Add test for "destroy" method

Add test to confirm elements are returned to their original states
after "destroy"

src/js/coverflow.js

@@ -200,7 +200,7 @@
 					.each(function(){
 						var $this = $(this);
 						$this.data("origstyle", $this.attr("style") || "");
-					})
+					});
 
 			this.element
 				.addClass( "ui-coverflow" )

tests/qunit/methods.js

@@ -1,4 +1,11 @@
 (function($) {
+	function getAttributes( $elem ) {
+		var attrs = {};
+		$.each( $elem[ 0 ].attributes, function () {
+			attrs[ this.nodeName ] = this.nodeValue;
+		});
+		return attrs;
+	}
 
 	module( 'CoverflowJS: methods', {
 		setup: function() {
@@ -11,5 +18,36 @@
 		deepEqual( this.el, this.el.coverflow(), 'method is chainable' );
 		deepEqual( this.el.get( 0 ), this.el.coverflow( 'widget' ).get( 0 ), 'widget method' );
 	});
+
+	test( 'destroy', 9, function () {
+		var originalAttrs = getAttributes( this.el ),
+			parentOriginalAttrs = getAttributes( this.el.parent() ),
+			endAttrs, parentEndAttrs;
+
+		ok( ! this.el.hasClass( "ui-coverflow" ), "Element does not have coverflow class" );
+		ok( ! this.el.parent().hasClass( "ui-coverflow-wrapper" ), "Element's parent does not have coverflow wrapper class" );
+
+		this.el.coverflow();
+
+		ok( this.el.hasClass( "ui-coverflow" ), "Element has coverflow class" );
+		ok( this.el.parent().hasClass( "ui-coverflow-wrapper" ), "Element's parent has coverflow wrapper class" );
+
+		this.el.coverflow( "destroy" );
+
+		ok( ! this.el.hasClass( "ui-coverflow" ), "Element does not have coverflow class" );
+		ok( ! this.el.parent().hasClass( "ui-coverflow-wrapper" ), "Element's parent does not have coverflow wrapper class" );
+
+		endAttrs = getAttributes( this.el );
+
+		// Have to compare each attribute since the original element may not have had any styling, leading to a comparison of "" to undefined
+		$.each( endAttrs, function ( n, v ) {
+			strictEqual	( v, ( originalAttrs[ n ] || ""), "Element attribute " + n + " matches original after destroy" );
+		});
+
+		parentEndAttrs = getAttributes( this.el.parent() );
+
+		deepEqual( parentOriginalAttrs, parentEndAttrs, "Element's parent attributes match originals after destroy" );
+
+	});
 
 })( jQuery );