uselang' => 'ru',
 364                                 'class' => ApiErrorFormatter::class,
 365                                 'lang' => 'ru',
 366                                 'format' => 'wikitext',
 367                                 'usedb' => false,
 368                         ] ],
 369                         'Follows uselang' => [ [ 'uselang' => 'fr', 'errorformat' => 'plaintext' ], [
 370                                 'uselang' => 'fr',
 371                                 'class' => ApiErrorFormatter::class,
 372                                 'lang' => 'fr',
 373                                 'format' => 'plaintext',
 374                                 'usedb' => false,
 375                         ] ],
 376                         'Explicitly follows uselang' => [
 377                                 [ 'uselang' => 'fr', 'errorlang' => 'uselang', 'errorformat' => 'plaintext' ],
 378                                 [
 379                                         'uselang' => 'fr',
 380                                         'class' => ApiErrorFormatter::class,
 381                                         'lang' => 'fr',
 382                                         'format' => 'plaintext',
 383                                         'usedb' => false,
 384                                 ]
 385                         ],
 386                         'uselang=content' => [
 387                                 [ 'uselang' => 'content', 'errorformat' => 'plaintext' ],
 388                                 [
 389                                         'uselang' => $wgContLang->getCode(),
 390                                         'class' => ApiErrorFormatter::class,
 391                                         'lang' => $wgContLang->getCode(),
 392                                         'format' => 'plaintext',
 393                                         'usedb' => false,
 394                                 ]
 395                         ],
 396                         'errorlang=content' => [
 397                                 [ 'errorlang' => 'content', 'errorformat' => 'plaintext' ],
 398                                 [
 399                                         'uselang' => 'ru',
 400                                         'class' => ApiErrorFormatter::class,
 401                                         'lang' => $wgContLang->getCode(),
 402                                         'format' => 'plaintext',
 403                                         'usedb' => false,
 404                                 ]
 405                         ],
 406                         'Explicit parameters' => [
 407                                 [ 'errorlang' => 'de', 'errorformat' => 'html', 'errorsuselocal' => 1 ],
 408                                 [
 409                                         'uselang' => 'ru',
 410                                         'class' => ApiErrorFormatter::class,
 411                                         'lang' => 'de',
 412                                         'format' => 'html',
 413                                         'usedb' => true,
 414                                 ]
 415                         ],
 416                         'Explicit parameters override uselang' => [
 417                                 [ 'errorlang' => 'de', 'uselang' => 'fr', 'errorformat' => 'raw' ],
 418                                 [
 419                                         'uselang' => 'fr',
 420                                         'class' => ApiErrorFormatter::class,
 421                                         'lang' => 'de',
 422                                         'format' => 'raw',
 423                                         'usedb' => false,
 424                                 ]
 425                         ],
 426                         'Bogus language doesn\'t explode' => [
 427                                 [ 'errorlang' => '<bogus1>', 'uselang' => '<bogus2>', 'errorformat' => 'none' ],
 428                                 [
 429                                         'uselang' => 'en',
 430                                         'class' => ApiErrorFormatter::class,
 431                                         'lang' => 'en',
 432                                         'format' => 'none',
 433                                         'usedb' => false,
 434                                 ]
 435                         ],
 436                         'Bogus format doesn\'t explode' => [ [ 'errorformat' => 'bogus' ], [
 437                                 'uselang' => 'ru',
 438                                 'class' => ApiErrorFormatter_BackCompat::class,
 439                                 'lang' => 'en',
 440                                 'format' => 'none',
 441                                 'usedb' => false,
 442                         ] ],
 443                 ];
 444         }
 445
 446         /**
 447          * @covers ApiMain::errorMessagesFromException
 448          * @covers ApiMain::substituteResultWithError
 449          * @dataProvider provideExceptionErrors
 450          * @param Exception $exception
 451          * @param array $expectReturn
 452          * @param array $expectResult
 453          */
 454         public function testExceptionErrors( $error, $expectReturn, $expectResult ) {
 455                 $context = new RequestContext();
 456                 $context->setRequest( new FauxRequest( [ 'errorformat' => 'plaintext' ] ) );
 457                 $context->setLanguage( 'en' );
 458                 $context->setConfig( new MultiConfig( [
 459                         new HashConfig( [ 'ShowHostnames' => true, 'ShowSQLErrors' => false ] ),
 460                         $context->getConfig()
 461                 ] ) );
 462
 463                 $main = new ApiMain( $context );
 464                 $main->addWarning( new RawMessage( 'existing warning' ), 'existing-warning' );
 465                 $main->addError( new RawMessage( 'existing error' ), 'existing-error' );
 466
 467                 $ret = TestingAccessWrapper::newFromObject( $main )->substituteResultWithError( $error );
 468                 $this->assertSame( $expectReturn, $ret );
 469
 470                 // PHPUnit sometimes adds some SplObjectStorage garbage to the arrays,
 471                 // so let's try ->assertEquals().
 472                 $this->assertEquals(
 473                         $expectResult,
 474                         $main->getResult()->getResultData( [], [ 'Strip' => 'all' ] )
 475                 );
 476         }
 477
 478         // Not static so $this->getMock() can be used
 479         public function provideExceptionErrors() {
 480                 $reqId = WebRequest::getRequestId();
 481                 $doclink = wfExpandUrl( wfScript( 'api' ) );
 482
 483                 $ex = new InvalidArgumentException( 'Random exception' );
 484                 $trace = wfMessage( 'api-exception-trace',
 485                         get_class( $ex ),
 486                         $ex->getFile(),
 487                         $ex->getLine(),
 488                         MWExceptionHandler::getRedactedTraceAsString( $ex )
 489                 )->inLanguage( 'en' )->useDatabase( false )->text();
 490
 491                 $dbex = new DBQueryError( $this->getMock( 'IDatabase' ), 'error', 1234, 'SELECT 1', __METHOD__ );
 492                 $dbtrace = wfMessage( 'api-exception-trace',
 493                         get_class( $dbex ),
 494                         $dbex->getFile(),
 495                         $dbex->getLine(),
 496                         MWExceptionHandler::getRedactedTraceAsString( $dbex )
 497                 )->inLanguage( 'en' )->useDatabase( false )->text();
 498
 499                 $apiEx1 = new ApiUsageException( null,
 500                         StatusValue::newFatal( new ApiRawMessage( 'An error', 'sv-error1' ) ) );
 501                 TestingAccessWrapper::newFromObject( $apiEx1 )->modulePath = 'foo+bar';
 502                 $apiEx1->getStatusValue()->warning( new ApiRawMessage( 'A warning', 'sv-warn1' ) );
 503                 $apiEx1->getStatusValue()->warning( new ApiRawMessage( 'Another warning', 'sv-warn2' ) );
 504                 $apiEx1->getStatusValue()->fatal( new ApiRawMessage( 'Another error', 'sv-error2' ) );
 505
 506                 return [
 507                         [
 508                                 $ex,
 509                                 [ 'existing-error', 'internal_api_error_InvalidArgumentException' ],
 510                                 [
 511                                         'warnings' => [
 512                                                 [ 'code' => 'existing-warning', 'text' => 'existing warning', 'module' => 'main' ],
 513                                         ],
 514                                         'errors' => [
 515                                                 [ 'code' => 'existing-error', 'text' => 'existing error', 'module' => 'main' ],
 516                                                 [
 517                                                         'code' => 'internal_api_error_InvalidArgumentException',
 518                                                         'text' => "[$reqId] Exception caught: Random exception",
 519                                                 ]
 520                                         ],
 521                                         'trace' => $trace,
 522                                         'servedby' => wfHostname(),
 523                                 ]
 524                         ],
 525                         [
 526                                 $dbex,
 527                                 [ 'existing-error', 'internal_api_error_DBQueryError' ],
 528                                 [
 529                                         'warnings' => [
 530                                                 [ 'code' => 'existing-warning', 'text' => 'existing warning', 'module' => 'main' ],
 531                                         ],
 532                                         'errors' => [
 533                                                 [ 'code' => 'existing-error', 'text' => 'existing error', 'module' => 'main' ],
 534                                                 [
 535                                                         'code' => 'internal_api_error_DBQueryError',
 536                                                         'text' => "[$reqId] Database query error.",
 537                                                 ]
 538                                         ],
 539                                         'trace' => $dbtrace,
 540                                         'servedby' => wfHostname(),
 541                                 ]
 542                         ],
 543                         [
 544                                 new UsageException( 'Usage exception!', 'ue', 0, [ 'foo' => 'bar' ] ),
 545                                 [ 'existing-error', 'ue' ],
 546                                 [
 547                                         'warnings' => [
 548                                                 [ 'code' => 'existing-warning', 'text' => 'existing warning', 'module' => 'main' ],
 549                                         ],
 550                                         'errors' => [
 551                                                 [ 'code' => 'existing-error', 'text' => 'existing error', 'module' => 'main' ],
 552                                                 [ 'code' => 'ue', 'text' => "Usage exception!", 'data' => [ 'foo' => 'bar' ] ]
 553                                         ],
 554                                         'docref' => "See $doclink for API usage.",
 555                                         'servedby' => wfHostname(),
 556                                 ]
 557                         ],
 558                         [
 559                                 $apiEx1,
 560                                 [ 'existing-error', 'sv-error1', 'sv-error2' ],
 561                                 [
 562                                         'warnings' => [
 563                                                 [ 'code' => 'existing-warning', 'text' => 'existing warning', 'module' => 'main' ],
 564                                                 [ 'code' => 'sv-warn1', 'text' => 'A warning', 'module' => 'foo+bar' ],
 565                                                 [ 'code' => 'sv-warn2', 'text' => 'Another warning', 'module' => 'foo+bar' ],
 566                                         ],
 567                                         'errors' => [
 568                                                 [ 'code' => 'existing-error', 'text' => 'existing error', 'module' => 'main' ],
 569                                                 [ 'code' => 'sv-error1', 'text' => 'An error', 'module' => 'foo+bar' ],
 570                                                 [ 'code' => 'sv-error2', 'text' => 'Another error', 'module' => 'foo+bar' ],
 571                                         ],
 572                                         'docref' => "See $doclink for API usage.",
 573                                         'servedby' => wfHostname(),
 574                                 ]
 575                         ],
 576                 ];
 577         }
 578 }