tests/phpunit/includes/HtmlTest.php

   1 <?php
   2 /** tests for includes/Html.php */
   3
   4 class HtmlTest extends MediaWikiTestCase {
   5
   6         protected function setUp() {
   7                 parent::setUp();
   8
   9                 $this->setMwGlobals( [
  10                         'wgUseMediaWikiUIEverywhere' => false,
  11                 ] );
  12
  13                 $langObj = Language::factory( 'en' );
  14
  15                 // Hardcode namespaces during test runs,
  16                 // so that html output based on existing namespaces
  17                 // can be properly evaluated.
  18                 $langObj->setNamespaces( [
  19                         -2 => 'Media',
  20                         -1 => 'Special',
  21                         0 => '',
  22                         1 => 'Talk',
  23                         2 => 'User',
  24                         3 => 'User_talk',
  25                         4 => 'MyWiki',
  26                         5 => 'MyWiki_Talk',
  27                         6 => 'File',
  28                         7 => 'File_talk',
  29                         8 => 'MediaWiki',
  30                         9 => 'MediaWiki_talk',
  31                         10 => 'Template',
  32                         11 => 'Template_talk',
  33                         14 => 'Category',
  34                         15 => 'Category_talk',
  35                         100 => 'Custom',
  36                         101 => 'Custom_talk',
  37                 ] );
  38                 $this->setUserLang( $langObj );
  39                 $this->setContentLang( $langObj );
  40         }
  41
  42         /**
  43          * @covers Html::element
  44          */
  45         public function testElementBasics() {
  46                 $this->assertEquals(
  47                         '<img/>',
  48                         Html::element( 'img', null, '' ),
  49                         'Self-closing tag for short-tag elements'
  50                 );
  51
  52                 $this->assertEquals(
  53                         '<element></element>',
  54                         Html::element( 'element', null, null ),
  55                         'Close tag for empty element (null, null)'
  56                 );
  57
  58                 $this->assertEquals(
  59                         '<element></element>',
  60                         Html::element( 'element', [], '' ),
  61                         'Close tag for empty element (array, string)'
  62                 );
  63         }
  64
  65         public function dataXmlMimeType() {
  66                 return [
  67                         // ( $mimetype, $isXmlMimeType )
  68                         # HTML is not an XML MimeType
  69                         [ 'text/html', false ],
  70                         # XML is an XML MimeType
  71                         [ 'text/xml', true ],
  72                         [ 'application/xml', true ],
  73                         # XHTML is an XML MimeType
  74                         [ 'application/xhtml+xml', true ],
  75                         # Make sure other +xml MimeTypes are supported
  76                         # SVG is another random MimeType even though we don't use it
  77                         [ 'image/svg+xml', true ],
  78                         # Complete random other MimeTypes are not XML
  79                         [ 'text/plain', false ],
  80                 ];
  81         }
  82
  83         /**
  84          * @dataProvider dataXmlMimeType
  85          * @covers Html::isXmlMimeType
  86          */
  87         public function testXmlMimeType( $mimetype, $isXmlMimeType ) {
  88                 $this->assertEquals( $isXmlMimeType, Html::isXmlMimeType( $mimetype ) );
  89         }
  90
  91         /**
  92          * @covers Html::expandAttributes
  93          */
  94         public function testExpandAttributesSkipsNullAndFalse() {
  95                 # ## EMPTY ########
  96                 $this->assertEmpty(
  97                         Html::expandAttributes( [ 'foo' => null ] ),
  98                         'skip keys with null value'
  99                 );
 100                 $this->assertEmpty(
 101                         Html::expandAttributes( [ 'foo' => false ] ),
 102                         'skip keys with false value'
 103                 );
 104                 $this->assertEquals(
 105                         ' foo=""',
 106                         Html::expandAttributes( [ 'foo' => '' ] ),
 107                         'keep keys with an empty string'
 108                 );
 109         }
 110
 111         /**
 112          * @covers Html::expandAttributes
 113          */
 114         public function testExpandAttributesForBooleans() {
 115                 $this->assertEquals(
 116                         '',
 117                         Html::expandAttributes( [ 'selected' => false ] ),
 118                         'Boolean attributes do not generates output when value is false'
 119                 );
 120                 $this->assertEquals(
 121                         '',
 122                         Html::expandAttributes( [ 'selected' => null ] ),
 123                         'Boolean attributes do not generates output when value is null'
 124                 );
 125
 126                 $this->assertEquals(
 127                         ' selected=""',
 128                         Html::expandAttributes( [ 'selected' => true ] ),
 129                         'Boolean attributes have no value when value is true'
 130                 );
 131                 $this->assertEquals(
 132                         ' selected=""',
 133                         Html::expandAttributes( [ 'selected' ] ),
 134                         'Boolean attributes have no value when value is true (passed as numerical array)'
 135                 );
 136         }
 137
 138         /**
 139          * @covers Html::expandAttributes
 140          */
 141         public function testExpandAttributesForNumbers() {
 142                 $this->assertEquals(
 143                         ' value="1"',
 144                         Html::expandAttributes( [ 'value' => 1 ] ),
 145                         'Integer value is cast to a string'
 146                 );
 147                 $this->assertEquals(
 148                         ' value="1.1"',
 149                         Html::expandAttributes( [ 'value' => 1.1 ] ),
 150                         'Float value is cast to a string'
 151                 );
 152         }
 153
 154         /**
 155          * @covers Html::expandAttributes
 156          */
 157         public function testExpandAttributesForObjects() {
 158                 $this->assertEquals(
 159                         ' value="stringValue"',
 160                         Html::expandAttributes( [ 'value' => new HtmlTestValue() ] ),
 161                         'Object value is converted to a string'
 162                 );
 163         }
 164
 165         /**
 166          * Test for Html::expandAttributes()
 167          * Please note it output a string prefixed with a space!
 168          * @covers Html::expandAttributes
 169          */
 170         public function testExpandAttributesVariousExpansions() {
 171                 # ## NOT EMPTY ####
 172                 $this->assertEquals(
 173                         ' empty_string=""',
 174                         Html::expandAttributes( [ 'empty_string' => '' ] ),
 175                         'Empty string is always quoted'
 176                 );
 177                 $this->assertEquals(
 178                         ' key="value"',
 179                         Html::expandAttributes( [ 'key' => 'value' ] ),
 180                         'Simple string value needs no quotes'
 181                 );
 182                 $this->assertEquals(
 183                         ' one="1"',
 184                         Html::expandAttributes( [ 'one' => 1 ] ),
 185                         'Number 1 value needs no quotes'
 186                 );
 187                 $this->assertEquals(
 188                         ' zero="0"',
 189                         Html::expandAttributes( [ 'zero' => 0 ] ),
 190                         'Number 0 value needs no quotes'
 191                 );
 192         }
 193
 194         /**
 195          * Html::expandAttributes has special features for HTML
 196          * attributes that use space separated lists and also
 197          * allows arrays to be used as values.
 198          * @covers Html::expandAttributes
 199          */
 200         public function testExpandAttributesListValueAttributes() {
 201                 # ## STRING VALUES
 202                 $this->assertEquals(
 203                         ' class="redundant spaces here"',
 204                         Html::expandAttributes( [ 'class' => ' redundant  spaces  here  ' ] ),
 205                         'Normalization should strip redundant spaces'
 206                 );
 207                 $this->assertEquals(
 208                         ' class="foo bar"',
 209                         Html::expandAttributes( [ 'class' => 'foo bar foo bar bar' ] ),
 210                         'Normalization should remove duplicates in string-lists'
 211                 );
 212                 # ## "EMPTY" ARRAY VALUES
 213                 $this->assertEquals(
 214                         ' class=""',
 215                         Html::expandAttributes( [ 'class' => [] ] ),
 216                         'Value with an empty array'
 217                 );
 218                 $this->assertEquals(
 219                         ' class=""',
 220                         Html::expandAttributes( [ 'class' => [ null, '', ' ', '  ' ] ] ),
 221                         'Array with null, empty string and spaces'
 222                 );
 223                 # ## NON-EMPTY ARRAY VALUES
 224                 $this->assertEquals(
 225                         ' class="foo bar"',
 226                         Html::expandAttributes( [ 'class' => [
 227                                 'foo',
 228                                 'bar',
 229                                 'foo',
 230                                 'bar',
 231                                 'bar',
 232                         ] ] ),
 233                         'Normalization should remove duplicates in the array'
 234                 );
 235                 $this->assertEquals(
 236                         ' class="foo bar"',
 237                         Html::expandAttributes( [ 'class' => [
 238                                 'foo bar',
 239                                 'bar foo',
 240                                 'foo',
 241                                 'bar bar',
 242                         ] ] ),
 243                         'Normalization should remove duplicates in string-lists in the array'
 244                 );
 245         }
 246
 247         /**
 248          * Test feature added by r96188, let pass attributes values as
 249          * a PHP array. Restricted to class,rel, accesskey.
 250          * @covers Html::expandAttributes
 251          */
 252         public function testExpandAttributesSpaceSeparatedAttributesWithBoolean() {
 253                 $this->assertEquals(
 254                         ' class="booltrue one"',
 255                         Html::expandAttributes( [ 'class' => [
 256                                 'booltrue' => true,
 257                                 'one' => 1,
 258
 259                                 # Method use isset() internally, make sure we do discard
 260                                 # attributes values which have been assigned well known values
 261                                 'emptystring' => '',
 262                                 'boolfalse' => false,
 263                                 'zero' => 0,
 264                                 'null' => null,
 265                         ] ] )
 266                 );
 267         }
 268
 269         /**
 270          * How do we handle duplicate keys in HTML attributes expansion?
 271          * We could pass a "class" the values: 'GREEN' and array( 'GREEN' => false )
 272          * The latter will take precedence.
 273          *
 274          * Feature added by r96188
 275          * @covers Html::expandAttributes
 276          */
 277         public function testValueIsAuthoritativeInSpaceSeparatedAttributesArrays() {
 278                 $this->assertEquals(
 279                         ' class=""',
 280                         Html::expandAttributes( [ 'class' => [
 281                                 'GREEN',
 282                                 'GREEN' => false,
 283                                 'GREEN',
 284                         ] ] )
 285                 );
 286         }
 287
 288         /**
 289          * @covers Html::expandAttributes
 290          * @expectedException MWException
 291          */
 292         public function testExpandAttributes_ArrayOnNonListValueAttribute_ThrowsException() {
 293                 // Real-life test case found in the Popups extension (see Gerrit cf0fd64),
 294                 // when used with an outdated BetaFeatures extension (see Gerrit deda1e7)
 295                 Html::expandAttributes( [
 296                         'src' => [
 297                                 'ltr' => 'ltr.svg',
 298                                 'rtl' => 'rtl.svg'
 299                         ]
 300                 ] );
 301         }
 302
 303         /**
 304          * @covers Html::namespaceSelector
 305          */
 306         public function testNamespaceSelector() {
 307                 $this->assertEquals(
 308                         '<select id="namespace" name="namespace">' . "\n" .
 309                                 '<option value="0">(Main)</option>' . "\n" .
 310                                 '<option value="1">Talk</option>' . "\n" .
 311                                 '<option value="2">User</option>' . "\n" .
 312                                 '<option value="3">User talk</option>' . "\n" .
 313                                 '<option value="4">MyWiki</option>' . "\n" .
 314                                 '<option value="5">MyWiki Talk</option>' . "\n" .
 315                                 '<option value="6">File</option>' . "\n" .
 316                                 '<option value="7">File talk</option>' . "\n" .
 317                                 '<option value="8">MediaWiki</option>' . "\n" .
 318                                 '<option value="9">MediaWiki talk</option>' . "\n" .
 319                                 '<option value="10">Template</option>' . "\n" .
 320                                 '<option value="11">Template talk</option>' . "\n" .
 321                                 '<option value="14">Category</option>' . "\n" .
 322                                 '<option value="15">Category talk</option>' . "\n" .
 323                                 '<option value="100">Custom</option>' . "\n" .
 324                                 '<option value="101">Custom talk</option>' . "\n" .
 325                                 '</select>',
 326                         Html::namespaceSelector(),
 327                         'Basic namespace selector without custom options'
 328                 );
 329
 330                 $this->assertEquals(
 331                         '<label for="mw-test-namespace">Select a namespace:</label>&#160;' .
 332                                 '<select id="mw-test-namespace" name="wpNamespace">' . "\n" .
 333                                 '<option value="all">all</option>' . "\n" .
 334                                 '<option value="0">(Main)</option>' . "\n" .
 335                                 '<option value="1">Talk</option>' . "\n" .
 336                                 '<option value="2" selected="">User</option>' . "\n" .
 337                                 '<option value="3">User talk</option>' . "\n" .
 338                                 '<option value="4">MyWiki</option>' . "\n" .
 339                                 '<option value="5">MyWiki Talk</option>' . "\n" .
 340                                 '<option value="6">File</option>' . "\n" .
 341                                 '<option value="7">File talk</option>' . "\n" .
 342                                 '<option value="8">MediaWiki</option>' . "\n" .
 343                                 '<option value="9">MediaWiki talk</option>' . "\n" .
 344                                 '<option value="10">Template</option>' . "\n" .
 345                                 '<option value="11">Template talk</option>' . "\n" .
 346                                 '<option value="14">Category</option>' . "\n" .
 347                                 '<option value="15">Category talk</option>' . "\n" .
 348                                 '<option value="100">Custom</option>' . "\n" .
 349                                 '<option value="101">Custom talk</option>' . "\n" .
 350                                 '</select>',
 351                         Html::namespaceSelector(
 352                                 [ 'selected' => '2', 'all' => 'all', 'label' => 'Select a namespace:' ],
 353                                 [ 'name' => 'wpNamespace', 'id' => 'mw-test-namespace' ]
 354                         ),
 355                         'Basic namespace selector with custom values'
 356                 );
 357
 358                 $this->assertEquals(
 359                         '<label for="namespace">Select a namespace:</label>&#160;' .
 360                                 '<select id="namespace" name="namespace">' . "\n" .
 361                                 '<option value="0">(Main)</option>' . "\n" .
 362                                 '<option value="1">Talk</option>' . "\n" .
 363                                 '<option value="2">User</option>' . "\n" .
 364                                 '<option value="3">User talk</option>' . "\n" .
 365                                 '<option value="4">MyWiki</option>' . "\n" .
 366                                 '<option value="5">MyWiki Talk</option>' . "\n" .
 367                                 '<option value="6">File</option>' . "\n" .
 368                                 '<option value="7">File talk</option>' . "\n" .
 369                                 '<option value="8">MediaWiki</option>' . "\n" .
 370                                 '<option value="9">MediaWiki talk</option>' . "\n" .
 371                                 '<option value="10">Template</option>' . "\n" .
 372                                 '<option value="11">Template talk</option>' . "\n" .
 373                                 '<option value="14">Category</option>' . "\n" .
 374                                 '<option value="15">Category talk</option>' . "\n" .
 375                                 '<option value="100">Custom</option>' . "\n" .
 376                                 '<option value="101">Custom talk</option>' . "\n" .
 377                                 '</select>',
 378                         Html::namespaceSelector(
 379                                 [ 'label' => 'Select a namespace:' ]
 380                         ),
 381                         'Basic namespace selector with a custom label but no id attribtue for the <select>'
 382                 );
 383         }
 384
 385         public function testCanFilterOutNamespaces() {
 386                 $this->assertEquals(
 387                         '<select id="namespace" name="namespace">' . "\n" .
 388                                 '<option value="2">User</option>' . "\n" .
 389                                 '<option value="4">MyWiki</option>' . "\n" .
 390                                 '<option value="5">MyWiki Talk</option>' . "\n" .
 391                                 '<option value="6">File</option>' . "\n" .
 392                                 '<option value="7">File talk</option>' . "\n" .
 393                                 '<option value="8">MediaWiki</option>' . "\n" .
 394                                 '<option value="9">MediaWiki talk</option>' . "\n" .
 395                                 '<option value="10">Template</option>' . "\n" .
 396                                 '<option value="11">Template talk</option>' . "\n" .
 397                                 '<option value="14">Category</option>' . "\n" .
 398                                 '<option value="15">Category talk</option>' . "\n" .
 399                                 '</select>',
 400                         Html::namespaceSelector(
 401                                 [ 'exclude' => [ 0, 1, 3, 100, 101 ] ]
 402                         ),
 403                         'Namespace selector namespace filtering.'
 404                 );
 405         }
 406
 407         public function testCanDisableANamespaces() {
 408                 $this->assertEquals(
 409                         '<select id="namespace" name="namespace">' . "\n" .
 410                                 '<option disabled="" value="0">(Main)</option>' . "\n" .
 411                                 '<option disabled="" value="1">Talk</option>' . "\n" .
 412                                 '<option disabled="" value="2">User</option>' . "\n" .
 413                                 '<option disabled="" value="3">User talk</option>' . "\n" .
 414                                 '<option disabled="" value="4">MyWiki</option>' . "\n" .
 415                                 '<option value="5">MyWiki Talk</option>' . "\n" .
 416                                 '<option value="6">File</option>' . "\n" .
 417                                 '<option value="7">File talk</option>' . "\n" .
 418                                 '<option value="8">MediaWiki</option>' . "\n" .
 419                                 '<option value="9">MediaWiki talk</option>' . "\n" .
 420                                 '<option value="10">Template</option>' . "\n" .
 421                                 '<option value="11">Template talk</option>' . "\n" .
 422                                 '<option value="14">Category</option>' . "\n" .
 423                                 '<option value="15">Category talk</option>' . "\n" .
 424                                 '<option value="100">Custom</option>' . "\n" .
 425                                 '<option value="101">Custom talk</option>' . "\n" .
 426                                 '</select>',
 427                         Html::namespaceSelector( [
 428                                 'disable' => [ 0, 1, 2, 3, 4 ]
 429                         ] ),
 430                         'Namespace selector namespace disabling'
 431                 );
 432         }
 433
 434         /**
 435          * @dataProvider provideHtml5InputTypes
 436          * @covers Html::element
 437          */
 438         public function testHtmlElementAcceptsNewHtml5TypesInHtml5Mode( $HTML5InputType ) {
 439                 $this->assertEquals(
 440                         '<input type="' . $HTML5InputType . '"/>',
 441                         Html::element( 'input', [ 'type' => $HTML5InputType ] ),
 442                         'In HTML5, Html::element() should accept type="' . $HTML5InputType . '"'
 443                 );
 444         }
 445
 446         /**
 447          * List of input element types values introduced by HTML5
 448          * Full list at https://www.w3.org/TR/html-markup/input.html
 449          */
 450         public static function provideHtml5InputTypes() {
 451                 $types = [
 452                         'datetime',
 453                         'datetime-local',
 454                         'date',
 455                         'month',
 456                         'time',
 457                         'week',
 458                         'number',
 459                         'range',
 460                         'email',
 461                         'url',
 462                         'search',
 463                         'tel',
 464                         'color',
 465                 ];
 466                 $cases = [];
 467                 foreach ( $types as $type ) {
 468                         $cases[] = [ $type ];
 469                 }
 470
 471                 return $cases;
 472         }
 473
 474         /**
 475          * Test out Html::element drops or enforces default value
 476          * @covers Html::dropDefaults
 477          * @dataProvider provideElementsWithAttributesHavingDefaultValues
 478          */
 479         public function testDropDefaults( $expected, $element, $attribs, $message = '' ) {
 480                 $this->assertEquals( $expected, Html::element( $element, $attribs ), $message );
 481         }
 482
 483         public static function provideElementsWithAttributesHavingDefaultValues() {
 484                 # Use cases in a concise format:
 485                 # <expected>, <element name>, <array of attributes> [, <message>]
 486                 # Will be mapped to Html::element()
 487                 $cases = [];
 488
 489                 # ## Generic cases, match $attribDefault static array
 490                 $cases[] = [ '<area/>',
 491                         'area', [ 'shape' => 'rect' ]
 492                 ];
 493
 494                 $cases[] = [ '<button type="submit"></button>',
 495                         'button', [ 'formaction' => 'GET' ]
 496                 ];
 497                 $cases[] = [ '<button type="submit"></button>',
 498                         'button', [ 'formenctype' => 'application/x-www-form-urlencoded' ]
 499                 ];
 500
 501                 $cases[] = [ '<canvas></canvas>',
 502                         'canvas', [ 'height' => '150' ]
 503                 ];
 504                 $cases[] = [ '<canvas></canvas>',
 505                         'canvas', [ 'width' => '300' ]
 506                 ];
 507                 # Also check with numeric values
 508                 $cases[] = [ '<canvas></canvas>',
 509                         'canvas', [ 'height' => 150 ]
 510                 ];
 511                 $cases[] = [ '<canvas></canvas>',
 512                         'canvas', [ 'width' => 300 ]
 513                 ];
 514
 515                 $cases[] = [ '<form></form>',
 516                         'form', [ 'action' => 'GET' ]
 517                 ];
 518                 $cases[] = [ '<form></form>',
 519                         'form', [ 'autocomplete' => 'on' ]
 520                 ];
 521                 $cases[] = [ '<form></form>',
 522                         'form', [ 'enctype' => 'application/x-www-form-urlencoded' ]
 523                 ];
 524
 525                 $cases[] = [ '<input/>',
 526                         'input', [ 'formaction' => 'GET' ]
 527                 ];
 528                 $cases[] = [ '<input/>',
 529                         'input', [ 'type' => 'text' ]
 530                 ];
 531
 532                 $cases[] = [ '<keygen/>',
 533                         'keygen', [ 'keytype' => 'rsa' ]
 534                 ];
 535
 536                 $cases[] = [ '<link/>',
 537                         'link', [ 'media' => 'all' ]
 538                 ];
 539
 540                 $cases[] = [ '<menu></menu>',
 541                         'menu', [ 'type' => 'list' ]
 542                 ];
 543
 544                 $cases[] = [ '<script></script>',
 545                         'script', [ 'type' => 'text/javascript' ]
 546                 ];
 547
 548                 $cases[] = [ '<style></style>',
 549                         'style', [ 'media' => 'all' ]
 550                 ];
 551                 $cases[] = [ '<style></style>',
 552                         'style', [ 'type' => 'text/css' ]
 553                 ];
 554
 555                 $cases[] = [ '<textarea></textarea>',
 556                         'textarea', [ 'wrap' => 'soft' ]
 557                 ];
 558
 559                 # ## SPECIFIC CASES
 560
 561                 # <link type="text/css">
 562                 $cases[] = [ '<link/>',
 563                         'link', [ 'type' => 'text/css' ]
 564                 ];
 565
 566                 # <input> specific handling
 567                 $cases[] = [ '<input type="checkbox"/>',
 568                         'input', [ 'type' => 'checkbox', 'value' => 'on' ],
 569                         'Default value "on" is stripped of checkboxes',
 570                 ];
 571                 $cases[] = [ '<input type="radio"/>',
 572                         'input', [ 'type' => 'radio', 'value' => 'on' ],
 573                         'Default value "on" is stripped of radio buttons',
 574                 ];
 575                 $cases[] = [ '<input type="submit" value="Submit"/>',
 576                         'input', [ 'type' => 'submit', 'value' => 'Submit' ],
 577                         'Default value "Submit" is kept on submit buttons (for possible l10n issues)',
 578                 ];
 579                 $cases[] = [ '<input type="color"/>',
 580                         'input', [ 'type' => 'color', 'value' => '' ],
 581                 ];
 582                 $cases[] = [ '<input type="range"/>',
 583                         'input', [ 'type' => 'range', 'value' => '' ],
 584                 ];
 585
 586                 # <button> specific handling
 587                 # see remarks on http://msdn.microsoft.com/en-us/library/ie/ms535211%28v=vs.85%29.aspx
 588                 $cases[] = [ '<button type="submit"></button>',
 589                         'button', [ 'type' => 'submit' ],
 590                         'According to standard the default type is "submit". '
 591                                 . 'Depending on compatibility mode IE might use "button", instead.',
 592                 ];
 593
 594                 # <select> specific handling
 595                 $cases[] = [ '<select multiple=""></select>',
 596                         'select', [ 'size' => '4', 'multiple' => true ],
 597                 ];
 598                 # .. with numeric value
 599                 $cases[] = [ '<select multiple=""></select>',
 600                         'select', [ 'size' => 4, 'multiple' => true ],
 601                 ];
 602                 $cases[] = [ '<select></select>',
 603                         'select', [ 'size' => '1', 'multiple' => false ],
 604                 ];
 605                 # .. with numeric value
 606                 $cases[] = [ '<select></select>',
 607                         'select', [ 'size' => 1, 'multiple' => false ],
 608                 ];
 609
 610                 # Passing an array as value
 611                 $cases[] = [ '<a class="css-class-one css-class-two"></a>',
 612                         'a', [ 'class' => [ 'css-class-one', 'css-class-two' ] ],
 613                         "dropDefaults accepts values given as an array"
 614                 ];
 615
 616                 # FIXME: doDropDefault should remove defaults given in an array
 617                 # Expected should be '<a></a>'
 618                 $cases[] = [ '<a class=""></a>',
 619                         'a', [ 'class' => [ '', '' ] ],
 620                         "dropDefaults accepts values given as an array"
 621                 ];
 622
 623                 # Craft the Html elements
 624                 $ret = [];
 625                 foreach ( $cases as $case ) {
 626                         $ret[] = [
 627                                 $case[0],
 628                                 $case[1], $case[2],
 629                                 isset( $case[3] ) ? $case[3] : ''
 630                         ];
 631                 }
 632
 633                 return $ret;
 634         }
 635
 636         public function testWrapperInput() {
 637                 $this->assertEquals(
 638                         '<input type="radio" value="testval" name="testname"/>',
 639                         Html::input( 'testname', 'testval', 'radio' ),
 640                         'Input wrapper with type and value.'
 641                 );
 642                 $this->assertEquals(
 643                         '<input name="testname"/>',
 644                         Html::input( 'testname' ),
 645                         'Input wrapper with all default values.'
 646                 );
 647         }
 648
 649         public function testWrapperCheck() {
 650                 $this->assertEquals(
 651                         '<input type="checkbox" value="1" name="testname"/>',
 652                         Html::check( 'testname' ),
 653                         'Checkbox wrapper unchecked.'
 654                 );
 655                 $this->assertEquals(
 656                         '<input checked="" type="checkbox" value="1" name="testname"/>',
 657                         Html::check( 'testname', true ),
 658                         'Checkbox wrapper checked.'
 659                 );
 660                 $this->assertEquals(
 661                         '<input type="checkbox" value="testval" name="testname"/>',
 662                         Html::check( 'testname', false, [ 'value' => 'testval' ] ),
 663                         'Checkbox wrapper with a value override.'
 664                 );
 665         }
 666
 667         public function testWrapperRadio() {
 668                 $this->assertEquals(
 669                         '<input type="radio" value="1" name="testname"/>',
 670                         Html::radio( 'testname' ),
 671                         'Radio wrapper unchecked.'
 672                 );
 673                 $this->assertEquals(
 674                         '<input checked="" type="radio" value="1" name="testname"/>',
 675                         Html::radio( 'testname', true ),
 676                         'Radio wrapper checked.'
 677                 );
 678                 $this->assertEquals(
 679                         '<input type="radio" value="testval" name="testname"/>',
 680                         Html::radio( 'testname', false, [ 'value' => 'testval' ] ),
 681                         'Radio wrapper with a value override.'
 682                 );
 683         }
 684
 685         public function testWrapperLabel() {
 686                 $this->assertEquals(
 687                         '<label for="testid">testlabel</label>',
 688                         Html::label( 'testlabel', 'testid' ),
 689                         'Label wrapper'
 690                 );
 691         }
 692
 693         public static function provideSrcSetImages() {
 694                 return [
 695                         [ [], '', 'when there are no images, return empty string' ],
 696                         [
 697                                 [ '1x' => '1x.png', '1.5x' => '1_5x.png', '2x' => '2x.png' ],
 698                                 '1x.png 1x, 1_5x.png 1.5x, 2x.png 2x',
 699                                 'pixel depth keys may include a trailing "x"'
 700                         ],
 701                         [
 702                                 [ '1'  => '1x.png', '1.5' => '1_5x.png', '2'  => '2x.png' ],
 703                                 '1x.png 1x, 1_5x.png 1.5x, 2x.png 2x',
 704                                 'pixel depth keys may omit a trailing "x"'
 705                         ],
 706                         [
 707                                 [ '1'  => 'small.png', '1.5' => 'large.png', '2'  => 'large.png' ],
 708                                 'small.png 1x, large.png 1.5x',
 709                                 'omit larger duplicates'
 710                         ],
 711                         [
 712                                 [ '1'  => 'small.png', '2'  => 'large.png', '1.5' => 'large.png' ],
 713                                 'small.png 1x, large.png 1.5x',
 714                                 'omit larger duplicates in irregular order'
 715                         ],
 716                 ];
 717         }
 718
 719         /**
 720          * @dataProvider provideSrcSetImages
 721          * @covers Html::srcSet
 722          */
 723         public function testSrcSet( $images, $expected, $message ) {
 724                 $this->assertEquals( Html::srcSet( $images ), $expected, $message );
 725         }
 726 }
 727
 728 class HtmlTestValue {
 729         function __toString() {
 730                 return 'stringValue';
 731         }
 732 }