Applied changes from emailed code review

chrome/content/tests/qunit.js

Index: chrome/content/tests/qunit.js
===================================================================
new file mode 100644
--- /dev/null
+++ b/chrome/content/tests/qunit.js
@@ -0,0 +1,1808 @@
+/**
+ * QUnit v1.7.0pre - A JavaScript Unit Testing Framework
+ *
+ * http://docs.jquery.com/QUnit
+ *
+ * Copyright (c) 2012 John Resig, Jörn Zaefferer
+ * Dual licensed under the MIT (MIT-LICENSE.txt)
+ * or GPL (GPL-LICENSE.txt) licenses.
+ */
+
+(function( window ) {
+
+var QUnit,
+	config,
+	testId = 0,
+	toString = Object.prototype.toString,
+	hasOwn = Object.prototype.hasOwnProperty,
+	defined = {
+	setTimeout: typeof window.setTimeout !== "undefined",
+	sessionStorage: (function() {
+		var x = "qunit-test-string";
+		try {
+			sessionStorage.setItem( x, x );
+			sessionStorage.removeItem( x );
+			return true;
+		} catch( e ) {
+			return false;
+		}
+	}())
+};
+
+function Test( settings ) {
+	extend( this, settings );
+	this.assertions = [];
+	this.testNumber = ++Test.count;
+}
+
+Test.count = 0;
+
+Test.prototype = {
+	init: function() {
+		var a, b, li,
+        tests = id( "qunit-tests" );
+
+		if ( tests ) {
+			b = document.createElement( "strong" );
+			b.innerHTML = this.name;
+
+			// `a` initialized at top of scope
+			a = document.createElement( "a" );
+			a.innerHTML = "Rerun";
+			a.href = QUnit.url({ testNumber: this.testNumber });
+
+			li = document.createElement( "li" );
+			li.appendChild( b );
+			li.appendChild( a );
+			li.className = "running";
+			li.id = this.id = "qunit-test-output" + testId++;
+
+			tests.appendChild( li );
+		}
+	},
+	setup: function() {
+		if ( this.module !== config.previousModule ) {
+			if ( config.previousModule ) {
+				runLoggingCallbacks( "moduleDone", QUnit, {
+					name: config.previousModule,
+					failed: config.moduleStats.bad,
+					passed: config.moduleStats.all - config.moduleStats.bad,
+					total: config.moduleStats.all
+				});
+			}
+			config.previousModule = this.module;
+			config.moduleStats = { all: 0, bad: 0 };
+			runLoggingCallbacks( "moduleStart", QUnit, {
+				name: this.module
+			});
+		} else if ( config.autorun ) {
+			runLoggingCallbacks( "moduleStart", QUnit, {
+				name: this.module
+			});
+		}
+
+		config.current = this;
+
+		this.testEnvironment = extend({
+			setup: function() {},
+			teardown: function() {}
+		}, this.moduleTestEnvironment );
+
+		runLoggingCallbacks( "testStart", QUnit, {
+			name: this.testName,
+			module: this.module
+		});
+
+		// allow utility functions to access the current test environment
+		// TODO why??
+		QUnit.current_testEnvironment = this.testEnvironment;
+
+		if ( !config.pollution ) {
+			saveGlobal();
+		}
+		if ( config.notrycatch ) {
+			this.testEnvironment.setup.call( this.testEnvironment );
+			return;
+		}
+		try {
+			this.testEnvironment.setup.call( this.testEnvironment );
+		} catch( e ) {
+			QUnit.pushFailure( "Setup failed on " + this.testName + ": " + e.message, extractStacktrace( e, 1 ) );
+		}
+	},
+	run: function() {
+		config.current = this;
+
+		var running = id( "qunit-testresult" );
+
+		if ( running ) {
+			running.innerHTML = "Running: <br/>" + this.name;
+		}
+
+		if ( this.async ) {
+			QUnit.stop();
+		}
+
+		if ( config.notrycatch ) {
+			this.callback.call( this.testEnvironment, QUnit.assert );
+			return;
+		}
+
+		try {
+			this.callback.call( this.testEnvironment, QUnit.assert );
+		} catch( e ) {
+			QUnit.pushFailure( "Died on test #" + (this.assertions.length + 1) + ": " + e.message, extractStacktrace( e, 1 ) );
+			// else next test will carry the responsibility
+			saveGlobal();
+
+			// Restart the tests if they're blocking
+			if ( config.blocking ) {
+				QUnit.start();
+			}
+		}
+	},
+	teardown: function() {
+		config.current = this;
+		if ( config.notrycatch ) {
+			this.testEnvironment.teardown.call( this.testEnvironment );
+			return;
+		} else {
+			try {
+				this.testEnvironment.teardown.call( this.testEnvironment );
+			} catch( e ) {
+				QUnit.pushFailure( "Teardown failed on " + this.testName + ": " + e.message, extractStacktrace( e, 1 ) );
+			}
+		}
+		checkPollution();
+	},
+	finish: function() {
+		config.current = this;
+		if ( this.expected != null && this.expected != this.assertions.length ) {
+			QUnit.pushFailure( "Expected " + this.expected + " assertions, but " + this.assertions.length + " were run", this.stack );
+		} else if ( this.expected == null && !this.assertions.length ) {
+			QUnit.pushFailure( "Expected at least one assertion, but none were run - call expect(0) to accept zero assertions.", this.stack );
+		}
+
+		var assertion, a, b, i, li, ol,
+			test = this,
+			good = 0,
+			bad = 0,
+			tests = id( "qunit-tests" );
+
+		config.stats.all += this.assertions.length;
+		config.moduleStats.all += this.assertions.length;
+
+		if ( tests ) {
+			ol = document.createElement( "ol" );
+
+			for ( i = 0; i < this.assertions.length; i++ ) {
+				assertion = this.assertions[i];
+
+				li = document.createElement( "li" );
+				li.className = assertion.result ? "pass" : "fail";
+				li.innerHTML = assertion.message || ( assertion.result ? "okay" : "failed" );
+				ol.appendChild( li );
+
+				if ( assertion.result ) {
+					good++;
+				} else {
+					bad++;
+					config.stats.bad++;
+					config.moduleStats.bad++;
+				}
+			}
+
+			// store result when possible
+			if ( QUnit.config.reorder && defined.sessionStorage ) {
+				if ( bad ) {
+					sessionStorage.setItem( "qunit-test-" + this.module + "-" + this.testName, bad );
+				} else {
+					sessionStorage.removeItem( "qunit-test-" + this.module + "-" + this.testName );
+				}
+			}
+
+			if ( bad === 0 ) {
+				ol.style.display = "none";
+			}
+
+			// `b` initialized at top of scope
+			b = document.createElement( "strong" );
+			b.innerHTML = this.name + " <b class='counts'>(<b class='failed'>" + bad + "</b>, <b class='passed'>" + good + "</b>, " + this.assertions.length + ")</b>";
+
+			addEvent(b, "click", function() {
+				var next = b.nextSibling.nextSibling,
+					display = next.style.display;
+				next.style.display = display === "none" ? "block" : "none";
+			});
+
+			addEvent(b, "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 = QUnit.url({ testNumber: test.testNumber });
+				}
+			});
+
+			// `li` initialized at top of scope
+			li = id( this.id );
+			li.className = bad ? "fail" : "pass";
+			li.removeChild( li.firstChild );
+			a = li.firstChild;
+			li.appendChild( b );
+			li.appendChild ( a );
+			li.appendChild( ol );
+
+		} else {
+			for ( i = 0; i < this.assertions.length; i++ ) {
+				if ( !this.assertions[i].result ) {
+					bad++;
+					config.stats.bad++;
+					config.moduleStats.bad++;
+				}
+			}
+		}
+
+		runLoggingCallbacks( "testDone", QUnit, {
+			name: this.testName,
+			module: this.module,
+			failed: bad,
+			passed: this.assertions.length - bad,
+			total: this.assertions.length
+		});
+
+		QUnit.reset();
+	},
+
+	queue: function() {
+		var bad,
+			test = this;
+
+		synchronize(function() {
+			test.init();
+		});
+		function run() {
+			// each of these can by async
+			synchronize(function() {
+				test.setup();
+			});
+			synchronize(function() {
+				test.run();
+			});
+			synchronize(function() {
+				test.teardown();
+			});
+			synchronize(function() {
+				test.finish();
+			});
+		}
+
+		// `bad` initialized at top of scope
+		// defer when previous test run passed, if storage is available
+		bad = QUnit.config.reorder && defined.sessionStorage &&
+						+sessionStorage.getItem( "qunit-test-" + this.module + "-" + this.testName );
+
+		if ( bad ) {
+			run();
+		} else {
+			synchronize( run, true );
+		}
+	}
+};
+
+// Root QUnit object.
+// `QUnit` initialized at top of scope
+QUnit = {
+
+	// call on start of module test to prepend name to all tests
+	module: function( name, testEnvironment ) {
+		config.currentModule = name;
+		config.currentModuleTestEnviroment = testEnvironment;
+	},
+
+	asyncTest: function( testName, expected, callback ) {
+		if ( arguments.length === 2 ) {
+			callback = expected;
+			expected = null;
+		}
+
+		QUnit.test( testName, expected, callback, true );
+	},
+
+	test: function( testName, expected, callback, async ) {
+		var test,
+			name = "<span class='test-name'>" + escapeInnerText( testName ) + "</span>";
+
+		if ( arguments.length === 2 ) {
+			callback = expected;
+			expected = null;
+		}
+
+		if ( config.currentModule ) {
+			name = "<span class='module-name'>" + config.currentModule + "</span>: " + name;
+		}
+
+		test = new Test({
+			name: name,
+			testName: testName,
+			expected: expected,
+			async: async,
+			callback: callback,
+			module: config.currentModule,
+			moduleTestEnvironment: config.currentModuleTestEnviroment,
+			stack: sourceFromStacktrace( 2 )
+		});
+
+		if ( !validTest( test ) ) {
+			return;
+		}
+
+		test.queue();
+	},
+
+	// Specify the number of expected assertions to gurantee that failed test (no assertions are run at all) don't slip through.
+	expect: function( asserts ) {
+		config.current.expected = asserts;
+	},
+
+	start: function( count ) {
+		config.semaphore -= count || 1;
+		// don't start until equal number of stop-calls
+		if ( config.semaphore > 0 ) {
+			return;
+		}
+		// ignore if start is called more often then stop
+		if ( config.semaphore < 0 ) {
+			config.semaphore = 0;
+		}
+		// A slight delay, to avoid any current callbacks
+		if ( defined.setTimeout ) {
+			window.setTimeout(function() {
+				if ( config.semaphore > 0 ) {
+					return;
+				}
+				if ( config.timeout ) {
+					clearTimeout( config.timeout );
+				}
+
+				config.blocking = false;
+				process( true );
+			}, 13);
+		} else {
+			config.blocking = false;
+			process( true );
+		}
+	},
+
+	stop: function( count ) {
+		config.semaphore += count || 1;
+		config.blocking = true;
+
+		if ( config.testTimeout && defined.setTimeout ) {
+			clearTimeout( config.timeout );
+			config.timeout = window.setTimeout(function() {
+				QUnit.ok( false, "Test timed out" );
+				config.semaphore = 1;
+				QUnit.start();
+			}, config.testTimeout );
+		}
+	}
+};
+
+// Asssert helpers
+// All of these must call either QUnit.push() or manually do:
+// - runLoggingCallbacks( "log", .. );
+// - config.current.assertions.push({ .. });
+QUnit.assert = {
+	/**
+	 * Asserts rough true-ish result.
+	 * @example ok( "asdfasdf".length > 5, "There must be at least 5 chars" );
+	 */
+	ok: function( result, msg ) {
+		if ( !config.current ) {
+			throw new Error( "ok() assertion outside test context, was " + sourceFromStacktrace(2) );
+		}
+		result = !!result;
+
+		var source,
+			details = {
+				result: result,
+				message: msg
+			};
+
+		msg = escapeInnerText( msg || (result ? "okay" : "failed" ) );
+		msg = "<span class='test-message'>" + msg + "</span>";
+
+		if ( !result ) {
+			source = sourceFromStacktrace( 2 );
+			if ( source ) {
+				details.source = source;
+				msg += "<table><tr class='test-source'><th>Source: </th><td><pre>" + escapeInnerText( source ) + "</pre></td></tr></table>";
+			}
+		}
+		runLoggingCallbacks( "log", QUnit, details );
+		config.current.assertions.push({
+			result: result,
+			message: msg
+		});
+	},
+
+	/**
+	 * Assert that the first two arguments are equal, with an optional message.
+	 * Prints out both actual and expected values.
+	 * @example equal( format( "Received {0} bytes.", 2), "Received 2 bytes.", "format() replaces {0} with next argument" );
+	 */
+	equal: function( actual, expected, message ) {
+		QUnit.push( expected == actual, actual, expected, message );
+	},
+
+	notEqual: function( actual, expected, message ) {
+		QUnit.push( expected != actual, actual, expected, message );
+	},
+
+	deepEqual: function( actual, expected, message ) {
+		QUnit.push( QUnit.equiv(actual, expected), actual, expected, message );
+	},
+
+	notDeepEqual: function( actual, expected, message ) {
+		QUnit.push( !QUnit.equiv(actual, expected), actual, expected, message );
+	},
+
+	strictEqual: function( actual, expected, message ) {
+		QUnit.push( expected === actual, actual, expected, message );
+	},
+
+	notStrictEqual: function( actual, expected, message ) {
+		QUnit.push( expected !== actual, actual, expected, message );
+	},
+
+	raises: function( block, expected, message ) {
+		var actual,
+			ok = false;
+
+		if ( typeof expected === "string" ) {
+			message = expected;
+			expected = null;
+		}
+
+		try {
+			block.call( config.current.testEnvironment );
+		} catch (e) {
+			actual = e;
+		}
+
+		if ( actual ) {
+			// we don't want to validate thrown error
+			if ( !expected ) {
+				ok = true;
+			// expected is a regexp
+			} else if ( QUnit.objectType( expected ) === "regexp" ) {
+				ok = expected.test( actual );
+			// expected is a constructor
+			} else if ( actual instanceof expected ) {
+				ok = true;
+			// expected is a validation function which returns true is validation passed
+			} else if ( expected.call( {}, actual ) === true ) {
+				ok = true;
+			}
+		}
+
+		QUnit.push( ok, actual, null, message );
+	}
+};
+
+// @deprecated: Kept assertion helpers in root for backwards compatibility
+extend( QUnit, QUnit.assert );
+
+/**
+ * @deprecated: Kept for backwards compatibility
+ * next step: remove entirely
+ */
+QUnit.equals = function() {
+	QUnit.push( false, false, false, "QUnit.equals has been deprecated since 2009 (e88049a0), use QUnit.equal instead" );
+};
+QUnit.same = function() {
+	QUnit.push( false, false, false, "QUnit.same has been deprecated since 2009 (e88049a0), use QUnit.deepEqual instead" );
+};
+
+// We want access to the constructor's prototype
+(function() {
+	function F() {}
+	F.prototype = QUnit;
+	QUnit = new F();
+	// Make F QUnit's constructor so that we can add to the prototype later
+	QUnit.constructor = F;
+}());
+
+/**
+ * Config object: Maintain internal state
+ * Later exposed as QUnit.config
+ * `config` initialized at top of scope
+ */
+config = {
+	// The queue of tests to run
+	queue: [],
+
+	// block until document ready
+	blocking: true,
+
+	// when enabled, show only failing tests
+	// gets persisted through sessionStorage and can be changed in UI via checkbox
+	hidepassed: false,
+
+	// by default, run previously failed tests first
+	// very useful in combination with "Hide passed tests" checked
+	reorder: true,
+
+	// by default, modify document.title when suite is done
+	altertitle: true,
+
+	urlConfig: [ "noglobals", "notrycatch" ],
+
+	// logging callback queues
+	begin: [],
+	done: [],
+	log: [],
+	testStart: [],
+	testDone: [],
+	moduleStart: [],
+	moduleDone: []
+};
+
+// Initialize more QUnit.config and QUnit.urlParams
+(function() {
+	var i,
+		location = window.location || { search: "", protocol: "file:" },
+		params = location.search.slice( 1 ).split( "&" ),
+		length = params.length,
+		urlParams = {},
+		current;
+
+	if ( params[ 0 ] ) {
+		for ( i = 0; i < length; i++ ) {
+			current = params[ i ].split( "=" );
+			current[ 0 ] = decodeURIComponent( current[ 0 ] );
+			// allow just a key to turn on a flag, e.g., test.html?noglobals
+			current[ 1 ] = current[ 1 ] ? decodeURIComponent( current[ 1 ] ) : true;
+			urlParams[ current[ 0 ] ] = current[ 1 ];
+		}
+	}
+
+	QUnit.urlParams = urlParams;
+	config.filter = urlParams.filter;
+	config.testNumber = parseInt( urlParams.testNumber, 10 ) || null;
+
+	// Figure out if we're running the tests from a server or not
+	QUnit.isLocal = location.protocol === "file:";
+}());
+
+// Export global variables, unless an 'exports' object exists,
+// in that case we assume we're in CommonJS (dealt with on the bottom of the script)
+if ( typeof exports === "undefined" ) {
+	extend( window, QUnit );
+
+	// Expose QUnit object
+	window.QUnit = QUnit;
+}
+
+// Extend QUnit object,
+// these after set here because they should not be exposed as global functions
+extend( QUnit, {
+	config: config,
+
+	// Initialize the configuration options
+	init: function() {
+		extend( config, {
+			stats: { all: 0, bad: 0 },
+			moduleStats: { all: 0, bad: 0 },
+			started: +new Date(),
+			updateRate: 1000,
+			blocking: false,
+			autostart: true,
+			autorun: false,
+			filter: "",
+			queue: [],
+			semaphore: 0
+		});
+
+		var tests, banner, result,
+			qunit = id( "qunit" );
+
+		if ( qunit ) {
+			qunit.innerHTML =
+				"<h1 id='qunit-header'>" + escapeInnerText( document.title ) + "</h1>" +
+				"<h2 id='qunit-banner'></h2>" +
+				"<div id='qunit-testrunner-toolbar'></div>" +
+				"<h2 id='qunit-userAgent'></h2>" +
+				"<ol id='qunit-tests'></ol>";
+		}
+
+		tests = id( "qunit-tests" );
+		banner = id( "qunit-banner" );
+		result = id( "qunit-testresult" );
+
+		if ( tests ) {
+			tests.innerHTML = "";
+		}
+
+		if ( banner ) {
+			banner.className = "";
+		}
+
+		if ( result ) {
+			result.parentNode.removeChild( result );
+		}
+
+		if ( tests ) {
+			result = document.createElement( "p" );
+			result.id = "qunit-testresult";
+			result.className = "result";
+			tests.parentNode.insertBefore( result, tests );
+			result.innerHTML = "Running...<br/>&nbsp;";
+		}
+	},
+
+	// Resets the test setup. Useful for tests that modify the DOM.
+	// If jQuery is available, uses jQuery's html(), otherwise just innerHTML.
+	reset: function() {
+		var fixture;
+
+		if ( window.jQuery ) {
+			jQuery( "#qunit-fixture" ).html( config.fixture );
+		} else {
+			fixture = id( "qunit-fixture" );
+			if ( fixture ) {
+				fixture.innerHTML = config.fixture;
+			}
+		}
+	},
+
+	// Trigger an event on an element.
+	// @example triggerEvent( document.body, "click" );
+	triggerEvent: function( elem, type, event ) {
+		if ( document.createEvent ) {
+			event = document.createEvent( "MouseEvents" );
+			event.initMouseEvent(type, true, true, elem.ownerDocument.defaultView,
+				0, 0, 0, 0, 0, false, false, false, false, 0, null);
+
+			elem.dispatchEvent( event );
+		} else if ( elem.fireEvent ) {
+			elem.fireEvent( "on" + type );
+		}
+	},
+
+	// Safe object type checking
+	is: function( type, obj ) {
+		return QUnit.objectType( obj ) == type;
+	},
+
+	objectType: function( obj ) {
+		if ( typeof obj === "undefined" ) {
+				return "undefined";
+		// consider: typeof null === object
+		}
+		if ( obj === null ) {
+				return "null";
+		}
+
+		var type = toString.call( obj ).match(/^\[object\s(.*)\]$/)[1] || "";
+
+		switch ( type ) {
+			case "Number":
+				if ( isNaN(obj) ) {
+					return "nan";
+				}
+				return "number";
+			case "String":
+			case "Boolean":
+			case "Array":
+			case "Date":
+			case "RegExp":
+			case "Function":
+				return type.toLowerCase();
+		}
+		if ( typeof obj === "object" ) {
+			return "object";
+		}
+		return undefined;
+	},
+
+	push: function( result, actual, expected, message ) {
+		if ( !config.current ) {
+			throw new Error( "assertion outside test context, was " + sourceFromStacktrace() );
+		}
+
+		var output, source,
+			details = {
+				result: result,
+				message: message,
+				actual: actual,
+				expected: expected
+			};
+
+		message = escapeInnerText( message ) || ( result ? "okay" : "failed" );
+		message = "<span class='test-message'>" + message + "</span>";
+		output = message;
+
+		if ( !result ) {
+			expected = escapeInnerText( QUnit.jsDump.parse(expected) );
+			actual = escapeInnerText( QUnit.jsDump.parse(actual) );
+			output += "<table><tr class='test-expected'><th>Expected: </th><td><pre>" + expected + "</pre></td></tr>";
+
+			if ( actual != expected ) {
+				output += "<tr class='test-actual'><th>Result: </th><td><pre>" + actual + "</pre></td></tr>";
+				output += "<tr class='test-diff'><th>Diff: </th><td><pre>" + QUnit.diff( expected, actual ) + "</pre></td></tr>";
+			}
+
+			source = sourceFromStacktrace();
+
+			if ( source ) {
+				details.source = source;
+				output += "<tr class='test-source'><th>Source: </th><td><pre>" + escapeInnerText( source ) + "</pre></td></tr>";
+			}
+
+			output += "</table>";
+		}
+
+		runLoggingCallbacks( "log", QUnit, details );
+
+		config.current.assertions.push({
+			result: !!result,
+			message: output
+		});
+	},
+
+	pushFailure: function( message, source ) {
+		var output,
+			details = {
+				result: false,
+				message: message
+			};
+
+		message = escapeInnerText(message ) || "error";
+		message = "<span class='test-message'>" + message + "</span>";
+		output = message;
+
+		if ( source ) {
+			details.source = source;
+			output += "<table><tr class='test-source'><th>Source: </th><td><pre>" + escapeInnerText( source ) + "</pre></td></tr></table>";
+		}
+
+		runLoggingCallbacks( "log", QUnit, details );
+
+		config.current.assertions.push({
+			result: false,
+			message: output
+		});
+	},
+
+	url: function( params ) {
+		params = extend( extend( {}, QUnit.urlParams ), params );
+		var key,
+			querystring = "?";
+
+		for ( key in params ) {
+			if ( !hasOwn.call( params, key ) ) {
+				continue;
+			}
+			querystring += encodeURIComponent( key ) + "=" +
+				encodeURIComponent( params[ key ] ) + "&";
+		}
+		return window.location.pathname + querystring.slice( 0, -1 );
+	},
+
+	extend: extend,
+	id: id,
+	addEvent: addEvent
+	// load, equiv, jsDump, diff: Attached later
+});
+
+/**
+ * @deprecated: Created for backwards compatibility with test runner that set the hook function
+ * into QUnit.{hook}, instead of invoking it and passing the hook function.
+ * QUnit.constructor is set to the empty F() above so that we can add to it's prototype here.
+ * Doing this allows us to tell if the following methods have been overwritten on the actual
+ * QUnit object.
+ */
+extend( QUnit.constructor.prototype, {
+
+	// Logging callbacks; all receive a single argument with the listed properties
+	// run test/logs.html for any related changes
+	begin: registerLoggingCallback( "begin" ),
+
+	// done: { failed, passed, total, runtime }
+	done: registerLoggingCallback( "done" ),
+
+	// log: { result, actual, expected, message }
+	log: registerLoggingCallback( "log" ),
+
+	// testStart: { name }
+	testStart: registerLoggingCallback( "testStart" ),
+
+	// testDone: { name, failed, passed, total }
+	testDone: registerLoggingCallback( "testDone" ),
+
+	// moduleStart: { name }
+	moduleStart: registerLoggingCallback( "moduleStart" ),
+
+	// moduleDone: { name, failed, passed, total }
+	moduleDone: registerLoggingCallback( "moduleDone" )
+});
+
+if ( typeof document === "undefined" || document.readyState === "complete" ) {
+	config.autorun = true;
+}
+
+QUnit.load = function() {
+	runLoggingCallbacks( "begin", QUnit, {} );
+
+	// Initialize the config, saving the execution queue
+	var banner, filter, i, label, len, main, ol, toolbar, userAgent, val,
+		urlConfigHtml = "",
+		oldconfig = extend( {}, config );
+
+	QUnit.init();
+	extend(config, oldconfig);
+
+	config.blocking = false;
+
+	len = config.urlConfig.length;
+
+	for ( i = 0; i < len; i++ ) {
+		val = config.urlConfig[i];
+		config[val] = QUnit.urlParams[val];
+		urlConfigHtml += "<label><input name='" + val + "' type='checkbox'" + ( config[val] ? " checked='checked'" : "" ) + ">" + val + "</label>";
+	}
+
+	// `userAgent` initialized at top of scope
+	userAgent = id( "qunit-userAgent" );
+	if ( userAgent ) {
+		userAgent.innerHTML = navigator.userAgent;
+	}
+
+	// `banner` initialized at top of scope
+	banner = id( "qunit-header" );
+	if ( banner ) {
+		banner.innerHTML = "<a href='" + QUnit.url({ filter: undefined }) + "'>" + banner.innerHTML + "</a> " + urlConfigHtml;
+		addEvent( banner, "change", function( event ) {
+			var params = {};
+			params[ event.target.name ] = event.target.checked ? true : undefined;
+			window.location = QUnit.url( params );
+		});
+	}
+
+	// `toolbar` initialized at top of scope
+	toolbar = id( "qunit-testrunner-toolbar" );
+	if ( toolbar ) {
+		// `filter` initialized at top of scope
+		filter = document.createElement( "input" );
+		filter.type = "checkbox";
+		filter.id = "qunit-filter-pass";
+
+		addEvent( filter, "click", function() {
+			var tmp,
+				ol = document.getElementById( "qunit-tests" );
+
+			if ( filter.checked ) {
+				ol.className = ol.className + " hidepass";
+			} else {
+				tmp = " " + ol.className.replace( /[\n\t\r]/g, " " ) + " ";
+				ol.className = tmp.replace( / hidepass /, " " );
+			}
+			if ( defined.sessionStorage ) {
+				if (filter.checked) {
+					sessionStorage.setItem( "qunit-filter-passed-tests", "true" );
+				} else {
+					sessionStorage.removeItem( "qunit-filter-passed-tests" );
+				}
+			}
+		});
+
+		if ( config.hidepassed || defined.sessionStorage && sessionStorage.getItem( "qunit-filter-passed-tests" ) ) {
+			filter.checked = true;
+			// `ol` initialized at top of scope
+			ol = document.getElementById( "qunit-tests" );
+			ol.className = ol.className + " hidepass";
+		}
+		toolbar.appendChild( filter );
+
+		// `label` initialized at top of scope
+		label = document.createElement( "label" );
+		label.setAttribute( "for", "qunit-filter-pass" );
+		label.innerHTML = "Hide passed tests";
+		toolbar.appendChild( label );
+	}
+
+	// `main` initialized at top of scope
+	main = id( "qunit-fixture" );
+	if ( main ) {
+		config.fixture = main.innerHTML;
+	}
+
+	if ( config.autostart ) {
+		QUnit.start();
+	}
+};
+
+addEvent( window, "load", QUnit.load );
+
+// addEvent(window, "error" ) gives us a useless event object
+window.onerror = function( message, file, line ) {
+	if ( QUnit.config.current ) {
+		QUnit.pushFailure( message, file + ":" + line );
+	} else {
+		QUnit.test( "global failure", function() {
+			QUnit.pushFailure( message, file + ":" + line );
+		});
+	}
+};
+
+function done() {
+	config.autorun = true;
+
+	// Log the last module results
+	if ( config.currentModule ) {
+		runLoggingCallbacks( "moduleDone", QUnit, {
+			name: config.currentModule,
+			failed: config.moduleStats.bad,
+			passed: config.moduleStats.all - config.moduleStats.bad,
+			total: config.moduleStats.all
+		});
+	}
+
+	var i, key,
+		banner = id( "qunit-banner" ),
+		tests = id( "qunit-tests" ),
+		runtime = +new Date() - config.started,
+		passed = config.stats.all - config.stats.bad,
+		html = [
+			"Tests completed in ",
+			runtime,
+			" milliseconds.<br/>",
+			"<span class='passed'>",
+			passed,
+			"</span> tests of <span class='total'>",
+			config.stats.all,
+			"</span> passed, <span class='failed'>",
+			config.stats.bad,
+			"</span> failed."
+		].join( "" );
+
+	if ( banner ) {
+		banner.className = ( config.stats.bad ? "qunit-fail" : "qunit-pass" );
+	}
+
+	if ( tests ) {
+		id( "qunit-testresult" ).innerHTML = html;
+	}
+
+	if ( config.altertitle && typeof document !== "undefined" && document.title ) {
+		// show ✖ for good, ✔ for bad suite result in title
+		// use escape sequences in case file gets loaded with non-utf-8-charset
+		document.title = [
+			( config.stats.bad ? "\u2716" : "\u2714" ),
+			document.title.replace( /^[\u2714\u2716] /i, "" )
+		].join( " " );
+	}
+
+	// clear own sessionStorage items if all tests passed
+	if ( config.reorder && defined.sessionStorage && config.stats.bad === 0 ) {
+		// `key` & `i` initialized at top of scope
+		for ( i = 0; i < sessionStorage.length; i++ ) {
+			key = sessionStorage.key( i++ );
+			if ( key.indexOf( "qunit-test-" ) === 0 ) {
+				sessionStorage.removeItem( key );
+			}
+		}
+	}
+
+	runLoggingCallbacks( "done", QUnit, {
+		failed: config.stats.bad,
+		passed: passed,
+		total: config.stats.all,
+		runtime: runtime
+	});
+}
+
+function validTest( test ) {
+	var include,
+		filter = config.filter,
+		fullName = test.module + ": " + test.testName;
+
+	if ( config.testNumber ) {
+		return test.testNumber === config.testNumber;
+	}
+
+	if ( !filter ) {
+		return true;
+	}
+
+	include = filter.charAt( 0 ) !== "!";
+	if ( !include ) {
+		filter = filter.slice( 1 );
+	}
+
+	// If the filter matches, we need to honour include
+	if ( fullName.indexOf( filter ) !== -1 ) {
+		return include;
+	}
+
+	// Otherwise, do the opposite
+	return !include;
+}
+
+// so far supports only Firefox, Chrome and Opera (buggy), Safari (for real exceptions)
+// Later Safari and IE10 are supposed to support error.stack as well
+// See also https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Error/Stack
+function extractStacktrace( e, offset ) {
+	offset = offset || 3;
+
+	var stack;
+
+	if ( e.stacktrace ) {
+		// Opera
+		return e.stacktrace.split( "\n" )[ offset + 3 ];
+	} else if ( e.stack ) {
+		// Firefox, Chrome
+		stack = e.stack.split( "\n" );
+		if (/^error$/i.test( stack[0] ) ) {
+			stack.shift();
+		}
+		return stack[ offset ];
+	} else if ( e.sourceURL ) {
+		// Safari, PhantomJS
+		// hopefully one day Safari provides actual stacktraces
+		// exclude useless self-reference for generated Error objects
+		if ( /qunit.js$/.test( e.sourceURL ) ) {
+			return;
+		}
+		// for actual exceptions, this is useful
+		return e.sourceURL + ":" + e.line;
+	}
+}
+function sourceFromStacktrace( offset ) {
+	try {
+		throw new Error();
+	} catch ( e ) {
+		return extractStacktrace( e, offset );
+	}
+}
+
+function escapeInnerText( s ) {
+	if ( !s ) {
+		return "";
+	}
+	s = s + "";
+	return s.replace( /[\&<>]/g, function( s ) {
+		switch( s ) {
+			case "&": return "&amp;";
+			case "<": return "&lt;";
+			case ">": return "&gt;";
+			default: return s;
+		}
+	});
+}
+
+function synchronize( callback, last ) {
+	config.queue.push( callback );
+
+	if ( config.autorun && !config.blocking ) {
+		process( last );
+	}
+}
+
+function process( last ) {
+	function next() {
+		process( last );
+	}
+	var start = new Date().getTime();
+	config.depth = config.depth ? config.depth + 1 : 1;
+
+	while ( config.queue.length && !config.blocking ) {
+		if ( !defined.setTimeout || config.updateRate <= 0 || ( ( new Date().getTime() - start ) < config.updateRate ) ) {
+			config.queue.shift()();
+		} else {
+			window.setTimeout( next, 13 );
+			break;
+		}
+	}
+	config.depth--;
+	if ( last && !config.blocking && !config.queue.length && config.depth === 0 ) {
+		done();
+	}
+}
+
+function saveGlobal() {
+	config.pollution = [];
+
+	if ( config.noglobals ) {
+		for ( var key in window ) {
+			// in Opera sometimes DOM element ids show up here, ignore them
+			if ( !hasOwn.call( window, key ) || /^qunit-test-output/.test( key ) ) {
+				continue;
+			}
+			config.pollution.push( key );
+		}
+	}
+}
+
+function checkPollution( name ) {
+	var newGlobals,
+		deletedGlobals,
+		old = config.pollution;
+
+	saveGlobal();
+
+	newGlobals = diff( config.pollution, old );
+	if ( newGlobals.length > 0 ) {
+		QUnit.pushFailure( "Introduced global variable(s): " + newGlobals.join(", ") );
+	}
+
+	deletedGlobals = diff( old, config.pollution );
+	if ( deletedGlobals.length > 0 ) {
+		QUnit.pushFailure( "Deleted global variable(s): " + deletedGlobals.join(", ") );
+	}
+}
+
+// returns a new Array with the elements that are in a but not in b
+function diff( a, b ) {
+	var i, j,
+		result = a.slice();
+
+	for ( i = 0; i < result.length; i++ ) {
+		for ( j = 0; j < b.length; j++ ) {
+			if ( result[i] === b[j] ) {
+				result.splice( i, 1 );
+				i--;
+				break;
+			}
+		}
+	}
+	return result;
+}
+
+function extend( a, b ) {
+	for ( var prop in b ) {
+		if ( b[ prop ] === undefined ) {
+			delete a[ prop ];
+
+		// Avoid "Member not found" error in IE8 caused by setting window.constructor
+		} else if ( prop !== "constructor" || a !== window ) {
+			a[ prop ] = b[ prop ];
+		}
+	}
+
+	return a;
+}
+
+function addEvent( elem, type, fn ) {
+	if ( elem.addEventListener ) {
+		elem.addEventListener( type, fn, false );
+	} else if ( elem.attachEvent ) {
+		elem.attachEvent( "on" + type, fn );
+	} else {
+		fn();
+	}
+}
+
+function id( name ) {
+	return !!( typeof document !== "undefined" && document && document.getElementById ) &&
+		document.getElementById( name );
+}
+
+function registerLoggingCallback( key ) {
+	return function( callback ) {
+		config[key].push( callback );
+	};
+}
+
+// Supports deprecated method of completely overwriting logging callbacks
+function runLoggingCallbacks( key, scope, args ) {
+	//debugger;
+	var i, callbacks;
+	if ( QUnit.hasOwnProperty( key ) ) {
+		QUnit[ key ].call(scope, args );
+	} else {
+		callbacks = config[ key ];
+		for ( i = 0; i < callbacks.length; i++ ) {
+			callbacks[ i ].call( scope, args );
+		}
+	}
+}
+
+// Test for equality any JavaScript type.
+// Author: Philippe Rathé <prathe@gmail.com>
+QUnit.equiv = (function() {
+
+	// Call the o related callback with the given arguments.
+	function bindCallbacks( o, callbacks, args ) {
+		var prop = QUnit.objectType( o );
+		if ( prop ) {
+			if ( QUnit.objectType( callbacks[ prop ] ) === "function" ) {
+				return callbacks[ prop ].apply( callbacks, args );
+			} else {
+				return callbacks[ prop ]; // or undefined
+			}
+		}
+	}
+
+	// the real equiv function
+	var innerEquiv,
+		// stack to decide between skip/abort functions
+		callers = [],
+		// stack to avoiding loops from circular referencing
+		parents = [],
+
+		getProto = Object.getPrototypeOf || function ( obj ) {
+			return obj.__proto__;
+		},
+		callbacks = (function () {
+
+			// for string, boolean, number and null
+			function useStrictEquality( b, a ) {
+				if ( b instanceof a.constructor || a instanceof b.constructor ) {
+					// to catch short annotaion VS 'new' annotation of a
+					// declaration
+					// e.g. var i = 1;
+					// var j = new Number(1);
+					return a == b;
+				} else {
+					return a === b;
+				}
+			}
+
+			return {
+				"string": useStrictEquality,
+				"boolean": useStrictEquality,
+				"number": useStrictEquality,
+				"null": useStrictEquality,
+				"undefined": useStrictEquality,
+
+				"nan": function( b ) {
+					return isNaN( b );
+				},
+
+				"date": function( b, a ) {
+					return QUnit.objectType( b ) === "date" && a.valueOf() === b.valueOf();
+				},
+
+				"regexp": function( b, a ) {
+					return QUnit.objectType( b ) === "regexp" &&
+						// the regex itself
+						a.source === b.source &&
+						// and its modifers
+						a.global === b.global &&
+						// (gmi) ...
+						a.ignoreCase === b.ignoreCase &&
+						a.multiline === b.multiline;
+				},
+
+				// - skip when the property is a method of an instance (OOP)
+				// - abort otherwise,
+				// initial === would have catch identical references anyway
+				"function": function() {
+					var caller = callers[callers.length - 1];
+					return caller !== Object && typeof caller !== "undefined";
+				},
+
+				"array": function( b, a ) {
+					var i, j, len, loop;
+
+					// b could be an object literal here
+					if ( QUnit.objectType( b ) !== "array" ) {
+						return false;
+					}
+
+					len = a.length;
+					if ( len !== b.length ) {
+						// safe and faster
+						return false;
+					}
+
+					// track reference to avoid circular references
+					parents.push( a );
+					for ( i = 0; i < len; i++ ) {
+						loop = false;
+						for ( j = 0; j < parents.length; j++ ) {
+							if ( parents[j] === a[i] ) {
+								loop = true;// dont rewalk array
+							}
+						}
+						if ( !loop && !innerEquiv(a[i], b[i]) ) {
+							parents.pop();
+							return false;
+						}
+					}
+					parents.pop();
+					return true;
+				},
+
+				"object": function( b, a ) {
+					var i, j, loop,
+						// Default to true
+						eq = true,
+						aProperties = [],
+						bProperties = [];
+
+          /*****************
+           * HACK: Disable this code, it won't do well when comparing objects
+           * from different scopes (different prototypes).
+
+					// comparing constructors is more strict than using
+					// instanceof
+					if ( a.constructor !== b.constructor ) {
+						// Allow objects with no prototype to be equivalent to
+						// objects with Object as their constructor.
+						if ( !(( getProto(a) === null && getProto(b) === Object.prototype ) ||
+							( getProto(b) === null && getProto(a) === Object.prototype ) ) ) {
+								return false;
+						}
+					}
+          *****************/
+
+					// stack constructor before traversing properties
+					callers.push( a.constructor );
+					// track reference to avoid circular references
+					parents.push( a );
+
+					for ( i in a ) { // be strict: don't ensures hasOwnProperty
+									// and go deep
+						loop = false;
+						for ( j = 0; j < parents.length; j++ ) {
+							if ( parents[j] === a[i] ) {
+								// don't go down the same path twice
+								loop = true;
+							}
+						}
+						aProperties.push(i); // collect a's properties
+
+						if (!loop && !innerEquiv( a[i], b[i] ) ) {
+							eq = false;
+							break;
+						}
+					}
+
+					callers.pop(); // unstack, we are done
+					parents.pop();
+
+					for ( i in b ) {
+						bProperties.push( i ); // collect b's properties
+					}
+
+					// Ensures identical properties name
+					return eq && innerEquiv( aProperties.sort(), bProperties.sort() );
+				}
+			};
+		}());
+
+	innerEquiv = function() { // can take multiple arguments
+		var args = [].slice.apply( arguments );
+		if ( args.length < 2 ) {
+			return true; // end transition
+		}
+
+		return (function( a, b ) {
+			if ( a === b ) {
+				return true; // catch the most you can
+			} else if ( a === null || b === null || typeof a === "undefined" ||
+					typeof b === "undefined" ||
+					QUnit.objectType(a) !== QUnit.objectType(b) ) {
+				return false; // don't lose time with error prone cases
+			} else {
+				return bindCallbacks(a, callbacks, [ b, a ]);
+			}
+
+			// apply transition with (1..n) arguments
+		}( args[0], args[1] ) && arguments.callee.apply( this, args.splice(1, args.length - 1 )) );
+	};
+
+	return innerEquiv;
+}());
+
+/**
+ * jsDump Copyright (c) 2008 Ariel Flesler - aflesler(at)gmail(dot)com |
+ * http://flesler.blogspot.com Licensed under BSD
+ * (http://www.opensource.org/licenses/bsd-license.php) Date: 5/15/2008
+ *
+ * @projectDescription Advanced and extensible data dumping for Javascript.
+ * @version 1.0.0
+ * @author Ariel Flesler
+ * @link {http://flesler.blogspot.com/2008/05/jsdump-pretty-dump-of-any-javascript.html}
+ */
+QUnit.jsDump = (function() {
+	function quote( str ) {
+		return '"' + str.toString().replace( /"/g, '\\"' ) + '"';
+	}
+	function literal( o ) {
+		return o + "";
+	}
+	function join( pre, arr, post ) {
+		var s = jsDump.separator(),
+			base = jsDump.indent(),
+			inner = jsDump.indent(1);
+		if ( arr.join ) {
+			arr = arr.join( "," + s + inner );
+		}
+		if ( !arr ) {
+			return pre + post;
+		}
+		return [ pre, inner + arr, base + post ].join(s);
+	}
+	function array( arr, stack ) {
+		var i = arr.length, ret = new Array(i);
+		this.up();
+		while ( i-- ) {
+			ret[i] = this.parse( arr[i] , undefined , stack);
+		}
+		this.down();
+		return join( "[", ret, "]" );
+	}
+
+	var reName = /^function (\w+)/,
+		jsDump = {
+			parse: function( obj, type, stack ) { //type is used mostly internally, you can fix a (custom)type in advance
+				stack = stack || [ ];
+				var inStack, res,
+					parser = this.parsers[ type || this.typeOf(obj) ];
+
+				type = typeof parser;
+				inStack = inArray( obj, stack );
+
+				if ( inStack != -1 ) {
+					return "recursion(" + (inStack - stack.length) + ")";
+				}
+				//else
+				if ( type == "function" )  {
+					stack.push( obj );
+					res = parser.call( this, obj, stack );
+					stack.pop();
+					return res;
+				}
+				// else
+				return ( type == "string" ) ? parser : this.parsers.error;
+			},
+			typeOf: function( obj ) {
+				var type;
+				if ( obj === null ) {
+					type = "null";
+				} else if ( typeof obj === "undefined" ) {
+					type = "undefined";
+				} else if ( QUnit.is( "RegExp", obj) ) {
+					type = "regexp";
+				} else if ( QUnit.is( "Date", obj) ) {
+					type = "date";
+				} else if ( QUnit.is( "Function", obj) ) {
+					type = "function";
+				} else if ( typeof obj.setInterval !== undefined && typeof obj.document !== "undefined" && typeof obj.nodeType === "undefined" ) {
+					type = "window";
+				} else if ( obj.nodeType === 9 ) {
+					type = "document";
+				} else if ( obj.nodeType ) {
+					type = "node";
+				} else if (
+					// native arrays
+					toString.call( obj ) === "[object Array]" ||
+					// NodeList objects
+					( typeof obj.length === "number" && typeof obj.item !== "undefined" && ( obj.length ? obj.item(0) === obj[0] : ( obj.item( 0 ) === null && typeof obj[0] === "undefined" ) ) )
+				) {
+					type = "array";
+				} else {
+					type = typeof obj;
+				}
+				return type;
+			},
+			separator: function() {
+				return this.multiline ?	this.HTML ? "<br />" : "\n" : this.HTML ? "&nbsp;" : " ";
+			},
+			indent: function( extra ) {// extra can be a number, shortcut for increasing-calling-decreasing
+				if ( !this.multiline ) {
+					return "";
+				}
+				var chr = this.indentChar;
+				if ( this.HTML ) {
+					chr = chr.replace( /\t/g, "   " ).replace( / /g, "&nbsp;" );
+				}
+				return new Array( this._depth_ + (extra||0) ).join(chr);
+			},
+			up: function( a ) {
+				this._depth_ += a || 1;
+			},
+			down: function( a ) {
+				this._depth_ -= a || 1;
+			},
+			setParser: function( name, parser ) {
+				this.parsers[name] = parser;
+			},
+			// The next 3 are exposed so you can use them
+			quote: quote,
+			literal: literal,
+			join: join,
+			//
+			_depth_: 1,
+			// This is the list of parsers, to modify them, use jsDump.setParser
+			parsers: {
+				window: "[Window]",
+				document: "[Document]",
+				error: "[ERROR]", //when no parser is found, shouldn"t happen
+				unknown: "[Unknown]",
+				"null": "null",
+				"undefined": "undefined",
+				"function": function( fn ) {
+					var ret = "function",
+						name = "name" in fn ? fn.name : (reName.exec(fn) || [])[1];//functions never have name in IE
+
+					if ( name ) {
+						ret += " " + name;
+					}
+					ret += "( ";
+
+					ret = [ ret, QUnit.jsDump.parse( fn, "functionArgs" ), "){" ].join( "" );
+					return join( ret, QUnit.jsDump.parse(fn,"functionCode" ), "}" );
+				},
+				array: array,
+				nodelist: array,
+				"arguments": array,
+				object: function( map, stack ) {
+					var ret = [ ], keys, key, val, i;
+					QUnit.jsDump.up();
+					if ( Object.keys ) {
+						keys = Object.keys( map );
+					} else {
+						keys = [];
+						for ( key in map ) {
+							keys.push( key );
+						}
+					}
+					keys.sort();
+					for ( i = 0; i < keys.length; i++ ) {
+						key = keys[ i ];
+						val = map[ key ];
+						ret.push( QUnit.jsDump.parse( key, "key" ) + ": " + QUnit.jsDump.parse( val, undefined, stack ) );
+					}
+					QUnit.jsDump.down();
+					return join( "{", ret, "}" );
+				},
+				node: function( node ) {
+					var a, val,
+						open = QUnit.jsDump.HTML ? "&lt;" : "<",
+						close = QUnit.jsDump.HTML ? "&gt;" : ">",
+						tag = node.nodeName.toLowerCase(),
+						ret = open + tag;
+
+					for ( a in QUnit.jsDump.DOMAttrs ) {
+						val = node[ QUnit.jsDump.DOMAttrs[a] ];
+						if ( val ) {
+							ret += " " + a + "=" + QUnit.jsDump.parse( val, "attribute" );
+						}
+					}
+					return ret + close + open + "/" + tag + close;
+				},
+				functionArgs: function( fn ) {//function calls it internally, it's the arguments part of the function
+					var args,
+						l = fn.length;
+
+					if ( !l ) {
+						return "";
+					}
+
+					args = new Array(l);
+					while ( l-- ) {
+						args[l] = String.fromCharCode(97+l);//97 is 'a'
+					}
+					return " " + args.join( ", " ) + " ";
+				},
+				key: quote, //object calls it internally, the key part of an item in a map
+				functionCode: "[code]", //function calls it internally, it's the content of the function
+				attribute: quote, //node calls it internally, it's an html attribute value
+				string: quote,
+				date: quote,
+				regexp: literal, //regex
+				number: literal,
+				"boolean": literal
+			},
+			DOMAttrs: {
+				//attributes to dump from nodes, name=>realName
+				id: "id",
+				name: "name",
+				"class": "className"
+			},
+			HTML: false,//if true, entities are escaped ( <, >, \t, space and \n )
+			indentChar: "  ",//indentation unit
+			multiline: true //if true, items in a collection, are separated by a \n, else just a space.
+		};
+
+	return jsDump;
+}());
+
+// from Sizzle.js
+function getText( elems ) {
+	var i, elem,
+		ret = "";
+
+	for ( i = 0; elems[i]; i++ ) {
+		elem = elems[i];
+
+		// Get the text from text nodes and CDATA nodes
+		if ( elem.nodeType === 3 || elem.nodeType === 4 ) {
+			ret += elem.nodeValue;
+
+		// Traverse everything else, except comment nodes
+		} else if ( elem.nodeType !== 8 ) {
+			ret += getText( elem.childNodes );
+		}
+	}
+
+	return ret;
+}
+
+// from jquery.js
+function inArray( elem, array ) {
+	if ( array.indexOf ) {
+		return array.indexOf( elem );
+	}
+
+	for ( var i = 0, length = array.length; i < length; i++ ) {
+		if ( array[ i ] === elem ) {
+			return i;
+		}
+	}
+
+	return -1;
+}
+
+/*
+ * Javascript Diff Algorithm
+ *  By John Resig (http://ejohn.org/)
+ *  Modified by Chu Alan "sprite"
+ *
+ * Released under the MIT license.
+ *
+ * More Info:
+ *  http://ejohn.org/projects/javascript-diff-algorithm/
+ *
+ * Usage: QUnit.diff(expected, actual)
+ *
+ * QUnit.diff( "the quick brown fox jumped over", "the quick fox jumps over" ) == "the  quick <del>brown </del> fox <del>jumped </del><ins>jumps </ins> over"
+ */
+QUnit.diff = (function() {
+	function diff( o, n ) {
+		var i,
+			ns = {},
+			os = {};
+
+		for ( i = 0; i < n.length; i++ ) {
+			if ( ns[ n[i] ] == null ) {
+				ns[ n[i] ] = {
+					rows: [],
+					o: null
+				};
+			}
+			ns[ n[i] ].rows.push( i );
+		}
+
+		for ( i = 0; i < o.length; i++ ) {
+			if ( os[ o[i] ] == null ) {
+				os[ o[i] ] = {
+					rows: [],
+					n: null
+				};
+			}
+			os[ o[i] ].rows.push( i );
+		}
+
+		for ( i in ns ) {
+			if ( !hasOwn.call( ns, i ) ) {
+				continue;
+			}
+			if ( ns[i].rows.length == 1 && typeof os[i] != "undefined" && os[i].rows.length == 1 ) {
+				n[ ns[i].rows[0] ] = {
+					text: n[ ns[i].rows[0] ],
+					row: os[i].rows[0]
+				};
+				o[ os[i].rows[0] ] = {
+					text: o[ os[i].rows[0] ],
+					row: ns[i].rows[0]
+				};
+			}
+		}
+
+		for ( i = 0; i < n.length - 1; i++ ) {
+			if ( n[i].text != null && n[ i + 1 ].text == null && n[i].row + 1 < o.length && o[ n[i].row + 1 ].text == null &&
+						n[ i + 1 ] == o[ n[i].row + 1 ] ) {
+
+				n[ i + 1 ] = {
+					text: n[ i + 1 ],
+					row: n[i].row + 1
+				};
+				o[ n[i].row + 1 ] = {
+					text: o[ n[i].row + 1 ],
+					row: i + 1
+				};
+			}
+		}
+
+		for ( i = n.length - 1; i > 0; i-- ) {
+			if ( n[i].text != null && n[ i - 1 ].text == null && n[i].row > 0 && o[ n[i].row - 1 ].text == null &&
+						n[ i - 1 ] == o[ n[i].row - 1 ]) {
+
+				n[ i - 1 ] = {
+					text: n[ i - 1 ],
+					row: n[i].row - 1
+				};
+				o[ n[i].row - 1 ] = {
+					text: o[ n[i].row - 1 ],
+					row: i - 1
+				};
+			}
+		}
+
+		return {
+			o: o,
+			n: n
+		};
+	}
+
+	return function( o, n ) {
+		o = o.replace( /\s+$/, "" );
+		n = n.replace( /\s+$/, "" );
+
+		var i, pre,
+			str = "",
+			out = diff( o === "" ? [] : o.split(/\s+/), n === "" ? [] : n.split(/\s+/) ),
+			oSpace = o.match(/\s+/g),
+			nSpace = n.match(/\s+/g);
+
+		if ( oSpace == null ) {
+			oSpace = [ " " ];
+		}
+		else {
+			oSpace.push( " " );
+		}
+
+		if ( nSpace == null ) {
+			nSpace = [ " " ];
+		}
+		else {
+			nSpace.push( " " );
+		}
+
+		if ( out.n.length === 0 ) {
+			for ( i = 0; i < out.o.length; i++ ) {
+				str += "<del>" + out.o[i] + oSpace[i] + "</del>";
+			}
+		}
+		else {
+			if ( out.n[0].text == null ) {
+				for ( n = 0; n < out.o.length && out.o[n].text == null; n++ ) {
+					str += "<del>" + out.o[n] + oSpace[n] + "</del>";
+				}
+			}
+
+			for ( i = 0; i < out.n.length; i++ ) {
+				if (out.n[i].text == null) {
+					str += "<ins>" + out.n[i] + nSpace[i] + "</ins>";
+				}
+				else {
+					// `pre` initialized at top of scope
+					pre = "";
+
+					for ( n = out.n[i].row + 1; n < out.o.length && out.o[n].text == null; n++ ) {
+						pre += "<del>" + out.o[n] + oSpace[n] + "</del>";
+					}
+					str += " " + out.n[i].text + nSpace[i] + pre;
+				}
+			}
+		}
+
+		return str;
+	};
+}());
+
+// for CommonJS enviroments, export everything
+if ( typeof exports !== "undefined" ) {
+	extend(exports, QUnit);
+}
+
+// get at whatever the global object is, like window in browsers
+}( (function() {return this;}.call()) ));