diff --git a/tests/unit/media/index.html b/tests/unit/media/index.html
index 846add95..920d80a2 100644
--- a/tests/unit/media/index.html
+++ b/tests/unit/media/index.html
@@ -23,13 +23,6 @@
 </ol>
 
 <div id="main" style="position: absolute; top: -10000px; left: -10000px;">
-
-<div id="widget-wrapper">
-	<div id="widget">
-		<div>...</div>
-	</div>
-</div>
-
 </div>
 
 </body>
diff --git a/tests/unit/support/index.html b/tests/unit/support/index.html
index 14f1d8c2..bac2a0cb 100644
--- a/tests/unit/support/index.html
+++ b/tests/unit/support/index.html
@@ -24,13 +24,6 @@
 </ol>
 
 <div id="main" style="position: absolute; top: -10000px; left: -10000px;">
-
-<div id="widget-wrapper">
-	<div id="widget">
-		<div>...</div>
-	</div>
-</div>
-
 </div>
 
 </body>
diff --git a/tests/unit/support/support_core.js b/tests/unit/support/support_core.js
index 1e984411..e41350db 100644
--- a/tests/unit/support/support_core.js
+++ b/tests/unit/support/support_core.js
@@ -1,36 +1,88 @@
 /*
  * mobile support unit tests
  */
+
 (function( $ ) {
-	var reloadLib = function(){
-		$("script[src$=support.js]").appendTo("body");
-	};
+	//NOTE alert tester that running the file locally will not work for these tests
+	if ( location.protocol == "file:" ) {
+		var message = "Tests require script reload and cannot be run via file: protocol";
 
-	module("mobile.support", {
-		teardown: function(){
-			$("body script[src$=support.js]").remove();
-		}
-	});
+		test(message, function(){
+			ok(false, message);
+		});
+	} else {
+		var reloadCount = 0,
+		lib = $("script[src$=support.js]"),
+	  src = lib.attr('src'),
+	  reloadLib = function(){
+			//NOTE append "cache breaker" to force reload
+			lib.attr('src', src + "?" + reloadCount++);
+			$("body").append(lib);
+	  },
+		prependToFn = $.fn.prependTo;
 
-	// NOTE test has debatable value, only prevents property name changes
-	// and improper sources for attribute checks
-	test( "detects functionality from basic properties and attributes", function(){
-		// TODO expose properties for less brittle tests
-		$.extend(window, {
-			orientation: true,
-			WebKitTransitionEvent: true
+		module("mobile.support", {
+			teardown: function(){
+				//NOTE undo any mocking
+				$.fn.prependTo = prependToFn;
+			}
 		});
 
-		document["ontouchend"] = true;
-		history.pushState = function(){};
-		$.mobile.media = function(){ return true; };
+		// NOTE following two tests have debatable value as they only
+		//      prevent property name changes and improper attribute checks
+		test( "detects functionality from basic affirmative properties and attributes", function(){
+			// TODO expose properties for less brittle tests
+			$.extend(window, {
+				WebKitTransitionEvent: true,
+				orientation: true
+			});
 
-		reloadLib();
+			document.ontouchend = true;
 
-		ok($.support.orientation);
-		ok($.support.cssTransitions);
-		ok($.support.touch);
-		ok($.support.pushState);
-		ok($.support.mediaquery);
-	});
+			history.pushState = function(){};
+			$.mobile.media = function(){ return true; };
+
+			reloadLib();
+
+			ok($.support.orientation);
+			ok($.support.touch);
+			ok($.support.cssTransitions);
+			ok($.support.pushState);
+			ok($.support.mediaquery);
+		});
+
+		test( "detects functionality from basic negative properties and attributes (where possible)", function(){
+			delete window["orientation"];
+			delete document["ontouchend"];
+
+			reloadLib();
+
+			ok(!$.support.orientation);
+			ok(!$.support.touch);
+		});
+
+		// NOTE mocks prependTo to simulate base href updates or lack thereof
+		var mockBaseCheck = function( url ){
+			var prependToFn = $.fn.prependTo;
+
+			$.fn.prependTo = function( selector ){
+				var result = prependToFn.call($(this), selector);
+				if(this[0].href && this[0].href.indexOf("testurl") != -1)
+					result = [{href: url}];
+				return result;
+			};
+		};
+
+		test( "detects dynamic base tag when new base element added and base href updates", function(){
+			mockBaseCheck(location.protocol + '//' + location.host + location.pathname + "ui-dir/");
+			reloadLib();
+			ok($.support.dynamicBaseTag);
+		});
+
+		test( "detects no dynamic base tag when new base element added and base href unchanged", function(){
+			mockBaseCheck('testurl');
+			reloadLib();
+			ok(!$.support.dynamicBaseTag);
+		});
+	}
 })(jQuery);
\ No newline at end of file