text: if ( jQuery.css ) {
  
  QUnit.module( "css", { afterEach: moduleTeardown } );
  
  QUnit.test( "css(String|Hash)", function( assert ) {
  	assert.expect( 42 );
  
  	assert.equal( jQuery( "#qunit-fixture" ).css( "display" ), "block", "Check for css property \"display\"" );
  
  	var $child, div, div2, width, height, child, prctval, checkval, old;
  
  	$child = jQuery( "#nothiddendivchild" ).css( { "width": "20%", "height": "20%" } );
  	assert.notEqual( $child.css( "width" ), "20px", "Retrieving a width percentage on the child of a hidden div returns percentage" );
  	assert.notEqual( $child.css( "height" ), "20px", "Retrieving a height percentage on the child of a hidden div returns percentage" );
  
  	div = jQuery( "<div/>" );
  
  	// These should be "auto" (or some better value)
  	// temporarily provide "0px" for backwards compat
  	assert.equal( div.css( "width" ), "0px", "Width on disconnected node." );
  	assert.equal( div.css( "height" ), "0px", "Height on disconnected node." );
  
  	div.css( { "width": 4, "height": 4 } );
  
  	assert.equal( div.css( "width" ), "4px", "Width on disconnected node." );
  	assert.equal( div.css( "height" ), "4px", "Height on disconnected node." );
  
  	div2 = jQuery( "<div style='display:none;'><input type='text' style='height:20px;'/><textarea style='height:20px;'/><div style='height:20px;'></div></div>" ).appendTo( "body" );
  
  	assert.equal( div2.find( "input" ).css( "height" ), "20px", "Height on hidden input." );
  	assert.equal( div2.find( "textarea" ).css( "height" ), "20px", "Height on hidden textarea." );
  	assert.equal( div2.find( "div" ).css( "height" ), "20px", "Height on hidden div." );
  
  	div2.remove();
  
  	// handle negative numbers by setting to zero #11604
  	jQuery( "#nothiddendiv" ).css( { "width": 1, "height": 1 } );
  
  	width = parseFloat( jQuery( "#nothiddendiv" ).css( "width" ) );
  	height = parseFloat( jQuery( "#nothiddendiv" ).css( "height" ) );
  	jQuery( "#nothiddendiv" ).css( { "overflow":"hidden", "width": -1, "height": -1 } );
  	assert.equal( parseFloat( jQuery( "#nothiddendiv" ).css( "width" ) ), 0, "Test negative width set to 0" );
  	assert.equal( parseFloat( jQuery( "#nothiddendiv" ).css( "height" ) ), 0, "Test negative height set to 0" );
  
  	assert.equal( jQuery( "<div style='display: none;'/>" ).css( "display" ), "none", "Styles on disconnected nodes" );
  
  	jQuery( "#floatTest" ).css( { "float": "right" } );
  	assert.equal( jQuery( "#floatTest" ).css( "float" ), "right", "Modified CSS float using \"float\": Assert float is right" );
  	jQuery( "#floatTest" ).css( { "font-size": "30px" } );
  	assert.equal( jQuery( "#floatTest" ).css( "font-size" ), "30px", "Modified CSS font-size: Assert font-size is 30px" );
  	jQuery.each( "0,0.25,0.5,0.75,1".split( "," ), function( i, n ) {
  		jQuery( "#foo" ).css( { "opacity": n } );
  
  		assert.equal( jQuery( "#foo" ).css( "opacity" ), parseFloat( n ), "Assert opacity is " + parseFloat( n ) + " as a String" );
  		jQuery( "#foo" ).css( { "opacity": parseFloat( n ) } );
  		assert.equal( jQuery( "#foo" ).css( "opacity" ), parseFloat( n ), "Assert opacity is " + parseFloat( n ) + " as a Number" );
  	} );
  	jQuery( "#foo" ).css( { "opacity": "" } );
  	assert.equal( jQuery( "#foo" ).css( "opacity" ), "1", "Assert opacity is 1 when set to an empty String" );
  
  	assert.equal( jQuery( "#empty" ).css( "opacity" ), "0", "Assert opacity is accessible" );
  	jQuery( "#empty" ).css( { "opacity": "1" } );
  	assert.equal( jQuery( "#empty" ).css( "opacity" ), "1", "Assert opacity is taken from style attribute when set" );
  
  	div = jQuery( "#nothiddendiv" );
  	child = jQuery( "#nothiddendivchild" );
  
  	assert.equal( parseInt( div.css( "fontSize" ), 10 ), 16, "Verify fontSize px set." );
  	assert.equal( parseInt( div.css( "font-size" ), 10 ), 16, "Verify fontSize px set." );
  	assert.equal( parseInt( child.css( "fontSize" ), 10 ), 16, "Verify fontSize px set." );
  	assert.equal( parseInt( child.css( "font-size" ), 10 ), 16, "Verify fontSize px set." );
  
  	child.css( "height", "100%" );
  	assert.equal( child[ 0 ].style.height, "100%", "Make sure the height is being set correctly." );
  
  	child.attr( "class", "em" );
  	assert.equal( parseInt( child.css( "fontSize" ), 10 ), 32, "Verify fontSize em set." );
  
  	// Have to verify this as the result depends upon the browser's CSS
  	// support for font-size percentages
  	child.attr( "class", "prct" );
  	prctval = parseInt( child.css( "fontSize" ), 10 );
  	checkval = 0;
  	if ( prctval === 16 || prctval === 24 ) {
  		checkval = prctval;
  	}
  
  	assert.equal( prctval, checkval, "Verify fontSize % set." );
  
  	assert.equal( typeof child.css( "width" ), "string", "Make sure that a string width is returned from css('width')." );
  
  	old = child[ 0 ].style.height;
  
  	// Test NaN
  	child.css( "height", parseFloat( "zoo" ) );
  	assert.equal( child[ 0 ].style.height, old, "Make sure height isn't changed on NaN." );
  
  	// Test null
  	child.css( "height", null );
  	assert.equal( child[ 0 ].style.height, old, "Make sure height isn't changed on null." );
  
  	old = child[ 0 ].style.fontSize;
  
  	// Test NaN
  	child.css( "font-size", parseFloat( "zoo" ) );
  	assert.equal( child[ 0 ].style.fontSize, old, "Make sure font-size isn't changed on NaN." );
  
  	// Test null
  	child.css( "font-size", null );
  	assert.equal( child[ 0 ].style.fontSize, old, "Make sure font-size isn't changed on null." );
  
  	assert.strictEqual( child.css( "x-fake" ), undefined, "Make sure undefined is returned from css(nonexistent)." );
  
  	div = jQuery( "<div/>" ).css( { position: "absolute", "z-index": 1000 } ).appendTo( "#qunit-fixture" );
  	assert.strictEqual( div.css( "z-index" ), "1000",
  		"Make sure that a string z-index is returned from css('z-index') (#14432)." );
  } );
  
  QUnit.test( "css() explicit and relative values", function( assert ) {
  	assert.expect( 29 );
  
  	var $elem = jQuery( "#nothiddendiv" );
  
  	$elem.css( { "width": 1, "height": 1, "paddingLeft": "1px", "opacity": 1 } );
  	assert.equal( $elem.css( "width" ), "1px", "Initial css set or width/height works (hash)" );
  	assert.equal( $elem.css( "paddingLeft" ), "1px", "Initial css set of paddingLeft works (hash)" );
  	assert.equal( $elem.css( "opacity" ), "1", "Initial css set of opacity works (hash)" );
  
  	$elem.css( { width: "+=9" } );
  	assert.equal( $elem.css( "width" ), "10px", "'+=9' on width (hash)" );
  
  	$elem.css( { "width": "-=9" } );
  	assert.equal( $elem.css( "width" ), "1px", "'-=9' on width (hash)" );
  
  	$elem.css( { "width": "+=9px" } );
  	assert.equal( $elem.css( "width" ), "10px", "'+=9px' on width (hash)" );
  
  	$elem.css( { "width": "-=9px" } );
  	assert.equal( $elem.css( "width" ), "1px", "'-=9px' on width (hash)" );
  
  	$elem.css( "width", "+=9" );
  	assert.equal( $elem.css( "width" ), "10px", "'+=9' on width (params)" );
  
  	$elem.css( "width", "-=9" );
  	assert.equal( $elem.css( "width" ), "1px", "'-=9' on width (params)" );
  
  	$elem.css( "width", "+=9px" );
  	assert.equal( $elem.css( "width" ), "10px", "'+=9px' on width (params)" );
  
  	$elem.css( "width", "-=9px" );
  	assert.equal( $elem.css( "width" ), "1px", "'-=9px' on width (params)" );
  
  	$elem.css( "width", "-=-9px" );
  	assert.equal( $elem.css( "width" ), "10px", "'-=-9px' on width (params)" );
  
  	$elem.css( "width", "+=-9px" );
  	assert.equal( $elem.css( "width" ), "1px", "'+=-9px' on width (params)" );
  
  	$elem.css( { "paddingLeft": "+=4" } );
  	assert.equal( $elem.css( "paddingLeft" ), "5px", "'+=4' on paddingLeft (hash)" );
  
  	$elem.css( { "paddingLeft": "-=4" } );
  	assert.equal( $elem.css( "paddingLeft" ), "1px", "'-=4' on paddingLeft (hash)" );
  
  	$elem.css( { "paddingLeft": "+=4px" } );
  	assert.equal( $elem.css( "paddingLeft" ), "5px", "'+=4px' on paddingLeft (hash)" );
  
  	$elem.css( { "paddingLeft": "-=4px" } );
  	assert.equal( $elem.css( "paddingLeft" ), "1px", "'-=4px' on paddingLeft (hash)" );
  
  	$elem.css( { "padding-left": "+=4" } );
  	assert.equal( $elem.css( "paddingLeft" ), "5px", "'+=4' on padding-left (hash)" );
  
  	$elem.css( { "padding-left": "-=4" } );
  	assert.equal( $elem.css( "paddingLeft" ), "1px", "'-=4' on padding-left (hash)" );
  
  	$elem.css( { "padding-left": "+=4px" } );
  	assert.equal( $elem.css( "paddingLeft" ), "5px", "'+=4px' on padding-left (hash)" );
  
  	$elem.css( { "padding-left": "-=4px" } );
  	assert.equal( $elem.css( "paddingLeft" ), "1px", "'-=4px' on padding-left (hash)" );
  
  	$elem.css( "paddingLeft", "+=4" );
  	assert.equal( $elem.css( "paddingLeft" ), "5px", "'+=4' on paddingLeft (params)" );
  
  	$elem.css( "paddingLeft", "-=4" );
  	assert.equal( $elem.css( "paddingLeft" ), "1px", "'-=4' on paddingLeft (params)" );
  
  	$elem.css( "padding-left", "+=4px" );
  	assert.equal( $elem.css( "paddingLeft" ), "5px", "'+=4px' on padding-left (params)" );
  
  	$elem.css( "padding-left", "-=4px" );
  	assert.equal( $elem.css( "paddingLeft" ), "1px", "'-=4px' on padding-left (params)" );
  
  	$elem.css( { "opacity": "-=0.5" } );
  	assert.equal( $elem.css( "opacity" ), "0.5", "'-=0.5' on opacity (hash)" );
  
  	$elem.css( { "opacity": "+=0.5" } );
  	assert.equal( $elem.css( "opacity" ), "1", "'+=0.5' on opacity (hash)" );
  
  	$elem.css( "opacity", "-=0.5" );
  	assert.equal( $elem.css( "opacity" ), "0.5", "'-=0.5' on opacity (params)" );
  
  	$elem.css( "opacity", "+=0.5" );
  	assert.equal( $elem.css( "opacity" ), "1", "'+=0.5' on opacity (params)" );
  } );
  
  QUnit.test( "css() non-px relative values (gh-1711)", function( assert ) {
  	assert.expect( 17 );
  
  	var cssCurrent,
  		units = {},
  		$child = jQuery( "#nothiddendivchild" ),
  		add = function( prop, val, unit ) {
  			var difference,
  				adjustment = ( val < 0 ? "-=" : "+=" ) + Math.abs( val ) + unit,
  				message = prop + ": " + adjustment,
  				cssOld = cssCurrent,
  				expected = cssOld + val * units[ prop ][ unit ];
  
  			// Apply change
  			$child.css( prop, adjustment );
  			cssCurrent = parseFloat( $child.css( prop ) );
  			message += " (actual " + round( cssCurrent, 2 ) + "px, expected " +
  				round( expected, 2 ) + "px)";
  
  			// Require a difference of no more than one pixel
  			difference = Math.abs( cssCurrent - expected );
  			assert.ok( difference <= 1, message );
  		},
  		getUnits = function( prop ) {
  			units[ prop ] = {
  				"px": 1,
  				"em": parseFloat( $child.css( prop, "100em" ).css( prop ) ) / 100,
  				"pt": parseFloat( $child.css( prop, "100pt" ).css( prop ) ) / 100,
  				"pc": parseFloat( $child.css( prop, "100pc" ).css( prop ) ) / 100,
  				"cm": parseFloat( $child.css( prop, "100cm" ).css( prop ) ) / 100,
  				"mm": parseFloat( $child.css( prop, "100mm" ).css( prop ) ) / 100,
  				"%": parseFloat( $child.css( prop, "500%"  ).css( prop ) ) / 500
  			};
  		},
  		round = function( num, fractionDigits ) {
  			var base = Math.pow( 10, fractionDigits );
  			return Math.round( num * base ) / base;
  		};
  
  	jQuery( "#nothiddendiv" ).css( { height: 1, padding: 0, width: 400 } );
  	$child.css( { height: 1, padding: 0 } );
  
  	getUnits( "width" );
  	cssCurrent = parseFloat( $child.css( "width", "50%" ).css( "width" ) );
  	add( "width",  25,    "%" );
  	add( "width", -50,    "%" );
  	add( "width",  10,   "em" );
  	add( "width",  10,   "pt" );
  	add( "width",  -2.3, "pt" );
  	add( "width",   5,   "pc" );
  	add( "width",  -5,   "em" );
  	add( "width",  +2,   "cm" );
  	add( "width", -15,   "mm" );
  	add( "width",  21,   "px" );
  
  	getUnits( "lineHeight" );
  	cssCurrent = parseFloat( $child.css( "lineHeight", "1em" ).css( "lineHeight" ) );
  	add( "lineHeight",  50,  "%" );
  	add( "lineHeight",   2, "em" );
  	add( "lineHeight", -10, "px" );
  	add( "lineHeight",  20, "pt" );
  	add( "lineHeight",  30, "pc" );
  	add( "lineHeight",   1, "cm" );
  	add( "lineHeight", -44, "mm" );
  } );
  
  QUnit.test( "css() mismatched relative values with bounded styles (gh-2144)", function( assert ) {
  	assert.expect( 1 );
  
  	var right,
  		$container = jQuery( "<div/>" )
  			.css( { position: "absolute", width: "400px", fontSize: "4px" } )
  			.appendTo( "#qunit-fixture" ),
  		$el = jQuery( "<div/>" )
  			.css( { position: "absolute", left: "50%", right: "50%" } )
  			.appendTo( $container );
  
  	$el.css( "right", "-=25em" );
  	assert.equal( Math.round( parseFloat( $el.css( "right" ) ) ), 100,
  		"Constraints do not interfere with unit conversion" );
  } );
  
  QUnit.test( "css(String, Object)", function( assert ) {
  	assert.expect( 19 );
  	var j, div, display, ret, success;
  
  	jQuery( "#floatTest" ).css( "float", "left" );
  	assert.equal( jQuery( "#floatTest" ).css( "float" ), "left", "Modified CSS float using \"float\": Assert float is left" );
  	jQuery( "#floatTest" ).css( "font-size", "20px" );
  	assert.equal( jQuery( "#floatTest" ).css( "font-size" ), "20px", "Modified CSS font-size: Assert font-size is 20px" );
  
  	jQuery.each( "0,0.25,0.5,0.75,1".split( "," ), function( i, n ) {
  		jQuery( "#foo" ).css( "opacity", n );
  		assert.equal( jQuery( "#foo" ).css( "opacity" ), parseFloat( n ), "Assert opacity is " + parseFloat( n ) + " as a String" );
  		jQuery( "#foo" ).css( "opacity", parseFloat( n ) );
  		assert.equal( jQuery( "#foo" ).css( "opacity" ), parseFloat( n ), "Assert opacity is " + parseFloat( n ) + " as a Number" );
  	} );
  	jQuery( "#foo" ).css( "opacity", "" );
  	assert.equal( jQuery( "#foo" ).css( "opacity" ), "1", "Assert opacity is 1 when set to an empty String" );
  
  	// using contents will get comments regular, text, and comment nodes
  	j = jQuery( "#nonnodes" ).contents();
  	j.css( "overflow", "visible" );
  	assert.equal( j.css( "overflow" ), "visible", "Check node,textnode,comment css works" );
  	assert.equal( jQuery( "#t2037 .hidden" ).css( "display" ), "none", "Make sure browser thinks it is hidden" );
  
  	div = jQuery( "#nothiddendiv" );
  	display = div.css( "display" );
  	ret = div.css( "display", undefined );
  
  	assert.equal( ret, div, "Make sure setting undefined returns the original set." );
  	assert.equal( div.css( "display" ), display, "Make sure that the display wasn't changed." );
  
  	success = true;
  	try {
  		jQuery( "#foo" ).css( "backgroundColor", "rgba(0, 0, 0, 0.1)" );
  	}
  	catch ( e ) {
  		success = false;
  	}
  	assert.ok( success, "Setting RGBA values does not throw Error (#5509)" );
  
  	jQuery( "#foo" ).css( "font", "7px/21px sans-serif" );
  	assert.strictEqual( jQuery( "#foo" ).css( "line-height" ), "21px",
  		"Set font shorthand property (#14759)" );
  } );
  
  QUnit.test( "css(String, Object) with negative values", function( assert ) {
  	assert.expect( 4 );
  
  	jQuery( "#nothiddendiv" ).css( "margin-top", "-10px" );
  	jQuery( "#nothiddendiv" ).css( "margin-left", "-10px" );
  	assert.equal( jQuery( "#nothiddendiv" ).css( "margin-top" ), "-10px", "Ensure negative top margins work." );
  	assert.equal( jQuery( "#nothiddendiv" ).css( "margin-left" ), "-10px", "Ensure negative left margins work." );
  
  	jQuery( "#nothiddendiv" ).css( "position", "absolute" );
  	jQuery( "#nothiddendiv" ).css( "top", "-20px" );
  	jQuery( "#nothiddendiv" ).css( "left", "-20px" );
  	assert.equal( jQuery( "#nothiddendiv" ).css( "top" ), "-20px", "Ensure negative top values work." );
  	assert.equal( jQuery( "#nothiddendiv" ).css( "left" ), "-20px", "Ensure negative left values work." );
  } );
  
  QUnit.test( "css(Array)", function( assert ) {
  	assert.expect( 2 );
  
  	var expectedMany = {
  			"overflow": "visible",
  			"width": "16px"
  		},
  		expectedSingle = {
  			"width": "16px"
  		},
  		elem = jQuery( "<div></div>" ).appendTo( "#qunit-fixture" );
  
  	assert.deepEqual( elem.css( expectedMany ).css( [ "overflow", "width" ] ), expectedMany, "Getting multiple element array" );
  	assert.deepEqual( elem.css( expectedSingle ).css( [ "width" ] ), expectedSingle, "Getting single element array" );
  } );
  
  QUnit.test( "css(String, Function)", function( assert ) {
  	assert.expect( 3 );
  
  	var index,
  		sizes = [ "10px", "20px", "30px" ];
  
  	jQuery( "<div id='cssFunctionTest'><div class='cssFunction'></div>" +
  				"<div class='cssFunction'></div>" +
  				"<div class='cssFunction'></div></div>" )
  		.appendTo( "body" );
  
  	index = 0;
  
  	jQuery( "#cssFunctionTest div" ).css( "font-size", function() {
  		var size = sizes[ index ];
  		index++;
  		return size;
  	} );
  
  	index = 0;
  
  	jQuery( "#cssFunctionTest div" ).each( function() {
  		var computedSize = jQuery( this ).css( "font-size" ),
  			expectedSize = sizes[ index ];
  		assert.equal( computedSize, expectedSize, "Div #" + index + " should be " + expectedSize );
  		index++;
  	} );
  
  	jQuery( "#cssFunctionTest" ).remove();
  } );
  
  QUnit.test( "css(String, Function) with incoming value", function( assert ) {
  	assert.expect( 3 );
  
  	var index,
  		sizes = [ "10px", "20px", "30px" ];
  
  	jQuery( "<div id='cssFunctionTest'><div class='cssFunction'></div>" +
  				"<div class='cssFunction'></div>" +
  				"<div class='cssFunction'></div></div>" )
  		.appendTo( "body" );
  
  	index = 0;
  
  	jQuery( "#cssFunctionTest div" ).css( "font-size", function() {
  		var size = sizes[ index ];
  		index++;
  		return size;
  	} );
  
  	index = 0;
  
  	jQuery( "#cssFunctionTest div" ).css( "font-size", function( i, computedSize ) {
  		var expectedSize = sizes[ index ];
  		assert.equal( computedSize, expectedSize, "Div #" + index + " should be " + expectedSize );
  		index++;
  		return computedSize;
  	} );
  
  	jQuery( "#cssFunctionTest" ).remove();
  } );
  
  QUnit.test( "css(Object) where values are Functions", function( assert ) {
  	assert.expect( 3 );
  
  	var index,
  		sizes = [ "10px", "20px", "30px" ];
  
  	jQuery( "<div id='cssFunctionTest'><div class='cssFunction'></div>" +
  				"<div class='cssFunction'></div>" +
  				"<div class='cssFunction'></div></div>" )
  		.appendTo( "body" );
  
  	index = 0;
  
  	jQuery( "#cssFunctionTest div" ).css( { "fontSize": function() {
  		var size = sizes[ index ];
  		index++;
  		return size;
  	} } );
  
  	index = 0;
  
  	jQuery( "#cssFunctionTest div" ).each( function() {
  		var computedSize = jQuery( this ).css( "font-size" ),
  			expectedSize = sizes[ index ];
  		assert.equal( computedSize, expectedSize, "Div #" + index + " should be " + expectedSize );
  		index++;
  	} );
  
  	jQuery( "#cssFunctionTest" ).remove();
  } );
  
  QUnit.test( "css(Object) where values are Functions with incoming values", function( assert ) {
  	assert.expect( 3 );
  
  	var index,
  		sizes = [ "10px", "20px", "30px" ];
  
  	jQuery( "<div id='cssFunctionTest'><div class='cssFunction'></div>" +
  				"<div class='cssFunction'></div>" +
  				"<div class='cssFunction'></div></div>" )
  		.appendTo( "body" );
  
  	index = 0;
  
  	jQuery( "#cssFunctionTest div" ).css( { "fontSize": function() {
  		var size = sizes[ index ];
  		index++;
  		return size;
  	} } );
  
  	index = 0;
  
  	jQuery( "#cssFunctionTest div" ).css( { "font-size": function( i, computedSize ) {
  		var expectedSize = sizes[ index ];
  		assert.equal( computedSize, expectedSize, "Div #" + index + " should be " + expectedSize );
  		index++;
  		return computedSize;
  	} } );
  
  	jQuery( "#cssFunctionTest" ).remove();
  } );
  
  // .show(), .hide(), can be excluded from the build
  if ( jQuery.fn.show && jQuery.fn.hide ) {
  
  QUnit.test( "show()", function( assert ) {
  
  	assert.expect( 18 );
  
  	var hiddendiv, div, pass, test;
  		hiddendiv = jQuery( "div.hidden" );
  
  	assert.equal( jQuery.css( hiddendiv[ 0 ], "display" ), "none", "hiddendiv is display: none" );
  
  	hiddendiv.css( "display", "block" );
  	assert.equal( jQuery.css( hiddendiv[ 0 ], "display" ), "block", "hiddendiv is display: block" );
  
  	hiddendiv.show();
  	assert.equal( jQuery.css( hiddendiv[ 0 ], "display" ), "block", "hiddendiv is display: block" );
  
  	hiddendiv.css( "display", "" );
  
  	pass = true;
  	div = jQuery( "#qunit-fixture div" );
  	div.show().each( function() {
  		if ( this.style.display === "none" ) {
  			pass = false;
  		}
  	} );
  	assert.ok( pass, "Show" );
  
  	jQuery(
  		"<div id='show-tests'>" +
  		"<div><p><a href='#'></a></p><code></code><pre></pre><span></span></div>" +
  		"<table><thead><tr><th></th></tr></thead><tbody><tr><td></td></tr></tbody></table>" +
  		"<ul><li></li></ul></div>"
  	).appendTo( "#qunit-fixture" ).find( "*" ).css( "display", "none" );
  
  	test = {
  		"div": "block",
  		"p": "block",
  		"a": "inline",
  		"code": "inline",
  		"pre": "block",
  		"span": "inline",
  		"table": "table",
  		"thead": "table-header-group",
  		"tbody": "table-row-group",
  		"tr": "table-row",
  		"th": "table-cell",
  		"td": "table-cell",
  		"ul": "block",
  		"li": "list-item"
  	};
  
  	jQuery.each( test, function( selector, expected ) {
  		var elem = jQuery( selector, "#show-tests" ).show();
  		assert.equal( elem.css( "display" ), expected, "Show using correct display type for " + selector );
  	} );
  
  	// Make sure that showing or hiding a text node doesn't cause an error
  	jQuery( "<div>test</div> text <span>test</span>" ).show().remove();
  	jQuery( "<div>test</div> text <span>test</span>" ).hide().remove();
  } );
  
  QUnit.test( "show/hide detached nodes", function( assert ) {
  	assert.expect( 19 );
  
  	var div, span, tr;
  
  	div = jQuery( "<div>" ).hide();
  	assert.equal( div.css( "display" ), "none", "hide() updates inline style of a detached div" );
  	div.appendTo( "#qunit-fixture" );
  	assert.equal( div.css( "display" ), "none",
  		"A hidden-while-detached div is hidden after attachment" );
  	div.show();
  	assert.equal( div.css( "display" ), "block",
  		"A hidden-while-detached div can be shown after attachment" );
  
  	div = jQuery( "<div class='hidden'>" );
  	div.show().appendTo( "#qunit-fixture" );
  	assert.equal( div.css( "display" ), "none",
  		"A shown-while-detached div can be hidden by the CSS cascade" );
  
  	div = jQuery( "<div><div class='hidden'></div></div>" ).children( "div" );
  	div.show().appendTo( "#qunit-fixture" );
  	assert.equal( div.css( "display" ), "none",
  		"A shown-while-detached div inside a visible div can be hidden by the CSS cascade" );
  
  	span = jQuery( "<span class='hidden'/>" );
  	span.show().appendTo( "#qunit-fixture" );
  	assert.equal( span.css( "display" ), "none",
  		"A shown-while-detached span can be hidden by the CSS cascade" );
  
  	div = jQuery( "div.hidden" );
  	div.detach().show();
  	assert.ok( !div[ 0 ].style.display,
  		"show() does not update inline style of a cascade-hidden-before-detach div" );
  	div.appendTo( "#qunit-fixture" );
  	assert.equal( div.css( "display" ), "none",
  		"A shown-while-detached cascade-hidden div is hidden after attachment" );
  	div.remove();
  
  	span = jQuery( "<span class='hidden'/>" );
  	span.appendTo( "#qunit-fixture" ).detach().show().appendTo( "#qunit-fixture" );
  	assert.equal( span.css( "display" ), "none",
  		"A shown-while-detached cascade-hidden span is hidden after attachment" );
  	span.remove();
  
  	div = jQuery( document.createElement( "div" ) );
  	div.show().appendTo( "#qunit-fixture" );
  	assert.ok( !div[ 0 ].style.display, "A shown-while-detached div has no inline style" );
  	assert.equal( div.css( "display" ), "block",
  		"A shown-while-detached div has default display after attachment" );
  	div.remove();
  
  	div = jQuery( "<div style='display: none'>" );
  	div.show();
  	assert.equal( div[ 0 ].style.display, "",
  		"show() updates inline style of a detached inline-hidden div" );
  	div.appendTo( "#qunit-fixture" );
  	assert.equal( div.css( "display" ), "block",
  		"A shown-while-detached inline-hidden div has default display after attachment" );
  
  	div = jQuery( "<div><div style='display: none'></div></div>" ).children( "div" );
  	div.show().appendTo( "#qunit-fixture" );
  	assert.equal( div.css( "display" ), "block",
  		"A shown-while-detached inline-hidden div inside a visible div has default display " +
  		"after attachment" );
  
  	span = jQuery( "<span style='display: none'/>" );
  	span.show();
  	assert.equal( span[ 0 ].style.display, "",
  		"show() updates inline style of a detached inline-hidden span" );
  	span.appendTo( "#qunit-fixture" );
  	assert.equal( span.css( "display" ), "inline",
  		"A shown-while-detached inline-hidden span has default display after attachment" );
  
  	div = jQuery( "<div style='display: inline'/>" );
  	div.show().appendTo( "#qunit-fixture" );
  	assert.equal( div.css( "display" ), "inline",
  		"show() does not update inline style of a detached inline-visible div" );
  	div.remove();
  
  	tr = jQuery( "<tr/>" );
  	jQuery( "#table" ).append( tr );
  	tr.detach().hide().show();
  
  	assert.ok( !tr[ 0 ].style.display, "Not-hidden detached tr elements have no inline style" );
  	tr.remove();
  
  	span = jQuery( "<span/>" ).hide().show();
  	assert.ok( !span[ 0 ].style.display, "Not-hidden detached span elements have no inline style" );
  	span.remove();
  } );
  
  QUnit[ document.body.attachShadow ? "test" : "skip" ]( "show/hide shadow child nodes", function( assert ) {
  	assert.expect( 28 );
  	jQuery( "<div id='shadowHost'></div>" ).appendTo( "#qunit-fixture" );
  	var shadowHost = document.querySelector( "#shadowHost" );
  	var shadowRoot = shadowHost.attachShadow( { mode: "open" } );
  	shadowRoot.innerHTML = "" +
  		"<style>.hidden{display: none;}</style>" +
  		"<div class='hidden' id='shadowdiv'>" +
  		"	<p class='hidden' id='shadowp'>" +
  		"		<a href='#' class='hidden' id='shadowa'></a>" +
  		"	</p>" +
  		"	<code class='hidden' id='shadowcode'></code>" +
  		"	<pre class='hidden' id='shadowpre'></pre>" +
  		"	<span class='hidden' id='shadowspan'></span>" +
  		"</div>" +
  		"<table class='hidden' id='shadowtable'>" +
  		"	<thead class='hidden' id='shadowthead'>" +
  		"		<tr class='hidden' id='shadowtr'>" +
  		"			<th class='hidden' id='shadowth'></th>" +
  		"		</tr>" +
  		"	</thead>" +
  		"	<tbody class='hidden' id='shadowtbody'>" +
  		"		<tr class='hidden'>" +
  		"			<td class='hidden' id='shadowtd'></td>" +
  		"		</tr>" +
  		"	</tbody>" +
  		"</table>" +
  		"<ul class='hidden' id='shadowul'>" +
  		"	<li class='hidden' id='shadowli'></li>" +
  		"</ul>";
  
  	var test = {
  		"div": "block",
  		"p": "block",
  		"a": "inline",
  		"code": "inline",
  		"pre": "block",
  		"span": "inline",
  		"table": "table",
  		"thead": "table-header-group",
  		"tbody": "table-row-group",
  		"tr": "table-row",
  		"th": "table-cell",
  		"td": "table-cell",
  		"ul": "block",
  		"li": "list-item"
  	};
  
  	jQuery.each( test, function( selector, expected ) {
  		var shadowChild = shadowRoot.querySelector( "#shadow" + selector );
  		var $shadowChild = jQuery( shadowChild );
  		assert.strictEqual( $shadowChild.css( "display" ), "none", "is hidden" );
  		$shadowChild.show();
  		assert.strictEqual( $shadowChild.css( "display" ), expected, "Show using correct display type for " + selector );
  	} );
  } );
  
  QUnit.test( "hide hidden elements (bug #7141)", function( assert ) {
  	assert.expect( 3 );
  
  	var div = jQuery( "<div style='display:none'></div>" ).appendTo( "#qunit-fixture" );
  	assert.equal( div.css( "display" ), "none", "Element is hidden by default" );
  	div.hide();
  	assert.ok( !jQuery._data( div, "olddisplay" ), "olddisplay is undefined after hiding an already-hidden element" );
  	div.show();
  	assert.equal( div.css( "display" ), "block", "Show a double-hidden element" );
  
  	div.remove();
  } );
  
  QUnit.test( "show() after hide() should always set display to initial value (#14750)", function( assert ) {
  	assert.expect( 1 );
  
  	var div = jQuery( "<div />" ),
  		fixture = jQuery( "#qunit-fixture" );
  
  	fixture.append( div );
  
  	div.css( "display", "inline" ).hide().show().css( "display", "list-item" ).hide().show();
  	assert.equal( div.css( "display" ), "list-item", "should get last set display value" );
  } );
  
  QUnit.test( "show/hide 3.0, default display", function( assert ) {
  
  	assert.expect( 36 );
  
  	var i,
  		$elems = jQuery( "<div/>" )
  			.appendTo( "#qunit-fixture" )
  			.html( "<div data-expected-display='block'/>" +
  				"<span data-expected-display='inline'/>" +
  				"<ul><li data-expected-display='list-item'/></ul>" )
  			.find( "[data-expected-display]" );
  
  	$elems.each( function() {
  		var $elem = jQuery( this ),
  			name = this.nodeName,
  			expected = this.getAttribute( "data-expected-display" ),
  			sequence = [];
  
  		if ( this.className ) {
  			name += "." + this.className;
  		}
  		if ( this.getAttribute( "style" ) ) {
  			name += "[style='" + this.getAttribute( "style" ) + "']";
  		}
  		name += " ";
  
  		for ( i = 0; i < 3; i++ ) {
  			sequence.push( ".show()" );
  			$elem.show();
  			assert.equal( $elem.css( "display" ), expected,
  				name + sequence.join( "" ) + " computed" );
  			assert.equal( this.style.display, "", name + sequence.join( "" ) + " inline" );
  
  			sequence.push( ".hide()" );
  			$elem.hide();
  			assert.equal( $elem.css( "display" ), "none",
  				name + sequence.join( "" ) + " computed" );
  			assert.equal( this.style.display, "none", name + sequence.join( "" ) + " inline" );
  		}
  	} );
  } );
  
  QUnit.test( "show/hide 3.0, default body display", function( assert ) {
  
  	assert.expect( 2 );
  
  	var hideBody = supportjQuery( "<style>body{display:none}</style>" ).appendTo( document.head ),
  		body = jQuery( document.body );
  
  	assert.equal( body.css( "display" ), "none", "Correct initial display" );
  
  	body.show();
  
  	assert.equal( body.css( "display" ), "block", "Correct display after .show()" );
  
  	hideBody.remove();
  } );
  
  QUnit.test( "show/hide 3.0, cascade display", function( assert ) {
  
  	assert.expect( 36 );
  
  	var i,
  		$elems = jQuery( "<div/>" )
  			.appendTo( "#qunit-fixture" )
  			.html( "<span class='block'/><div class='inline'/><div class='list-item'/>" )
  			.children();
  
  	$elems.each( function() {
  		var $elem = jQuery( this ),
  			name = this.nodeName,
  			sequence = [];
  
  		if ( this.className ) {
  			name += "." + this.className;
  		}
  		if ( this.getAttribute( "style" ) ) {
  			name += "[style='" + this.getAttribute( "style" ) + "']";
  		}
  		name += " ";
  
  		for ( i = 0; i < 3; i++ ) {
  			sequence.push( ".show()" );
  			$elem.show();
  			assert.equal( $elem.css( "display" ), this.className,
  				name + sequence.join( "" ) + " computed" );
  			assert.equal( this.style.display, "", name + sequence.join( "" ) + " inline" );
  
  			sequence.push( ".hide()" );
  			$elem.hide();
  			assert.equal( $elem.css( "display" ), "none",
  				name + sequence.join( "" ) + " computed" );
  			assert.equal( this.style.display, "none", name + sequence.join( "" ) + " inline" );
  		}
  	} );
  } );
  
  QUnit.test( "show/hide 3.0, inline display", function( assert ) {
  
  	assert.expect( 96 );
  
  	var i,
  		$elems = jQuery( "<div/>" )
  			.appendTo( "#qunit-fixture" )
  			.html( "<span data-expected-display='block' style='display:block'/>" +
  				"<span class='list-item' data-expected-display='block' style='display:block'/>" +
  				"<div data-expected-display='inline' style='display:inline'/>" +
  				"<div class='list-item' data-expected-display='inline' style='display:inline'/>" +
  				"<ul>" +
  					"<li data-expected-display='block' style='display:block'/>" +
  					"<li class='inline' data-expected-display='block' style='display:block'/>" +
  					"<li data-expected-display='inline' style='display:inline'/>" +
  					"<li class='block' data-expected-display='inline' style='display:inline'/>" +
  				"</ul>" )
  			.find( "[data-expected-display]" );
  
  	$elems.each( function() {
  		var $elem = jQuery( this ),
  			name = this.nodeName,
  			expected = this.getAttribute( "data-expected-display" ),
  			sequence = [];
  
  		if ( this.className ) {
  			name += "." + this.className;
  		}
  		if ( this.getAttribute( "style" ) ) {
  			name += "[style='" + this.getAttribute( "style" ) + "']";
  		}
  		name += " ";
  
  		for ( i = 0; i < 3; i++ ) {
  			sequence.push( ".show()" );
  			$elem.show();
  			assert.equal( $elem.css( "display" ), expected,
  				name + sequence.join( "" ) + " computed" );
  			assert.equal( this.style.display, expected, name + sequence.join( "" ) + " inline" );
  
  			sequence.push( ".hide()" );
  			$elem.hide();
  			assert.equal( $elem.css( "display" ), "none",
  				name + sequence.join( "" ) + " computed" );
  			assert.equal( this.style.display, "none", name + sequence.join( "" ) + " inline" );
  		}
  	} );
  } );
  
  QUnit.test( "show/hide 3.0, cascade hidden", function( assert ) {
  
  	assert.expect( 72 );
  
  	var i,
  		$elems = jQuery( "<div/>" )
  			.appendTo( "#qunit-fixture" )
  			.html( "<div class='hidden' data-expected-display='block'/>" +
  				"<div class='hidden' data-expected-display='block' style='display:none'/>" +
  				"<span class='hidden' data-expected-display='inline'/>" +
  				"<span class='hidden' data-expected-display='inline' style='display:none'/>" +
  				"<ul>" +
  					"<li class='hidden' data-expected-display='list-item'/>" +
  					"<li class='hidden' data-expected-display='list-item' style='display:none'/>" +
  				"</ul>" )
  			.find( "[data-expected-display]" );
  
  	$elems.each( function() {
  		var $elem = jQuery( this ),
  			name = this.nodeName,
  			expected = this.getAttribute( "data-expected-display" ),
  			sequence = [];
  
  		if ( this.className ) {
  			name += "." + this.className;
  		}
  		if ( this.getAttribute( "style" ) ) {
  			name += "[style='" + this.getAttribute( "style" ) + "']";
  		}
  		name += " ";
  
  		for ( i = 0; i < 3; i++ ) {
  			sequence.push( ".hide()" );
  			$elem.hide();
  			assert.equal( $elem.css( "display" ), "none",
  				name + sequence.join( "" ) + " computed" );
  			assert.equal( this.style.display, "none", name + sequence.join( "" ) + " inline" );
  
  			sequence.push( ".show()" );
  			$elem.show();
  			assert.equal( $elem.css( "display" ), expected,
  				name + sequence.join( "" ) + " computed" );
  			assert.equal( this.style.display, expected, name + sequence.join( "" ) + " inline" );
  		}
  	} );
  } );
  
  QUnit.test( "show/hide 3.0, inline hidden", function( assert ) {
  
  	assert.expect( 84 );
  
  	var i,
  		$elems = jQuery( "<div/>" )
  			.appendTo( "#qunit-fixture" )
  			.html( "<span data-expected-display='inline' style='display:none'/>" +
  				"<span class='list-item' data-expected-display='list-item' style='display:none'/>" +
  				"<div data-expected-display='block' style='display:none'/>" +
  				"<div class='list-item' data-expected-display='list-item' style='display:none'/>" +
  				"<ul>" +
  					"<li data-expected-display='list-item' style='display:none'/>" +
  					"<li class='block' data-expected-display='block' style='display:none'/>" +
  					"<li class='inline' data-expected-display='inline' style='display:none'/>" +
  				"</ul>" )
  			.find( "[data-expected-display]" );
  
  	$elems.each( function() {
  		var $elem = jQuery( this ),
  			name = this.nodeName,
  			expected = this.getAttribute( "data-expected-display" ),
  			sequence = [];
  
  		if ( this.className ) {
  			name += "." + this.className;
  		}
  		if ( this.getAttribute( "style" ) ) {
  			name += "[style='" + this.getAttribute( "style" ) + "']";
  		}
  		name += " ";
  
  		for ( i = 0; i < 3; i++ ) {
  			sequence.push( ".hide()" );
  			$elem.hide();
  			assert.equal( $elem.css( "display" ), "none",
  				name + sequence.join( "" ) + " computed" );
  			assert.equal( this.style.display, "none", name + sequence.join( "" ) + " inline" );
  
  			sequence.push( ".show()" );
  			$elem.show();
  			assert.equal( $elem.css( "display" ), expected,
  				name + sequence.join( "" ) + " computed" );
  			assert.equal( this.style.display, "", name + sequence.join( "" ) + " inline" );
  		}
  	} );
  } );
  
  }
  
  QUnit[ jQuery.find.compile && jQuery.fn.toggle ? "test" : "skip" ]( "toggle()", function( assert ) {
  	assert.expect( 9 );
  	var div, oldHide,
  		x = jQuery( "#foo" );
  
  	assert.ok( x.is( ":visible" ), "is visible" );
  	x.toggle();
  	assert.ok( x.is( ":hidden" ), "is hidden" );
  	x.toggle();
  	assert.ok( x.is( ":visible" ), "is visible again" );
  
  	x.toggle( true );
  	assert.ok( x.is( ":visible" ), "is visible" );
  	x.toggle( false );
  	assert.ok( x.is( ":hidden" ), "is hidden" );
  	x.toggle( true );
  	assert.ok( x.is( ":visible" ), "is visible again" );
  
  	div = jQuery( "<div style='display:none'><div></div></div>" ).appendTo( "#qunit-fixture" );
  	x = div.find( "div" );
  	assert.strictEqual( x.toggle().css( "display" ), "none", "is hidden" );
  	assert.strictEqual( x.toggle().css( "display" ), "block", "is visible" );
  
  	// Ensure hide() is called when toggled (#12148)
  	oldHide = jQuery.fn.hide;
  	jQuery.fn.hide = function() {
  		assert.ok( true, name + " method called on toggle" );
  		return oldHide.apply( this, arguments );
  	};
  	x.toggle( name === "show" );
  	jQuery.fn.hide = oldHide;
  } );
  
  QUnit[ jQuery.find.compile && jQuery.fn.toggle ? "test" : "skip" ]( "detached toggle()", function( assert ) {
  	assert.expect( 6 );
  	var detached = jQuery( "<p><a/><p>" ).find( "*" ).addBack(),
  		hiddenDetached = jQuery( "<p><a/></p>" ).find( "*" ).addBack().css( "display", "none" ),
  		cascadeHiddenDetached = jQuery( "<p><a/></p>" ).find( "*" ).addBack().addClass( "hidden" );
  
  	detached.toggle();
  	detached.appendTo( "#qunit-fixture" );
  	assert.equal( detached[ 0 ].style.display, "none", "detached element" );
  	assert.equal( detached[ 1 ].style.display, "none", "element in detached tree" );
  
  	hiddenDetached.toggle();
  	hiddenDetached.appendTo( "#qunit-fixture" );
  	assert.equal( hiddenDetached[ 0 ].style.display, "", "detached, hidden element" );
  	assert.equal( hiddenDetached[ 1 ].style.display, "", "hidden element in detached tree" );
  
  	cascadeHiddenDetached.toggle();
  	cascadeHiddenDetached.appendTo( "#qunit-fixture" );
  	assert.equal( cascadeHiddenDetached[ 0 ].style.display, "none",
  		"detached, cascade-hidden element" );
  	assert.equal( cascadeHiddenDetached[ 1 ].style.display, "none",
  		"cascade-hidden element in detached tree" );
  } );
  
  QUnit[ jQuery.find.compile && jQuery.fn.toggle && document.body.attachShadow ? "test" : "skip" ]( "shadow toggle()", function( assert ) {
  	assert.expect( 4 );
  	jQuery( "<div id='shadowHost'></div>" ).appendTo( "#qunit-fixture" );
  	var shadowHost = document.querySelector( "#shadowHost" );
  	var shadowRoot = shadowHost.attachShadow( { mode: "open" } );
  	shadowRoot.innerHTML = "" +
  		"<style>.hidden{display: none;}</style>" +
  		"<div id='shadowHiddenChild' class='hidden'></div>" +
  		"<div id='shadowChild'></div>";
  	var shadowChild = shadowRoot.querySelector( "#shadowChild" );
  	var shadowHiddenChild = shadowRoot.querySelector( "#shadowHiddenChild" );
  
  	var $shadowChild = jQuery( shadowChild );
  	assert.strictEqual( $shadowChild.css( "display" ), "block", "is visible" );
  	$shadowChild.toggle();
  	assert.strictEqual( $shadowChild.css( "display" ), "none", "is hidden" );
  
  	$shadowChild = jQuery( shadowHiddenChild );
  	assert.strictEqual( $shadowChild.css( "display" ), "none", "is hidden" );
  	$shadowChild.toggle();
  	assert.strictEqual( $shadowChild.css( "display" ), "block", "is visible" );
  } );
  
  QUnit.test( "jQuery.css(elem, 'height') doesn't clear radio buttons (bug #1095)", function( assert ) {
  	assert.expect( 4 );
  
  	var $checkedtest = jQuery( "#checkedtest" );
  	jQuery.css( $checkedtest[ 0 ], "height" );
  
  	assert.ok( jQuery( "input[type='radio']", $checkedtest ).first().attr( "checked" ), "Check first radio still checked." );
  	assert.ok( !jQuery( "input[type='radio']", $checkedtest ).last().attr( "checked" ), "Check last radio still NOT checked." );
  	assert.ok( jQuery( "input[type='checkbox']", $checkedtest ).first().attr( "checked" ), "Check first checkbox still checked." );
  	assert.ok( !jQuery( "input[type='checkbox']", $checkedtest ).last().attr( "checked" ), "Check last checkbox still NOT checked." );
  } );
  
  QUnit.test( "internal ref to elem.runtimeStyle (bug #7608)", function( assert ) {
  	assert.expect( 1 );
  	var result = true;
  
  	try {
  		jQuery( "#foo" ).css( { "width": "0%" } ).css( "width" );
  	} catch ( e ) {
  		result = false;
  	}
  
  	assert.ok( result, "elem.runtimeStyle does not throw exception" );
  } );
  
  QUnit.test( "computed margins (trac-3333; gh-2237)", function( assert ) {
  	assert.expect( 2 );
  
  	var $div = jQuery( "#foo" ),
  		$child = jQuery( "#en" );
  
  	$div.css( {
  		"width": "1px",
  		"marginRight": 0
  	} );
  	assert.equal( $div.css( "marginRight" ), "0px",
  		"marginRight correctly calculated with a width and display block" );
  
  	$div.css( {
  		position: "absolute",
  		top: 0,
  		left: 0,
  		width: "100px"
  	} );
  	$child.css( {
  		width: "50px",
  		margin: "auto"
  	} );
  	assert.equal( $child.css( "marginLeft" ), "25px", "auto margins are computed to pixels" );
  } );
  
  QUnit.test( "box model properties incorrectly returning % instead of px, see #10639 and #12088", function( assert ) {
  	assert.expect( 2 );
  
  	var container = jQuery( "<div/>" ).width( 400 ).appendTo( "#qunit-fixture" ),
  		el = jQuery( "<div/>" ).css( { "width": "50%", "marginRight": "50%" } ).appendTo( container ),
  		el2 = jQuery( "<div/>" ).css( { "width": "50%", "minWidth": "300px", "marginLeft": "25%" } ).appendTo( container );
  
  	assert.equal( el.css( "marginRight" ), "200px", "css('marginRight') returning % instead of px, see #10639" );
  	assert.equal( el2.css( "marginLeft" ), "100px", "css('marginLeft') returning incorrect pixel value, see #12088" );
  } );
  
  QUnit.test( "jQuery.cssProps behavior, (bug #8402)", function( assert ) {
  	assert.expect( 2 );
  
  	var div = jQuery( "<div>" ).appendTo( document.body ).css( {
  		"position": "absolute",
  		"top": 0,
  		"left": 10
  	} );
  	jQuery.cssProps.top = "left";
  	assert.equal( div.css( "top" ), "10px", "the fixed property is used when accessing the computed style" );
  	div.css( "top", "100px" );
  	assert.equal( div[ 0 ].style.left, "100px", "the fixed property is used when setting the style" );
  
  	// cleanup jQuery.cssProps
  	jQuery.cssProps.top = undefined;
  } );
  
  QUnit.test( "widows & orphans #8936", function( assert ) {
  
  	var $p = jQuery( "<p>" ).appendTo( "#qunit-fixture" );
  
  	assert.expect( 2 );
  
  	$p.css( {
  		"widows": 3,
  		"orphans": 3
  	} );
  
  	assert.equal( $p.css( "widows" ) || jQuery.style( $p[ 0 ], "widows" ), 3, "widows correctly set to 3" );
  	assert.equal( $p.css( "orphans" ) || jQuery.style( $p[ 0 ], "orphans" ), 3, "orphans correctly set to 3" );
  
  	$p.remove();
  } );
  
  QUnit.test( "can't get css for disconnected in IE<9, see #10254 and #8388", function( assert ) {
  	assert.expect( 2 );
  	var span, div;
  
  	span = jQuery( "<span/>" ).css( "background-image", "url(" + baseURL + "1x1.jpg)" );
  	assert.notEqual( span.css( "background-image" ), null, "can't get background-image in IE<9, see #10254" );
  
  	div = jQuery( "<div/>" ).css( "top", 10 );
  	assert.equal( div.css( "top" ), "10px", "can't get top in IE<9, see #8388" );
  } );
  
  QUnit.test( "Ensure styles are retrieving from parsed html on document fragments", function( assert ) {
  	assert.expect( 1 );
  
  	var $span = jQuery(
  		jQuery.parseHTML( "<span style=\"font-family: Cuprum,sans-serif; font-size: 14px; color: #999999;\">some text</span>" )
  	);
  
  	assert.equal( $span.css( "font-size" ), "14px", "Font-size retrievable on parsed HTML node" );
  } );
  
  QUnit.test( "can't get background-position in IE<9, see #10796", function( assert ) {
  	var div = jQuery( "<div/>" ).appendTo( "#qunit-fixture" ),
  		units = [
  			"0 0",
  			"12px 12px",
  			"13px 12em",
  			"12em 13px",
  			"12em center",
  			"+12em center",
  			"12.2em center",
  			"center center"
  		],
  		l = units.length,
  		i = 0;
  
  	assert.expect( l );
  
  	for ( ; i < l; i++ ) {
  		div.css( "background-position", units [ i ] );
  		assert.ok( div.css( "background-position" ), "can't get background-position in IE<9, see #10796" );
  	}
  } );
  
  if ( jQuery.fn.offset ) {
  	QUnit.test( "percentage properties for left and top should be transformed to pixels, see #9505", function( assert ) {
  		assert.expect( 2 );
  		var parent = jQuery( "<div style='position:relative;width:200px;height:200px;margin:0;padding:0;border-width:0'></div>" ).appendTo( "#qunit-fixture" ),
  			div = jQuery( "<div style='position: absolute; width: 20px; height: 20px; top:50%; left:50%'></div>" ).appendTo( parent );
  
  		assert.equal( div.css( "top" ), "100px", "position properties not transformed to pixels, see #9505" );
  		assert.equal( div.css( "left" ), "100px", "position properties not transformed to pixels, see #9505" );
  	} );
  }
  
  QUnit.test( "Do not append px (#9548, #12990, #2792)", function( assert ) {
  	assert.expect( 3 );
  
  	var $div = jQuery( "<div>" ).appendTo( "#qunit-fixture" );
  
  	$div.css( "fill-opacity", 1 );
  
  	assert.equal( $div.css( "fill-opacity" ), 1, "Do not append px to 'fill-opacity'" );
  
  	$div.css( "column-count", 1 );
  	if ( $div.css( "column-count" ) !== undefined ) {
  		assert.equal( $div.css( "column-count" ), 1, "Do not append px to 'column-count'" );
  	} else {
  		assert.ok( true, "No support for column-count CSS property" );
  	}
  
  	$div.css( "animation-iteration-count", 2 );
  	if ( $div.css( "animation-iteration-count" ) !== undefined ) {
  		// if $div.css( "animation-iteration-count" ) return "1",
  		// it actually return the default value of animation-iteration-count
  		assert.equal( $div.css( "animation-iteration-count" ), 2, "Do not append px to 'animation-iteration-count'" );
  	} else {
  		assert.ok( true, "No support for animation-iteration-count CSS property" );
  	}
  } );
  
  
  QUnit[
  	jQuery( "<div/>" )[ 0 ].style.gridArea === "" ?
  	"test" :
  	"skip"
  ]( "Do not append px to CSS Grid-related properties (gh-4007)", function( assert ) {
  	assert.expect( 12 );
  
  	var prop, value, subProp, subValue, $div,
  		gridProps = {
  			"grid-area": {
  				"grid-row-start": "2",
  				"grid-row-end": "auto",
  				"grid-column-start": "auto",
  				"grid-column-end": "auto"
  			},
  			"grid-column": {
  				"grid-column-start": "2",
  				"grid-column-end": "auto"
  			},
  			"grid-column-end": true,
  			"grid-column-start": true,
  			"grid-row": {
  				"grid-row-start": "2",
  				"grid-row-end": "auto"
  			},
  			"grid-row-end": true,
  			"grid-row-start": true
  		};
  
  	for ( prop in gridProps ) {
  		$div = jQuery( "<div/>" ).appendTo( "#qunit-fixture" );
  		$div.css( prop, 2 );
  
  		value = gridProps[ prop ];
  
  		if ( typeof value === "object" ) {
  			for ( subProp in value ) {
  				subValue = value[ subProp ];
  				assert.equal( $div.css( subProp ), subValue,
  					"Do not append px to '" + prop + "' (retrieved " + subProp + ")" );
  			}
  		} else {
  			assert.equal( $div.css( prop ), "2", "Do not append px to '" + prop + "'" );
  		}
  
  		$div.remove();
  	}
  } );
  
  QUnit.test( "css('width') and css('height') should respect box-sizing, see #11004", function( assert ) {
  	assert.expect( 4 );
  
  	var el_dis = jQuery( "<div style='width:300px;height:300px;margin:2px;padding:2px;box-sizing:border-box;'>test</div>" ),
  		el = el_dis.clone().appendTo( "#qunit-fixture" );
  
  	assert.equal( el.css( "width" ), el.css( "width", el.css( "width" ) ).css( "width" ), "css('width') is not respecting box-sizing, see #11004" );
  	assert.equal( el_dis.css( "width" ), el_dis.css( "width", el_dis.css( "width" ) ).css( "width" ), "css('width') is not respecting box-sizing for disconnected element, see #11004" );
  	assert.equal( el.css( "height" ), el.css( "height", el.css( "height" ) ).css( "height" ), "css('height') is not respecting box-sizing, see #11004" );
  	assert.equal( el_dis.css( "height" ), el_dis.css( "height", el_dis.css( "height" ) ).css( "height" ), "css('height') is not respecting box-sizing for disconnected element, see #11004" );
  } );
  
  testIframe(
  	"css('width') should work correctly before document ready (#14084)",
  	"css/cssWidthBeforeDocReady.html",
  	function( assert, jQuery, window, document, cssWidthBeforeDocReady ) {
  		assert.expect( 1 );
  		assert.strictEqual( cssWidthBeforeDocReady, "100px", "elem.css('width') works correctly before document ready" );
  	}
  );
  
  testIframe(
  	"css('width') should work correctly with browser zooming",
  	"css/cssWidthBrowserZoom.html",
  	function( assert, jQuery, window, document, widthBeforeSet, widthAfterSet ) {
  		assert.expect( 2 );
  		assert.strictEqual( widthBeforeSet, "100px", "elem.css('width') works correctly with browser zoom" );
  		assert.strictEqual( widthAfterSet, "100px", "elem.css('width', val) works correctly with browser zoom" );
  	}
  );
  
  ( function() {
  	var supportsFractionalGBCR,
  		qunitFixture = document.getElementById( "qunit-fixture" ),
  		div = document.createElement( "div" );
  	div.style.width = "3.3px";
  	qunitFixture.appendChild( div );
  	supportsFractionalGBCR = div.getBoundingClientRect().width.toFixed( 1 ) === "3.3";
  	qunitFixture.removeChild( div );
  
  	QUnit.test( "css('width') and css('height') should return fractional values for nodes in the document", function( assert ) {
  		if ( !supportsFractionalGBCR ) {
  			assert.expect( 1 );
  			assert.ok( true, "This browser doesn't support fractional values in getBoundingClientRect()" );
  			return;
  		}
  
  		assert.expect( 2 );
  
  		var el = jQuery( "<div class='test-div'></div>" ).appendTo( "#qunit-fixture" );
  		jQuery( "<style>.test-div { width: 33.3px; height: 88.8px; }</style>" ).appendTo( "#qunit-fixture" );
  
  		assert.equal( Number( el.css( "width" ).replace( /px$/, "" ) ).toFixed( 1 ), "33.3",
  			"css('width') should return fractional values" );
  		assert.equal( Number( el.css( "height" ).replace( /px$/, "" ) ).toFixed( 1 ), "88.8",
  			"css('height') should return fractional values" );
  	} );
  
  	QUnit.test( "css('width') and css('height') should return fractional values for disconnected nodes", function( assert ) {
  		if ( !supportsFractionalGBCR ) {
  			assert.expect( 1 );
  			assert.ok( true, "This browser doesn't support fractional values in getBoundingClientRect()" );
  			return;
  		}
  
  		assert.expect( 2 );
  
  		var el = jQuery( "<div style='width: 33.3px; height: 88.8px;'></div>" );
  
  		assert.equal( Number( el.css( "width" ).replace( /px$/, "" ) ).toFixed( 1 ), "33.3",
  			"css('width') should return fractional values" );
  		assert.equal( Number( el.css( "height" ).replace( /px$/, "" ) ).toFixed( 1 ), "88.8",
  			"css('height') should return fractional values" );
  	} );
  } )();
  
  QUnit.test( "certain css values of 'normal' should be convertable to a number, see #8627", function( assert ) {
  	assert.expect( 3 );
  
  	var el = jQuery( "<div style='letter-spacing:normal;font-weight:normal;'>test</div>" ).appendTo( "#qunit-fixture" );
  
  	assert.ok( !isNaN( parseFloat( el.css( "letterSpacing" ) ) ), "css('letterSpacing') not convertable to number, see #8627" );
  	assert.ok( !isNaN( parseFloat( el.css( "fontWeight" ) ) ), "css('fontWeight') not convertable to number, see #8627" );
  	assert.equal( typeof el.css( "fontWeight" ), "string", ".css() returns a string" );
  } );
  
  // Support: IE 9 only
  // Only run this test in IE9
  if ( document.documentMode === 9 ) {
  	QUnit.test( ".css('filter') returns a string in IE9, see #12537", function( assert ) {
  		assert.expect( 1 );
  
  		assert.equal( jQuery( "<div style='-ms-filter:\"progid:DXImageTransform.Microsoft.gradient(startColorstr=#FFFFFF, endColorstr=#ECECEC)\";'></div>" ).css( "filter" ), "progid:DXImageTransform.Microsoft.gradient(startColorstr=#FFFFFF, endColorstr=#ECECEC)", "IE9 returns the correct value from css('filter')." );
  	} );
  }
  
  QUnit.test( "cssHooks - expand", function( assert ) {
  	assert.expect( 15 );
  	var result,
  		properties = {
  			margin: [ "marginTop", "marginRight", "marginBottom", "marginLeft" ],
  			borderWidth: [ "borderTopWidth", "borderRightWidth", "borderBottomWidth", "borderLeftWidth" ],
  			padding: [ "paddingTop", "paddingRight", "paddingBottom", "paddingLeft" ]
  		};
  
  	jQuery.each( properties, function( property, keys ) {
  		var hook = jQuery.cssHooks[ property ],
  			expected = {};
  		jQuery.each( keys, function( _, key ) {
  			expected[ key ] = 10;
  		} );
  		result = hook.expand( 10 );
  		assert.deepEqual( result, expected, property + " expands properly with a number" );
  
  		jQuery.each( keys, function( _, key ) {
  			expected[ key ] = "10px";
  		} );
  		result = hook.expand( "10px" );
  		assert.deepEqual( result, expected, property + " expands properly with '10px'" );
  
  		expected[ keys[ 1 ] ] = expected[ keys[ 3 ] ] = "20px";
  		result = hook.expand( "10px 20px" );
  		assert.deepEqual( result, expected, property + " expands properly with '10px 20px'" );
  
  		expected[ keys[ 2 ] ] = "30px";
  		result = hook.expand( "10px 20px 30px" );
  		assert.deepEqual( result, expected, property + " expands properly with '10px 20px 30px'" );
  
  		expected[ keys[ 3 ] ] = "40px";
  		result = hook.expand( "10px 20px 30px 40px" );
  		assert.deepEqual( result, expected, property + " expands properly with '10px 20px 30px 40px'" );
  
  	} );
  
  } );
  
  QUnit.test( "css opacity consistency across browsers (#12685)", function( assert ) {
  	assert.expect( 3 );
  
  	var el,
  		fixture = jQuery( "#qunit-fixture" );
  
  	// Append style element
  	jQuery( "<style>.opacity_t12685 { opacity: 0.1; }</style>" ).appendTo( fixture );
  
  	el = jQuery( "<div class='opacity_t12685'></div>" ).appendTo( fixture );
  
  	assert.equal( Math.round( el.css( "opacity" ) * 100 ), 10, "opacity from style sheet" );
  	el.css( "opacity", 0.3 );
  	assert.equal( Math.round( el.css( "opacity" ) * 100 ), 30, "override opacity" );
  	el.css( "opacity", "" );
  	assert.equal( Math.round( el.css( "opacity" ) * 100 ), 10, "remove opacity override" );
  } );
  
  QUnit[ jQuery.find.compile ? "test" : "skip" ]( ":visible/:hidden selectors", function( assert ) {
  	assert.expect( 17 );
  
  	var $div, $table, $a;
  
  	assert.ok( jQuery( "#nothiddendiv" ).is( ":visible" ), "Modifying CSS display: Assert element is visible" );
  	jQuery( "#nothiddendiv" ).css( { display: "none" } );
  	assert.ok( !jQuery( "#nothiddendiv" ).is( ":visible" ), "Modified CSS display: Assert element is hidden" );
  	jQuery( "#nothiddendiv" ).css( { "display": "block" } );
  	assert.ok( jQuery( "#nothiddendiv" ).is( ":visible" ), "Modified CSS display: Assert element is visible" );
  	assert.ok( !jQuery( window ).is( ":visible" ), "Calling is(':visible') on window does not throw an exception (#10267)." );
  	assert.ok( !jQuery( document ).is( ":visible" ), "Calling is(':visible') on document does not throw an exception (#10267)." );
  
  	assert.ok( jQuery( "#nothiddendiv" ).is( ":visible" ), "Modifying CSS display: Assert element is visible" );
  	jQuery( "#nothiddendiv" ).css( "display", "none" );
  	assert.ok( !jQuery( "#nothiddendiv" ).is( ":visible" ), "Modified CSS display: Assert element is hidden" );
  	jQuery( "#nothiddendiv" ).css( "display", "block" );
  	assert.ok( jQuery( "#nothiddendiv" ).is( ":visible" ), "Modified CSS display: Assert element is visible" );
  
  	assert.ok( jQuery( "#siblingspan" ).is( ":visible" ), "Span with no content is visible" );
  	$div = jQuery( "<div><span></span></div>" ).appendTo( "#qunit-fixture" );
  	assert.equal( $div.find( ":visible" ).length, 1, "Span with no content is visible" );
  	$div.css( { width: 0, height: 0, overflow: "hidden" } );
  	assert.ok( $div.is( ":visible" ), "Div with width and height of 0 is still visible (gh-2227)" );
  
  	// Safari 6-7 and iOS 6-7 report 0 width for br elements
  	// When newer browsers propagate, re-enable this test
  	// $br = jQuery( "<br/>" ).appendTo( "#qunit-fixture" );
  	// assert.ok( $br.is( ":visible" ), "br element is visible" );
  
  	$table = jQuery( "#table" );
  	$table.html( "<tr><td style='display:none'>cell</td><td>cell</td></tr>" );
  	assert.equal( jQuery( "#table td:visible" ).length, 1, "hidden cell is not perceived as visible (#4512). Works on table elements" );
  	$table.css( "display", "none" ).html( "<tr><td>cell</td><td>cell</td></tr>" );
  	assert.equal( jQuery( "#table td:visible" ).length, 0, "hidden cell children not perceived as visible (#4512)" );
  
  	assert.t( "Is Visible", "#qunit-fixture div:visible:lt(2)", [ "foo", "nothiddendiv" ] );
  	assert.t( "Is Not Hidden", "#qunit-fixture:hidden", [] );
  	assert.t( "Is Hidden", "#form input:hidden", [ "hidden1", "hidden2" ] );
  
  	$a = jQuery( "<a href='#'><h1>Header</h1></a>" ).appendTo( "#qunit-fixture" );
  	assert.ok( $a.is( ":visible" ), "Anchor tag with flow content is visible (gh-2227)" );
  } );
  
  QUnit.test( "Keep the last style if the new one isn't recognized by the browser (#14836)", function( assert ) {
  	assert.expect( 1 );
  
  	var el = jQuery( "<div></div>" ).css( "position", "absolute" ).css( "position", "fake value" );
  	assert.equal( el.css( "position" ), "absolute", "The old style is kept when setting an unrecognized value" );
  } );
  
  // Support: Edge 14 - 16 only
  // Edge collapses whitespace-only values when setting a style property and
  // there is no easy way for us to work around it. Just skip the test there
  // and hope for the better future.
  QUnit[ /\bedge\/16\./i.test( navigator.userAgent ) ? "skip" : "test" ](
  	"Keep the last style if the new one is a non-empty whitespace (gh-3204)",
  	function( assert ) {
  	assert.expect( 1 );
  
  	var el = jQuery( "<div></div>" ).css( "position", "absolute" ).css( "position", " " );
  	assert.equal( el.css( "position" ), "absolute", "The old style is kept when setting to a space" );
  } );
  
  QUnit.test( "Reset the style if set to an empty string", function( assert ) {
  	assert.expect( 1 );
  	var el = jQuery( "<div></div>" ).css( "position", "absolute" ).css( "position", "" );
  
  	// Some browsers return an empty string; others "static". Both those cases mean the style
  	// was reset successfully so accept them both.
  	assert.equal( el.css( "position" ) || "static", "static",
  		"The style can be reset by setting to an empty string" );
  } );
  
  QUnit.test(
  	"Clearing a Cloned Element's Style Shouldn't Clear the Original Element's Style (#8908)",
  	function( assert ) {
  		assert.expect( 24 );
  		var done = assert.async();
  		var styles = [ {
  				name: "backgroundAttachment",
  				value: [ "fixed" ],
  				expected: [ "scroll" ]
  			}, {
  				name: "backgroundColor",
  				value: [ "rgb(255, 0, 0)", "rgb(255,0,0)", "#ff0000" ],
  				expected: [ "transparent" ]
  			}, {
  
  				// Firefox returns auto's value
  				name: "backgroundImage",
  				value: [ "url('test.png')", "url(" + baseURL + "test.png)", "url(\"" + baseURL + "test.png\")" ],
  				expected: [ "none", "url(\"http://static.jquery.com/files/rocker/images/logo_jquery_215x53.gif\")" ]
  			}, {
  				name: "backgroundPosition",
  				value: [ "5% 5%" ],
  				expected: [ "0% 0%", "-1000px 0px", "-1000px 0%" ]
  			}, {
  
  				// Firefox returns no-repeat
  				name: "backgroundRepeat",
  				value: [ "repeat-y" ],
  				expected: [ "repeat", "no-repeat" ]
  			}, {
  				name: "backgroundClip",
  				value: [ "padding-box" ],
  				expected: [ "border-box" ]
  			}, {
  				name: "backgroundOrigin",
  				value: [ "content-box" ],
  				expected: [ "padding-box" ]
  			}, {
  				name: "backgroundSize",
  				value: [ "80px 60px" ],
  				expected: [ "auto auto" ]
  		} ];
  
  		jQuery.each( styles, function( index, style ) {
  			var $clone, $clonedChildren,
  				$source = jQuery( "#firstp" ),
  				source = $source[ 0 ],
  				$children = $source.children();
  
  			style.expected = style.expected.concat( [ "", "auto" ] );
  
  			if ( source.style[ style.name ] === undefined ) {
  				assert.ok( true, style.name +  ": style isn't supported and therefore not an issue" );
  				assert.ok( true );
  
  				return true;
  			}
  
  			$source.css( style.name, style.value[ 0 ] );
  			$children.css( style.name, style.value[ 0 ] );
  
  			$clone = $source.clone();
  			$clonedChildren = $clone.children();
  
  			$clone.css( style.name, "" );
  			$clonedChildren.css( style.name, "" );
  
  			window.setTimeout( function() {
  				assert.notEqual( $clone.css( style.name ), style.value[ 0 ], "Cloned css was changed" );
  
  				assert.ok( jQuery.inArray( $source.css( style.name ) !== -1, style.value ),
  					"Clearing clone.css() doesn't affect source.css(): " + style.name +
  					"; result: " + $source.css( style.name ) +
  					"; expected: " + style.value.join( "," ) );
  
  				assert.ok( jQuery.inArray( $children.css( style.name ) !== -1, style.value ),
  					"Clearing clonedChildren.css() doesn't affect children.css(): " + style.name +
  					"; result: " + $children.css( style.name ) +
  					"; expected: " + style.value.join( "," ) );
  			}, 100 );
  		} );
  
  		window.setTimeout( done, 1000 );
  	}
  );
  
  // Support: IE <=10 only
  // We have to jump through the hoops here in order to test work with "order" CSS property,
  // that some browsers do not support. This test is not, strictly speaking, correct,
  // but it's the best that we can do.
  ( function() {
  	var style = document.createElement( "div" ).style,
  		exist = "order" in style || "WebkitOrder" in style;
  
  	if ( exist ) {
  		QUnit.test( "Don't append px to CSS \"order\" value (#14049)", function( assert ) {
  			assert.expect( 1 );
  
  			var $elem = jQuery( "<div/>" );
  
  			$elem.css( "order", 2 );
  			assert.equal( $elem.css( "order" ), "2", "2 on order" );
  		} );
  	}
  } )();
  
  QUnit.test( "Do not throw on frame elements from css method (#15098)", function( assert ) {
  	assert.expect( 1 );
  
  	var frameWin, frameDoc,
  		frameElement = document.createElement( "iframe" ),
  		frameWrapDiv = document.createElement( "div" );
  
  	frameWrapDiv.appendChild( frameElement );
  	document.body.appendChild( frameWrapDiv );
  	frameWin = frameElement.contentWindow;
  	frameDoc = frameWin.document;
  	frameDoc.open();
  	frameDoc.write( "<!doctype html><html><body><div>Hi</div></body></html>" );
  	frameDoc.close();
  
  	frameWrapDiv.style.display = "none";
  
  	try {
  		jQuery( frameDoc.body ).css( "direction" );
  		assert.ok( true, "It didn't throw" );
  	} catch ( _ ) {
  		assert.ok( false, "It did throw" );
  	}
  } );
  
  ( function() {
  	var vendorPrefixes = [ "Webkit", "Moz", "ms" ];
  
  	function resetCssPropsFor( name ) {
  		delete jQuery.cssProps[ name ];
  		jQuery.each( vendorPrefixes, function( index, prefix ) {
  			delete jQuery.cssProps[ prefix + name[ 0 ].toUpperCase() + name.slice( 1 ) ];
  		} );
  	}
  
  	QUnit.test( "Don't default to a cached previously used wrong prefixed name (gh-2015)", function( assert ) {
  
  		// Note: this test needs a property we know is only supported in a prefixed version
  		// by at least one of our main supported browsers. This may get out of date so let's
  		// use -(webkit|moz)-appearance as well as those two are not on a standards track.
  		var appearanceName, transformName, elem, elemStyle,
  			transformVal = "translate(5px, 2px)",
  			emptyStyle = document.createElement( "div" ).style;
  
  		if ( "appearance" in emptyStyle ) {
  			appearanceName = "appearance";
  		} else {
  			jQuery.each( vendorPrefixes, function( index, prefix ) {
  				var prefixedProp = prefix + "Appearance";
  				if ( prefixedProp in emptyStyle ) {
  					appearanceName = prefixedProp;
  				}
  			} );
  		}
  
  		if ( "transform" in emptyStyle ) {
  			transformName = "transform";
  		} else {
  			jQuery.each( vendorPrefixes, function( index, prefix ) {
  				var prefixedProp = prefix + "Transform";
  				if ( prefixedProp in emptyStyle ) {
  					transformName = prefixedProp;
  				}
  			} );
  		}
  
  		assert.expect( !!appearanceName + !!transformName + 1 );
  
  		resetCssPropsFor( "appearance" );
  		resetCssPropsFor( "transform" );
  
  		elem = jQuery( "<div/>" )
  			.css( {
  				msAppearance: "none",
  				appearance: "none",
  
  				// Only the ms prefix is used to make sure we haven't e.g. set
  				// webkitTransform ourselves in the test.
  				msTransform: transformVal,
  				transform: transformVal
  			} );
  		elemStyle = elem[ 0 ].style;
  
  		if ( appearanceName ) {
  			assert.equal( elemStyle[ appearanceName ], "none", "setting properly-prefixed appearance" );
  		}
  		if ( transformName ) {
  			assert.equal( elemStyle[ transformName ], transformVal, "setting properly-prefixed transform" );
  		}
  		assert.equal( elemStyle[ "undefined" ], undefined, "Nothing writes to node.style.undefined" );
  	} );
  
  	QUnit.test( "Don't detect fake set properties on a node when caching the prefixed version", function( assert ) {
  		assert.expect( 1 );
  
  		var elem = jQuery( "<div/>" ),
  			style = elem[ 0 ].style;
  		style.MozFakeProperty = "old value";
  		elem.css( "fakeProperty", "new value" );
  
  		assert.equal( style.MozFakeProperty, "old value", "Fake prefixed property is not cached" );
  	} );
  
  } )();
  
  ( function() {
  	var supportsCssVars,
  		elem = jQuery( "<div>" ).appendTo( document.body ),
  		div = elem[ 0 ];
  
  	div.style.setProperty( "--prop", "value" );
  	supportsCssVars = !!getComputedStyle( div ).getPropertyValue( "--prop" );
  	elem.remove();
  
  	QUnit[ supportsCssVars ? "test" : "skip" ]( "css(--customProperty)", function( assert ) {
  		jQuery( "#qunit-fixture" ).append(
  			"<style>\n" +
  			"    .test__customProperties {\n" +
  			"        --prop1:val1;\n" +
  			"        --prop2: val2;\n" +
  			"        --prop3:val3 ;\n" +
  			"        --prop4:\"val4\";\n" +
  			"        --prop5:'val5';\n" +
  			"    }\n" +
  			"</style>"
  		);
  
  		var div = jQuery( "<div>" ).appendTo( "#qunit-fixture" ),
  			$elem = jQuery( "<div>" ).addClass( "test__customProperties" )
  				.appendTo( "#qunit-fixture" ),
  			webkit = /\bsafari\b/i.test( navigator.userAgent ) &&
  				!/\firefox\b/i.test( navigator.userAgent ) &&
  				!/\edge\b/i.test( navigator.userAgent ),
  			oldSafari = webkit && ( /\b9\.\d(\.\d+)* safari/i.test( navigator.userAgent ) ||
  				/\b10\.0(\.\d+)* safari/i.test( navigator.userAgent ) ||
  				/iphone os (?:9|10)_/i.test( navigator.userAgent ) ),
  			expected = 10;
  
  		if ( webkit ) {
  			expected -= 2;
  		}
  		if ( oldSafari ) {
  			expected -= 2;
  		}
  		assert.expect( expected );
  
  		div.css( "--color", "blue" );
  		assert.equal( div.css( "--color" ), "blue", "Modified CSS custom property using string" );
  
  		div.css( "--color", "yellow" );
  		assert.equal( div.css( "--color" ), "yellow", "Overwrite CSS custom property" );
  
  		div.css( { "--color": "red" } );
  		assert.equal( div.css( "--color" ), "red", "Modified CSS custom property using object" );
  
  		div.css( { "--mixedCase": "green" } );
  		div.css( { "--mixed-case": "red" } );
  		assert.equal( div.css( "--mixedCase" ), "green",
  			"Modified CSS custom property with mixed case" );
  
  		div.css( { "--theme-dark": "purple" } );
  		div.css( { "--themeDark": "red" } );
  		assert.equal( div.css( "--theme-dark" ), "purple",
  			"Modified CSS custom property with dashed name" );
  
  		assert.equal( $elem.css( "--prop1" ), "val1", "Basic CSS custom property" );
  
  		// Support: Safari 9.1-10.0 only
  		// Safari collapses whitespaces & quotes. Ignore it.
  		if ( !oldSafari ) {
  			assert.equal( $elem.css( "--prop2" ), " val2", "Preceding whitespace maintained" );
  			assert.equal( $elem.css( "--prop3" ), "val3 ", "Following whitespace maintained" );
  		}
  
  		// Support: Chrome 49-55, Safari 9.1-10.0
  		// Chrome treats single quotes as double ones.
  		// Safari treats double quotes as single ones.
  		if ( !webkit ) {
  			assert.equal( $elem.css( "--prop4" ), "\"val4\"", "Works with double quotes" );
  			assert.equal( $elem.css( "--prop5" ), "'val5'", "Works with single quotes" );
  		}
  	} );
  
  	QUnit[ supportsCssVars ? "test" : "skip" ]( "Don't append px to CSS vars", function( assert ) {
  		assert.expect( 3 );
  
  		var $div = jQuery( "<div>" ).appendTo( "#qunit-fixture" );
  
  		$div
  			.css( "--a", 3 )
  			.css( "--line-height", 4 )
  			.css( "--lineHeight", 5 );
  
  		assert.equal( $div.css( "--a" ), "3", "--a: 3" );
  		assert.equal( $div.css( "--line-height" ), "4", "--line-height: 4" );
  		assert.equal( $div.css( "--lineHeight" ), "5", "--lineHeight: 5" );
  	} );
  } )();
  
  }
  