test/unit/data.js

   1 QUnit.module( "data", { afterEach: moduleTeardown } );
   2
   3 QUnit.test( "expando", function( assert ) {
   4         assert.expect( 1 );
   5
   6         assert.equal( jQuery.expando !== undefined, true, "jQuery is exposing the expando" );
   7 } );
   8
   9 QUnit.test( "jQuery.data & removeData, expected returns", function( assert ) {
  10         assert.expect( 4 );
  11         var elem = document.body;
  12
  13         assert.equal(
  14                 jQuery.data( elem, "hello", "world" ), "world",
  15                 "jQuery.data( elem, key, value ) returns value"
  16         );
  17         assert.equal(
  18                 jQuery.data( elem, "hello" ), "world",
  19                 "jQuery.data( elem, key ) returns value"
  20         );
  21         assert.deepEqual(
  22                 jQuery.data( elem, { goodnight: "moon" } ), { goodnight: "moon" },
  23                 "jQuery.data( elem, obj ) returns obj"
  24         );
  25         assert.equal(
  26                 jQuery.removeData( elem, "hello" ), undefined,
  27                 "jQuery.removeData( elem, key, value ) returns undefined"
  28         );
  29
  30 } );
  31
  32 QUnit.test( "jQuery._data & _removeData, expected returns", function( assert ) {
  33         assert.expect( 4 );
  34         var elem = document.body;
  35
  36         assert.equal(
  37                 jQuery._data( elem, "hello", "world" ), "world",
  38                 "jQuery._data( elem, key, value ) returns value"
  39         );
  40         assert.equal(
  41                 jQuery._data( elem, "hello" ), "world",
  42                 "jQuery._data( elem, key ) returns value"
  43         );
  44         assert.deepEqual(
  45                 jQuery._data( elem, { goodnight: "moon" } ), { goodnight: "moon" },
  46                 "jQuery._data( elem, obj ) returns obj"
  47         );
  48         assert.equal(
  49                 jQuery._removeData( elem, "hello" ), undefined,
  50                 "jQuery._removeData( elem, key, value ) returns undefined"
  51         );
  52 } );
  53
  54 QUnit.test( "jQuery.hasData no side effects", function( assert ) {
  55         assert.expect( 1 );
  56         var obj = {};
  57
  58         jQuery.hasData( obj );
  59
  60         assert.equal( Object.getOwnPropertyNames( obj ).length, 0,
  61                 "No data expandos where added when calling jQuery.hasData(o)"
  62         );
  63 } );
  64
  65 function dataTests( elem, assert ) {
  66         var dataObj, internalDataObj;
  67
  68         assert.equal( jQuery.data( elem, "foo" ), undefined, "No data exists initially" );
  69         assert.strictEqual( jQuery.hasData( elem ), false, "jQuery.hasData agrees no data exists initially" );
  70
  71         dataObj = jQuery.data( elem );
  72         assert.equal( typeof dataObj, "object", "Calling data with no args gives us a data object reference" );
  73         assert.strictEqual( jQuery.data( elem ), dataObj, "Calling jQuery.data returns the same data object when called multiple times" );
  74
  75         assert.strictEqual( jQuery.hasData( elem ), false, "jQuery.hasData agrees no data exists even when an empty data obj exists" );
  76
  77         dataObj.foo = "bar";
  78         assert.equal( jQuery.data( elem, "foo" ), "bar", "Data is readable by jQuery.data when set directly on a returned data object" );
  79
  80         assert.strictEqual( jQuery.hasData( elem ), true, "jQuery.hasData agrees data exists when data exists" );
  81
  82         jQuery.data( elem, "foo", "baz" );
  83         assert.equal( jQuery.data( elem, "foo" ), "baz", "Data can be changed by jQuery.data" );
  84         assert.equal( dataObj.foo, "baz", "Changes made through jQuery.data propagate to referenced data object" );
  85
  86         jQuery.data( elem, "foo", undefined );
  87         assert.equal( jQuery.data( elem, "foo" ), "baz", "Data is not unset by passing undefined to jQuery.data" );
  88
  89         jQuery.data( elem, "foo", null );
  90         assert.strictEqual( jQuery.data( elem, "foo" ), null, "Setting null using jQuery.data works OK" );
  91
  92         jQuery.data( elem, "foo", "foo1" );
  93
  94         jQuery.data( elem, { "bar": "baz", "boom": "bloz" } );
  95         assert.strictEqual( jQuery.data( elem, "foo" ), "foo1", "Passing an object extends the data object instead of replacing it" );
  96         assert.equal( jQuery.data( elem, "boom" ), "bloz", "Extending the data object works" );
  97
  98         jQuery._data( elem, "foo", "foo2", true );
  99         assert.equal( jQuery._data( elem, "foo" ), "foo2", "Setting internal data works" );
 100         assert.equal( jQuery.data( elem, "foo" ), "foo1", "Setting internal data does not override user data" );
 101
 102         internalDataObj = jQuery._data( elem );
 103         assert.ok( internalDataObj, "Internal data object exists" );
 104         assert.notStrictEqual( dataObj, internalDataObj, "Internal data object is not the same as user data object" );
 105
 106         assert.strictEqual( elem.boom, undefined, "Data is never stored directly on the object" );
 107
 108         jQuery.removeData( elem, "foo" );
 109         assert.strictEqual( jQuery.data( elem, "foo" ), undefined, "jQuery.removeData removes single properties" );
 110
 111         jQuery.removeData( elem );
 112         assert.strictEqual( jQuery._data( elem ), internalDataObj, "jQuery.removeData does not remove internal data if it exists" );
 113
 114         jQuery.data( elem, "foo", "foo1" );
 115         jQuery._data( elem, "foo", "foo2" );
 116
 117         assert.equal( jQuery.data( elem, "foo" ), "foo1", "(sanity check) Ensure data is set in user data object" );
 118         assert.equal( jQuery._data( elem, "foo" ), "foo2", "(sanity check) Ensure data is set in internal data object" );
 119
 120         assert.strictEqual( jQuery._data( elem, jQuery.expando ), undefined, "Removing the last item in internal data destroys the internal data object" );
 121
 122         jQuery._data( elem, "foo", "foo2" );
 123         assert.equal( jQuery._data( elem, "foo" ), "foo2", "(sanity check) Ensure data is set in internal data object" );
 124
 125         jQuery.removeData( elem, "foo" );
 126         assert.equal( jQuery._data( elem, "foo" ), "foo2", "(sanity check) jQuery.removeData for user data does not remove internal data" );
 127 }
 128
 129 QUnit.test( "jQuery.data(div)", function( assert ) {
 130         assert.expect( 25 );
 131
 132         var div = document.createElement( "div" );
 133
 134         dataTests( div, assert );
 135 } );
 136
 137 QUnit.test( "jQuery.data({})", function( assert ) {
 138         assert.expect( 25 );
 139
 140         dataTests( {}, assert );
 141 } );
 142
 143 QUnit.test( "jQuery.data(window)", function( assert ) {
 144         assert.expect( 25 );
 145
 146         // remove bound handlers from window object to stop potential false positives caused by fix for trac-5280 in
 147         // transports/xhr.js
 148         jQuery( window ).off( "unload" );
 149
 150         dataTests( window, assert );
 151 } );
 152
 153 QUnit.test( "jQuery.data(document)", function( assert ) {
 154         assert.expect( 25 );
 155
 156         dataTests( document, assert );
 157 } );
 158
 159 QUnit.test( "jQuery.data(<embed>)", function( assert ) {
 160         assert.expect( 25 );
 161
 162         dataTests( document.createElement( "embed" ), assert );
 163 } );
 164
 165 QUnit.test( "jQuery.data(object/flash)", function( assert ) {
 166         assert.expect( 25 );
 167
 168         var flash = document.createElement( "object" );
 169         flash.setAttribute( "classid", "clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" );
 170
 171         dataTests( flash, assert );
 172 } );
 173
 174 // attempting to access the data of an undefined jQuery element should be undefined
 175 QUnit.test( "jQuery().data() === undefined (trac-14101)", function( assert ) {
 176         assert.expect( 2 );
 177
 178         assert.strictEqual( jQuery().data(), undefined );
 179         assert.strictEqual( jQuery().data( "key" ), undefined );
 180 } );
 181
 182 QUnit.test( ".data()", function( assert ) {
 183         assert.expect( 5 );
 184
 185         var div, dataObj, nodiv, obj;
 186
 187         div = jQuery( "#foo" );
 188         assert.strictEqual( div.data( "foo" ), undefined, "Make sure that missing result is undefined" );
 189         div.data( "test", "success" );
 190
 191         dataObj = div.data();
 192
 193         assert.deepEqual( dataObj, { test: "success" }, "data() returns entire data object with expected properties" );
 194         assert.strictEqual( div.data( "foo" ), undefined, "Make sure that missing result is still undefined" );
 195
 196         nodiv = jQuery( "#unfound" );
 197         assert.equal( nodiv.data(), null, "data() on empty set returns null" );
 198
 199         obj = { foo: "bar" };
 200         jQuery( obj ).data( "foo", "baz" );
 201
 202         dataObj = jQuery.extend( true, {}, jQuery( obj ).data() );
 203
 204         assert.deepEqual( dataObj, { "foo": "baz" }, "Retrieve data object from a wrapped JS object (trac-7524)" );
 205 } );
 206
 207 function testDataTypes( $obj, assert ) {
 208         jQuery.each( {
 209                 "null": null,
 210                 "true": true,
 211                 "false": false,
 212                 "zero": 0,
 213                 "one": 1,
 214                 "empty string": "",
 215                 "empty array": [],
 216                 "array": [ 1 ],
 217                 "empty object": {},
 218                 "object": { foo: "bar" },
 219                 "date": new Date(),
 220                 "regex": /test/,
 221                 "function": function() {}
 222         }, function( type, value ) {
 223                 assert.strictEqual( $obj.data( "test", value ).data( "test" ), value, "Data set to " + type );
 224         } );
 225 }
 226
 227 QUnit.test( "jQuery(Element).data(String, Object).data(String)", function( assert ) {
 228         assert.expect( 18 );
 229         var parent = jQuery( "<div><div></div></div>" ),
 230                 div = parent.children();
 231
 232         assert.strictEqual( div.data( "test" ), undefined, "No data exists initially" );
 233         assert.strictEqual( div.data( "test", "success" ).data( "test" ), "success", "Data added" );
 234         assert.strictEqual( div.data( "test", "overwritten" ).data( "test" ), "overwritten", "Data overwritten" );
 235         assert.strictEqual( div.data( "test", undefined ).data( "test" ), "overwritten", ".data(key,undefined) does nothing but is chainable (trac-5571)" );
 236         assert.strictEqual( div.data( "notexist" ), undefined, "No data exists for unset key" );
 237         testDataTypes( div, assert );
 238
 239         parent.remove();
 240 } );
 241
 242 QUnit.test( "jQuery(plain Object).data(String, Object).data(String)", function( assert ) {
 243         assert.expect( 16 );
 244
 245         // trac-3748
 246         var $obj = jQuery( { exists: true } );
 247         assert.strictEqual( $obj.data( "nothing" ), undefined, "Non-existent data returns undefined" );
 248         assert.strictEqual( $obj.data( "exists" ), undefined, "Object properties are not returned as data" );
 249         testDataTypes( $obj, assert );
 250
 251         // Clean up
 252         $obj.removeData();
 253         assert.deepEqual( $obj[ 0 ], { exists: true }, "removeData does not clear the object" );
 254 } );
 255
 256 QUnit.test( ".data(object) does not retain references. trac-13815", function( assert ) {
 257         assert.expect( 2 );
 258
 259         var $divs = jQuery( "<div></div><div></div>" ).appendTo( "#qunit-fixture" );
 260
 261         $divs.data( { "type": "foo" } );
 262         $divs.eq( 0 ).data( "type", "bar" );
 263
 264         assert.equal( $divs.eq( 0 ).data( "type" ), "bar", "Correct updated value" );
 265         assert.equal( $divs.eq( 1 ).data( "type" ), "foo", "Original value retained" );
 266 } );
 267
 268 QUnit.test( "data-* attributes", function( assert ) {
 269         assert.expect( 46 );
 270
 271         var prop, i, l, metadata, elem,
 272                 obj, obj2, check, num, num2,
 273                 parseJSON = JSON.parse,
 274                 div = jQuery( "<div>" ),
 275                 child = jQuery( "<div data-myobj='old data' data-ignored=\"DOM\" data-other='test' data-foo-42='boosh'></div>" ),
 276                 dummy = jQuery( "<div data-myobj='old data' data-ignored=\"DOM\" data-other='test' data-foo-42='boosh'></div>" );
 277
 278         assert.equal( div.data( "attr" ), undefined, "Check for non-existing data-attr attribute" );
 279
 280         div.attr( "data-attr", "exists" );
 281         assert.equal( div.data( "attr" ), "exists", "Check for existing data-attr attribute" );
 282
 283         div.attr( "data-attr", "exists2" );
 284         assert.equal( div.data( "attr" ), "exists", "Check that updates to data- don't update .data()" );
 285
 286         div.data( "attr", "internal" ).attr( "data-attr", "external" );
 287         assert.equal( div.data( "attr" ), "internal", "Check for .data('attr') precedence (internal > external data-* attribute)" );
 288
 289         div.remove();
 290
 291         child.appendTo( "#qunit-fixture" );
 292         assert.equal( child.data( "myobj" ), "old data", "Value accessed from data-* attribute" );
 293         assert.equal( child.data( "foo-42" ), "boosh", "camelCasing does not affect numbers (gh-1751)" );
 294
 295         child.data( "myobj", "replaced" );
 296         assert.equal( child.data( "myobj" ), "replaced", "Original data overwritten" );
 297
 298         child.data( "ignored", "cache" );
 299         assert.equal( child.data( "ignored" ), "cache", "Cached data used before DOM data-* fallback" );
 300
 301         obj = child.data();
 302         obj2 = dummy.data();
 303         check = [ "myobj", "ignored", "other", "foo-42" ];
 304         num = 0;
 305         num2 = 0;
 306
 307         dummy.remove();
 308
 309         for ( i = 0, l = check.length; i < l; i++ ) {
 310                 assert.ok( obj[ check[ i ] ], "Make sure data- property exists when calling data-." );
 311                 assert.ok( obj2[ check[ i ] ], "Make sure data- property exists when calling data-." );
 312         }
 313
 314         for ( prop in obj ) {
 315                 num++;
 316         }
 317
 318         assert.equal( num, check.length, "Make sure that the right number of properties came through." );
 319
 320         /* eslint-disable-next-line no-unused-vars */
 321         for ( prop in obj2 ) {
 322                 num2++;
 323         }
 324
 325         assert.equal( num2, check.length, "Make sure that the right number of properties came through." );
 326
 327         child.attr( "data-other", "newvalue" );
 328
 329         assert.equal( child.data( "other" ), "test", "Make sure value was pulled in properly from a .data()." );
 330
 331         // attribute parsing
 332         i = 0;
 333         JSON.parse = function() {
 334                 i++;
 335                 return parseJSON.apply( this, arguments );
 336         };
 337
 338         child
 339                 .attr( "data-true", "true" )
 340                 .attr( "data-false", "false" )
 341                 .attr( "data-five", "5" )
 342                 .attr( "data-point", "5.5" )
 343                 .attr( "data-pointe", "5.5E3" )
 344                 .attr( "data-grande", "5.574E9" )
 345                 .attr( "data-hexadecimal", "0x42" )
 346                 .attr( "data-pointbad", "5..5" )
 347                 .attr( "data-pointbad2", "-." )
 348                 .attr( "data-bigassnum", "123456789123456789123456789" )
 349                 .attr( "data-badjson", "{123}" )
 350                 .attr( "data-badjson2", "[abc]" )
 351                 .attr( "data-notjson", " {}" )
 352                 .attr( "data-notjson2", "[] " )
 353                 .attr( "data-empty", "" )
 354                 .attr( "data-space", " " )
 355                 .attr( "data-null", "null" )
 356                 .attr( "data-string", "test" );
 357
 358         assert.strictEqual( child.data( "true" ), true, "Primitive true read from attribute" );
 359         assert.strictEqual( child.data( "false" ), false, "Primitive false read from attribute" );
 360         assert.strictEqual( child.data( "five" ), 5, "Integer read from attribute" );
 361         assert.strictEqual( child.data( "point" ), 5.5, "Floating-point number read from attribute" );
 362         assert.strictEqual( child.data( "pointe" ), "5.5E3",
 363                 "Exponential-notation number read from attribute as string" );
 364         assert.strictEqual( child.data( "grande" ), "5.574E9",
 365                 "Big exponential-notation number read from attribute as string" );
 366         assert.strictEqual( child.data( "hexadecimal" ), "0x42",
 367                 "Hexadecimal number read from attribute as string" );
 368         assert.strictEqual( child.data( "pointbad" ), "5..5",
 369                 "Extra-point non-number read from attribute as string" );
 370         assert.strictEqual( child.data( "pointbad2" ), "-.",
 371                 "No-digit non-number read from attribute as string" );
 372         assert.strictEqual( child.data( "bigassnum" ), "123456789123456789123456789",
 373                 "Bad bigass number read from attribute as string" );
 374         assert.strictEqual( child.data( "badjson" ), "{123}", "Bad JSON object read from attribute as string" );
 375         assert.strictEqual( child.data( "badjson2" ), "[abc]", "Bad JSON array read from attribute as string" );
 376         assert.strictEqual( child.data( "notjson" ), " {}",
 377                 "JSON object with leading non-JSON read from attribute as string" );
 378         assert.strictEqual( child.data( "notjson2" ), "[] ",
 379                 "JSON array with trailing non-JSON read from attribute as string" );
 380         assert.strictEqual( child.data( "empty" ), "", "Empty string read from attribute" );
 381         assert.strictEqual( child.data( "space" ), " ", "Whitespace string read from attribute" );
 382         assert.strictEqual( child.data( "null" ), null, "Primitive null read from attribute" );
 383         assert.strictEqual( child.data( "string" ), "test", "Typical string read from attribute" );
 384         assert.equal( i, 2, "Correct number of JSON parse attempts when reading from attributes" );
 385
 386         JSON.parse = parseJSON;
 387         child.remove();
 388
 389         // tests from metadata plugin
 390         function testData( index, elem ) {
 391                 switch ( index ) {
 392                 case 0:
 393                         assert.equal( jQuery( elem ).data( "foo" ), "bar", "Check foo property" );
 394                         assert.equal( jQuery( elem ).data( "bar" ), "baz", "Check baz property" );
 395                         break;
 396                 case 1:
 397                         assert.equal( jQuery( elem ).data( "test" ), "bar", "Check test property" );
 398                         assert.equal( jQuery( elem ).data( "bar" ), "baz", "Check bar property" );
 399                         break;
 400                 case 2:
 401                         assert.equal( jQuery( elem ).data( "zoooo" ), "bar", "Check zoooo property" );
 402                         assert.deepEqual( jQuery( elem ).data( "bar" ), { "test": "baz" }, "Check bar property" );
 403                         break;
 404                 case 3:
 405                         assert.equal( jQuery( elem ).data( "number" ), true, "Check number property" );
 406                         assert.deepEqual( jQuery( elem ).data( "stuff" ), [ 2, 8 ], "Check stuff property" );
 407                         break;
 408                 default:
 409                         assert.ok( false, [ "Assertion failed on index ", index, ", with data" ].join( "" ) );
 410                 }
 411         }
 412
 413         metadata = "<ol><li class='test test2' data-foo='bar' data-bar='baz' data-arr='[1,2]'>Some stuff</li><li class='test test2' data-test='bar' data-bar='baz'>Some stuff</li><li class='test test2' data-zoooo='bar' data-bar='{\"test\":\"baz\"}'>Some stuff</li><li class='test test2' data-number=true data-stuff='[2,8]'>Some stuff</li></ol>";
 414         elem = jQuery( metadata ).appendTo( "#qunit-fixture" );
 415
 416         elem.find( "li" ).each( testData );
 417         elem.remove();
 418 } );
 419
 420 QUnit.test( ".data(Object)", function( assert ) {
 421         assert.expect( 4 );
 422
 423         var obj, jqobj,
 424                 div = jQuery( "<div></div>" );
 425
 426         div.data( { "test": "in", "test2": "in2" } );
 427         assert.equal( div.data( "test" ), "in", "Verify setting an object in data" );
 428         assert.equal( div.data( "test2" ), "in2", "Verify setting an object in data" );
 429
 430         obj = { test: "unset" };
 431         jqobj = jQuery( obj );
 432
 433         jqobj.data( "test", "unset" );
 434         jqobj.data( { "test": "in", "test2": "in2" } );
 435         assert.equal( jQuery.data( obj ).test, "in", "Verify setting an object on an object extends the data object" );
 436         assert.equal( obj.test2, undefined, "Verify setting an object on an object does not extend the object" );
 437
 438         // manually clean up detached elements
 439         div.remove();
 440 } );
 441
 442 QUnit.test( "jQuery.removeData", function( assert ) {
 443         assert.expect( 10 );
 444
 445         var obj,
 446                 div = jQuery( "#foo" )[ 0 ];
 447         jQuery.data( div, "test", "testing" );
 448         jQuery.removeData( div, "test" );
 449         assert.equal( jQuery.data( div, "test" ), undefined, "Check removal of data" );
 450
 451         jQuery.data( div, "test2", "testing" );
 452         jQuery.removeData( div );
 453         assert.ok( !jQuery.data( div, "test2" ), "Make sure that the data property no longer exists." );
 454         assert.ok( !div[ jQuery.expando ], "Make sure the expando no longer exists, as well." );
 455
 456         jQuery.data( div, {
 457                 test3: "testing",
 458                 test4: "testing"
 459         } );
 460         jQuery.removeData( div, "test3 test4" );
 461         assert.ok( !jQuery.data( div, "test3" ) || jQuery.data( div, "test4" ), "Multiple delete with spaces." );
 462
 463         jQuery.data( div, {
 464                 test3: "testing",
 465                 test4: "testing"
 466         } );
 467         jQuery.removeData( div, [ "test3", "test4" ] );
 468         assert.ok( !jQuery.data( div, "test3" ) || jQuery.data( div, "test4" ), "Multiple delete by array." );
 469
 470         jQuery.data( div, {
 471                 "test3 test4": "testing",
 472                 "test3": "testing"
 473         } );
 474         jQuery.removeData( div, "test3 test4" );
 475         assert.ok( !jQuery.data( div, "test3 test4" ), "Multiple delete with spaces deleted key with exact name" );
 476         assert.ok( jQuery.data( div, "test3" ), "Left the partial matched key alone" );
 477
 478         obj = {};
 479         jQuery.data( obj, "test", "testing" );
 480         assert.equal( jQuery( obj ).data( "test" ), "testing", "verify data on plain object" );
 481         jQuery.removeData( obj, "test" );
 482         assert.equal( jQuery.data( obj, "test" ), undefined, "Check removal of data on plain object" );
 483
 484         jQuery.data( window, "BAD", true );
 485         jQuery.removeData( window, "BAD" );
 486         assert.ok( !jQuery.data( window, "BAD" ), "Make sure that the value was not still set." );
 487 } );
 488
 489 QUnit.test( ".removeData()", function( assert ) {
 490         assert.expect( 6 );
 491         var div = jQuery( "#foo" );
 492         div.data( "test", "testing" );
 493         div.removeData( "test" );
 494         assert.equal( div.data( "test" ), undefined, "Check removal of data" );
 495
 496         div.data( "test", "testing" );
 497         div.data( "test.foo", "testing2" );
 498         div.removeData( "test.bar" );
 499         assert.equal( div.data( "test.foo" ), "testing2", "Make sure data is intact" );
 500         assert.equal( div.data( "test" ), "testing", "Make sure data is intact" );
 501
 502         div.removeData( "test" );
 503         assert.equal( div.data( "test.foo" ), "testing2", "Make sure data is intact" );
 504         assert.equal( div.data( "test" ), undefined, "Make sure data is intact" );
 505
 506         div.removeData( "test.foo" );
 507         assert.equal( div.data( "test.foo" ), undefined, "Make sure data is intact" );
 508 } );
 509
 510 QUnit.test( "JSON serialization (trac-8108)", function( assert ) {
 511         assert.expect( 1 );
 512
 513         var obj = { "foo": "bar" };
 514         jQuery.data( obj, "hidden", true );
 515
 516         assert.equal( JSON.stringify( obj ), "{\"foo\":\"bar\"}", "Expando is hidden from JSON.stringify" );
 517 } );
 518
 519 QUnit.test( ".data should follow html5 specification regarding camel casing", function( assert ) {
 520         assert.expect( 12 );
 521
 522         var div = jQuery( "<div id='myObject' data-w-t-f='ftw' data-big-a-little-a='bouncing-b' data-foo='a' data-foo-bar='b' data-foo-bar-baz='c'></div>" )
 523                 .prependTo( "body" );
 524
 525         assert.equal( div.data().wTF, "ftw", "Verify single letter data-* key" );
 526         assert.equal( div.data().bigALittleA, "bouncing-b", "Verify single letter mixed data-* key" );
 527
 528         assert.equal( div.data().foo, "a", "Verify single word data-* key" );
 529         assert.equal( div.data().fooBar, "b", "Verify multiple word data-* key" );
 530         assert.equal( div.data().fooBarBaz, "c", "Verify multiple word data-* key" );
 531
 532         assert.equal( div.data( "foo" ), "a", "Verify single word data-* key" );
 533         assert.equal( div.data( "fooBar" ), "b", "Verify multiple word data-* key" );
 534         assert.equal( div.data( "fooBarBaz" ), "c", "Verify multiple word data-* key" );
 535
 536         div.data( "foo-bar", "d" );
 537
 538         assert.equal( div.data( "fooBar" ), "d", "Verify updated data-* key" );
 539         assert.equal( div.data( "foo-bar" ), "d", "Verify updated data-* key" );
 540
 541         assert.equal( div.data( "fooBar" ), "d", "Verify updated data-* key (fooBar)" );
 542         assert.equal( div.data( "foo-bar" ), "d", "Verify updated data-* key (foo-bar)" );
 543
 544         div.remove();
 545 } );
 546
 547 QUnit.test( ".data should not miss preset data-* w/ hyphenated property names", function( assert ) {
 548
 549         assert.expect( 2 );
 550
 551         var div = jQuery( "<div></div>", { id: "hyphened" } ).appendTo( "#qunit-fixture" ),
 552                 test = {
 553                         "camelBar": "camelBar",
 554                         "hyphen-foo": "hyphen-foo"
 555                 };
 556
 557         div.data( test );
 558
 559         jQuery.each( test, function( i, k ) {
 560                 assert.equal( div.data( k ), k, "data with property '" + k + "' was correctly found" );
 561         } );
 562 } );
 563
 564 QUnit.test( "jQuery.data should not miss data-* w/ hyphenated property names trac-14047", function( assert ) {
 565
 566         assert.expect( 1 );
 567
 568         var div = jQuery( "<div></div>" );
 569
 570         div.data( "foo-bar", "baz" );
 571
 572         assert.equal( jQuery.data( div[ 0 ], "foo-bar" ), "baz", "data with property 'foo-bar' was correctly found" );
 573 } );
 574
 575 QUnit.test( ".data should not miss attr() set data-* with hyphenated property names", function( assert ) {
 576         assert.expect( 2 );
 577
 578         var a, b;
 579
 580         a = jQuery( "<div></div>" ).appendTo( "#qunit-fixture" );
 581
 582         a.attr( "data-long-param", "test" );
 583         a.data( "long-param", { a: 2 } );
 584
 585         assert.deepEqual( a.data( "long-param" ), { a: 2 }, "data with property long-param was found, 1" );
 586
 587         b = jQuery( "<div></div>" ).appendTo( "#qunit-fixture" );
 588
 589         b.attr( "data-long-param", "test" );
 590         b.data( "long-param" );
 591         b.data( "long-param", { a: 2 } );
 592
 593         assert.deepEqual( b.data( "long-param" ), { a: 2 }, "data with property long-param was found, 2" );
 594 } );
 595
 596 QUnit.test( ".data always sets data with the camelCased key (gh-2257)", function( assert ) {
 597         assert.expect( 18 );
 598
 599         var div = jQuery( "<div>" ).appendTo( "#qunit-fixture" ),
 600                 datas = {
 601                         "non-empty": {
 602                                 key: "nonEmpty",
 603                                 value: "a string"
 604                         },
 605                         "empty-string": {
 606                                 key: "emptyString",
 607                                 value: ""
 608                         },
 609                         "one-value": {
 610                                 key: "oneValue",
 611                                 value: 1
 612                         },
 613                         "zero-value": {
 614                                 key: "zeroValue",
 615                                 value: 0
 616                         },
 617                         "an-array": {
 618                                 key: "anArray",
 619                                 value: []
 620                         },
 621                         "an-object": {
 622                                 key: "anObject",
 623                                 value: {}
 624                         },
 625                         "bool-true": {
 626                                 key: "boolTrue",
 627                                 value: true
 628                         },
 629                         "bool-false": {
 630                                 key: "boolFalse",
 631                                 value: false
 632                         },
 633                         "some-json": {
 634                                 key: "someJson",
 635                                 value: "{ \"foo\": \"bar\" }"
 636                         }
 637                 };
 638
 639         jQuery.each( datas, function( key, val ) {
 640                 div.data( key, val.value );
 641                 var allData = div.data();
 642                 assert.equal( allData[ key ], undefined, ".data does not store with hyphenated keys" );
 643                 assert.equal( allData[ val.key ], val.value, ".data stores the camelCased key" );
 644         } );
 645 } );
 646
 647 QUnit.test( ".data should not strip more than one hyphen when camelCasing (gh-2070)", function( assert ) {
 648         assert.expect( 3 );
 649         var div = jQuery( "<div data-nested-single='single' data-nested--double='double' data-nested---triple='triple'></div>" ).appendTo( "#qunit-fixture" ),
 650                 allData = div.data();
 651
 652         assert.equal( allData.nestedSingle, "single", "Key is correctly camelCased" );
 653         assert.equal( allData[ "nested-Double" ], "double", "Key with double hyphens is correctly camelCased" );
 654         assert.equal( allData[ "nested--Triple" ], "triple", "Key with triple hyphens is correctly camelCased" );
 655 } );
 656
 657 QUnit.test( ".data supports interoperable hyphenated/camelCase get/set of properties with arbitrary non-null|NaN|undefined values", function( assert ) {
 658
 659         var div = jQuery( "<div></div>", { id: "hyphened" } ).appendTo( "#qunit-fixture" ),
 660                 datas = {
 661                         "non-empty": {
 662                                 key: "nonEmpty",
 663                                 value: "a string"
 664                         },
 665                         "empty-string": {
 666                                 key: "emptyString",
 667                                 value: ""
 668                         },
 669                         "one-value": {
 670                                 key: "oneValue",
 671                                 value: 1
 672                         },
 673                         "zero-value": {
 674                                 key: "zeroValue",
 675                                 value: 0
 676                         },
 677                         "an-array": {
 678                                 key: "anArray",
 679                                 value: []
 680                         },
 681                         "an-object": {
 682                                 key: "anObject",
 683                                 value: {}
 684                         },
 685                         "bool-true": {
 686                                 key: "boolTrue",
 687                                 value: true
 688                         },
 689                         "bool-false": {
 690                                 key: "boolFalse",
 691                                 value: false
 692                         },
 693                         "some-json": {
 694                                 key: "someJson",
 695                                 value: "{ \"foo\": \"bar\" }"
 696                         },
 697
 698                         "num-1-middle": {
 699                                 key: "num-1Middle",
 700                                 value: true
 701                         },
 702                         "num-end-2": {
 703                                 key: "numEnd-2",
 704                                 value: true
 705                         },
 706                         "2-num-start": {
 707                                 key: "2NumStart",
 708                                 value: true
 709                         },
 710
 711                         // Vendor prefixes are not treated in a special way.
 712                         "-ms-foo": {
 713                                 key: "MsFoo",
 714                                 value: true
 715                         },
 716                         "-moz-foo": {
 717                                 key: "MozFoo",
 718                                 value: true
 719                         },
 720                         "-webkit-foo": {
 721                                 key: "WebkitFoo",
 722                                 value: true
 723                         },
 724                         "-fake-foo": {
 725                                 key: "FakeFoo",
 726                                 value: true
 727                         }
 728                 };
 729
 730         assert.expect( 32 );
 731
 732         jQuery.each( datas, function( key, val ) {
 733                 div.data( key, val.value );
 734
 735                 assert.deepEqual( div.data( key ), val.value, "get: " + key );
 736                 assert.deepEqual( div.data( val.key ), val.value, "get: " + val.key );
 737         } );
 738 } );
 739
 740 QUnit.test( ".data supports interoperable removal of hyphenated/camelCase properties", function( assert ) {
 741         var div = jQuery( "<div></div>", { id: "hyphened" } ).appendTo( "#qunit-fixture" ),
 742                 rdashAlpha = /-([a-z])/g,
 743                 datas = {
 744                         "non-empty": "a string",
 745                         "empty-string": "",
 746                         "one-value": 1,
 747                         "zero-value": 0,
 748                         "an-array": [],
 749                         "an-object": {},
 750                         "bool-true": true,
 751                         "bool-false": false,
 752                         "some-json": "{ \"foo\": \"bar\" }"
 753                 };
 754
 755         assert.expect( 27 );
 756
 757         function fcamelCase( all, letter ) {
 758                 return letter.toUpperCase();
 759         }
 760
 761         jQuery.each( datas, function( key, val ) {
 762                 div.data( key, val );
 763
 764                 assert.deepEqual( div.data( key ), val, "get: " + key );
 765                 assert.deepEqual(
 766                         div.data( key.replace( rdashAlpha, fcamelCase ) ),
 767                         val,
 768                         "get: " + key.replace( rdashAlpha, fcamelCase )
 769                 );
 770
 771                 div.removeData( key );
 772
 773                 assert.equal( div.data( key ), undefined, "get: " + key );
 774
 775         } );
 776 } );
 777
 778 QUnit.test( ".data supports interoperable removal of properties SET TWICE trac-13850", function( assert ) {
 779         var div = jQuery( "<div>" ).appendTo( "#qunit-fixture" ),
 780                 datas = {
 781                         "non-empty": "a string",
 782                         "empty-string": "",
 783                         "one-value": 1,
 784                         "zero-value": 0,
 785                         "an-array": [],
 786                         "an-object": {},
 787                         "bool-true": true,
 788                         "bool-false": false,
 789                         "some-json": "{ \"foo\": \"bar\" }"
 790                 };
 791
 792         assert.expect( 9 );
 793
 794         jQuery.each( datas, function( key, val ) {
 795                 div.data( key, val );
 796                 div.data( key, val );
 797
 798                 div.removeData( key );
 799
 800                 assert.equal( div.data( key ), undefined, "removal: " + key );
 801         } );
 802 } );
 803
 804 QUnit.test( ".removeData supports removal of hyphenated properties via array (trac-12786, gh-2257)", function( assert ) {
 805         assert.expect( 4 );
 806
 807         var div, plain, compare;
 808
 809         div = jQuery( "<div>" ).appendTo( "#qunit-fixture" );
 810         plain = jQuery( {} );
 811
 812         // Properties should always be camelCased
 813         compare = {
 814
 815                 // From batch assignment .data({ "a-a": 1 })
 816                 "aA": 1,
 817
 818                 // From property, value assignment .data( "b-b", 1 )
 819                 "bB": 1
 820         };
 821
 822         // Mixed assignment
 823         div.data( { "a-a": 1 } ).data( "b-b", 1 );
 824         plain.data( { "a-a": 1 } ).data( "b-b", 1 );
 825
 826         assert.deepEqual( div.data(), compare, "Data appears as expected. (div)" );
 827         assert.deepEqual( plain.data(), compare, "Data appears as expected. (plain)" );
 828
 829         div.removeData( [ "a-a", "b-b" ] );
 830         plain.removeData( [ "a-a", "b-b" ] );
 831
 832         assert.deepEqual( div.data(), {}, "Data is empty. (div)" );
 833         assert.deepEqual( plain.data(), {}, "Data is empty. (plain)" );
 834 } );
 835
 836 // Test originally by Moschel
 837 QUnit.test( ".removeData should not throw exceptions. (trac-10080)", function( assert ) {
 838         var done = assert.async();
 839         assert.expect( 1 );
 840         var frame = jQuery( "#loadediframe" );
 841         jQuery( frame[ 0 ].contentWindow ).on( "unload", function() {
 842                 assert.ok( true, "called unload" );
 843                 done();
 844         } );
 845
 846         // change the url to trigger unload
 847         frame.attr( "src", baseURL + "iframe.html?param=true" );
 848 } );
 849
 850 QUnit.test( ".data only checks element attributes once. trac-8909", function( assert ) {
 851         assert.expect( 2 );
 852         var testing = {
 853                         "test": "testing",
 854                         "test2": "testing"
 855                 },
 856                 element = jQuery( "<div data-test='testing'>" ),
 857                 node = element[ 0 ];
 858
 859         // set an attribute using attr to ensure it
 860         node.setAttribute( "data-test2", "testing" );
 861         assert.deepEqual( element.data(), testing, "Sanity Check" );
 862
 863         node.setAttribute( "data-test3", "testing" );
 864         assert.deepEqual( element.data(), testing, "The data didn't change even though the data-* attrs did" );
 865
 866         // clean up data cache
 867         element.remove();
 868 } );
 869
 870 QUnit.test( "data-* with JSON value can have newlines", function( assert ) {
 871         assert.expect( 1 );
 872
 873         var x = jQuery( "<div data-some='{\n\"foo\":\n\t\"bar\"\n}'></div>" );
 874         assert.equal( x.data( "some" ).foo, "bar", "got a JSON data- attribute with spaces" );
 875         x.remove();
 876 } );
 877
 878 QUnit.test( ".data doesn't throw when calling selection is empty. trac-13551", function( assert ) {
 879         assert.expect( 1 );
 880
 881         try {
 882                 jQuery( null ).data( "prop" );
 883                 assert.ok( true, "jQuery(null).data('prop') does not throw" );
 884         } catch ( e ) {
 885                 assert.ok( false, e.message );
 886         }
 887 } );
 888
 889 QUnit.test( "acceptData", function( assert ) {
 890         assert.expect( 10 );
 891
 892         var flash, pdf, form;
 893
 894         assert.equal( jQuery( document ).data( "test", 42 ).data( "test" ), 42, "document" );
 895         assert.equal( jQuery( document.documentElement ).data( "test", 42 ).data( "test" ), 42, "documentElement" );
 896         assert.equal( jQuery( {} ).data( "test", 42 ).data( "test" ), 42, "object" );
 897         assert.equal( jQuery( document.createElement( "embed" ) ).data( "test", 42 ).data( "test" ), 42, "embed" );
 898
 899         flash = document.createElement( "object" );
 900         flash.setAttribute( "classid", "clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" );
 901         assert.equal( jQuery( flash ).data( "test", 42 ).data( "test" ), 42, "flash" );
 902
 903         pdf = document.createElement( "object" );
 904         pdf.setAttribute( "classid", "clsid:CA8A9780-280D-11CF-A24D-444553540000" );
 905         assert.equal( jQuery( pdf ).data( "test", 42 ).data( "test" ), 42, "pdf" );
 906
 907         assert.strictEqual( jQuery( document.createComment( "" ) ).data( "test", 42 ).data( "test" ), undefined, "comment" );
 908         assert.strictEqual( jQuery( document.createTextNode( "" ) ).data( "test", 42 ).data( "test" ), undefined, "text" );
 909         assert.strictEqual( jQuery( document.createDocumentFragment() ).data( "test", 42 ).data( "test" ), undefined, "documentFragment" );
 910
 911         form = jQuery( "#form" ).append( "<input id='nodeType'/><input id='nodeName'/>" )[ 0 ];
 912         assert.equal( jQuery( form ) .data( "test", 42 ).data( "test" ), 42, "form with aliased DOM properties" );
 913 } );
 914
 915 QUnit.test( "Check proper data removal of non-element descendants nodes (trac-8335)", function( assert ) {
 916         assert.expect( 1 );
 917
 918         var div = jQuery( "<div>text</div>" ),
 919                 text = div.contents();
 920
 921         text.data( "test", "test" ); // This should be a noop.
 922         div.remove();
 923
 924         assert.ok( !text.data( "test" ), "Be sure data is not stored in non-element" );
 925 } );
 926
 927 testIframe(
 928         "enumerate data attrs on body (trac-14894)",
 929         "data/dataAttrs.html",
 930         function( assert, jQuery, window, document, result ) {
 931                 assert.expect( 1 );
 932                 assert.equal( result, "ok", "enumeration of data- attrs on body" );
 933         }
 934 );
 935
 936 QUnit.test( "Check that the expando is removed when there's no more data", function( assert ) {
 937         assert.expect( 2 );
 938
 939         var key,
 940                 div = jQuery( "<div></div>" );
 941         div.data( "some", "data" );
 942         assert.equal( div.data( "some" ), "data", "Data is added" );
 943         div.removeData( "some" );
 944
 945         // Make sure the expando is gone
 946         for ( key in div[ 0 ] ) {
 947                 if ( /^jQuery/.test( key ) ) {
 948                         assert.strictEqual( div[ 0 ][ key ], undefined, "Expando was not removed when there was no more data" );
 949                 }
 950         }
 951 } );
 952
 953 QUnit.test( "Check that the expando is removed when there's no more data on non-nodes", function( assert ) {
 954         assert.expect( 1 );
 955
 956         var key,
 957                 obj = jQuery( { key: 42 } );
 958         obj.data( "some", "data" );
 959         assert.equal( obj.data( "some" ), "data", "Data is added" );
 960         obj.removeData( "some" );
 961
 962         // Make sure the expando is gone
 963         for ( key in obj[ 0 ] ) {
 964                 if ( /^jQuery/.test( key ) ) {
 965                         assert.ok( false, "Expando was not removed when there was no more data" );
 966                 }
 967         }
 968 } );
 969
 970 QUnit.test( ".data(prop) does not create expando", function( assert ) {
 971         assert.expect( 1 );
 972
 973         var key,
 974                 div = jQuery( "<div></div>" );
 975
 976         div.data( "foo" );
 977         assert.equal( jQuery.hasData( div[ 0 ] ), false, "No data exists after access" );
 978
 979         // Make sure no expando has been added
 980         for ( key in div[ 0 ] ) {
 981                 if ( /^jQuery/.test( key ) ) {
 982                         assert.ok( false, "Expando was created on access" );
 983                 }
 984         }
 985 } );
 986
 987 QUnit.test( "keys matching Object.prototype properties  (gh-3256)", function( assert ) {
 988         assert.expect( 2 );
 989
 990         var div = jQuery( "<div></div>" );
 991
 992         assert.strictEqual( div.data( "hasOwnProperty" ), undefined,
 993                 "hasOwnProperty not matched (before forced data creation)" );
 994
 995         // Force the creation of a data object for this element.
 996         div.data( { foo: "bar" } );
 997
 998         assert.strictEqual( div.data( "hasOwnProperty" ), undefined,
 999                 "hasOwnProperty not matched (after forced data creation)" );
1000 } );