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                 $langCode = 'en';
  10                 $langObj = Language::factory( $langCode );
  11
  12                 // Hardcode namespaces during test runs,
  13                 // so that html output based on existing namespaces
  14                 // can be properly evaluated.
  15                 $langObj->setNamespaces( array(
  16                         -2 => 'Media',
  17                         -1 => 'Special',
  18                         0 => '',
  19                         1 => 'Talk',
  20                         2 => 'User',
  21                         3 => 'User_talk',
  22                         4 => 'MyWiki',
  23                         5 => 'MyWiki_Talk',
  24                         6 => 'File',
  25                         7 => 'File_talk',
  26                         8 => 'MediaWiki',
  27                         9 => 'MediaWiki_talk',
  28                         10 => 'Template',
  29                         11 => 'Template_talk',
  30                         14 => 'Category',
  31                         15 => 'Category_talk',
  32                         100 => 'Custom',
  33                         101 => 'Custom_talk',
  34                 ) );
  35
  36                 $this->setMwGlobals( array(
  37                         'wgLanguageCode' => $langCode,
  38                         'wgContLang' => $langObj,
  39                         'wgLang' => $langObj,
  40                         'wgHtml5' => true,
  41                         'wgWellFormedXml' => false,
  42                 ) );
  43         }
  44
  45         public function testElementBasics() {
  46                 $this->assertEquals(
  47                         '<img>',
  48                         Html::element( 'img', null, '' ),
  49                         'No close 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', array(), '' ),
  61                         'Close tag for empty element (array, string)'
  62                 );
  63
  64                 $this->setMwGlobals( 'wgWellFormedXml', true );
  65
  66                 $this->assertEquals(
  67                         '<img />',
  68                         Html::element( 'img', null, '' ),
  69                         'Self-closing tag for short-tag elements (wgWellFormedXml = true)'
  70                 );
  71         }
  72
  73         public function testExpandAttributesSkipsNullAndFalse() {
  74
  75                 ### EMPTY ########
  76                 $this->assertEmpty(
  77                         Html::expandAttributes( array( 'foo' => null ) ),
  78                         'skip keys with null value'
  79                 );
  80                 $this->assertEmpty(
  81                         Html::expandAttributes( array( 'foo' => false ) ),
  82                         'skip keys with false value'
  83                 );
  84                 $this->assertNotEmpty(
  85                         Html::expandAttributes( array( 'foo' => '' ) ),
  86                         'keep keys with an empty string'
  87                 );
  88         }
  89
  90         public function testExpandAttributesForBooleans() {
  91                 $this->assertEquals(
  92                         '',
  93                         Html::expandAttributes( array( 'selected' => false ) ),
  94                         'Boolean attributes do not generates output when value is false'
  95                 );
  96                 $this->assertEquals(
  97                         '',
  98                         Html::expandAttributes( array( 'selected' => null ) ),
  99                         'Boolean attributes do not generates output when value is null'
 100                 );
 101
 102                 $this->assertEquals(
 103                         ' selected',
 104                         Html::expandAttributes( array( 'selected' => true ) ),
 105                         'Boolean attributes have no value when value is true'
 106                 );
 107                 $this->assertEquals(
 108                         ' selected',
 109                         Html::expandAttributes( array( 'selected' ) ),
 110                         'Boolean attributes have no value when value is true (passed as numerical array)'
 111                 );
 112
 113                 $this->setMwGlobals( 'wgWellFormedXml', true );
 114
 115                 $this->assertEquals(
 116                         ' selected=""',
 117                         Html::expandAttributes( array( 'selected' => true ) ),
 118                         'Boolean attributes have empty string value when value is true (wgWellFormedXml)'
 119                 );
 120
 121                 $this->setMwGlobals( 'wgHtml5', false );
 122
 123                 $this->assertEquals(
 124                         ' selected="selected"',
 125                         Html::expandAttributes( array( 'selected' => true ) ),
 126                         'Boolean attributes have their key as value when value is true (wgWellFormedXml, wgHTML5 = false)'
 127                 );
 128         }
 129
 130         /**
 131          * Test for Html::expandAttributes()
 132          * Please note it output a string prefixed with a space!
 133          */
 134         public function testExpandAttributesVariousExpansions() {
 135                 ### NOT EMPTY ####
 136                 $this->assertEquals(
 137                         ' empty_string=""',
 138                         Html::expandAttributes( array( 'empty_string' => '' ) ),
 139                         'Empty string is always quoted'
 140                 );
 141                 $this->assertEquals(
 142                         ' key=value',
 143                         Html::expandAttributes( array( 'key' => 'value' ) ),
 144                         'Simple string value needs no quotes'
 145                 );
 146                 $this->assertEquals(
 147                         ' one=1',
 148                         Html::expandAttributes( array( 'one' => 1 ) ),
 149                         'Number 1 value needs no quotes'
 150                 );
 151                 $this->assertEquals(
 152                         ' zero=0',
 153                         Html::expandAttributes( array( 'zero' => 0 ) ),
 154                         'Number 0 value needs no quotes'
 155                 );
 156
 157                 $this->setMwGlobals( 'wgWellFormedXml', true );
 158
 159                 $this->assertEquals(
 160                         ' empty_string=""',
 161                         Html::expandAttributes( array( 'empty_string' => '' ) ),
 162                         'Attribute values are always quoted (wgWellFormedXml): Empty string'
 163                 );
 164                 $this->assertEquals(
 165                         ' key="value"',
 166                         Html::expandAttributes( array( 'key' => 'value' ) ),
 167                         'Attribute values are always quoted (wgWellFormedXml): Simple string'
 168                 );
 169                 $this->assertEquals(
 170                         ' one="1"',
 171                         Html::expandAttributes( array( 'one' => 1 ) ),
 172                         'Attribute values are always quoted (wgWellFormedXml): Number 1'
 173                 );
 174                 $this->assertEquals(
 175                         ' zero="0"',
 176                         Html::expandAttributes( array( 'zero' => 0 ) ),
 177                         'Attribute values are always quoted (wgWellFormedXml): Number 0'
 178                 );
 179         }
 180
 181         /**
 182          * Html::expandAttributes has special features for HTML
 183          * attributes that use space separated lists and also
 184          * allows arrays to be used as values.
 185          */
 186         public function testExpandAttributesListValueAttributes() {
 187                 ### STRING VALUES
 188                 $this->assertEquals(
 189                         ' class="redundant spaces here"',
 190                         Html::expandAttributes( array( 'class' => ' redundant  spaces  here  ' ) ),
 191                         'Normalization should strip redundant spaces'
 192                 );
 193                 $this->assertEquals(
 194                         ' class="foo bar"',
 195                         Html::expandAttributes( array( 'class' => 'foo bar foo bar bar' ) ),
 196                         'Normalization should remove duplicates in string-lists'
 197                 );
 198                 ### "EMPTY" ARRAY VALUES
 199                 $this->assertEquals(
 200                         ' class=""',
 201                         Html::expandAttributes( array( 'class' => array() ) ),
 202                         'Value with an empty array'
 203                 );
 204                 $this->assertEquals(
 205                         ' class=""',
 206                         Html::expandAttributes( array( 'class' => array( null, '', ' ', '  ' ) ) ),
 207                         'Array with null, empty string and spaces'
 208                 );
 209                 ### NON-EMPTY ARRAY VALUES
 210                 $this->assertEquals(
 211                         ' class="foo bar"',
 212                         Html::expandAttributes( array( 'class' => array(
 213                                 'foo',
 214                                 'bar',
 215                                 'foo',
 216                                 'bar',
 217                                 'bar',
 218                         ) ) ),
 219                         'Normalization should remove duplicates in the array'
 220                 );
 221                 $this->assertEquals(
 222                         ' class="foo bar"',
 223                         Html::expandAttributes( array( 'class' => array(
 224                                 'foo bar',
 225                                 'bar foo',
 226                                 'foo',
 227                                 'bar bar',
 228                         ) ) ),
 229                         'Normalization should remove duplicates in string-lists in the array'
 230                 );
 231         }
 232
 233         /**
 234          * Test feature added by r96188, let pass attributes values as
 235          * a PHP array. Restricted to class,rel, accesskey.
 236          */
 237         function testExpandAttributesSpaceSeparatedAttributesWithBoolean() {
 238                 $this->assertEquals(
 239                         ' class="booltrue one"',
 240                         Html::expandAttributes( array( 'class' => array(
 241                                 'booltrue' => true,
 242                                 'one' => 1,
 243
 244                                 # Method use isset() internally, make sure we do discard
 245                                 # attributes values which have been assigned well known values
 246                                 'emptystring' => '',
 247                                 'boolfalse' => false,
 248                                 'zero' => 0,
 249                                 'null' => null,
 250                         ) ) )
 251                 );
 252         }
 253
 254         /**
 255          * How do we handle duplicate keys in HTML attributes expansion?
 256          * We could pass a "class" the values: 'GREEN' and array( 'GREEN' => false )
 257          * The later will take precedence.
 258          *
 259          * Feature added by r96188
 260          */
 261         function testValueIsAuthoritativeInSpaceSeparatedAttributesArrays() {
 262                 $this->assertEquals(
 263                         ' class=""',
 264                         Html::expandAttributes( array( 'class' => array(
 265                                 'GREEN',
 266                                 'GREEN' => false,
 267                                 'GREEN',
 268                         ) ) )
 269                 );
 270         }
 271
 272         function testNamespaceSelector() {
 273                 $this->assertEquals(
 274                         '<select id=namespace name=namespace>' . "\n" .
 275                                 '<option value=0>(Main)</option>' . "\n" .
 276                                 '<option value=1>Talk</option>' . "\n" .
 277                                 '<option value=2>User</option>' . "\n" .
 278                                 '<option value=3>User talk</option>' . "\n" .
 279                                 '<option value=4>MyWiki</option>' . "\n" .
 280                                 '<option value=5>MyWiki Talk</option>' . "\n" .
 281                                 '<option value=6>File</option>' . "\n" .
 282                                 '<option value=7>File talk</option>' . "\n" .
 283                                 '<option value=8>MediaWiki</option>' . "\n" .
 284                                 '<option value=9>MediaWiki talk</option>' . "\n" .
 285                                 '<option value=10>Template</option>' . "\n" .
 286                                 '<option value=11>Template talk</option>' . "\n" .
 287                                 '<option value=14>Category</option>' . "\n" .
 288                                 '<option value=15>Category talk</option>' . "\n" .
 289                                 '<option value=100>Custom</option>' . "\n" .
 290                                 '<option value=101>Custom talk</option>' . "\n" .
 291                                 '</select>',
 292                         Html::namespaceSelector(),
 293                         'Basic namespace selector without custom options'
 294                 );
 295
 296                 $this->assertEquals(
 297                         '<label for=mw-test-namespace>Select a namespace:</label>&#160;' .
 298                                 '<select id=mw-test-namespace name=wpNamespace>' . "\n" .
 299                                 '<option value=all>all</option>' . "\n" .
 300                                 '<option value=0>(Main)</option>' . "\n" .
 301                                 '<option value=1>Talk</option>' . "\n" .
 302                                 '<option value=2 selected>User</option>' . "\n" .
 303                                 '<option value=3>User talk</option>' . "\n" .
 304                                 '<option value=4>MyWiki</option>' . "\n" .
 305                                 '<option value=5>MyWiki Talk</option>' . "\n" .
 306                                 '<option value=6>File</option>' . "\n" .
 307                                 '<option value=7>File talk</option>' . "\n" .
 308                                 '<option value=8>MediaWiki</option>' . "\n" .
 309                                 '<option value=9>MediaWiki talk</option>' . "\n" .
 310                                 '<option value=10>Template</option>' . "\n" .
 311                                 '<option value=11>Template talk</option>' . "\n" .
 312                                 '<option value=14>Category</option>' . "\n" .
 313                                 '<option value=15>Category talk</option>' . "\n" .
 314                                 '<option value=100>Custom</option>' . "\n" .
 315                                 '<option value=101>Custom talk</option>' . "\n" .
 316                                 '</select>',
 317                         Html::namespaceSelector(
 318                                 array( 'selected' => '2', 'all' => 'all', 'label' => 'Select a namespace:' ),
 319                                 array( 'name' => 'wpNamespace', 'id' => 'mw-test-namespace' )
 320                         ),
 321                         'Basic namespace selector with custom values'
 322                 );
 323
 324                 $this->assertEquals(
 325                         '<label for=namespace>Select a namespace:</label>&#160;' .
 326                                 '<select id=namespace name=namespace>' . "\n" .
 327                                 '<option value=0>(Main)</option>' . "\n" .
 328                                 '<option value=1>Talk</option>' . "\n" .
 329                                 '<option value=2>User</option>' . "\n" .
 330                                 '<option value=3>User talk</option>' . "\n" .
 331                                 '<option value=4>MyWiki</option>' . "\n" .
 332                                 '<option value=5>MyWiki Talk</option>' . "\n" .
 333                                 '<option value=6>File</option>' . "\n" .
 334                                 '<option value=7>File talk</option>' . "\n" .
 335                                 '<option value=8>MediaWiki</option>' . "\n" .
 336                                 '<option value=9>MediaWiki talk</option>' . "\n" .
 337                                 '<option value=10>Template</option>' . "\n" .
 338                                 '<option value=11>Template talk</option>' . "\n" .
 339                                 '<option value=14>Category</option>' . "\n" .
 340                                 '<option value=15>Category talk</option>' . "\n" .
 341                                 '<option value=100>Custom</option>' . "\n" .
 342                                 '<option value=101>Custom talk</option>' . "\n" .
 343                                 '</select>',
 344                         Html::namespaceSelector(
 345                                 array( 'label' => 'Select a namespace:' )
 346                         ),
 347                         'Basic namespace selector with a custom label but no id attribtue for the <select>'
 348                 );
 349         }
 350
 351         function testCanFilterOutNamespaces() {
 352                 $this->assertEquals(
 353                         '<select id=namespace name=namespace>' . "\n" .
 354                                 '<option value=2>User</option>' . "\n" .
 355                                 '<option value=4>MyWiki</option>' . "\n" .
 356                                 '<option value=5>MyWiki Talk</option>' . "\n" .
 357                                 '<option value=6>File</option>' . "\n" .
 358                                 '<option value=7>File talk</option>' . "\n" .
 359                                 '<option value=8>MediaWiki</option>' . "\n" .
 360                                 '<option value=9>MediaWiki talk</option>' . "\n" .
 361                                 '<option value=10>Template</option>' . "\n" .
 362                                 '<option value=11>Template talk</option>' . "\n" .
 363                                 '<option value=14>Category</option>' . "\n" .
 364                                 '<option value=15>Category talk</option>' . "\n" .
 365                                 '</select>',
 366                         Html::namespaceSelector(
 367                                 array( 'exclude' => array( 0, 1, 3, 100, 101 ) )
 368                         ),
 369                         'Namespace selector namespace filtering.'
 370                 );
 371         }
 372
 373         function testCanDisableANamespaces() {
 374                 $this->assertEquals(
 375                         '<select id=namespace name=namespace>' . "\n" .
 376                                 '<option disabled value=0>(Main)</option>' . "\n" .
 377                                 '<option disabled value=1>Talk</option>' . "\n" .
 378                                 '<option disabled value=2>User</option>' . "\n" .
 379                                 '<option disabled value=3>User talk</option>' . "\n" .
 380                                 '<option disabled value=4>MyWiki</option>' . "\n" .
 381                                 '<option value=5>MyWiki Talk</option>' . "\n" .
 382                                 '<option value=6>File</option>' . "\n" .
 383                                 '<option value=7>File talk</option>' . "\n" .
 384                                 '<option value=8>MediaWiki</option>' . "\n" .
 385                                 '<option value=9>MediaWiki talk</option>' . "\n" .
 386                                 '<option value=10>Template</option>' . "\n" .
 387                                 '<option value=11>Template talk</option>' . "\n" .
 388                                 '<option value=14>Category</option>' . "\n" .
 389                                 '<option value=15>Category talk</option>' . "\n" .
 390                                 '<option value=100>Custom</option>' . "\n" .
 391                                 '<option value=101>Custom talk</option>' . "\n" .
 392                                 '</select>',
 393                         Html::namespaceSelector( array(
 394                                 'disable' => array( 0, 1, 2, 3, 4 )
 395                         ) ),
 396                         'Namespace selector namespace disabling'
 397                 );
 398         }
 399
 400         /**
 401          * @dataProvider provideHtml5InputTypes
 402          */
 403         function testHtmlElementAcceptsNewHtml5TypesInHtml5Mode( $HTML5InputType ) {
 404                 $this->assertEquals(
 405                         '<input type=' . $HTML5InputType . '>',
 406                         Html::element( 'input', array( 'type' => $HTML5InputType ) ),
 407                         'In HTML5, HTML::element() should accept type="' . $HTML5InputType . '"'
 408                 );
 409         }
 410
 411         /**
 412          * List of input element types values introduced by HTML5
 413          * Full list at http://www.w3.org/TR/html-markup/input.html
 414          */
 415         public static function provideHtml5InputTypes() {
 416                 $types = array(
 417                         'datetime',
 418                         'datetime-local',
 419                         'date',
 420                         'month',
 421                         'time',
 422                         'week',
 423                         'number',
 424                         'range',
 425                         'email',
 426                         'url',
 427                         'search',
 428                         'tel',
 429                         'color',
 430                 );
 431                 $cases = array();
 432                 foreach ( $types as $type ) {
 433                         $cases[] = array( $type );
 434                 }
 435
 436                 return $cases;
 437         }
 438
 439         /**
 440          * Test out Html::element drops or enforces default value
 441          * @covers Html::dropDefaults
 442          * @dataProvider provideElementsWithAttributesHavingDefaultValues
 443          */
 444         function testDropDefaults( $expected, $element, $attribs, $message = '' ) {
 445                 $this->assertEquals( $expected, Html::element( $element, $attribs ), $message );
 446         }
 447
 448         public static function provideElementsWithAttributesHavingDefaultValues() {
 449                 # Use cases in a concise format:
 450                 # <expected>, <element name>, <array of attributes> [, <message>]
 451                 # Will be mapped to Html::element()
 452                 $cases = array();
 453
 454                 ### Generic cases, match $attribDefault static array
 455                 $cases[] = array( '<area>',
 456                         'area', array( 'shape' => 'rect' )
 457                 );
 458
 459                 $cases[] = array( '<button type=submit></button>',
 460                         'button', array( 'formaction' => 'GET' )
 461                 );
 462                 $cases[] = array( '<button type=submit></button>',
 463                         'button', array( 'formenctype' => 'application/x-www-form-urlencoded' )
 464                 );
 465
 466                 $cases[] = array( '<canvas></canvas>',
 467                         'canvas', array( 'height' => '150' )
 468                 );
 469                 $cases[] = array( '<canvas></canvas>',
 470                         'canvas', array( 'width' => '300' )
 471                 );
 472                 # Also check with numeric values
 473                 $cases[] = array( '<canvas></canvas>',
 474                         'canvas', array( 'height' => 150 )
 475                 );
 476                 $cases[] = array( '<canvas></canvas>',
 477                         'canvas', array( 'width' => 300 )
 478                 );
 479
 480                 $cases[] = array( '<command>',
 481                         'command', array( 'type' => 'command' )
 482                 );
 483
 484                 $cases[] = array( '<form></form>',
 485                         'form', array( 'action' => 'GET' )
 486                 );
 487                 $cases[] = array( '<form></form>',
 488                         'form', array( 'autocomplete' => 'on' )
 489                 );
 490                 $cases[] = array( '<form></form>',
 491                         'form', array( 'enctype' => 'application/x-www-form-urlencoded' )
 492                 );
 493
 494                 $cases[] = array( '<input>',
 495                         'input', array( 'formaction' => 'GET' )
 496                 );
 497                 $cases[] = array( '<input>',
 498                         'input', array( 'type' => 'text' )
 499                 );
 500
 501                 $cases[] = array( '<keygen>',
 502                         'keygen', array( 'keytype' => 'rsa' )
 503                 );
 504
 505                 $cases[] = array( '<link>',
 506                         'link', array( 'media' => 'all' )
 507                 );
 508
 509                 $cases[] = array( '<menu></menu>',
 510                         'menu', array( 'type' => 'list' )
 511                 );
 512
 513                 $cases[] = array( '<script></script>',
 514                         'script', array( 'type' => 'text/javascript' )
 515                 );
 516
 517                 $cases[] = array( '<style></style>',
 518                         'style', array( 'media' => 'all' )
 519                 );
 520                 $cases[] = array( '<style></style>',
 521                         'style', array( 'type' => 'text/css' )
 522                 );
 523
 524                 $cases[] = array( '<textarea></textarea>',
 525                         'textarea', array( 'wrap' => 'soft' )
 526                 );
 527
 528                 ### SPECIFIC CASES
 529
 530                 # <link type="text/css">
 531                 $cases[] = array( '<link>',
 532                         'link', array( 'type' => 'text/css' )
 533                 );
 534
 535                 # <input> specific handling
 536                 $cases[] = array( '<input type=checkbox>',
 537                         'input', array( 'type' => 'checkbox', 'value' => 'on' ),
 538                         'Default value "on" is stripped of checkboxes',
 539                 );
 540                 $cases[] = array( '<input type=radio>',
 541                         'input', array( 'type' => 'radio', 'value' => 'on' ),
 542                         'Default value "on" is stripped of radio buttons',
 543                 );
 544                 $cases[] = array( '<input type=submit value=Submit>',
 545                         'input', array( 'type' => 'submit', 'value' => 'Submit' ),
 546                         'Default value "Submit" is kept on submit buttons (for possible l10n issues)',
 547                 );
 548                 $cases[] = array( '<input type=color>',
 549                         'input', array( 'type' => 'color', 'value' => '' ),
 550                 );
 551                 $cases[] = array( '<input type=range>',
 552                         'input', array( 'type' => 'range', 'value' => '' ),
 553                 );
 554
 555                 # <button> specific handling
 556                 # see remarks on http://msdn.microsoft.com/en-us/library/ie/ms535211%28v=vs.85%29.aspx
 557                 $cases[] = array( '<button type=submit></button>',
 558                         'button', array( 'type' => 'submit' ),
 559                         'According to standard the default type is "submit". Depending on compatibility mode IE might use "button", instead.',
 560                 );
 561
 562                 # <select> specifc handling
 563                 $cases[] = array( '<select multiple></select>',
 564                         'select', array( 'size' => '4', 'multiple' => true ),
 565                 );
 566                 # .. with numeric value
 567                 $cases[] = array( '<select multiple></select>',
 568                         'select', array( 'size' => 4, 'multiple' => true ),
 569                 );
 570                 $cases[] = array( '<select></select>',
 571                         'select', array( 'size' => '1', 'multiple' => false ),
 572                 );
 573                 # .. with numeric value
 574                 $cases[] = array( '<select></select>',
 575                         'select', array( 'size' => 1, 'multiple' => false ),
 576                 );
 577
 578                 # Passing an array as value
 579                 $cases[] = array( '<a class="css-class-one css-class-two"></a>',
 580                         'a', array( 'class' => array( 'css-class-one', 'css-class-two' ) ),
 581                         "dropDefaults accepts values given as an array"
 582                 );
 583
 584                 # FIXME: doDropDefault should remove defaults given in an array
 585                 # Expected should be '<a></a>'
 586                 $cases[] = array( '<a class=""></a>',
 587                         'a', array( 'class' => array( '', '' ) ),
 588                         "dropDefaults accepts values given as an array"
 589                 );
 590
 591                 # Craft the Html elements
 592                 $ret = array();
 593                 foreach ( $cases as $case ) {
 594                         $ret[] = array(
 595                                 $case[0],
 596                                 $case[1], $case[2],
 597                                 isset( $case[3] ) ? $case[3] : ''
 598                         );
 599                 }
 600
 601                 return $ret;
 602         }
 603
 604         public function testFormValidationBlacklist() {
 605                 $this->assertEmpty(
 606                         Html::expandAttributes( array( 'min' => 1, 'max' => 100, 'pattern' => 'abc', 'required' => true, 'step' => 2 ) ),
 607                         'Blacklist form validation attributes.'
 608                 );
 609                 $this->assertEquals(
 610                         ' step=any',
 611                         Html::expandAttributes( array( 'min' => 1, 'max' => 100, 'pattern' => 'abc', 'required' => true, 'step' => 'any' ) ),
 612                         'Allow special case "step=any".'
 613                 );
 614         }
 615 }