Our old proprietary version of the QUnit subsuite (composite) addon.

qunit-composite.js

(function( QUnit ) {

var subsuiteFrame;

QUnit.extend( QUnit, {
	testSuites: function( suites ) {
		QUnit.done(function(result) {
			subsuiteFrame.style.display = "none";
		});

		for ( var i = 0; i < suites.length; i++ ) {
			(function( suite ) {
				asyncTest( suite, function() {
					QUnit.runSuite( suite );
				});
			})( suites[i] );
		}
	},

	runSuite: function( suite ) {
		var body = document.getElementsByTagName( "body" )[0],
			iframe = subsuiteFrame = document.createElement( "iframe" ),
			iframeWin;

		iframe.className = "qunit-subsuite";
		body.appendChild( iframe );

		function onIframeLoad() {
			var module,
				test,
				count = 0;

			var iFrameQUnit = iframeWin.QUnit;
			
			iFrameQUnit.moduleStart(function( data ) {
                		// capture module name for messages
                		module = data.name;
            		});

            		iFrameQUnit.testStart(function( data ) {
                		// capture test name for messages
                		test = data.name;
            		});

            		iFrameQUnit.log(function( data ) {
                		// pass all test details through to the main page
                		var message = ( module ? module + ": " : "" ) + test + ": " + ( data.message || ( data.result ? 'okay' : 'failed' ));
                		expect( ++count );
                		QUnit.push( data.result, data.actual, data.expected, message );
            		});

            		iFrameQUnit.done(function( data ) {
                		// start the wrapper test from the main page
                		start();
            		});
		}
		QUnit.addEvent( iframe, "load", onIframeLoad );

		iframeWin = iframe.contentWindow;
		iframe.setAttribute( "src", suite );

		this.runSuite = function( suite ) {
			iframe.setAttribute( "src", suite );
		};
	}
});

QUnit.testStart(function( data ) {
    // update the test status to show which test suite is running
    QUnit.id( "qunit-testresult" ).innerHTML = "Running " + data.name + "...<br/>&nbsp;";
});

QUnit.testDone(function() {
	var current = QUnit.id( this.config.current.id ),
		src = this.iframe.src;
	
	QUnit.addEvent(current, "dblclick", function( e ) {
		var target = e && e.target ? e.target : window.event.srcElement;
		if ( target.nodeName.toLowerCase() === "span" || target.nodeName.toLowerCase() === "b" ) {
			target = target.parentNode;
		}
		if ( window.location && target.nodeName.toLowerCase() === "strong" ) {
			window.location.href = src;
		}
	});

	current.getElementsByTagName('a')[0].href = src;
});

})( QUnit );