tests/qunit/suites/resources/mediawiki/mediawiki.test.js

   1 /*jshint -W024 */
   2 ( function ( mw, $ ) {
   3         var specialCharactersPageName;
   4
   5         // Since QUnitTestResources.php loads both mediawiki and mediawiki.jqueryMsg as
   6         // dependencies, this only tests the monkey-patched behavior with the two of them combined.
   7
   8         // See mediawiki.jqueryMsg.test.js for unit tests for jqueryMsg-specific functionality.
   9
  10         QUnit.module( 'mediawiki', QUnit.newMwEnvironment( {
  11                 setup: function () {
  12                         specialCharactersPageName = '"Who" wants to be a millionaire & live on \'Exotic Island\'?';
  13                 },
  14                 config: {
  15                         wgArticlePath: '/wiki/$1',
  16
  17                         // For formatnum tests
  18                         wgUserLanguage: 'en'
  19                 },
  20                 // Messages used in multiple tests
  21                 messages: {
  22                         'other-message': 'Other Message',
  23                         'mediawiki-test-pagetriage-del-talk-page-notify-summary': 'Notifying author of deletion nomination for [[$1]]',
  24                         'gender-plural-msg': '{{GENDER:$1|he|she|they}} {{PLURAL:$2|is|are}} awesome',
  25                         'grammar-msg': 'Przeszukaj {{GRAMMAR:grammar_case_foo|{{SITENAME}}}}',
  26                         'formatnum-msg': '{{formatnum:$1}}',
  27                         'int-msg': 'Some {{int:other-message}}',
  28                         'mediawiki-test-version-entrypoints-index-php': '[https://www.mediawiki.org/wiki/Manual:index.php index.php]',
  29                         'external-link-replace': 'Foo [$1 bar]'
  30                 }
  31         } ) );
  32
  33         QUnit.test( 'Initial check', 8, function ( assert ) {
  34                 assert.ok( window.jQuery, 'jQuery defined' );
  35                 assert.ok( window.$, '$ defined' );
  36                 assert.strictEqual( window.$, window.jQuery, '$ alias to jQuery' );
  37
  38                 this.suppressWarnings();
  39                 assert.ok( window.$j, '$j defined' );
  40                 assert.strictEqual( window.$j, window.jQuery, '$j alias to jQuery' );
  41                 this.restoreWarnings();
  42
  43                 assert.ok( window.mediaWiki, 'mediaWiki defined' );
  44                 assert.ok( window.mw, 'mw defined' );
  45                 assert.strictEqual( window.mw, window.mediaWiki, 'mw alias to mediaWiki' );
  46         } );
  47
  48         QUnit.test( 'mw.Map', 28, function ( assert ) {
  49                 var arry, conf, funky, globalConf, nummy, someValues;
  50
  51                 conf = new mw.Map();
  52                 // Dummy variables
  53                 funky = function () {};
  54                 arry = [];
  55                 nummy = 7;
  56
  57                 // Single get and set
  58
  59                 assert.strictEqual( conf.set( 'foo', 'Bar' ), true, 'Map.set returns boolean true if a value was set for a valid key string' );
  60                 assert.equal( conf.get( 'foo' ), 'Bar', 'Map.get returns a single value value correctly' );
  61
  62                 assert.strictEqual( conf.get( 'example' ), null, 'Map.get returns null if selection was a string and the key was not found' );
  63                 assert.strictEqual( conf.get( 'example', arry ), arry, 'Map.get returns fallback by reference if the key was not found' );
  64                 assert.strictEqual( conf.get( 'example', undefined ), undefined, 'Map.get supports `undefined` as fallback instead of `null`' );
  65
  66                 assert.strictEqual( conf.get( 'constructor' ), null, 'Map.get does not look at Object.prototype of internal storage (constructor)' );
  67                 assert.strictEqual( conf.get( 'hasOwnProperty' ), null, 'Map.get does not look at Object.prototype of internal storage (hasOwnProperty)' );
  68
  69                 conf.set( 'hasOwnProperty', function () { return true; } );
  70                 assert.strictEqual( conf.get( 'example', 'missing' ), 'missing', 'Map.get uses neutral hasOwnProperty method (positive)' );
  71
  72                 conf.set( 'example', 'Foo' );
  73                 conf.set( 'hasOwnProperty', function () { return false; } );
  74                 assert.strictEqual( conf.get( 'example' ), 'Foo', 'Map.get uses neutral hasOwnProperty method (negative)' );
  75
  76                 assert.strictEqual( conf.set( 'constructor', 42 ), true, 'Map.set for key "constructor"' );
  77                 assert.strictEqual( conf.get( 'constructor' ), 42, 'Map.get for key "constructor"' );
  78
  79                 assert.strictEqual( conf.set( 'ImUndefined', undefined ), true, 'Map.set allows setting value to `undefined`' );
  80                 assert.equal( conf.get( 'ImUndefined', 'fallback' ), undefined, 'Map.get supports retreiving value of `undefined`' );
  81
  82                 assert.strictEqual( conf.set( funky, 'Funky' ), false, 'Map.set returns boolean false if key was invalid (Function)' );
  83                 assert.strictEqual( conf.set( arry, 'Arry' ), false, 'Map.set returns boolean false if key was invalid (Array)' );
  84                 assert.strictEqual( conf.set( nummy, 'Nummy' ), false, 'Map.set returns boolean false if key was invalid (Number)' );
  85
  86                 assert.strictEqual( conf.get( funky ), null, 'Map.get ruturns null if selection was invalid (Function)' );
  87                 assert.strictEqual( conf.get( nummy ), null, 'Map.get ruturns null if selection was invalid (Number)' );
  88
  89                 conf.set( String( nummy ), 'I used to be a number' );
  90
  91                 assert.strictEqual( conf.exists( 'doesNotExist' ), false, 'Map.exists where property does not exist' );
  92                 assert.strictEqual( conf.exists( 'ImUndefined' ), true, 'Map.exists where value is `undefined`' );
  93                 assert.strictEqual( conf.exists( nummy ), false, 'Map.exists where key is invalid but looks like an existing key' );
  94
  95                 // Multiple values at once
  96                 someValues = {
  97                         'foo': 'bar',
  98                         'lorem': 'ipsum',
  99                         'MediaWiki': true
 100                 };
 101                 assert.strictEqual( conf.set( someValues ), true, 'Map.set returns boolean true if multiple values were set by passing an object' );
 102                 assert.deepEqual( conf.get( ['foo', 'lorem'] ), {
 103                         'foo': 'bar',
 104                         'lorem': 'ipsum'
 105                 }, 'Map.get returns multiple values correctly as an object' );
 106
 107                 assert.deepEqual( conf, new mw.Map( conf.values ), 'new mw.Map maps over existing values-bearing object' );
 108
 109                 assert.deepEqual( conf.get( ['foo', 'notExist'] ), {
 110                         'foo': 'bar',
 111                         'notExist': null
 112                 }, 'Map.get return includes keys that were not found as null values' );
 113
 114                 // Interacting with globals and accessing the values object
 115                 assert.strictEqual( conf.get(), conf.values, 'Map.get returns the entire values object by reference (if called without arguments)' );
 116
 117                 conf.set( 'globalMapChecker', 'Hi' );
 118
 119                 assert.ok( 'globalMapChecker' in window === false, 'new mw.Map did not store its values in the global window object by default' );
 120
 121                 globalConf = new mw.Map( true );
 122                 globalConf.set( 'anotherGlobalMapChecker', 'Hello' );
 123
 124                 assert.ok( 'anotherGlobalMapChecker' in window, 'new mw.Map( true ) did store its values in the global window object' );
 125
 126                 // Whitelist this global variable for QUnit's 'noglobal' mode
 127                 if ( QUnit.config.noglobals ) {
 128                         QUnit.config.pollution.push( 'anotherGlobalMapChecker' );
 129                 }
 130         } );
 131
 132         QUnit.test( 'mw.config', 1, function ( assert ) {
 133                 assert.ok( mw.config instanceof mw.Map, 'mw.config instance of mw.Map' );
 134         } );
 135
 136         QUnit.test( 'mw.message & mw.messages', 100, function ( assert ) {
 137                 var goodbye, hello;
 138
 139                 // Convenience method for asserting the same result for multiple formats
 140                 function assertMultipleFormats( messageArguments, formats, expectedResult, assertMessage ) {
 141                         var len = formats.length, format, i;
 142                         for ( i = 0; i < len; i++ ) {
 143                                 format = formats[i];
 144                                 assert.equal( mw.message.apply( null, messageArguments )[format](), expectedResult, assertMessage + ' when format is ' + format );
 145                         }
 146                 }
 147
 148                 assert.ok( mw.messages, 'messages defined' );
 149                 assert.ok( mw.messages instanceof mw.Map, 'mw.messages instance of mw.Map' );
 150                 assert.ok( mw.messages.set( 'hello', 'Hello <b>awesome</b> world' ), 'mw.messages.set: Register' );
 151
 152                 hello = mw.message( 'hello' );
 153
 154                 // https://bugzilla.wikimedia.org/show_bug.cgi?id=44459
 155                 assert.equal( hello.format, 'text', 'Message property "format" defaults to "text"' );
 156
 157                 assert.strictEqual( hello.map, mw.messages, 'Message property "map" defaults to the global instance in mw.messages' );
 158                 assert.equal( hello.key, 'hello', 'Message property "key" (currect key)' );
 159                 assert.deepEqual( hello.parameters, [], 'Message property "parameters" defaults to an empty array' );
 160
 161                 // Todo
 162                 assert.ok( hello.params, 'Message prototype "params"' );
 163
 164                 hello.format = 'plain';
 165                 assert.equal( hello.toString(), 'Hello <b>awesome</b> world', 'Message.toString returns the message as a string with the current "format"' );
 166
 167                 assert.equal( hello.escaped(), 'Hello &lt;b&gt;awesome&lt;/b&gt; world', 'Message.escaped returns the escaped message' );
 168                 assert.equal( hello.format, 'escaped', 'Message.escaped correctly updated the "format" property' );
 169
 170                 assert.ok( mw.messages.set( 'multiple-curly-brace', '"{{SITENAME}}" is the home of {{int:other-message}}' ), 'mw.messages.set: Register' );
 171                 assertMultipleFormats( ['multiple-curly-brace'], ['text', 'parse'], '"' + mw.config.get( 'wgSiteName') + '" is the home of Other Message', 'Curly brace format works correctly' );
 172                 assert.equal( mw.message( 'multiple-curly-brace' ).plain(), mw.messages.get( 'multiple-curly-brace' ), 'Plain format works correctly for curly brace message' );
 173                 assert.equal( mw.message( 'multiple-curly-brace' ).escaped(), mw.html.escape( '"' + mw.config.get( 'wgSiteName') + '" is the home of Other Message' ), 'Escaped format works correctly for curly brace message' );
 174
 175                 assert.ok( mw.messages.set( 'multiple-square-brackets-and-ampersand', 'Visit the [[Project:Community portal|community portal]] & [[Project:Help desk|help desk]]' ), 'mw.messages.set: Register' );
 176                 assertMultipleFormats( ['multiple-square-brackets-and-ampersand'], ['plain', 'text'], mw.messages.get( 'multiple-square-brackets-and-ampersand' ), 'Square bracket message is not processed' );
 177                 assert.equal( mw.message( 'multiple-square-brackets-and-ampersand' ).escaped(), 'Visit the [[Project:Community portal|community portal]] &amp; [[Project:Help desk|help desk]]', 'Escaped format works correctly for square bracket message' );
 178                 assert.htmlEqual( mw.message( 'multiple-square-brackets-and-ampersand' ).parse(), 'Visit the ' +
 179                         '<a title="Project:Community portal" href="/wiki/Project:Community_portal">community portal</a>' +
 180                         ' &amp; <a title="Project:Help desk" href="/wiki/Project:Help_desk">help desk</a>', 'Internal links work with parse' );
 181
 182                 assertMultipleFormats( ['mediawiki-test-version-entrypoints-index-php'], ['plain', 'text', 'escaped'], mw.messages.get( 'mediawiki-test-version-entrypoints-index-php' ), 'External link markup is unprocessed' );
 183                 assert.htmlEqual( mw.message( 'mediawiki-test-version-entrypoints-index-php' ).parse(), '<a href="https://www.mediawiki.org/wiki/Manual:index.php">index.php</a>', 'External link works correctly in parse mode' );
 184
 185                 assertMultipleFormats( ['external-link-replace', 'http://example.org/?x=y&z'], ['plain', 'text'], 'Foo [http://example.org/?x=y&z bar]', 'Parameters are substituted but external link is not processed' );
 186                 assert.equal( mw.message( 'external-link-replace', 'http://example.org/?x=y&z' ).escaped(), 'Foo [http://example.org/?x=y&amp;z bar]', 'In escaped mode, parameters are substituted and ampersand is escaped, but external link is not processed' );
 187                 assert.htmlEqual( mw.message( 'external-link-replace', 'http://example.org/?x=y&z' ).parse(), 'Foo <a href="http://example.org/?x=y&amp;z">bar</a>', 'External link with replacement works in parse mode without double-escaping' );
 188
 189                 hello.parse();
 190                 assert.equal( hello.format, 'parse', 'Message.parse correctly updated the "format" property' );
 191
 192                 hello.plain();
 193                 assert.equal( hello.format, 'plain', 'Message.plain correctly updated the "format" property' );
 194
 195                 hello.text();
 196                 assert.equal( hello.format, 'text', 'Message.text correctly updated the "format" property' );
 197
 198                 assert.strictEqual( hello.exists(), true, 'Message.exists returns true for existing messages' );
 199
 200                 goodbye = mw.message( 'goodbye' );
 201                 assert.strictEqual( goodbye.exists(), false, 'Message.exists returns false for nonexistent messages' );
 202
 203                 assertMultipleFormats( ['goodbye'], ['plain', 'text'], '<goodbye>', 'Message.toString returns <key> if key does not exist' );
 204                 // bug 30684
 205                 assertMultipleFormats( ['goodbye'], ['parse', 'escaped'], '&lt;goodbye&gt;', 'Message.toString returns properly escaped &lt;key&gt; if key does not exist' );
 206
 207                 assert.ok( mw.messages.set( 'plural-test-msg', 'There {{PLURAL:$1|is|are}} $1 {{PLURAL:$1|result|results}}' ), 'mw.messages.set: Register' );
 208                 assertMultipleFormats( ['plural-test-msg', 6], ['text', 'parse', 'escaped'], 'There are 6 results', 'plural get resolved' );
 209                 assert.equal( mw.message( 'plural-test-msg', 6 ).plain(), 'There {{PLURAL:6|is|are}} 6 {{PLURAL:6|result|results}}', 'Parameter is substituted but plural is not resolved in plain' );
 210
 211                 assert.ok( mw.messages.set( 'plural-test-msg-explicit', 'There {{plural:$1|is one car|are $1 cars|0=are no cars|12=are a dozen cars}}' ), 'mw.messages.set: Register message with explicit plural forms' );
 212                 assertMultipleFormats( ['plural-test-msg-explicit', 12], ['text', 'parse', 'escaped'], 'There are a dozen cars', 'explicit plural get resolved' );
 213
 214                 assert.ok( mw.messages.set( 'plural-test-msg-explicit-beginning', 'Basket has {{plural:$1|0=no eggs|12=a dozen eggs|6=half a dozen eggs|one egg|$1 eggs}}' ), 'mw.messages.set: Register message with explicit plural forms' );
 215                 assertMultipleFormats( ['plural-test-msg-explicit-beginning', 1], ['text', 'parse', 'escaped'], 'Basket has one egg', 'explicit plural given at beginning get resolved for singular' );
 216                 assertMultipleFormats( ['plural-test-msg-explicit-beginning', 4], ['text', 'parse', 'escaped'], 'Basket has 4 eggs', 'explicit plural given at beginning get resolved for plural' );
 217                 assertMultipleFormats( ['plural-test-msg-explicit-beginning', 6], ['text', 'parse', 'escaped'], 'Basket has half a dozen eggs', 'explicit plural given at beginning get resolved for 6' );
 218                 assertMultipleFormats( ['plural-test-msg-explicit-beginning', 0], ['text', 'parse', 'escaped'], 'Basket has no eggs', 'explicit plural given at beginning get resolved for 0' );
 219
 220                 assertMultipleFormats( ['mediawiki-test-pagetriage-del-talk-page-notify-summary'], ['plain', 'text'], mw.messages.get( 'mediawiki-test-pagetriage-del-talk-page-notify-summary' ), 'Double square brackets with no parameters unchanged' );
 221
 222                 assertMultipleFormats( ['mediawiki-test-pagetriage-del-talk-page-notify-summary', specialCharactersPageName], ['plain', 'text'], 'Notifying author of deletion nomination for [[' + specialCharactersPageName + ']]', 'Double square brackets with one parameter' );
 223
 224                 assert.equal( mw.message( 'mediawiki-test-pagetriage-del-talk-page-notify-summary', specialCharactersPageName ).escaped(), 'Notifying author of deletion nomination for [[' + mw.html.escape( specialCharactersPageName ) + ']]', 'Double square brackets with one parameter, when escaped' );
 225
 226                 assert.ok( mw.messages.set( 'mediawiki-test-categorytree-collapse-bullet', '[<b>−</b>]' ), 'mw.messages.set: Register' );
 227                 assert.equal( mw.message( 'mediawiki-test-categorytree-collapse-bullet' ).plain(), mw.messages.get( 'mediawiki-test-categorytree-collapse-bullet' ), 'Single square brackets unchanged in plain mode' );
 228
 229                 assert.ok( mw.messages.set( 'mediawiki-test-wikieditor-toolbar-help-content-signature-result', '<a href=\'#\' title=\'{{#special:mypage}}\'>Username</a> (<a href=\'#\' title=\'{{#special:mytalk}}\'>talk</a>)' ), 'mw.messages.set: Register' );
 230                 assert.equal( mw.message( 'mediawiki-test-wikieditor-toolbar-help-content-signature-result' ).plain(), mw.messages.get( 'mediawiki-test-wikieditor-toolbar-help-content-signature-result' ), 'HTML message with curly braces is not changed in plain mode' );
 231
 232                 assertMultipleFormats( ['gender-plural-msg', 'male', 1], ['text', 'parse', 'escaped'], 'he is awesome', 'Gender and plural are resolved' );
 233                 assert.equal( mw.message( 'gender-plural-msg', 'male', 1 ).plain(), '{{GENDER:male|he|she|they}} {{PLURAL:1|is|are}} awesome', 'Parameters are substituted, but gender and plural are not resolved in plain mode' );
 234
 235                 assert.equal( mw.message( 'grammar-msg' ).plain(), mw.messages.get( 'grammar-msg' ), 'Grammar is not resolved in plain mode' );
 236                 assertMultipleFormats( ['grammar-msg'], ['text', 'parse'], 'Przeszukaj ' + mw.config.get( 'wgSiteName' ), 'Grammar is resolved' );
 237                 assert.equal( mw.message( 'grammar-msg' ).escaped(), 'Przeszukaj ' + mw.html.escape( mw.config.get( 'wgSiteName' ) ), 'Grammar is resolved in escaped mode' );
 238
 239                 assertMultipleFormats( ['formatnum-msg', '987654321.654321'], ['text', 'parse', 'escaped'], '987,654,321.654', 'formatnum is resolved' );
 240                 assert.equal( mw.message( 'formatnum-msg' ).plain(), mw.messages.get( 'formatnum-msg' ), 'formatnum is not resolved in plain mode' );
 241
 242                 assertMultipleFormats( ['int-msg'], ['text', 'parse', 'escaped'], 'Some Other Message', 'int is resolved' );
 243                 assert.equal( mw.message( 'int-msg' ).plain(), mw.messages.get( 'int-msg' ), 'int is not resolved in plain mode' );
 244
 245                 assert.ok( mw.messages.set( 'mediawiki-italics-msg', '<i>Very</i> important' ), 'mw.messages.set: Register' );
 246                 assertMultipleFormats( ['mediawiki-italics-msg'], ['plain', 'text', 'parse'], mw.messages.get( 'mediawiki-italics-msg' ), 'Simple italics unchanged' );
 247                 assert.htmlEqual(
 248                         mw.message( 'mediawiki-italics-msg' ).escaped(),
 249                         '&lt;i&gt;Very&lt;/i&gt; important',
 250                         'Italics are escaped in escaped mode'
 251                 );
 252
 253                 assert.ok( mw.messages.set( 'mediawiki-italics-with-link', 'An <i>italicized [[link|wiki-link]]</i>' ), 'mw.messages.set: Register' );
 254                 assertMultipleFormats( ['mediawiki-italics-with-link'], ['plain', 'text'], mw.messages.get( 'mediawiki-italics-with-link' ), 'Italics with link unchanged' );
 255                 assert.htmlEqual(
 256                         mw.message( 'mediawiki-italics-with-link' ).escaped(),
 257                         'An &lt;i&gt;italicized [[link|wiki-link]]&lt;/i&gt;',
 258                         'Italics and link unchanged except for escaping in escaped mode'
 259                 );
 260                 assert.htmlEqual(
 261                         mw.message( 'mediawiki-italics-with-link' ).parse(),
 262                         'An <i>italicized <a title="link" href="' + mw.util.getUrl( 'link' ) + '">wiki-link</i>',
 263                         'Italics with link inside in parse mode'
 264                 );
 265
 266                 assert.ok( mw.messages.set( 'mediawiki-script-msg', '<script  >alert( "Who put this script here?" );</script>' ), 'mw.messages.set: Register' );
 267                 assertMultipleFormats( ['mediawiki-script-msg'], ['plain', 'text'], mw.messages.get( 'mediawiki-script-msg' ), 'Script unchanged' );
 268                 assert.htmlEqual(
 269                         mw.message( 'mediawiki-script-msg' ).escaped(),
 270                         '&lt;script  &gt;alert( "Who put this script here?" );&lt;/script&gt;',
 271                         'Script escaped when using escaped format'
 272                 );
 273                 assert.htmlEqual(
 274                         mw.message( 'mediawiki-script-msg' ).parse(),
 275                         '&lt;script  &gt;alert( "Who put this script here?" );&lt;/script&gt;',
 276                         'Script escaped when using parse format'
 277                 );
 278
 279         } );
 280
 281         QUnit.test( 'mw.msg', 14, function ( assert ) {
 282                 assert.ok( mw.messages.set( 'hello', 'Hello <b>awesome</b> world' ), 'mw.messages.set: Register' );
 283                 assert.equal( mw.msg( 'hello' ), 'Hello <b>awesome</b> world', 'Gets message with default options (existing message)' );
 284                 assert.equal( mw.msg( 'goodbye' ), '<goodbye>', 'Gets message with default options (nonexistent message)' );
 285
 286                 assert.ok( mw.messages.set( 'plural-item', 'Found $1 {{PLURAL:$1|item|items}}' ), 'mw.messages.set: Register' );
 287                 assert.equal( mw.msg( 'plural-item', 5 ), 'Found 5 items', 'Apply plural for count 5' );
 288                 assert.equal( mw.msg( 'plural-item', 0 ), 'Found 0 items', 'Apply plural for count 0' );
 289                 assert.equal( mw.msg( 'plural-item', 1 ), 'Found 1 item', 'Apply plural for count 1' );
 290
 291                 assert.equal( mw.msg( 'mediawiki-test-pagetriage-del-talk-page-notify-summary', specialCharactersPageName ), 'Notifying author of deletion nomination for [[' + specialCharactersPageName + ']]', 'Double square brackets in mw.msg one parameter' );
 292
 293                 assert.equal( mw.msg( 'gender-plural-msg', 'male', 1 ), 'he is awesome', 'Gender test for male, plural count 1' );
 294                 assert.equal( mw.msg( 'gender-plural-msg', 'female', '1' ), 'she is awesome', 'Gender test for female, plural count 1' );
 295                 assert.equal( mw.msg( 'gender-plural-msg', 'unknown', 10 ), 'they are awesome', 'Gender test for neutral, plural count 10' );
 296
 297                 assert.equal( mw.msg( 'grammar-msg' ), 'Przeszukaj ' + mw.config.get( 'wgSiteName' ), 'Grammar is resolved' );
 298
 299                 assert.equal( mw.msg( 'formatnum-msg', '987654321.654321' ), '987,654,321.654', 'formatnum is resolved' );
 300
 301                 assert.equal( mw.msg( 'int-msg' ), 'Some Other Message', 'int is resolved' );
 302         } );
 303
 304         /**
 305          * The sync style load test (for @import). This is, in a way, also an open bug for
 306          * ResourceLoader ("execute js after styles are loaded"), but browsers don't offer a
 307          * way to get a callback from when a stylesheet is loaded (that is, including any
 308          * @import rules inside). To work around this, we'll have a little time loop to check
 309          * if the styles apply.
 310          * Note: This test originally used new Image() and onerror to get a callback
 311          * when the url is loaded, but that is fragile since it doesn't monitor the
 312          * same request as the css @import, and Safari 4 has issues with
 313          * onerror/onload not being fired at all in weird cases like this.
 314          */
 315         function assertStyleAsync( assert, $element, prop, val, fn ) {
 316                 var styleTestStart,
 317                         el = $element.get( 0 ),
 318                         styleTestTimeout = ( QUnit.config.testTimeout || 5000 ) - 200;
 319
 320                 function isCssImportApplied() {
 321                         // Trigger reflow, repaint, redraw, whatever (cross-browser)
 322                         var x = $element.css( 'height' );
 323                         x = el.innerHTML;
 324                         el.className = el.className;
 325                         x = document.documentElement.clientHeight;
 326
 327                         return $element.css( prop ) === val;
 328                 }
 329
 330                 function styleTestLoop() {
 331                         var styleTestSince = new Date().getTime() - styleTestStart;
 332                         // If it is passing or if we timed out, run the real test and stop the loop
 333                         if ( isCssImportApplied() || styleTestSince > styleTestTimeout ) {
 334                                 assert.equal( $element.css( prop ), val,
 335                                         'style "' + prop + ': ' + val + '" from url is applied (after ' + styleTestSince + 'ms)'
 336                                 );
 337
 338                                 if ( fn ) {
 339                                         fn();
 340                                 }
 341
 342                                 return;
 343                         }
 344                         // Otherwise, keep polling
 345                         setTimeout( styleTestLoop, 150 );
 346                 }
 347
 348                 // Start the loop
 349                 styleTestStart = new Date().getTime();
 350                 styleTestLoop();
 351         }
 352
 353         function urlStyleTest( selector, prop, val ) {
 354                 return QUnit.fixurl(
 355                         mw.config.get( 'wgScriptPath' ) +
 356                                 '/tests/qunit/data/styleTest.css.php?' +
 357                                 $.param( {
 358                                         selector: selector,
 359                                         prop: prop,
 360                                         val: val
 361                                 } )
 362                 );
 363         }
 364
 365         QUnit.asyncTest( 'mw.loader', 2, function ( assert ) {
 366                 var isAwesomeDone;
 367
 368                 mw.loader.testCallback = function () {
 369                         QUnit.start();
 370                         assert.strictEqual( isAwesomeDone, undefined, 'Implementing module is.awesome: isAwesomeDone should still be undefined' );
 371                         isAwesomeDone = true;
 372                 };
 373
 374                 mw.loader.implement( 'test.callback', [QUnit.fixurl( mw.config.get( 'wgScriptPath' ) + '/tests/qunit/data/callMwLoaderTestCallback.js' )], {}, {} );
 375
 376                 mw.loader.using( 'test.callback', function () {
 377
 378                         // /sample/awesome.js declares the "mw.loader.testCallback" function
 379                         // which contains a call to start() and ok()
 380                         assert.strictEqual( isAwesomeDone, true, 'test.callback module should\'ve caused isAwesomeDone to be true' );
 381                         delete mw.loader.testCallback;
 382
 383                 }, function () {
 384                         QUnit.start();
 385                         assert.ok( false, 'Error callback fired while loader.using "test.callback" module' );
 386                 } );
 387         } );
 388
 389         QUnit.asyncTest( 'mw.loader.using( .. ).promise', 2, function ( assert ) {
 390                 var isAwesomeDone;
 391
 392                 mw.loader.testCallback = function () {
 393                         QUnit.start();
 394                         assert.strictEqual( isAwesomeDone, undefined, 'Implementing module is.awesome: isAwesomeDone should still be undefined' );
 395                         isAwesomeDone = true;
 396                 };
 397
 398                 mw.loader.implement( 'test.promise', [QUnit.fixurl( mw.config.get( 'wgScriptPath' ) + '/tests/qunit/data/callMwLoaderTestCallback.js' )], {}, {} );
 399
 400                 mw.loader.using( 'test.promise' )
 401                 .done( function () {
 402
 403                         // /sample/awesome.js declares the "mw.loader.testCallback" function
 404                         // which contains a call to start() and ok()
 405                         assert.strictEqual( isAwesomeDone, true, 'test.promise module should\'ve caused isAwesomeDone to be true' );
 406                         delete mw.loader.testCallback;
 407
 408                 } )
 409                 .fail( function () {
 410                         QUnit.start();
 411                         assert.ok( false, 'Error callback fired while loader.using "test.promise" module' );
 412                 } );
 413         } );
 414
 415         QUnit.asyncTest( 'mw.loader.implement( styles={ "css": [text, ..] } )', 2, function ( assert ) {
 416                 var $element = $( '<div class="mw-test-implement-a"></div>' ).appendTo( '#qunit-fixture' );
 417
 418                 assert.notEqual(
 419                         $element.css( 'float' ),
 420                         'right',
 421                         'style is clear'
 422                 );
 423
 424                 mw.loader.implement(
 425                         'test.implement.a',
 426                         function () {
 427                                 assert.equal(
 428                                         $element.css( 'float' ),
 429                                         'right',
 430                                         'style is applied'
 431                                 );
 432                                 QUnit.start();
 433                         },
 434                         {
 435                                 'all': '.mw-test-implement-a { float: right; }'
 436                         },
 437                         {}
 438                 );
 439
 440                 mw.loader.load( [
 441                         'test.implement.a'
 442                 ] );
 443         } );
 444
 445         QUnit.asyncTest( 'mw.loader.implement( styles={ "url": { <media>: [url, ..] } } )', 7, function ( assert ) {
 446                 var $element1 = $( '<div class="mw-test-implement-b1"></div>' ).appendTo( '#qunit-fixture' ),
 447                         $element2 = $( '<div class="mw-test-implement-b2"></div>' ).appendTo( '#qunit-fixture' ),
 448                         $element3 = $( '<div class="mw-test-implement-b3"></div>' ).appendTo( '#qunit-fixture' );
 449
 450                 assert.notEqual(
 451                         $element1.css( 'text-align' ),
 452                         'center',
 453                         'style is clear'
 454                 );
 455                 assert.notEqual(
 456                         $element2.css( 'float' ),
 457                         'left',
 458                         'style is clear'
 459                 );
 460                 assert.notEqual(
 461                         $element3.css( 'text-align' ),
 462                         'right',
 463                         'style is clear'
 464                 );
 465
 466                 mw.loader.implement(
 467                         'test.implement.b',
 468                         function () {
 469                                 // Note: QUnit.start() must only be called when the entire test is
 470                                 // complete. So, make sure that we don't start until *both*
 471                                 // assertStyleAsync calls have completed.
 472                                 var pending = 2;
 473                                 assertStyleAsync( assert, $element2, 'float', 'left', function () {
 474                                         assert.notEqual( $element1.css( 'text-align' ), 'center', 'print style is not applied' );
 475
 476                                         pending--;
 477                                         if ( pending === 0 ) {
 478                                                 QUnit.start();
 479                                         }
 480                                 } );
 481                                 assertStyleAsync( assert, $element3, 'float', 'right', function () {
 482                                         assert.notEqual( $element1.css( 'text-align' ), 'center', 'print style is not applied' );
 483
 484                                         pending--;
 485                                         if ( pending === 0 ) {
 486                                                 QUnit.start();
 487                                         }
 488                                 } );
 489                         },
 490                         {
 491                                 'url': {
 492                                         'print': [urlStyleTest( '.mw-test-implement-b1', 'text-align', 'center' )],
 493                                         'screen': [
 494                                                 // bug 40834: Make sure it actually works with more than 1 stylesheet reference
 495                                                 urlStyleTest( '.mw-test-implement-b2', 'float', 'left' ),
 496                                                 urlStyleTest( '.mw-test-implement-b3', 'float', 'right' )
 497                                         ]
 498                                 }
 499                         },
 500                         {}
 501                 );
 502
 503                 mw.loader.load( [
 504                         'test.implement.b'
 505                 ] );
 506         } );
 507
 508         // Backwards compatibility
 509         QUnit.asyncTest( 'mw.loader.implement( styles={ <media>: text } ) (back-compat)', 2, function ( assert ) {
 510                 var $element = $( '<div class="mw-test-implement-c"></div>' ).appendTo( '#qunit-fixture' );
 511
 512                 assert.notEqual(
 513                         $element.css( 'float' ),
 514                         'right',
 515                         'style is clear'
 516                 );
 517
 518                 mw.loader.implement(
 519                         'test.implement.c',
 520                         function () {
 521                                 assert.equal(
 522                                         $element.css( 'float' ),
 523                                         'right',
 524                                         'style is applied'
 525                                 );
 526                                 QUnit.start();
 527                         },
 528                         {
 529                                 'all': '.mw-test-implement-c { float: right; }'
 530                         },
 531                         {}
 532                 );
 533
 534                 mw.loader.load( [
 535                         'test.implement.c'
 536                 ] );
 537         } );
 538
 539         // Backwards compatibility
 540         QUnit.asyncTest( 'mw.loader.implement( styles={ <media>: [url, ..] } ) (back-compat)', 4, function ( assert ) {
 541                 var $element = $( '<div class="mw-test-implement-d"></div>' ).appendTo( '#qunit-fixture' ),
 542                         $element2 = $( '<div class="mw-test-implement-d2"></div>' ).appendTo( '#qunit-fixture' );
 543
 544                 assert.notEqual(
 545                         $element.css( 'float' ),
 546                         'right',
 547                         'style is clear'
 548                 );
 549                 assert.notEqual(
 550                         $element2.css( 'text-align' ),
 551                         'center',
 552                         'style is clear'
 553                 );
 554
 555                 mw.loader.implement(
 556                         'test.implement.d',
 557                         function () {
 558                                 assertStyleAsync( assert, $element, 'float', 'right', function () {
 559
 560                                         assert.notEqual( $element2.css( 'text-align' ), 'center', 'print style is not applied (bug 40500)' );
 561
 562                                         QUnit.start();
 563                                 } );
 564                         },
 565                         {
 566                                 'all': [urlStyleTest( '.mw-test-implement-d', 'float', 'right' )],
 567                                 'print': [urlStyleTest( '.mw-test-implement-d2', 'text-align', 'center' )]
 568                         },
 569                         {}
 570                 );
 571
 572                 mw.loader.load( [
 573                         'test.implement.d'
 574                 ] );
 575         } );
 576
 577         // @import (bug 31676)
 578         QUnit.asyncTest( 'mw.loader.implement( styles has @import)', 5, function ( assert ) {
 579                 var isJsExecuted, $element;
 580
 581                 mw.loader.implement(
 582                         'test.implement.import',
 583                         function () {
 584                                 assert.strictEqual( isJsExecuted, undefined, 'javascript not executed multiple times' );
 585                                 isJsExecuted = true;
 586
 587                                 assert.equal( mw.loader.getState( 'test.implement.import' ), 'ready', 'module state is "ready" while implement() is executing javascript' );
 588
 589                                 $element = $( '<div class="mw-test-implement-import">Foo bar</div>' ).appendTo( '#qunit-fixture' );
 590
 591                                 assert.equal( mw.msg( 'test-foobar' ), 'Hello Foobar, $1!', 'Messages are loaded before javascript execution' );
 592
 593                                 assertStyleAsync( assert, $element, 'float', 'right', function () {
 594                                         assert.equal( $element.css( 'text-align' ), 'center',
 595                                                 'CSS styles after the @import rule are working'
 596                                         );
 597
 598                                         QUnit.start();
 599                                 } );
 600                         },
 601                         {
 602                                 'css': [
 603                                         '@import url(\''
 604                                                 + urlStyleTest( '.mw-test-implement-import', 'float', 'right' )
 605                                                 + '\');\n'
 606                                                 + '.mw-test-implement-import { text-align: center; }'
 607                                 ]
 608                         },
 609                         {
 610                                 'test-foobar': 'Hello Foobar, $1!'
 611                         }
 612                 );
 613
 614                 mw.loader.load( 'test.implement' );
 615
 616         } );
 617
 618         QUnit.asyncTest( 'mw.loader.implement( only messages )', 2, function ( assert ) {
 619                 assert.assertFalse( mw.messages.exists( 'bug_29107' ), 'Verify that the test message doesn\'t exist yet' );
 620
 621                 mw.loader.implement( 'test.implement.msgs', [], {}, { 'bug_29107': 'loaded' } );
 622                 mw.loader.using( 'test.implement.msgs', function () {
 623                         QUnit.start();
 624                         assert.ok( mw.messages.exists( 'bug_29107' ), 'Bug 29107: messages-only module should implement ok' );
 625                 }, function () {
 626                         QUnit.start();
 627                         assert.ok( false, 'Error callback fired while implementing "test.implement.msgs" module' );
 628                 } );
 629         } );
 630
 631         QUnit.test( 'mw.loader erroneous indirect dependency', 3, function ( assert ) {
 632                 mw.loader.register( [
 633                         ['test.module1', '0'],
 634                         ['test.module2', '0', ['test.module1']],
 635                         ['test.module3', '0', ['test.module2']]
 636                 ] );
 637                 mw.loader.implement( 'test.module1', function () {
 638                         throw new Error( 'expected' );
 639                 }, {}, {} );
 640                 assert.strictEqual( mw.loader.getState( 'test.module1' ), 'error', 'Expected "error" state for test.module1' );
 641                 assert.strictEqual( mw.loader.getState( 'test.module2' ), 'error', 'Expected "error" state for test.module2' );
 642                 assert.strictEqual( mw.loader.getState( 'test.module3' ), 'error', 'Expected "error" state for test.module3' );
 643         } );
 644
 645         QUnit.test( 'mw.loader out-of-order implementation', 9, function ( assert ) {
 646                 mw.loader.register( [
 647                         ['test.module4', '0'],
 648                         ['test.module5', '0', ['test.module4']],
 649                         ['test.module6', '0', ['test.module5']]
 650                 ] );
 651                 mw.loader.implement( 'test.module4', function () {
 652                 }, {}, {} );
 653                 assert.strictEqual( mw.loader.getState( 'test.module4' ), 'ready', 'Expected "ready" state for test.module4' );
 654                 assert.strictEqual( mw.loader.getState( 'test.module5' ), 'registered', 'Expected "registered" state for test.module5' );
 655                 assert.strictEqual( mw.loader.getState( 'test.module6' ), 'registered', 'Expected "registered" state for test.module6' );
 656                 mw.loader.implement( 'test.module6', function () {
 657                 }, {}, {} );
 658                 assert.strictEqual( mw.loader.getState( 'test.module4' ), 'ready', 'Expected "ready" state for test.module4' );
 659                 assert.strictEqual( mw.loader.getState( 'test.module5' ), 'registered', 'Expected "registered" state for test.module5' );
 660                 assert.strictEqual( mw.loader.getState( 'test.module6' ), 'loaded', 'Expected "loaded" state for test.module6' );
 661                 mw.loader.implement( 'test.module5', function () {
 662                 }, {}, {} );
 663                 assert.strictEqual( mw.loader.getState( 'test.module4' ), 'ready', 'Expected "ready" state for test.module4' );
 664                 assert.strictEqual( mw.loader.getState( 'test.module5' ), 'ready', 'Expected "ready" state for test.module5' );
 665                 assert.strictEqual( mw.loader.getState( 'test.module6' ), 'ready', 'Expected "ready" state for test.module6' );
 666         } );
 667
 668         QUnit.test( 'mw.loader missing dependency', 13, function ( assert ) {
 669                 mw.loader.register( [
 670                         ['test.module7', '0'],
 671                         ['test.module8', '0', ['test.module7']],
 672                         ['test.module9', '0', ['test.module8']]
 673                 ] );
 674                 mw.loader.implement( 'test.module8', function () {
 675                 }, {}, {} );
 676                 assert.strictEqual( mw.loader.getState( 'test.module7' ), 'registered', 'Expected "registered" state for test.module7' );
 677                 assert.strictEqual( mw.loader.getState( 'test.module8' ), 'loaded', 'Expected "loaded" state for test.module8' );
 678                 assert.strictEqual( mw.loader.getState( 'test.module9' ), 'registered', 'Expected "registered" state for test.module9' );
 679                 mw.loader.state( 'test.module7', 'missing' );
 680                 assert.strictEqual( mw.loader.getState( 'test.module7' ), 'missing', 'Expected "missing" state for test.module7' );
 681                 assert.strictEqual( mw.loader.getState( 'test.module8' ), 'error', 'Expected "error" state for test.module8' );
 682                 assert.strictEqual( mw.loader.getState( 'test.module9' ), 'error', 'Expected "error" state for test.module9' );
 683                 mw.loader.implement( 'test.module9', function () {
 684                 }, {}, {} );
 685                 assert.strictEqual( mw.loader.getState( 'test.module7' ), 'missing', 'Expected "missing" state for test.module7' );
 686                 assert.strictEqual( mw.loader.getState( 'test.module8' ), 'error', 'Expected "error" state for test.module8' );
 687                 assert.strictEqual( mw.loader.getState( 'test.module9' ), 'error', 'Expected "error" state for test.module9' );
 688                 mw.loader.using(
 689                         ['test.module7'],
 690                         function () {
 691                                 assert.ok( false, 'Success fired despite missing dependency' );
 692                                 assert.ok( true, 'QUnit expected() count dummy' );
 693                         },
 694                         function ( e, dependencies ) {
 695                                 assert.strictEqual( $.isArray( dependencies ), true, 'Expected array of dependencies' );
 696                                 assert.deepEqual( dependencies, ['test.module7'], 'Error callback called with module test.module7' );
 697                         }
 698                 );
 699                 mw.loader.using(
 700                         ['test.module9'],
 701                         function () {
 702                                 assert.ok( false, 'Success fired despite missing dependency' );
 703                                 assert.ok( true, 'QUnit expected() count dummy' );
 704                         },
 705                         function ( e, dependencies ) {
 706                                 assert.strictEqual( $.isArray( dependencies ), true, 'Expected array of dependencies' );
 707                                 dependencies.sort();
 708                                 assert.deepEqual(
 709                                         dependencies,
 710                                         ['test.module7', 'test.module8', 'test.module9'],
 711                                         'Error callback called with all three modules as dependencies'
 712                                 );
 713                         }
 714                 );
 715         } );
 716
 717         QUnit.asyncTest( 'mw.loader dependency handling', 5, function ( assert ) {
 718                 mw.loader.addSource(
 719                         'testloader',
 720                         {
 721                                 loadScript: QUnit.fixurl( mw.config.get( 'wgScriptPath' ) + '/tests/qunit/data/load.mock.php' )
 722                         }
 723                 );
 724
 725                 mw.loader.register( [
 726                         // [module, version, dependencies, group, source]
 727                         ['testMissing', '1', [], null, 'testloader'],
 728                         ['testUsesMissing', '1', ['testMissing'], null, 'testloader'],
 729                         ['testUsesNestedMissing', '1', ['testUsesMissing'], null, 'testloader']
 730                 ] );
 731
 732                 function verifyModuleStates() {
 733                         assert.equal( mw.loader.getState( 'testMissing' ), 'missing', 'Module not known to server must have state "missing"' );
 734                         assert.equal( mw.loader.getState( 'testUsesMissing' ), 'error', 'Module with missing dependency must have state "error"' );
 735                         assert.equal( mw.loader.getState( 'testUsesNestedMissing' ), 'error', 'Module with indirect missing dependency must have state "error"' );
 736                 }
 737
 738                 mw.loader.using( ['testUsesNestedMissing'],
 739                         function () {
 740                                 assert.ok( false, 'Error handler should be invoked.' );
 741                                 assert.ok( true ); // Dummy to reach QUnit expect()
 742
 743                                 verifyModuleStates();
 744
 745                                 QUnit.start();
 746                         },
 747                         function ( e, badmodules ) {
 748                                 assert.ok( true, 'Error handler should be invoked.' );
 749                                 // As soon as server spits out state('testMissing', 'missing');
 750                                 // it will bubble up and trigger the error callback.
 751                                 // Therefor the badmodules array is not testUsesMissing or testUsesNestedMissing.
 752                                 assert.deepEqual( badmodules, ['testMissing'], 'Bad modules as expected.' );
 753
 754                                 verifyModuleStates();
 755
 756                                 QUnit.start();
 757                         }
 758                 );
 759         } );
 760
 761         QUnit.asyncTest( 'mw.loader( "//protocol-relative" ) (bug 30825)', 2, function ( assert ) {
 762                 // This bug was actually already fixed in 1.18 and later when discovered in 1.17.
 763                 // Test is for regressions!
 764
 765                 // Forge an URL to the test callback script
 766                 var target = QUnit.fixurl(
 767                         mw.config.get( 'wgServer' ) + mw.config.get( 'wgScriptPath' ) + '/tests/qunit/data/qunitOkCall.js'
 768                 );
 769
 770                 // Confirm that mw.loader.load() works with protocol-relative URLs
 771                 target = target.replace( /https?:/, '' );
 772
 773                 assert.equal( target.substr( 0, 2 ), '//',
 774                         'URL must be relative to test relative URLs!'
 775                 );
 776
 777                 // Async!
 778                 // The target calls QUnit.start
 779                 mw.loader.load( target );
 780         } );
 781
 782         QUnit.test( 'mw.html', 13, function ( assert ) {
 783                 assert.throws( function () {
 784                         mw.html.escape();
 785                 }, TypeError, 'html.escape throws a TypeError if argument given is not a string' );
 786
 787                 assert.equal( mw.html.escape( '<mw awesome="awesome" value=\'test\' />' ),
 788                         '&lt;mw awesome=&quot;awesome&quot; value=&#039;test&#039; /&gt;', 'escape() escapes special characters to html entities' );
 789
 790                 assert.equal( mw.html.element(),
 791                         '<undefined/>', 'element() always returns a valid html string (even without arguments)' );
 792
 793                 assert.equal( mw.html.element( 'div' ), '<div/>', 'element() Plain DIV (simple)' );
 794
 795                 assert.equal( mw.html.element( 'div', {}, '' ), '<div></div>', 'element() Basic DIV (simple)' );
 796
 797                 assert.equal(
 798                         mw.html.element(
 799                                 'div', {
 800                                         id: 'foobar'
 801                                 }
 802                         ),
 803                         '<div id="foobar"/>',
 804                         'html.element DIV (attribs)' );
 805
 806                 assert.equal( mw.html.element( 'p', null, 12 ), '<p>12</p>', 'Numbers are valid content and should be casted to a string' );
 807
 808                 assert.equal( mw.html.element( 'p', { title: 12 }, '' ), '<p title="12"></p>', 'Numbers are valid attribute values' );
 809
 810                 // Example from https://www.mediawiki.org/wiki/ResourceLoader/Default_modules#mediaWiki.html
 811                 assert.equal(
 812                         mw.html.element(
 813                                 'div',
 814                                 {},
 815                                 new mw.html.Raw(
 816                                         mw.html.element( 'img', { src: '<' } )
 817                                 )
 818                         ),
 819                         '<div><img src="&lt;"/></div>',
 820                         'Raw inclusion of another element'
 821                 );
 822
 823                 assert.equal(
 824                         mw.html.element(
 825                                 'option', {
 826                                         selected: true
 827                                 }, 'Foo'
 828                         ),
 829                         '<option selected="selected">Foo</option>',
 830                         'Attributes may have boolean values. True copies the attribute name to the value.'
 831                 );
 832
 833                 assert.equal(
 834                         mw.html.element(
 835                                 'option', {
 836                                         value: 'foo',
 837                                         selected: false
 838                                 }, 'Foo'
 839                         ),
 840                         '<option value="foo">Foo</option>',
 841                         'Attributes may have boolean values. False keeps the attribute from output.'
 842                 );
 843
 844                 assert.equal( mw.html.element( 'div',
 845                         null, 'a' ),
 846                         '<div>a</div>',
 847                         'html.element DIV (content)' );
 848
 849                 assert.equal( mw.html.element( 'a',
 850                         { href: 'http://mediawiki.org/w/index.php?title=RL&action=history' }, 'a' ),
 851                         '<a href="http://mediawiki.org/w/index.php?title=RL&amp;action=history">a</a>',
 852                         'html.element DIV (attribs + content)' );
 853
 854         } );
 855
 856         QUnit.test( 'mw.hook', 13, function ( assert ) {
 857                 var hook, add, fire, chars, callback;
 858
 859                 mw.hook( 'test.hook.unfired' ).add( function () {
 860                         assert.ok( false, 'Unfired hook' );
 861                 } );
 862
 863                 mw.hook( 'test.hook.basic' ).add( function () {
 864                         assert.ok( true, 'Basic callback' );
 865                 } );
 866                 mw.hook( 'test.hook.basic' ).fire();
 867
 868                 mw.hook( 'hasOwnProperty' ).add( function () {
 869                         assert.ok( true, 'hook with name of predefined method' );
 870                 } );
 871                 mw.hook( 'hasOwnProperty' ).fire();
 872
 873                 mw.hook( 'test.hook.data' ).add( function ( data1, data2 ) {
 874                         assert.equal( data1, 'example', 'Fire with data (string param)' );
 875                         assert.deepEqual( data2, ['two'], 'Fire with data (array param)' );
 876                 } );
 877                 mw.hook( 'test.hook.data' ).fire( 'example', ['two'] );
 878
 879                 hook = mw.hook( 'test.hook.chainable' );
 880                 assert.strictEqual( hook.add(), hook, 'hook.add is chainable' );
 881                 assert.strictEqual( hook.remove(), hook, 'hook.remove is chainable' );
 882                 assert.strictEqual( hook.fire(), hook, 'hook.fire is chainable' );
 883
 884                 hook = mw.hook( 'test.hook.detach' );
 885                 add = hook.add;
 886                 fire = hook.fire;
 887                 add( function ( x, y ) {
 888                         assert.deepEqual( [x, y], ['x', 'y'], 'Detached (contextless) with data' );
 889                 } );
 890                 fire( 'x', 'y' );
 891
 892                 mw.hook( 'test.hook.fireBefore' ).fire().add( function () {
 893                         assert.ok( true, 'Invoke handler right away if it was fired before' );
 894                 } );
 895
 896                 mw.hook( 'test.hook.fireTwiceBefore' ).fire().fire().add( function () {
 897                         assert.ok( true, 'Invoke handler right away if it was fired before (only last one)' );
 898                 } );
 899
 900                 chars = [];
 901
 902                 mw.hook( 'test.hook.many' )
 903                         .add( function ( chr ) {
 904                                 chars.push( chr );
 905                         } )
 906                         .fire( 'x' ).fire( 'y' ).fire( 'z' )
 907                         .add( function ( chr ) {
 908                                 assert.equal( chr, 'z', 'Adding callback later invokes right away with last data' );
 909                         } );
 910
 911                 assert.deepEqual( chars, ['x', 'y', 'z'], 'Multiple callbacks with multiple fires' );
 912
 913                 chars = [];
 914                 callback = function ( chr ) {
 915                         chars.push( chr );
 916                 };
 917
 918                 mw.hook( 'test.hook.variadic' )
 919                         .add(
 920                                 callback,
 921                                 callback,
 922                                 function ( chr ) {
 923                                         chars.push( chr );
 924                                 },
 925                                 callback
 926                         )
 927                         .fire( 'x' )
 928                         .remove(
 929                                 function () {
 930                                         'not-added';
 931                                 },
 932                                 callback
 933                         )
 934                         .fire( 'y' )
 935                         .remove( callback )
 936                         .fire( 'z' );
 937
 938                 assert.deepEqual(
 939                         chars,
 940                         ['x', 'x', 'x', 'x', 'y', 'z'],
 941                         '"add" and "remove" support variadic arguments. ' +
 942                                 '"add" does not filter unique. ' +
 943                                 '"remove" removes all equal by reference. ' +
 944                                 '"remove" is silent if the function is not found'
 945                 );
 946         } );
 947
 948 }( mediaWiki, jQuery ) );