includes/specials/SpecialJavaScriptTest.php

   1 <?php
   2 /**
   3  * Implements Special:JavaScriptTest
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  */
  23
  24 /**
  25  * @ingroup SpecialPage
  26  */
  27 class SpecialJavaScriptTest extends SpecialPage {
  28         /**
  29          * @var array Supported frameworks.
  30          */
  31         private static $frameworks = array(
  32                 'qunit',
  33         );
  34
  35         public function __construct() {
  36                 parent::__construct( 'JavaScriptTest' );
  37         }
  38
  39         public function execute( $par ) {
  40                 $out = $this->getOutput();
  41
  42                 $this->setHeaders();
  43                 $out->disallowUserJs();
  44
  45                 if ( $par === null ) {
  46                         // No framework specified
  47                         $out->setStatusCode( 404 );
  48                         $out->setPageTitle( $this->msg( 'javascripttest' ) );
  49                         $out->addHTML(
  50                                 $this->msg( 'javascripttest-pagetext-noframework' )->parseAsBlock()
  51                                 . $this->getFrameworkListHtml()
  52                         );
  53                         return;
  54                 }
  55
  56                 // Determine framework and mode
  57                 $pars = explode( '/', $par, 2 );
  58
  59                 $framework = $pars[0];
  60                 if ( !in_array( $framework, self::$frameworks ) ) {
  61                         // Framework not found
  62                         $out->setStatusCode( 404 );
  63                         $out->addHTML(
  64                                 '<div class="error">'
  65                                 . $this->msg( 'javascripttest-pagetext-unknownframework' )
  66                                         ->plaintextParams( $par )->parseAsBlock()
  67                                 . '</div>'
  68                                 . $this->getFrameworkListHtml()
  69                         );
  70                         return;
  71                 }
  72
  73                 // This special page is disabled by default ($wgEnableJavaScriptTest), and contains
  74                 // no sensitive data. In order to allow TestSwarm to embed it into a test client window,
  75                 // we need to allow iframing of this page.
  76                 $out->allowClickjacking();
  77                 $out->setSubtitle(
  78                         $this->msg( 'javascripttest-backlink' )
  79                                 ->rawParams( Linker::linkKnown( $this->getPageTitle() ) )
  80                 );
  81
  82                 // Custom actions
  83                 if ( isset( $pars[1] ) ) {
  84                         $action = $pars[1];
  85                         if ( !in_array( $action, array( 'export', 'plain' ) ) ) {
  86                                 $out->setStatusCode( 404 );
  87                                 $out->addHTML(
  88                                         '<div class="error">'
  89                                         . $this->msg( 'javascripttest-pagetext-unknownaction' )
  90                                                 ->plaintextParams( $action )->parseAsBlock()
  91                                         . '</div>'
  92                                 );
  93                                 return;
  94                         }
  95                         $method = $action . ucfirst( $framework );
  96                         $this->$method();
  97                         return;
  98                 }
  99
 100                 $out->addModules( 'mediawiki.special.javaScriptTest' );
 101
 102                 $method = 'view' . ucfirst( $framework );
 103                 $this->$method();
 104                 $out->setPageTitle( $this->msg(
 105                         'javascripttest-title',
 106                         // Messages: javascripttest-qunit-name
 107                         $this->msg( "javascripttest-$framework-name" )->plain()
 108                 ) );
 109         }
 110
 111         /**
 112          * Get a list of frameworks (including introduction paragraph and links
 113          * to the framework run pages)
 114          *
 115          * @return string HTML
 116          */
 117         private function getFrameworkListHtml() {
 118                 $list = '<ul>';
 119                 foreach ( self::$frameworks as $framework ) {
 120                         $list .= Html::rawElement(
 121                                 'li',
 122                                 array(),
 123                                 Linker::link(
 124                                         $this->getPageTitle( $framework ),
 125                                         // Message: javascripttest-qunit-name
 126                                         $this->msg( "javascripttest-$framework-name" )->escaped()
 127                                 )
 128                         );
 129                 }
 130                 $list .= '</ul>';
 131
 132                 return $this->msg( 'javascripttest-pagetext-frameworks' )->rawParams( $list )
 133                         ->parseAsBlock();
 134         }
 135
 136         /**
 137          * Wrap HTML contents in a summary container.
 138          *
 139          * @param string $html HTML contents to be wrapped
 140          * @return string HTML
 141          */
 142         private function wrapSummaryHtml( $html ) {
 143                 return "<div id=\"mw-javascripttest-summary\">$html</div>";
 144         }
 145
 146         /**
 147          * Run the test suite on the Special page.
 148          *
 149          * Rendered by OutputPage and Skin.
 150          */
 151         private function viewQUnit() {
 152                 $out = $this->getOutput();
 153
 154                 $modules = $out->getResourceLoader()->getTestModuleNames( 'qunit' );
 155
 156                 $summary = $this->msg( 'javascripttest-qunit-intro' )
 157                         ->params( 'https://www.mediawiki.org/wiki/Manual:JavaScript_unit_testing' )
 158                         ->parseAsBlock();
 159
 160                 $baseHtml = <<<HTML
 161 <div class="mw-content-ltr">
 162 <div id="qunit"></div>
 163 </div>
 164 HTML;
 165
 166                 $out->addHtml( $this->wrapSummaryHtml( $summary ) . $baseHtml );
 167
 168                 // The testrunner configures QUnit and essentially depends on it. However, test suites
 169                 // are reusable in environments that preload QUnit (or a compatibility interface to
 170                 // another framework). Therefore we have to load it ourselves.
 171                 $out->addHtml( Html::inlineScript(
 172                         ResourceLoader::makeLoaderConditionalScript(
 173                                 Xml::encodeJsCall( 'mw.loader.using', array(
 174                                         array( 'jquery.qunit', 'jquery.qunit.completenessTest' ),
 175                                         new XmlJsCode(
 176                                                 'function () {' . Xml::encodeJsCall( 'mw.loader.load', array( $modules ) ) . '}'
 177                                         )
 178                                 ) )
 179                         )
 180                 ) );
 181         }
 182
 183         /**
 184          * Generate self-sufficient JavaScript payload to run the tests elsewhere.
 185          *
 186          * Includes startup module to request modules from ResourceLoader.
 187          *
 188          * Note: This modifies the registry to replace 'jquery.qunit' with an
 189          * empty module to allow external environment to preload QUnit with any
 190          * neccecary framework adapters (e.g. Karma). Loading it again would
 191          * re-define QUnit and dereference event handlers from Karma.
 192          */
 193         private function exportQUnit() {
 194                 $out = $this->getOutput();
 195
 196                 $out->disable();
 197
 198                 $rl = $out->getResourceLoader();
 199
 200                 $query = array(
 201                         'lang' => $this->getLanguage()->getCode(),
 202                         'skin' => $this->getSkin()->getSkinName(),
 203                         'debug' => ResourceLoader::inDebugMode() ? 'true' : 'false',
 204                 );
 205                 $embedContext = new ResourceLoaderContext( $rl, new FauxRequest( $query ) );
 206                 $query['only'] = 'scripts';
 207                 $startupContext = new ResourceLoaderContext( $rl, new FauxRequest( $query ) );
 208
 209                 $modules = $rl->getTestModuleNames( 'qunit' );
 210
 211                 // The below is essentially a pure-javascript version of OutputPage::getHeadScripts.
 212                 $startup = $rl->makeModuleResponse( $startupContext, array(
 213                         'startup' => $rl->getModule( 'startup' ),
 214                 ) );
 215                 // Embed page-specific mw.config variables.
 216                 // The current Special page shouldn't be relevant to tests, but various modules (which
 217                 // are loaded before the test suites), reference mw.config while initialising.
 218                 $code = ResourceLoader::makeConfigSetScript( $out->getJSVars() );
 219                 // Embed private modules as they're not allowed to be loaded dynamically
 220                 $code .= $rl->makeModuleResponse( $embedContext, array(
 221                         'user.options' => $rl->getModule( 'user.options' ),
 222                         'user.tokens' => $rl->getModule( 'user.tokens' ),
 223                 ) );
 224                 $code .= Xml::encodeJsCall( 'mw.loader.load', array( $modules ) );
 225
 226                 header( 'Content-Type: text/javascript; charset=utf-8' );
 227                 header( 'Cache-Control: private, no-cache, must-revalidate' );
 228                 header( 'Pragma: no-cache' );
 229                 echo $startup;
 230                 echo "\n";
 231                 // Note: The following has to be wrapped in a script tag because the startup module also
 232                 // writes a script tag (the one loading mediawiki.js). Script tags are synchronous, block
 233                 // each other, and run in order. But they don't nest. The code appended after the startup
 234                 // module runs before the added script tag is parsed and executed.
 235                 echo Xml::encodeJsCall( 'document.write', array( Html::inlineScript( $code  ) ) );
 236         }
 237
 238         private function plainQUnit() {
 239                 $out = $this->getOutput();
 240                 $out->disable();
 241
 242                 $url = $this->getPageTitle( 'qunit/export' )->getFullURL( array(
 243                         'debug' => ResourceLoader::inDebugMode() ? 'true' : 'false',
 244                 ) );
 245
 246                 $styles = $out->makeResourceLoaderLink( 'jquery.qunit', ResourceLoaderModule::TYPE_STYLES, false );
 247                 // Use 'raw' since this is a plain HTML page without ResourceLoader
 248                 $scripts = $out->makeResourceLoaderLink( 'jquery.qunit', ResourceLoaderModule::TYPE_SCRIPTS, false, array( 'raw' => 'true' ) );
 249
 250                 $head = trim( $styles['html'] . $scripts['html'] );
 251                 $html = <<<HTML
 252 <!DOCTYPE html>
 253 <title>QUnit</title>
 254 $head
 255 <div id="qunit"></div>
 256 HTML;
 257                 $html .= "\n" . Html::linkedScript( $url );
 258
 259                 header( 'Content-Type: text/html; charset=utf-8' );
 260                 echo $html;
 261         }
 262
 263         /**
 264          * Return an array of subpages that this special page will accept.
 265          *
 266          * @return string[] subpages
 267          */
 268         public function getSubpagesForPrefixSearch() {
 269                 return self::$frameworks;
 270         }
 271
 272         protected function getGroupName() {
 273                 return 'other';
 274         }
 275 }