From 6560cb5546b69cc7843c650bfdc920a2bf440c67 Mon Sep 17 00:00:00 2001
From: Takuto Wada <takuto.wada@gmail.com>
Date: Thu, 21 Apr 2016 01:45:04 +0900
Subject: [PATCH] test(qunit-tap): add QUnit 1.23.1 to test suite

---
 test/compatibility/1.23.1/qunit.js  | 4334 +++++++++++++++++++++++++++
 test/compatibility/stable/qunit.css |    4 +-
 test/compatibility/stable/qunit.js  |   12 +-
 3 files changed, 4342 insertions(+), 8 deletions(-)
 create mode 100644 test/compatibility/1.23.1/qunit.js

diff --git a/test/compatibility/1.23.1/qunit.js b/test/compatibility/1.23.1/qunit.js
new file mode 100644
index 0000000..5df0822
--- /dev/null
+++ b/test/compatibility/1.23.1/qunit.js
@@ -0,0 +1,4334 @@
+/*!
+ * QUnit 1.23.1
+ * https://qunitjs.com/
+ *
+ * Copyright jQuery Foundation and other contributors
+ * Released under the MIT license
+ * https://jquery.org/license
+ *
+ * Date: 2016-04-12T17:29Z
+ */
+
+( function( global ) {
+
+var QUnit = {};
+
+var Date = global.Date;
+var now = Date.now || function() {
+	return new Date().getTime();
+};
+
+var setTimeout = global.setTimeout;
+var clearTimeout = global.clearTimeout;
+
+// Store a local window from the global to allow direct references.
+var window = global.window;
+
+var defined = {
+	document: window && window.document !== undefined,
+	setTimeout: setTimeout !== undefined,
+	sessionStorage: ( function() {
+		var x = "qunit-test-string";
+		try {
+			sessionStorage.setItem( x, x );
+			sessionStorage.removeItem( x );
+			return true;
+		} catch ( e ) {
+			return false;
+		}
+	}() )
+};
+
+var fileName = ( sourceFromStacktrace( 0 ) || "" ).replace( /(:\d+)+\)?/, "" ).replace( /.+\//, "" );
+var globalStartCalled = false;
+var runStarted = false;
+
+var toString = Object.prototype.toString,
+	hasOwn = Object.prototype.hasOwnProperty;
+
+// 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;
+}
+
+// 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;
+}
+
+/**
+ * Makes a clone of an object using only Array or Object as base,
+ * and copies over the own enumerable properties.
+ *
+ * @param {Object} obj
+ * @return {Object} New object with only the own properties (recursively).
+ */
+function objectValues ( obj ) {
+	var key, val,
+		vals = QUnit.is( "array", obj ) ? [] : {};
+	for ( key in obj ) {
+		if ( hasOwn.call( obj, key ) ) {
+			val = obj[ key ];
+			vals[ key ] = val === Object( val ) ? objectValues( val ) : val;
+		}
+	}
+	return vals;
+}
+
+function extend( a, b, undefOnly ) {
+	for ( var prop in b ) {
+		if ( hasOwn.call( b, prop ) ) {
+
+			// Avoid "Member not found" error in IE8 caused by messing with window.constructor
+			// This block runs on every environment, so `global` is being used instead of `window`
+			// to avoid errors on node.
+			if ( prop !== "constructor" || a !== global ) {
+				if ( b[ prop ] === undefined ) {
+					delete a[ prop ];
+				} else if ( !( undefOnly && typeof a[ prop ] !== "undefined" ) ) {
+					a[ prop ] = b[ prop ];
+				}
+			}
+		}
+	}
+
+	return a;
+}
+
+function objectType( obj ) {
+	if ( typeof obj === "undefined" ) {
+		return "undefined";
+	}
+
+	// Consider: typeof null === object
+	if ( obj === null ) {
+		return "null";
+	}
+
+	var match = toString.call( obj ).match( /^\[object\s(.*)\]$/ ),
+		type = match && match[ 1 ];
+
+	switch ( type ) {
+		case "Number":
+			if ( isNaN( obj ) ) {
+				return "nan";
+			}
+			return "number";
+		case "String":
+		case "Boolean":
+		case "Array":
+		case "Set":
+		case "Map":
+		case "Date":
+		case "RegExp":
+		case "Function":
+		case "Symbol":
+			return type.toLowerCase();
+	}
+	if ( typeof obj === "object" ) {
+		return "object";
+	}
+}
+
+// Safe object type checking
+function is( type, obj ) {
+	return QUnit.objectType( obj ) === type;
+}
+
+// Doesn't support IE6 to IE9, it will return undefined on these browsers
+// See also https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Error/Stack
+function extractStacktrace( e, offset ) {
+	offset = offset === undefined ? 4 : offset;
+
+	var stack, include, i;
+
+	if ( e.stack ) {
+		stack = e.stack.split( "\n" );
+		if ( /^error$/i.test( stack[ 0 ] ) ) {
+			stack.shift();
+		}
+		if ( fileName ) {
+			include = [];
+			for ( i = offset; i < stack.length; i++ ) {
+				if ( stack[ i ].indexOf( fileName ) !== -1 ) {
+					break;
+				}
+				include.push( stack[ i ] );
+			}
+			if ( include.length ) {
+				return include.join( "\n" );
+			}
+		}
+		return stack[ offset ];
+
+	// Support: Safari <=6 only
+	} else if ( e.sourceURL ) {
+
+		// 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 ) {
+	var error = new Error();
+
+	// Support: Safari <=7 only, IE <=10 - 11 only
+	// Not all browsers generate the `stack` property for `new Error()`, see also #636
+	if ( !error.stack ) {
+		try {
+			throw error;
+		} catch ( err ) {
+			error = err;
+		}
+	}
+
+	return extractStacktrace( error, offset );
+}
+
+/**
+ * Config object: Maintain internal state
+ * Later exposed as QUnit.config
+ * `config` initialized at top of scope
+ */
+var config = {
+
+	// The queue of tests to run
+	queue: [],
+
+	// Block until document ready
+	blocking: true,
+
+	// 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,
+
+	// HTML Reporter: collapse every test except the first failing test
+	// If false, all failing tests will be expanded
+	collapse: true,
+
+	// By default, scroll to top of the page when suite is done
+	scrolltop: true,
+
+	// Depth up-to which object will be dumped
+	maxDepth: 5,
+
+	// When enabled, all tests must call expect()
+	requireExpects: false,
+
+	// Placeholder for user-configurable form-exposed URL parameters
+	urlConfig: [],
+
+	// Set of all modules.
+	modules: [],
+
+	// Stack of nested modules
+	moduleStack: [],
+
+	// The first unnamed module
+	currentModule: {
+		name: "",
+		tests: []
+	},
+
+	callbacks: {}
+};
+
+// Push a loose unnamed module to the modules collection
+config.modules.push( config.currentModule );
+
+var loggingCallbacks = {};
+
+// Register logging callbacks
+function registerLoggingCallbacks( obj ) {
+	var i, l, key,
+		callbackNames = [ "begin", "done", "log", "testStart", "testDone",
+			"moduleStart", "moduleDone" ];
+
+	function registerLoggingCallback( key ) {
+		var loggingCallback = function( callback ) {
+			if ( objectType( callback ) !== "function" ) {
+				throw new Error(
+					"QUnit logging methods require a callback function as their first parameters."
+				);
+			}
+
+			config.callbacks[ key ].push( callback );
+		};
+
+		// DEPRECATED: This will be removed on QUnit 2.0.0+
+		// Stores the registered functions allowing restoring
+		// at verifyLoggingCallbacks() if modified
+		loggingCallbacks[ key ] = loggingCallback;
+
+		return loggingCallback;
+	}
+
+	for ( i = 0, l = callbackNames.length; i < l; i++ ) {
+		key = callbackNames[ i ];
+
+		// Initialize key collection of logging callback
+		if ( objectType( config.callbacks[ key ] ) === "undefined" ) {
+			config.callbacks[ key ] = [];
+		}
+
+		obj[ key ] = registerLoggingCallback( key );
+	}
+}
+
+function runLoggingCallbacks( key, args ) {
+	var i, l, callbacks;
+
+	callbacks = config.callbacks[ key ];
+	for ( i = 0, l = callbacks.length; i < l; i++ ) {
+		callbacks[ i ]( args );
+	}
+}
+
+// DEPRECATED: This will be removed on 2.0.0+
+// This function verifies if the loggingCallbacks were modified by the user
+// If so, it will restore it, assign the given callback and print a console warning
+function verifyLoggingCallbacks() {
+	var loggingCallback, userCallback;
+
+	for ( loggingCallback in loggingCallbacks ) {
+		if ( QUnit[ loggingCallback ] !== loggingCallbacks[ loggingCallback ] ) {
+
+			userCallback = QUnit[ loggingCallback ];
+
+			// Restore the callback function
+			QUnit[ loggingCallback ] = loggingCallbacks[ loggingCallback ];
+
+			// Assign the deprecated given callback
+			QUnit[ loggingCallback ]( userCallback );
+
+			if ( global.console && global.console.warn ) {
+				global.console.warn(
+					"QUnit." + loggingCallback + " was replaced with a new value.\n" +
+					"Please, check out the documentation on how to apply logging callbacks.\n" +
+					"Reference: https://api.qunitjs.com/category/callbacks/"
+				);
+			}
+		}
+	}
+}
+
+( function() {
+	if ( !defined.document ) {
+		return;
+	}
+
+	// `onErrorFnPrev` initialized at top of scope
+	// Preserve other handlers
+	var onErrorFnPrev = window.onerror;
+
+	// Cover uncaught exceptions
+	// Returning true will suppress the default browser handler,
+	// returning false will let it run.
+	window.onerror = function( error, filePath, linerNr ) {
+		var ret = false;
+		if ( onErrorFnPrev ) {
+			ret = onErrorFnPrev( error, filePath, linerNr );
+		}
+
+		// Treat return value as window.onerror itself does,
+		// Only do our handling if not suppressed.
+		if ( ret !== true ) {
+			if ( QUnit.config.current ) {
+				if ( QUnit.config.current.ignoreGlobalErrors ) {
+					return true;
+				}
+				QUnit.pushFailure( error, filePath + ":" + linerNr );
+			} else {
+				QUnit.test( "global failure", extend( function() {
+					QUnit.pushFailure( error, filePath + ":" + linerNr );
+				}, { validTest: true } ) );
+			}
+			return false;
+		}
+
+		return ret;
+	};
+}() );
+
+// Figure out if we're running the tests from a server or not
+QUnit.isLocal = !( defined.document && window.location.protocol !== "file:" );
+
+// Expose the current QUnit version
+QUnit.version = "1.23.1";
+
+extend( QUnit, {
+
+	// Call on start of module test to prepend name to all tests
+	module: function( name, testEnvironment, executeNow ) {
+		var module, moduleFns;
+		var currentModule = config.currentModule;
+
+		if ( arguments.length === 2 ) {
+			if ( objectType( testEnvironment ) === "function" ) {
+				executeNow = testEnvironment;
+				testEnvironment = undefined;
+			}
+		}
+
+		// DEPRECATED: handles setup/teardown functions,
+		// beforeEach and afterEach should be used instead
+		if ( testEnvironment && testEnvironment.setup ) {
+			testEnvironment.beforeEach = testEnvironment.setup;
+			delete testEnvironment.setup;
+		}
+		if ( testEnvironment && testEnvironment.teardown ) {
+			testEnvironment.afterEach = testEnvironment.teardown;
+			delete testEnvironment.teardown;
+		}
+
+		module = createModule();
+
+		moduleFns = {
+			beforeEach: setHook( module, "beforeEach" ),
+			afterEach: setHook( module, "afterEach" )
+		};
+
+		if ( objectType( executeNow ) === "function" ) {
+			config.moduleStack.push( module );
+			setCurrentModule( module );
+			executeNow.call( module.testEnvironment, moduleFns );
+			config.moduleStack.pop();
+			module = module.parentModule || currentModule;
+		}
+
+		setCurrentModule( module );
+
+		function createModule() {
+			var parentModule = config.moduleStack.length ?
+				config.moduleStack.slice( -1 )[ 0 ] : null;
+			var moduleName = parentModule !== null ?
+				[ parentModule.name, name ].join( " > " ) : name;
+			var module = {
+				name: moduleName,
+				parentModule: parentModule,
+				tests: [],
+				moduleId: generateHash( moduleName )
+			};
+
+			var env = {};
+			if ( parentModule ) {
+				extend( env, parentModule.testEnvironment );
+				delete env.beforeEach;
+				delete env.afterEach;
+			}
+			extend( env, testEnvironment );
+			module.testEnvironment = env;
+
+			config.modules.push( module );
+			return module;
+		}
+
+		function setCurrentModule( module ) {
+			config.currentModule = module;
+		}
+
+	},
+
+	// DEPRECATED: QUnit.asyncTest() will be removed in QUnit 2.0.
+	asyncTest: asyncTest,
+
+	test: test,
+
+	skip: skip,
+
+	only: only,
+
+	// DEPRECATED: The functionality of QUnit.start() will be altered in QUnit 2.0.
+	// In QUnit 2.0, invoking it will ONLY affect the `QUnit.config.autostart` blocking behavior.
+	start: function( count ) {
+		var globalStartAlreadyCalled = globalStartCalled;
+
+		if ( !config.current ) {
+			globalStartCalled = true;
+
+			if ( runStarted ) {
+				throw new Error( "Called start() outside of a test context while already started" );
+			} else if ( globalStartAlreadyCalled || count > 1 ) {
+				throw new Error( "Called start() outside of a test context too many times" );
+			} else if ( config.autostart ) {
+				throw new Error( "Called start() outside of a test context when " +
+					"QUnit.config.autostart was true" );
+			} else if ( !config.pageLoaded ) {
+
+				// The page isn't completely loaded yet, so bail out and let `QUnit.load` handle it
+				config.autostart = true;
+				return;
+			}
+		} else {
+
+			// If a test is running, adjust its semaphore
+			config.current.semaphore -= count || 1;
+
+			// If semaphore is non-numeric, throw error
+			if ( isNaN( config.current.semaphore ) ) {
+				config.current.semaphore = 0;
+
+				QUnit.pushFailure(
+					"Called start() with a non-numeric decrement.",
+					sourceFromStacktrace( 2 )
+				);
+				return;
+			}
+
+			// Don't start until equal number of stop-calls
+			if ( config.current.semaphore > 0 ) {
+				return;
+			}
+
+			// Throw an Error if start is called more often than stop
+			if ( config.current.semaphore < 0 ) {
+				config.current.semaphore = 0;
+
+				QUnit.pushFailure(
+					"Called start() while already started (test's semaphore was 0 already)",
+					sourceFromStacktrace( 2 )
+				);
+				return;
+			}
+		}
+
+		resumeProcessing();
+	},
+
+	// DEPRECATED: QUnit.stop() will be removed in QUnit 2.0.
+	stop: function( count ) {
+
+		// If there isn't a test running, don't allow QUnit.stop() to be called
+		if ( !config.current ) {
+			throw new Error( "Called stop() outside of a test context" );
+		}
+
+		// If a test is running, adjust its semaphore
+		config.current.semaphore += count || 1;
+
+		pauseProcessing();
+	},
+
+	config: config,
+
+	is: is,
+
+	objectType: objectType,
+
+	extend: extend,
+
+	load: function() {
+		config.pageLoaded = true;
+
+		// Initialize the configuration options
+		extend( config, {
+			stats: { all: 0, bad: 0 },
+			moduleStats: { all: 0, bad: 0 },
+			started: 0,
+			updateRate: 1000,
+			autostart: true,
+			filter: ""
+		}, true );
+
+		config.blocking = false;
+
+		if ( config.autostart ) {
+			resumeProcessing();
+		}
+	},
+
+	stack: function( offset ) {
+		offset = ( offset || 0 ) + 2;
+		return sourceFromStacktrace( offset );
+	}
+} );
+
+registerLoggingCallbacks( QUnit );
+
+function begin() {
+	var i, l,
+		modulesLog = [];
+
+	// If the test run hasn't officially begun yet
+	if ( !config.started ) {
+
+		// Record the time of the test run's beginning
+		config.started = now();
+
+		verifyLoggingCallbacks();
+
+		// Delete the loose unnamed module if unused.
+		if ( config.modules[ 0 ].name === "" && config.modules[ 0 ].tests.length === 0 ) {
+			config.modules.shift();
+		}
+
+		// Avoid unnecessary information by not logging modules' test environments
+		for ( i = 0, l = config.modules.length; i < l; i++ ) {
+			modulesLog.push( {
+				name: config.modules[ i ].name,
+				tests: config.modules[ i ].tests
+			} );
+		}
+
+		// The test run is officially beginning now
+		runLoggingCallbacks( "begin", {
+			totalTests: Test.count,
+			modules: modulesLog
+		} );
+	}
+
+	config.blocking = false;
+	process( true );
+}
+
+function process( last ) {
+	function next() {
+		process( last );
+	}
+	var start = now();
+	config.depth = ( config.depth || 0 ) + 1;
+
+	while ( config.queue.length && !config.blocking ) {
+		if ( !defined.setTimeout || config.updateRate <= 0 ||
+				( ( now() - start ) < config.updateRate ) ) {
+			if ( config.current ) {
+
+				// Reset async tracking for each phase of the Test lifecycle
+				config.current.usedAsync = false;
+			}
+			config.queue.shift()();
+		} else {
+			setTimeout( next, 13 );
+			break;
+		}
+	}
+	config.depth--;
+	if ( last && !config.blocking && !config.queue.length && config.depth === 0 ) {
+		done();
+	}
+}
+
+function pauseProcessing() {
+	config.blocking = true;
+
+	if ( config.testTimeout && defined.setTimeout ) {
+		clearTimeout( config.timeout );
+		config.timeout = setTimeout( function() {
+			if ( config.current ) {
+				config.current.semaphore = 0;
+				QUnit.pushFailure( "Test timed out", sourceFromStacktrace( 2 ) );
+			} else {
+				throw new Error( "Test timed out" );
+			}
+			resumeProcessing();
+		}, config.testTimeout );
+	}
+}
+
+function resumeProcessing() {
+	runStarted = true;
+
+	// A slight delay to allow this iteration of the event loop to finish (more assertions, etc.)
+	if ( defined.setTimeout ) {
+		setTimeout( function() {
+			if ( config.current && config.current.semaphore > 0 ) {
+				return;
+			}
+			if ( config.timeout ) {
+				clearTimeout( config.timeout );
+			}
+
+			begin();
+		}, 13 );
+	} else {
+		begin();
+	}
+}
+
+function done() {
+	var runtime, passed;
+
+	config.autorun = true;
+
+	// Log the last module results
+	if ( config.previousModule ) {
+		runLoggingCallbacks( "moduleDone", {
+			name: config.previousModule.name,
+			tests: config.previousModule.tests,
+			failed: config.moduleStats.bad,
+			passed: config.moduleStats.all - config.moduleStats.bad,
+			total: config.moduleStats.all,
+			runtime: now() - config.moduleStats.started
+		} );
+	}
+	delete config.previousModule;
+
+	runtime = now() - config.started;
+	passed = config.stats.all - config.stats.bad;
+
+	runLoggingCallbacks( "done", {
+		failed: config.stats.bad,
+		passed: passed,
+		total: config.stats.all,
+		runtime: runtime
+	} );
+}
+
+function setHook( module, hookName ) {
+	if ( module.testEnvironment === undefined ) {
+		module.testEnvironment = {};
+	}
+
+	return function( callback ) {
+		module.testEnvironment[ hookName ] = callback;
+	};
+}
+
+var focused = false;
+var priorityCount = 0;
+var unitSampler;
+
+function Test( settings ) {
+	var i, l;
+
+	++Test.count;
+
+	extend( this, settings );
+	this.assertions = [];
+	this.semaphore = 0;
+	this.usedAsync = false;
+	this.module = config.currentModule;
+	this.stack = sourceFromStacktrace( 3 );
+
+	// Register unique strings
+	for ( i = 0, l = this.module.tests; i < l.length; i++ ) {
+		if ( this.module.tests[ i ].name === this.testName ) {
+			this.testName += " ";
+		}
+	}
+
+	this.testId = generateHash( this.module.name, this.testName );
+
+	this.module.tests.push( {
+		name: this.testName,
+		testId: this.testId
+	} );
+
+	if ( settings.skip ) {
+
+		// Skipped tests will fully ignore any sent callback
+		this.callback = function() {};
+		this.async = false;
+		this.expected = 0;
+	} else {
+		this.assert = new Assert( this );
+	}
+}
+
+Test.count = 0;
+
+Test.prototype = {
+	before: function() {
+		if (
+
+			// Emit moduleStart when we're switching from one module to another
+			this.module !== config.previousModule ||
+
+				// They could be equal (both undefined) but if the previousModule property doesn't
+				// yet exist it means this is the first test in a suite that isn't wrapped in a
+				// module, in which case we'll just emit a moduleStart event for 'undefined'.
+				// Without this, reporters can get testStart before moduleStart  which is a problem.
+				!hasOwn.call( config, "previousModule" )
+		) {
+			if ( hasOwn.call( config, "previousModule" ) ) {
+				runLoggingCallbacks( "moduleDone", {
+					name: config.previousModule.name,
+					tests: config.previousModule.tests,
+					failed: config.moduleStats.bad,
+					passed: config.moduleStats.all - config.moduleStats.bad,
+					total: config.moduleStats.all,
+					runtime: now() - config.moduleStats.started
+				} );
+			}
+			config.previousModule = this.module;
+			config.moduleStats = { all: 0, bad: 0, started: now() };
+			runLoggingCallbacks( "moduleStart", {
+				name: this.module.name,
+				tests: this.module.tests
+			} );
+		}
+
+		config.current = this;
+
+		if ( this.module.testEnvironment ) {
+			delete this.module.testEnvironment.beforeEach;
+			delete this.module.testEnvironment.afterEach;
+		}
+		this.testEnvironment = extend( {}, this.module.testEnvironment );
+
+		this.started = now();
+		runLoggingCallbacks( "testStart", {
+			name: this.testName,
+			module: this.module.name,
+			testId: this.testId
+		} );
+
+		if ( !config.pollution ) {
+			saveGlobal();
+		}
+	},
+
+	run: function() {
+		var promise;
+
+		config.current = this;
+
+		if ( this.async ) {
+			QUnit.stop();
+		}
+
+		this.callbackStarted = now();
+
+		if ( config.notrycatch ) {
+			runTest( this );
+			return;
+		}
+
+		try {
+			runTest( this );
+		} catch ( e ) {
+			this.pushFailure( "Died on test #" + ( this.assertions.length + 1 ) + " " +
+				this.stack + ": " + ( e.message || e ), extractStacktrace( e, 0 ) );
+
+			// Else next test will carry the responsibility
+			saveGlobal();
+
+			// Restart the tests if they're blocking
+			if ( config.blocking ) {
+				QUnit.start();
+			}
+		}
+
+		function runTest( test ) {
+			promise = test.callback.call( test.testEnvironment, test.assert );
+			test.resolvePromise( promise );
+		}
+	},
+
+	after: function() {
+		checkPollution();
+	},
+
+	queueHook: function( hook, hookName ) {
+		var promise,
+			test = this;
+		return function runHook() {
+			config.current = test;
+			if ( config.notrycatch ) {
+				callHook();
+				return;
+			}
+			try {
+				callHook();
+			} catch ( error ) {
+				test.pushFailure( hookName + " failed on " + test.testName + ": " +
+				( error.message || error ), extractStacktrace( error, 0 ) );
+			}
+
+			function callHook() {
+				promise = hook.call( test.testEnvironment, test.assert );
+				test.resolvePromise( promise, hookName );
+			}
+		};
+	},
+
+	// Currently only used for module level hooks, can be used to add global level ones
+	hooks: function( handler ) {
+		var hooks = [];
+
+		function processHooks( test, module ) {
+			if ( module.parentModule ) {
+				processHooks( test, module.parentModule );
+			}
+			if ( module.testEnvironment &&
+				QUnit.objectType( module.testEnvironment[ handler ] ) === "function" ) {
+				hooks.push( test.queueHook( module.testEnvironment[ handler ], handler ) );
+			}
+		}
+
+		// Hooks are ignored on skipped tests
+		if ( !this.skip ) {
+			processHooks( this, this.module );
+		}
+		return hooks;
+	},
+
+	finish: function() {
+		config.current = this;
+		if ( config.requireExpects && this.expected === null ) {
+			this.pushFailure( "Expected number of assertions to be defined, but expect() was " +
+				"not called.", this.stack );
+		} else if ( this.expected !== null && this.expected !== this.assertions.length ) {
+			this.pushFailure( "Expected " + this.expected + " assertions, but " +
+				this.assertions.length + " were run", this.stack );
+		} else if ( this.expected === null && !this.assertions.length ) {
+			this.pushFailure( "Expected at least one assertion, but none were run - call " +
+				"expect(0) to accept zero assertions.", this.stack );
+		}
+
+		var i,
+			bad = 0;
+
+		this.runtime = now() - this.started;
+		config.stats.all += this.assertions.length;
+		config.moduleStats.all += this.assertions.length;
+
+		for ( i = 0; i < this.assertions.length; i++ ) {
+			if ( !this.assertions[ i ].result ) {
+				bad++;
+				config.stats.bad++;
+				config.moduleStats.bad++;
+			}
+		}
+
+		runLoggingCallbacks( "testDone", {
+			name: this.testName,
+			module: this.module.name,
+			skipped: !!this.skip,
+			failed: bad,
+			passed: this.assertions.length - bad,
+			total: this.assertions.length,
+			runtime: this.runtime,
+
+			// HTML Reporter use
+			assertions: this.assertions,
+			testId: this.testId,
+
+			// Source of Test
+			source: this.stack,
+
+			// DEPRECATED: this property will be removed in 2.0.0, use runtime instead
+			duration: this.runtime
+		} );
+
+		// QUnit.reset() is deprecated and will be replaced for a new
+		// fixture reset function on QUnit 2.0/2.1.
+		// It's still called here for backwards compatibility handling
+		QUnit.reset();
+
+		config.current = undefined;
+	},
+
+	queue: function() {
+		var priority,
+			test = this;
+
+		if ( !this.valid() ) {
+			return;
+		}
+
+		function run() {
+
+			// Each of these can by async
+			synchronize( [
+				function() {
+					test.before();
+				},
+
+				test.hooks( "beforeEach" ),
+				function() {
+					test.run();
+				},
+
+				test.hooks( "afterEach" ).reverse(),
+
+				function() {
+					test.after();
+				},
+				function() {
+					test.finish();
+				}
+			] );
+		}
+
+		// Prioritize previously failed tests, detected from sessionStorage
+		priority = QUnit.config.reorder && defined.sessionStorage &&
+				+sessionStorage.getItem( "qunit-test-" + this.module.name + "-" + this.testName );
+
+		return synchronize( run, priority, config.seed );
+	},
+
+	pushResult: function( resultInfo ) {
+
+		// Destructure of resultInfo = { result, actual, expected, message, negative }
+		var source,
+			details = {
+				module: this.module.name,
+				name: this.testName,
+				result: resultInfo.result,
+				message: resultInfo.message,
+				actual: resultInfo.actual,
+				expected: resultInfo.expected,
+				testId: this.testId,
+				negative: resultInfo.negative || false,
+				runtime: now() - this.started
+			};
+
+		if ( !resultInfo.result ) {
+			source = sourceFromStacktrace();
+
+			if ( source ) {
+				details.source = source;
+			}
+		}
+
+		runLoggingCallbacks( "log", details );
+
+		this.assertions.push( {
+			result: !!resultInfo.result,
+			message: resultInfo.message
+		} );
+	},
+
+	pushFailure: function( message, source, actual ) {
+		if ( !( this instanceof Test ) ) {
+			throw new Error( "pushFailure() assertion outside test context, was " +
+				sourceFromStacktrace( 2 ) );
+		}
+
+		var details = {
+				module: this.module.name,
+				name: this.testName,
+				result: false,
+				message: message || "error",
+				actual: actual || null,
+				testId: this.testId,
+				runtime: now() - this.started
+			};
+
+		if ( source ) {
+			details.source = source;
+		}
+
+		runLoggingCallbacks( "log", details );
+
+		this.assertions.push( {
+			result: false,
+			message: message
+		} );
+	},
+
+	resolvePromise: function( promise, phase ) {
+		var then, message,
+			test = this;
+		if ( promise != null ) {
+			then = promise.then;
+			if ( QUnit.objectType( then ) === "function" ) {
+				QUnit.stop();
+				then.call(
+					promise,
+					function() { QUnit.start(); },
+					function( error ) {
+						message = "Promise rejected " +
+							( !phase ? "during" : phase.replace( /Each$/, "" ) ) +
+							" " + test.testName + ": " + ( error.message || error );
+						test.pushFailure( message, extractStacktrace( error, 0 ) );
+
+						// Else next test will carry the responsibility
+						saveGlobal();
+
+						// Unblock
+						QUnit.start();
+					}
+				);
+			}
+		}
+	},
+
+	valid: function() {
+		var filter = config.filter,
+			regexFilter = /^(!?)\/([\w\W]*)\/(i?$)/.exec( filter ),
+			module = config.module && config.module.toLowerCase(),
+			fullName = ( this.module.name + ": " + this.testName );
+
+		function moduleChainNameMatch( testModule ) {
+			var testModuleName = testModule.name ? testModule.name.toLowerCase() : null;
+			if ( testModuleName === module ) {
+				return true;
+			} else if ( testModule.parentModule ) {
+				return moduleChainNameMatch( testModule.parentModule );
+			} else {
+				return false;
+			}
+		}
+
+		function moduleChainIdMatch( testModule ) {
+			return inArray( testModule.moduleId, config.moduleId ) > -1 ||
+				testModule.parentModule && moduleChainIdMatch( testModule.parentModule );
+		}
+
+		// Internally-generated tests are always valid
+		if ( this.callback && this.callback.validTest ) {
+			return true;
+		}
+
+		if ( config.moduleId && config.moduleId.length > 0 &&
+			!moduleChainIdMatch( this.module ) ) {
+
+			return false;
+		}
+
+		if ( config.testId && config.testId.length > 0 &&
+			inArray( this.testId, config.testId ) < 0 ) {
+
+			return false;
+		}
+
+		if ( module && !moduleChainNameMatch( this.module ) ) {
+			return false;
+		}
+
+		if ( !filter ) {
+			return true;
+		}
+
+		return regexFilter ?
+			this.regexFilter( !!regexFilter[ 1 ], regexFilter[ 2 ], regexFilter[ 3 ], fullName ) :
+			this.stringFilter( filter, fullName );
+	},
+
+	regexFilter: function( exclude, pattern, flags, fullName ) {
+		var regex = new RegExp( pattern, flags );
+		var match = regex.test( fullName );
+
+		return match !== exclude;
+	},
+
+	stringFilter: function( filter, fullName ) {
+		filter = filter.toLowerCase();
+		fullName = fullName.toLowerCase();
+
+		var 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;
+	}
+};
+
+// Resets the test setup. Useful for tests that modify the DOM.
+/*
+DEPRECATED: Use multiple tests instead of resetting inside a test.
+Use testStart or testDone for custom cleanup.
+This method will throw an error in 2.0, and will be removed in 2.1
+*/
+QUnit.reset = function() {
+
+	// Return on non-browser environments
+	// This is necessary to not break on node tests
+	if ( !defined.document ) {
+		return;
+	}
+
+	var fixture = defined.document && document.getElementById &&
+			document.getElementById( "qunit-fixture" );
+
+	if ( fixture ) {
+		fixture.innerHTML = config.fixture;
+	}
+};
+
+QUnit.pushFailure = function() {
+	if ( !QUnit.config.current ) {
+		throw new Error( "pushFailure() assertion outside test context, in " +
+			sourceFromStacktrace( 2 ) );
+	}
+
+	// Gets current test obj
+	var currentTest = QUnit.config.current;
+
+	return currentTest.pushFailure.apply( currentTest, arguments );
+};
+
+// Based on Java's String.hashCode, a simple but not
+// rigorously collision resistant hashing function
+function generateHash( module, testName ) {
+	var hex,
+		i = 0,
+		hash = 0,
+		str = module + "\x1C" + testName,
+		len = str.length;
+
+	for ( ; i < len; i++ ) {
+		hash  = ( ( hash << 5 ) - hash ) + str.charCodeAt( i );
+		hash |= 0;
+	}
+
+	// Convert the possibly negative integer hash code into an 8 character hex string, which isn't
+	// strictly necessary but increases user understanding that the id is a SHA-like hash
+	hex = ( 0x100000000 + hash ).toString( 16 );
+	if ( hex.length < 8 ) {
+		hex = "0000000" + hex;
+	}
+
+	return hex.slice( -8 );
+}
+
+function synchronize( callback, priority, seed ) {
+	var last = !priority,
+		index;
+
+	if ( QUnit.objectType( callback ) === "array" ) {
+		while ( callback.length ) {
+			synchronize( callback.shift() );
+		}
+		return;
+	}
+
+	if ( priority ) {
+		config.queue.splice( priorityCount++, 0, callback );
+	} else if ( seed ) {
+		if ( !unitSampler ) {
+			unitSampler = unitSamplerGenerator( seed );
+		}
+
+		// Insert into a random position after all priority items
+		index = Math.floor( unitSampler() * ( config.queue.length - priorityCount + 1 ) );
+		config.queue.splice( priorityCount + index, 0, callback );
+	} else {
+		config.queue.push( callback );
+	}
+
+	if ( config.autorun && !config.blocking ) {
+		process( last );
+	}
+}
+
+function unitSamplerGenerator( seed ) {
+
+	// 32-bit xorshift, requires only a nonzero seed
+	// http://excamera.com/sphinx/article-xorshift.html
+	var sample = parseInt( generateHash( seed ), 16 ) || -1;
+	return function() {
+		sample ^= sample << 13;
+		sample ^= sample >>> 17;
+		sample ^= sample << 5;
+
+		// ECMAScript has no unsigned number type
+		if ( sample < 0 ) {
+			sample += 0x100000000;
+		}
+
+		return sample / 0x100000000;
+	};
+}
+
+function saveGlobal() {
+	config.pollution = [];
+
+	if ( config.noglobals ) {
+		for ( var key in global ) {
+			if ( hasOwn.call( global, key ) ) {
+
+				// In Opera sometimes DOM element ids show up here, ignore them
+				if ( /^qunit-test-output/.test( key ) ) {
+					continue;
+				}
+				config.pollution.push( key );
+			}
+		}
+	}
+}
+
+function checkPollution() {
+	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( ", " ) );
+	}
+}
+
+// Will be exposed as QUnit.asyncTest
+function asyncTest( testName, expected, callback ) {
+	if ( arguments.length === 2 ) {
+		callback = expected;
+		expected = null;
+	}
+
+	QUnit.test( testName, expected, callback, true );
+}
+
+// Will be exposed as QUnit.test
+function test( testName, expected, callback, async ) {
+	if ( focused )  { return; }
+
+	var newTest;
+
+	if ( arguments.length === 2 ) {
+		callback = expected;
+		expected = null;
+	}
+
+	newTest = new Test( {
+		testName: testName,
+		expected: expected,
+		async: async,
+		callback: callback
+	} );
+
+	newTest.queue();
+}
+
+// Will be exposed as QUnit.skip
+function skip( testName ) {
+	if ( focused )  { return; }
+
+	var test = new Test( {
+		testName: testName,
+		skip: true
+	} );
+
+	test.queue();
+}
+
+// Will be exposed as QUnit.only
+function only( testName, expected, callback, async ) {
+	var newTest;
+
+	if ( focused )  { return; }
+
+	QUnit.config.queue.length = 0;
+	focused = true;
+
+	if ( arguments.length === 2 ) {
+		callback = expected;
+		expected = null;
+	}
+
+	newTest = new Test( {
+		testName: testName,
+		expected: expected,
+		async: async,
+		callback: callback
+	} );
+
+	newTest.queue();
+}
+
+function Assert( testContext ) {
+	this.test = testContext;
+}
+
+// Assert helpers
+QUnit.assert = Assert.prototype = {
+
+	// Specify the number of expected assertions to guarantee that failed test
+	// (no assertions are run at all) don't slip through.
+	expect: function( asserts ) {
+		if ( arguments.length === 1 ) {
+			this.test.expected = asserts;
+		} else {
+			return this.test.expected;
+		}
+	},
+
+	// Increment this Test's semaphore counter, then return a function that
+	// decrements that counter a maximum of once.
+	async: function( count ) {
+		var test = this.test,
+			popped = false,
+			acceptCallCount = count;
+
+		if ( typeof acceptCallCount === "undefined" ) {
+			acceptCallCount = 1;
+		}
+
+		test.semaphore += 1;
+		test.usedAsync = true;
+		pauseProcessing();
+
+		return function done() {
+
+			if ( popped ) {
+				test.pushFailure( "Too many calls to the `assert.async` callback",
+					sourceFromStacktrace( 2 ) );
+				return;
+			}
+			acceptCallCount -= 1;
+			if ( acceptCallCount > 0 ) {
+				return;
+			}
+
+			test.semaphore -= 1;
+			popped = true;
+			resumeProcessing();
+		};
+	},
+
+	// Exports test.push() to the user API
+	// Alias of pushResult.
+	push: function( result, actual, expected, message, negative ) {
+		var currentAssert = this instanceof Assert ? this : QUnit.config.current.assert;
+		return currentAssert.pushResult( {
+			result: result,
+			actual: actual,
+			expected: expected,
+			message: message,
+			negative: negative
+		} );
+	},
+
+	pushResult: function( resultInfo ) {
+
+		// Destructure of resultInfo = { result, actual, expected, message, negative }
+		var assert = this,
+			currentTest = ( assert instanceof Assert && assert.test ) || QUnit.config.current;
+
+		// Backwards compatibility fix.
+		// Allows the direct use of global exported assertions and QUnit.assert.*
+		// Although, it's use is not recommended as it can leak assertions
+		// to other tests from async tests, because we only get a reference to the current test,
+		// not exactly the test where assertion were intended to be called.
+		if ( !currentTest ) {
+			throw new Error( "assertion outside test context, in " + sourceFromStacktrace( 2 ) );
+		}
+
+		if ( currentTest.usedAsync === true && currentTest.semaphore === 0 ) {
+			currentTest.pushFailure( "Assertion after the final `assert.async` was resolved",
+				sourceFromStacktrace( 2 ) );
+
+			// Allow this assertion to continue running anyway...
+		}
+
+		if ( !( assert instanceof Assert ) ) {
+			assert = currentTest.assert;
+		}
+
+		return assert.test.pushResult( resultInfo );
+	},
+
+	ok: function( result, message ) {
+		message = message || ( result ? "okay" : "failed, expected argument to be truthy, was: " +
+			QUnit.dump.parse( result ) );
+		this.pushResult( {
+			result: !!result,
+			actual: result,
+			expected: true,
+			message: message
+		} );
+	},
+
+	notOk: function( result, message ) {
+		message = message || ( !result ? "okay" : "failed, expected argument to be falsy, was: " +
+			QUnit.dump.parse( result ) );
+		this.pushResult( {
+			result: !result,
+			actual: result,
+			expected: false,
+			message: message
+		} );
+	},
+
+	equal: function( actual, expected, message ) {
+		/*jshint eqeqeq:false */
+		this.pushResult( {
+			result: expected == actual,
+			actual: actual,
+			expected: expected,
+			message: message
+		} );
+	},
+
+	notEqual: function( actual, expected, message ) {
+		/*jshint eqeqeq:false */
+		this.pushResult( {
+			result: expected != actual,
+			actual: actual,
+			expected: expected,
+			message: message,
+			negative: true
+		} );
+	},
+
+	propEqual: function( actual, expected, message ) {
+		actual = objectValues( actual );
+		expected = objectValues( expected );
+		this.pushResult( {
+			result: QUnit.equiv( actual, expected ),
+			actual: actual,
+			expected: expected,
+			message: message
+		} );
+	},
+
+	notPropEqual: function( actual, expected, message ) {
+		actual = objectValues( actual );
+		expected = objectValues( expected );
+		this.pushResult( {
+			result: !QUnit.equiv( actual, expected ),
+			actual: actual,
+			expected: expected,
+			message: message,
+			negative: true
+		} );
+	},
+
+	deepEqual: function( actual, expected, message ) {
+		this.pushResult( {
+			result: QUnit.equiv( actual, expected ),
+			actual: actual,
+			expected: expected,
+			message: message
+		} );
+	},
+
+	notDeepEqual: function( actual, expected, message ) {
+		this.pushResult( {
+			result: !QUnit.equiv( actual, expected ),
+			actual: actual,
+			expected: expected,
+			message: message,
+			negative: true
+		} );
+	},
+
+	strictEqual: function( actual, expected, message ) {
+		this.pushResult( {
+			result: expected === actual,
+			actual: actual,
+			expected: expected,
+			message: message
+		} );
+	},
+
+	notStrictEqual: function( actual, expected, message ) {
+		this.pushResult( {
+			result: expected !== actual,
+			actual: actual,
+			expected: expected,
+			message: message,
+			negative: true
+		} );
+	},
+
+	"throws": function( block, expected, message ) {
+		var actual, expectedType,
+			expectedOutput = expected,
+			ok = false,
+			currentTest = ( this instanceof Assert && this.test ) || QUnit.config.current;
+
+		// 'expected' is optional unless doing string comparison
+		if ( message == null && typeof expected === "string" ) {
+			message = expected;
+			expected = null;
+		}
+
+		currentTest.ignoreGlobalErrors = true;
+		try {
+			block.call( currentTest.testEnvironment );
+		} catch ( e ) {
+			actual = e;
+		}
+		currentTest.ignoreGlobalErrors = false;
+
+		if ( actual ) {
+			expectedType = QUnit.objectType( expected );
+
+			// We don't want to validate thrown error
+			if ( !expected ) {
+				ok = true;
+				expectedOutput = null;
+
+			// Expected is a regexp
+			} else if ( expectedType === "regexp" ) {
+				ok = expected.test( errorString( actual ) );
+
+			// Expected is a string
+			} else if ( expectedType === "string" ) {
+				ok = expected === errorString( actual );
+
+			// Expected is a constructor, maybe an Error constructor
+			} else if ( expectedType === "function" && actual instanceof expected ) {
+				ok = true;
+
+			// Expected is an Error object
+			} else if ( expectedType === "object" ) {
+				ok = actual instanceof expected.constructor &&
+					actual.name === expected.name &&
+					actual.message === expected.message;
+
+			// Expected is a validation function which returns true if validation passed
+			} else if ( expectedType === "function" && expected.call( {}, actual ) === true ) {
+				expectedOutput = null;
+				ok = true;
+			}
+		}
+
+		currentTest.assert.pushResult( {
+			result: ok,
+			actual: actual,
+			expected: expectedOutput,
+			message: message
+		} );
+	}
+};
+
+// Provide an alternative to assert.throws(), for environments that consider throws a reserved word
+// Known to us are: Closure Compiler, Narwhal
+( function() {
+	/*jshint sub:true */
+	Assert.prototype.raises = Assert.prototype [ "throws" ]; //jscs:ignore requireDotNotation
+}() );
+
+function errorString( error ) {
+	var name, message,
+		resultErrorString = error.toString();
+	if ( resultErrorString.substring( 0, 7 ) === "[object" ) {
+		name = error.name ? error.name.toString() : "Error";
+		message = error.message ? error.message.toString() : "";
+		if ( name && message ) {
+			return name + ": " + message;
+		} else if ( name ) {
+			return name;
+		} else if ( message ) {
+			return message;
+		} else {
+			return "Error";
+		}
+	} else {
+		return resultErrorString;
+	}
+}
+
+// Test for equality any JavaScript type.
+// Author: Philippe Rathé <prathe@gmail.com>
+QUnit.equiv = ( function() {
+
+	// Stack to decide between skip/abort functions
+	var callers = [];
+
+	// Stack to avoiding loops from circular referencing
+	var parents = [];
+	var parentsB = [];
+
+	var getProto = Object.getPrototypeOf || function( obj ) {
+
+		/*jshint proto: true */
+		return obj.__proto__;
+	};
+
+	function useStrictEquality( b, a ) {
+
+		// To catch short annotation VS 'new' annotation of a declaration. e.g.:
+		// `var i = 1;`
+		// `var j = new Number(1);`
+		if ( typeof a === "object" ) {
+			a = a.valueOf();
+		}
+		if ( typeof b === "object" ) {
+			b = b.valueOf();
+		}
+
+		return a === b;
+	}
+
+	function compareConstructors( a, b ) {
+		var protoA = getProto( a );
+		var protoB = getProto( b );
+
+		// Comparing constructors is more strict than using `instanceof`
+		if ( a.constructor === b.constructor ) {
+			return true;
+		}
+
+		// Ref #851
+		// If the obj prototype descends from a null constructor, treat it
+		// as a null prototype.
+		if ( protoA && protoA.constructor === null ) {
+			protoA = null;
+		}
+		if ( protoB && protoB.constructor === null ) {
+			protoB = null;
+		}
+
+		// Allow objects with no prototype to be equivalent to
+		// objects with Object as their constructor.
+		if ( ( protoA === null && protoB === Object.prototype ) ||
+				( protoB === null && protoA === Object.prototype ) ) {
+			return true;
+		}
+
+		return false;
+	}
+
+	function getRegExpFlags( regexp ) {
+		return "flags" in regexp ? regexp.flags : regexp.toString().match( /[gimuy]*$/ )[ 0 ];
+	}
+
+	var callbacks = {
+		"string": useStrictEquality,
+		"boolean": useStrictEquality,
+		"number": useStrictEquality,
+		"null": useStrictEquality,
+		"undefined": useStrictEquality,
+		"symbol": useStrictEquality,
+		"date": useStrictEquality,
+
+		"nan": function() {
+			return true;
+		},
+
+		"regexp": function( b, a ) {
+			return a.source === b.source &&
+
+				// Include flags in the comparison
+				getRegExpFlags( a ) === getRegExpFlags( b );
+		},
+
+		// - 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, aCircular, bCircular;
+
+			len = a.length;
+			if ( len !== b.length ) {
+
+				// Safe and faster
+				return false;
+			}
+
+			// Track reference to avoid circular references
+			parents.push( a );
+			parentsB.push( b );
+			for ( i = 0; i < len; i++ ) {
+				loop = false;
+				for ( j = 0; j < parents.length; j++ ) {
+					aCircular = parents[ j ] === a[ i ];
+					bCircular = parentsB[ j ] === b[ i ];
+					if ( aCircular || bCircular ) {
+						if ( a[ i ] === b[ i ] || aCircular && bCircular ) {
+							loop = true;
+						} else {
+							parents.pop();
+							parentsB.pop();
+							return false;
+						}
+					}
+				}
+				if ( !loop && !innerEquiv( a[ i ], b[ i ] ) ) {
+					parents.pop();
+					parentsB.pop();
+					return false;
+				}
+			}
+			parents.pop();
+			parentsB.pop();
+			return true;
+		},
+
+		"set": function( b, a ) {
+			var innerEq,
+				outerEq = true;
+
+			if ( a.size !== b.size ) {
+				return false;
+			}
+
+			a.forEach( function( aVal ) {
+				innerEq = false;
+
+				b.forEach( function( bVal ) {
+					if ( innerEquiv( bVal, aVal ) ) {
+						innerEq = true;
+					}
+				} );
+
+				if ( !innerEq ) {
+					outerEq = false;
+				}
+			} );
+
+			return outerEq;
+		},
+
+		"map": function( b, a ) {
+			var innerEq,
+				outerEq = true;
+
+			if ( a.size !== b.size ) {
+				return false;
+			}
+
+			a.forEach( function( aVal, aKey ) {
+				innerEq = false;
+
+				b.forEach( function( bVal, bKey ) {
+					if ( innerEquiv( [ bVal, bKey ], [ aVal, aKey ] ) ) {
+						innerEq = true;
+					}
+				} );
+
+				if ( !innerEq ) {
+					outerEq = false;
+				}
+			} );
+
+			return outerEq;
+		},
+
+		"object": function( b, a ) {
+			var i, j, loop, aCircular, bCircular;
+
+			// Default to true
+			var eq = true;
+			var aProperties = [];
+			var bProperties = [];
+
+			if ( compareConstructors( a, b ) === false ) {
+				return false;
+			}
+
+			// Stack constructor before traversing properties
+			callers.push( a.constructor );
+
+			// Track reference to avoid circular references
+			parents.push( a );
+			parentsB.push( b );
+
+			// Be strict: don't ensure hasOwnProperty and go deep
+			for ( i in a ) {
+				loop = false;
+				for ( j = 0; j < parents.length; j++ ) {
+					aCircular = parents[ j ] === a[ i ];
+					bCircular = parentsB[ j ] === b[ i ];
+					if ( aCircular || bCircular ) {
+						if ( a[ i ] === b[ i ] || aCircular && bCircular ) {
+							loop = true;
+						} else {
+							eq = false;
+							break;
+						}
+					}
+				}
+				aProperties.push( i );
+				if ( !loop && !innerEquiv( a[ i ], b[ i ] ) ) {
+					eq = false;
+					break;
+				}
+			}
+
+			parents.pop();
+			parentsB.pop();
+
+			// Unstack, we are done
+			callers.pop();
+
+			for ( i in b ) {
+
+				// Collect b's properties
+				bProperties.push( i );
+			}
+
+			// Ensures identical properties name
+			return eq && innerEquiv( aProperties.sort(), bProperties.sort() );
+		}
+	};
+
+	function typeEquiv( a, b ) {
+		var type = QUnit.objectType( a );
+		return QUnit.objectType( b ) === type && callbacks[ type ]( b, a );
+	}
+
+	// The real equiv function
+	function innerEquiv( a, b ) {
+
+		// We're done when there's nothing more to compare
+		if ( arguments.length < 2 ) {
+			return true;
+		}
+
+		// Require type-specific equality
+		return ( a === b || typeEquiv( a, b ) ) &&
+
+			// ...across all consecutive argument pairs
+			( arguments.length === 2 || innerEquiv.apply( this, [].slice.call( arguments, 1 ) ) );
+	}
+
+	return innerEquiv;
+}() );
+
+// Based on jsDump by Ariel Flesler
+// http://flesler.blogspot.com/2008/05/jsdump-pretty-dump-of-any-javascript.html
+QUnit.dump = ( function() {
+	function quote( str ) {
+		return "\"" + str.toString().replace( /\\/g, "\\\\" ).replace( /"/g, "\\\"" ) + "\"";
+	}
+	function literal( o ) {
+		return o + "";
+	}
+	function join( pre, arr, post ) {
+		var s = dump.separator(),
+			base = dump.indent(),
+			inner = dump.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 );
+
+		if ( dump.maxDepth && dump.depth > dump.maxDepth ) {
+			return "[object Array]";
+		}
+
+		this.up();
+		while ( i-- ) {
+			ret[ i ] = this.parse( arr[ i ], undefined, stack );
+		}
+		this.down();
+		return join( "[", ret, "]" );
+	}
+
+	var reName = /^function (\w+)/,
+		dump = {
+
+			// The objType is used mostly internally, you can fix a (custom) type in advance
+			parse: function( obj, objType, stack ) {
+				stack = stack || [];
+				var res, parser, parserType,
+					inStack = inArray( obj, stack );
+
+				if ( inStack !== -1 ) {
+					return "recursion(" + ( inStack - stack.length ) + ")";
+				}
+
+				objType = objType || this.typeOf( obj  );
+				parser = this.parsers[ objType ];
+				parserType = typeof parser;
+
+				if ( parserType === "function" ) {
+					stack.push( obj );
+					res = parser.call( this, obj, stack );
+					stack.pop();
+					return res;
+				}
+				return ( parserType === "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 ( obj.setInterval !== undefined &&
+						obj.document !== undefined &&
+						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" && obj.item !== undefined &&
+					( obj.length ? obj.item( 0 ) === obj[ 0 ] : ( obj.item( 0 ) === null &&
+					obj[ 0 ] === undefined ) ) )
+				) {
+					type = "array";
+				} else if ( obj.constructor === Error.prototype.constructor ) {
+					type = "error";
+				} else {
+					type = typeof obj;
+				}
+				return type;
+			},
+
+			separator: function() {
+				return this.multiline ? this.HTML ? "<br />" : "\n" : this.HTML ? "&#160;" : " ";
+			},
+
+			// Extra can be a number, shortcut for increasing-calling-decreasing
+			indent: function( extra ) {
+				if ( !this.multiline ) {
+					return "";
+				}
+				var chr = this.indentChar;
+				if ( this.HTML ) {
+					chr = chr.replace( /\t/g, "   " ).replace( / /g, "&#160;" );
+				}
+				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,
+			maxDepth: QUnit.config.maxDepth,
+
+			// This is the list of parsers, to modify them, use dump.setParser
+			parsers: {
+				window: "[Window]",
+				document: "[Document]",
+				error: function( error ) {
+					return "Error(\"" + error.message + "\")";
+				},
+				unknown: "[Unknown]",
+				"null": "null",
+				"undefined": "undefined",
+				"function": function( fn ) {
+					var ret = "function",
+
+						// Functions never have name in IE
+						name = "name" in fn ? fn.name : ( reName.exec( fn ) || [] )[ 1 ];
+
+					if ( name ) {
+						ret += " " + name;
+					}
+					ret += "(";
+
+					ret = [ ret, dump.parse( fn, "functionArgs" ), "){" ].join( "" );
+					return join( ret, dump.parse( fn, "functionCode" ), "}" );
+				},
+				array: array,
+				nodelist: array,
+				"arguments": array,
+				object: function( map, stack ) {
+					var keys, key, val, i, nonEnumerableProperties,
+						ret = [];
+
+					if ( dump.maxDepth && dump.depth > dump.maxDepth ) {
+						return "[object Object]";
+					}
+
+					dump.up();
+					keys = [];
+					for ( key in map ) {
+						keys.push( key );
+					}
+
+					// Some properties are not always enumerable on Error objects.
+					nonEnumerableProperties = [ "message", "name" ];
+					for ( i in nonEnumerableProperties ) {
+						key = nonEnumerableProperties[ i ];
+						if ( key in map && inArray( key, keys ) < 0 ) {
+							keys.push( key );
+						}
+					}
+					keys.sort();
+					for ( i = 0; i < keys.length; i++ ) {
+						key = keys[ i ];
+						val = map[ key ];
+						ret.push( dump.parse( key, "key" ) + ": " +
+							dump.parse( val, undefined, stack ) );
+					}
+					dump.down();
+					return join( "{", ret, "}" );
+				},
+				node: function( node ) {
+					var len, i, val,
+						open = dump.HTML ? "&lt;" : "<",
+						close = dump.HTML ? "&gt;" : ">",
+						tag = node.nodeName.toLowerCase(),
+						ret = open + tag,
+						attrs = node.attributes;
+
+					if ( attrs ) {
+						for ( i = 0, len = attrs.length; i < len; i++ ) {
+							val = attrs[ i ].nodeValue;
+
+							// IE6 includes all attributes in .attributes, even ones not explicitly
+							// set. Those have values like undefined, null, 0, false, "" or
+							// "inherit".
+							if ( val && val !== "inherit" ) {
+								ret += " " + attrs[ i ].nodeName + "=" +
+									dump.parse( val, "attribute" );
+							}
+						}
+					}
+					ret += close;
+
+					// Show content of TextNode or CDATASection
+					if ( node.nodeType === 3 || node.nodeType === 4 ) {
+						ret += node.nodeValue;
+					}
+
+					return ret + open + "/" + tag + close;
+				},
+
+				// Function calls it internally, it's the arguments part of the function
+				functionArgs: function( fn ) {
+					var args,
+						l = fn.length;
+
+					if ( !l ) {
+						return "";
+					}
+
+					args = new Array( l );
+					while ( l-- ) {
+
+						// 97 is 'a'
+						args[ l ] = String.fromCharCode( 97 + l );
+					}
+					return " " + args.join( ", " ) + " ";
+				},
+
+				// Object calls it internally, the key part of an item in a map
+				key: quote,
+
+				// Function calls it internally, it's the content of the function
+				functionCode: "[code]",
+
+				// Node calls it internally, it's a html attribute value
+				attribute: quote,
+				string: quote,
+				date: quote,
+				regexp: literal,
+				number: literal,
+				"boolean": literal
+			},
+
+			// If true, entities are escaped ( <, >, \t, space and \n )
+			HTML: false,
+
+			// Indentation unit
+			indentChar: "  ",
+
+			// If true, items in a collection, are separated by a \n, else just a space.
+			multiline: true
+		};
+
+	return dump;
+}() );
+
+// Back compat
+QUnit.jsDump = QUnit.dump;
+
+// Deprecated
+// Extend assert methods to QUnit for Backwards compatibility
+( function() {
+	var i,
+		assertions = Assert.prototype;
+
+	function applyCurrent( current ) {
+		return function() {
+			var assert = new Assert( QUnit.config.current );
+			current.apply( assert, arguments );
+		};
+	}
+
+	for ( i in assertions ) {
+		QUnit[ i ] = applyCurrent( assertions[ i ] );
+	}
+}() );
+
+// For browser, export only select globals
+if ( defined.document ) {
+
+	( function() {
+		var i, l,
+			keys = [
+				"test",
+				"module",
+				"expect",
+				"asyncTest",
+				"start",
+				"stop",
+				"ok",
+				"notOk",
+				"equal",
+				"notEqual",
+				"propEqual",
+				"notPropEqual",
+				"deepEqual",
+				"notDeepEqual",
+				"strictEqual",
+				"notStrictEqual",
+				"throws",
+				"raises"
+			];
+
+		for ( i = 0, l = keys.length; i < l; i++ ) {
+			window[ keys[ i ] ] = QUnit[ keys[ i ] ];
+		}
+	}() );
+
+	window.QUnit = QUnit;
+}
+
+// For nodejs
+if ( typeof module !== "undefined" && module && module.exports ) {
+	module.exports = QUnit;
+
+	// For consistency with CommonJS environments' exports
+	module.exports.QUnit = QUnit;
+}
+
+// For CommonJS with exports, but without module.exports, like Rhino
+if ( typeof exports !== "undefined" && exports ) {
+	exports.QUnit = QUnit;
+}
+
+if ( typeof define === "function" && define.amd ) {
+	define( function() {
+		return QUnit;
+	} );
+	QUnit.config.autostart = false;
+}
+
+// Get a reference to the global object, like window in browsers
+}( ( function() {
+	return this;
+}() ) ) );
+
+( function() {
+
+// Only interact with URLs via window.location
+var location = typeof window !== "undefined" && window.location;
+if ( !location ) {
+	return;
+}
+
+var urlParams = getUrlParams();
+
+QUnit.urlParams = urlParams;
+
+// Match module/test by inclusion in an array
+QUnit.config.moduleId = [].concat( urlParams.moduleId || [] );
+QUnit.config.testId = [].concat( urlParams.testId || [] );
+
+// Exact case-insensitive match of the module name
+QUnit.config.module = urlParams.module;
+
+// Regular expression or case-insenstive substring match against "moduleName: testName"
+QUnit.config.filter = urlParams.filter;
+
+// Test order randomization
+if ( urlParams.seed === true ) {
+
+	// Generate a random seed if the option is specified without a value
+	QUnit.config.seed = Math.random().toString( 36 ).slice( 2 );
+} else if ( urlParams.seed ) {
+	QUnit.config.seed = urlParams.seed;
+}
+
+// Add URL-parameter-mapped config values with UI form rendering data
+QUnit.config.urlConfig.push(
+	{
+		id: "hidepassed",
+		label: "Hide passed tests",
+		tooltip: "Only show tests and assertions that fail. Stored as query-strings."
+	},
+	{
+		id: "noglobals",
+		label: "Check for Globals",
+		tooltip: "Enabling this will test if any test introduces new properties on the " +
+			"global object (`window` in Browsers). Stored as query-strings."
+	},
+	{
+		id: "notrycatch",
+		label: "No try-catch",
+		tooltip: "Enabling this will run tests outside of a try-catch block. Makes debugging " +
+			"exceptions in IE reasonable. Stored as query-strings."
+	}
+);
+
+QUnit.begin( function() {
+	var i, option,
+		urlConfig = QUnit.config.urlConfig;
+
+	for ( i = 0; i < urlConfig.length; i++ ) {
+
+		// Options can be either strings or objects with nonempty "id" properties
+		option = QUnit.config.urlConfig[ i ];
+		if ( typeof option !== "string" ) {
+			option = option.id;
+		}
+
+		if ( QUnit.config[ option ] === undefined ) {
+			QUnit.config[ option ] = urlParams[ option ];
+		}
+	}
+} );
+
+function getUrlParams() {
+	var i, param, name, value;
+	var urlParams = {};
+	var params = location.search.slice( 1 ).split( "&" );
+	var length = params.length;
+
+	for ( i = 0; i < length; i++ ) {
+		if ( params[ i ] ) {
+			param = params[ i ].split( "=" );
+			name = decodeURIComponent( param[ 0 ] );
+
+			// Allow just a key to turn on a flag, e.g., test.html?noglobals
+			value = param.length === 1 ||
+				decodeURIComponent( param.slice( 1 ).join( "=" ) ) ;
+			if ( urlParams[ name ] ) {
+				urlParams[ name ] = [].concat( urlParams[ name ], value );
+			} else {
+				urlParams[ name ] = value;
+			}
+		}
+	}
+
+	return urlParams;
+}
+
+// Don't load the HTML Reporter on non-browser environments
+if ( typeof window === "undefined" || !window.document ) {
+	return;
+}
+
+// Deprecated QUnit.init - Ref #530
+// Re-initialize the configuration options
+QUnit.init = function() {
+	var config = QUnit.config;
+
+	config.stats = { all: 0, bad: 0 };
+	config.moduleStats = { all: 0, bad: 0 };
+	config.started = 0;
+	config.updateRate = 1000;
+	config.blocking = false;
+	config.autostart = true;
+	config.autorun = false;
+	config.filter = "";
+	config.queue = [];
+
+	appendInterface();
+};
+
+var config = QUnit.config,
+	document = window.document,
+	collapseNext = false,
+	hasOwn = Object.prototype.hasOwnProperty,
+	unfilteredUrl = setUrl( { filter: undefined, module: undefined,
+		moduleId: undefined, testId: undefined } ),
+	defined = {
+		sessionStorage: ( function() {
+			var x = "qunit-test-string";
+			try {
+				sessionStorage.setItem( x, x );
+				sessionStorage.removeItem( x );
+				return true;
+			} catch ( e ) {
+				return false;
+			}
+		}() )
+	},
+	modulesList = [];
+
+/**
+* Escape text for attribute or text content.
+*/
+function escapeText( s ) {
+	if ( !s ) {
+		return "";
+	}
+	s = s + "";
+
+	// Both single quotes and double quotes (for attributes)
+	return s.replace( /['"<>&]/g, function( s ) {
+		switch ( s ) {
+		case "'":
+			return "&#039;";
+		case "\"":
+			return "&quot;";
+		case "<":
+			return "&lt;";
+		case ">":
+			return "&gt;";
+		case "&":
+			return "&amp;";
+		}
+	} );
+}
+
+/**
+ * @param {HTMLElement} elem
+ * @param {string} type
+ * @param {Function} fn
+ */
+function addEvent( elem, type, fn ) {
+	if ( elem.addEventListener ) {
+
+		// Standards-based browsers
+		elem.addEventListener( type, fn, false );
+	} else if ( elem.attachEvent ) {
+
+		// Support: IE <9
+		elem.attachEvent( "on" + type, function() {
+			var event = window.event;
+			if ( !event.target ) {
+				event.target = event.srcElement || document;
+			}
+
+			fn.call( elem, event );
+		} );
+	}
+}
+
+/**
+ * @param {Array|NodeList} elems
+ * @param {string} type
+ * @param {Function} fn
+ */
+function addEvents( elems, type, fn ) {
+	var i = elems.length;
+	while ( i-- ) {
+		addEvent( elems[ i ], type, fn );
+	}
+}
+
+function hasClass( elem, name ) {
+	return ( " " + elem.className + " " ).indexOf( " " + name + " " ) >= 0;
+}
+
+function addClass( elem, name ) {
+	if ( !hasClass( elem, name ) ) {
+		elem.className += ( elem.className ? " " : "" ) + name;
+	}
+}
+
+function toggleClass( elem, name, force ) {
+	if ( force || typeof force === "undefined" && !hasClass( elem, name ) ) {
+		addClass( elem, name );
+	} else {
+		removeClass( elem, name );
+	}
+}
+
+function removeClass( elem, name ) {
+	var set = " " + elem.className + " ";
+
+	// Class name may appear multiple times
+	while ( set.indexOf( " " + name + " " ) >= 0 ) {
+		set = set.replace( " " + name + " ", " " );
+	}
+
+	// Trim for prettiness
+	elem.className = typeof set.trim === "function" ? set.trim() : set.replace( /^\s+|\s+$/g, "" );
+}
+
+function id( name ) {
+	return document.getElementById && document.getElementById( name );
+}
+
+function getUrlConfigHtml() {
+	var i, j, val,
+		escaped, escapedTooltip,
+		selection = false,
+		urlConfig = config.urlConfig,
+		urlConfigHtml = "";
+
+	for ( i = 0; i < urlConfig.length; i++ ) {
+
+		// Options can be either strings or objects with nonempty "id" properties
+		val = config.urlConfig[ i ];
+		if ( typeof val === "string" ) {
+			val = {
+				id: val,
+				label: val
+			};
+		}
+
+		escaped = escapeText( val.id );
+		escapedTooltip = escapeText( val.tooltip );
+
+		if ( !val.value || typeof val.value === "string" ) {
+			urlConfigHtml += "<input id='qunit-urlconfig-" + escaped +
+				"' name='" + escaped + "' type='checkbox'" +
+				( val.value ? " value='" + escapeText( val.value ) + "'" : "" ) +
+				( config[ val.id ] ? " checked='checked'" : "" ) +
+				" title='" + escapedTooltip + "' /><label for='qunit-urlconfig-" + escaped +
+				"' title='" + escapedTooltip + "'>" + val.label + "</label>";
+		} else {
+			urlConfigHtml += "<label for='qunit-urlconfig-" + escaped +
+				"' title='" + escapedTooltip + "'>" + val.label +
+				": </label><select id='qunit-urlconfig-" + escaped +
+				"' name='" + escaped + "' title='" + escapedTooltip + "'><option></option>";
+
+			if ( QUnit.is( "array", val.value ) ) {
+				for ( j = 0; j < val.value.length; j++ ) {
+					escaped = escapeText( val.value[ j ] );
+					urlConfigHtml += "<option value='" + escaped + "'" +
+						( config[ val.id ] === val.value[ j ] ?
+							( selection = true ) && " selected='selected'" : "" ) +
+						">" + escaped + "</option>";
+				}
+			} else {
+				for ( j in val.value ) {
+					if ( hasOwn.call( val.value, j ) ) {
+						urlConfigHtml += "<option value='" + escapeText( j ) + "'" +
+							( config[ val.id ] === j ?
+								( selection = true ) && " selected='selected'" : "" ) +
+							">" + escapeText( val.value[ j ] ) + "</option>";
+					}
+				}
+			}
+			if ( config[ val.id ] && !selection ) {
+				escaped = escapeText( config[ val.id ] );
+				urlConfigHtml += "<option value='" + escaped +
+					"' selected='selected' disabled='disabled'>" + escaped + "</option>";
+			}
+			urlConfigHtml += "</select>";
+		}
+	}
+
+	return urlConfigHtml;
+}
+
+// Handle "click" events on toolbar checkboxes and "change" for select menus.
+// Updates the URL with the new state of `config.urlConfig` values.
+function toolbarChanged() {
+	var updatedUrl, value, tests,
+		field = this,
+		params = {};
+
+	// Detect if field is a select menu or a checkbox
+	if ( "selectedIndex" in field ) {
+		value = field.options[ field.selectedIndex ].value || undefined;
+	} else {
+		value = field.checked ? ( field.defaultValue || true ) : undefined;
+	}
+
+	params[ field.name ] = value;
+	updatedUrl = setUrl( params );
+
+	// Check if we can apply the change without a page refresh
+	if ( "hidepassed" === field.name && "replaceState" in window.history ) {
+		QUnit.urlParams[ field.name ] = value;
+		config[ field.name ] = value || false;
+		tests = id( "qunit-tests" );
+		if ( tests ) {
+			toggleClass( tests, "hidepass", value || false );
+		}
+		window.history.replaceState( null, "", updatedUrl );
+	} else {
+		window.location = updatedUrl;
+	}
+}
+
+function setUrl( params ) {
+	var key, arrValue, i,
+		querystring = "?",
+		location = window.location;
+
+	params = QUnit.extend( QUnit.extend( {}, QUnit.urlParams ), params );
+
+	for ( key in params ) {
+
+		// Skip inherited or undefined properties
+		if ( hasOwn.call( params, key ) && params[ key ] !== undefined ) {
+
+			// Output a parameter for each value of this key (but usually just one)
+			arrValue = [].concat( params[ key ] );
+			for ( i = 0; i < arrValue.length; i++ ) {
+				querystring += encodeURIComponent( key );
+				if ( arrValue[ i ] !== true ) {
+					querystring += "=" + encodeURIComponent( arrValue[ i ] );
+				}
+				querystring += "&";
+			}
+		}
+	}
+	return location.protocol + "//" + location.host +
+		location.pathname + querystring.slice( 0, -1 );
+}
+
+function applyUrlParams() {
+	var selectedModule,
+		modulesList = id( "qunit-modulefilter" ),
+		filter = id( "qunit-filter-input" ).value;
+
+	selectedModule = modulesList ?
+		decodeURIComponent( modulesList.options[ modulesList.selectedIndex ].value ) :
+		undefined;
+
+	window.location = setUrl( {
+		module: ( selectedModule === "" ) ? undefined : selectedModule,
+		filter: ( filter === "" ) ? undefined : filter,
+
+		// Remove moduleId and testId filters
+		moduleId: undefined,
+		testId: undefined
+	} );
+}
+
+function toolbarUrlConfigContainer() {
+	var urlConfigContainer = document.createElement( "span" );
+
+	urlConfigContainer.innerHTML = getUrlConfigHtml();
+	addClass( urlConfigContainer, "qunit-url-config" );
+
+	// For oldIE support:
+	// * Add handlers to the individual elements instead of the container
+	// * Use "click" instead of "change" for checkboxes
+	addEvents( urlConfigContainer.getElementsByTagName( "input" ), "click", toolbarChanged );
+	addEvents( urlConfigContainer.getElementsByTagName( "select" ), "change", toolbarChanged );
+
+	return urlConfigContainer;
+}
+
+function toolbarLooseFilter() {
+	var filter = document.createElement( "form" ),
+		label = document.createElement( "label" ),
+		input = document.createElement( "input" ),
+		button = document.createElement( "button" );
+
+	addClass( filter, "qunit-filter" );
+
+	label.innerHTML = "Filter: ";
+
+	input.type = "text";
+	input.value = config.filter || "";
+	input.name = "filter";
+	input.id = "qunit-filter-input";
+
+	button.innerHTML = "Go";
+
+	label.appendChild( input );
+
+	filter.appendChild( label );
+	filter.appendChild( button );
+	addEvent( filter, "submit", function( ev ) {
+		applyUrlParams();
+
+		if ( ev && ev.preventDefault ) {
+			ev.preventDefault();
+		}
+
+		return false;
+	} );
+
+	return filter;
+}
+
+function toolbarModuleFilterHtml() {
+	var i,
+		moduleFilterHtml = "";
+
+	if ( !modulesList.length ) {
+		return false;
+	}
+
+	moduleFilterHtml += "<label for='qunit-modulefilter'>Module: </label>" +
+		"<select id='qunit-modulefilter' name='modulefilter'><option value='' " +
+		( QUnit.urlParams.module === undefined ? "selected='selected'" : "" ) +
+		">< All Modules ></option>";
+
+	for ( i = 0; i < modulesList.length; i++ ) {
+		moduleFilterHtml += "<option value='" +
+			escapeText( encodeURIComponent( modulesList[ i ] ) ) + "' " +
+			( QUnit.urlParams.module === modulesList[ i ] ? "selected='selected'" : "" ) +
+			">" + escapeText( modulesList[ i ] ) + "</option>";
+	}
+	moduleFilterHtml += "</select>";
+
+	return moduleFilterHtml;
+}
+
+function toolbarModuleFilter() {
+	var toolbar = id( "qunit-testrunner-toolbar" ),
+		moduleFilter = document.createElement( "span" ),
+		moduleFilterHtml = toolbarModuleFilterHtml();
+
+	if ( !toolbar || !moduleFilterHtml ) {
+		return false;
+	}
+
+	moduleFilter.setAttribute( "id", "qunit-modulefilter-container" );
+	moduleFilter.innerHTML = moduleFilterHtml;
+
+	addEvent( moduleFilter.lastChild, "change", applyUrlParams );
+
+	toolbar.appendChild( moduleFilter );
+}
+
+function appendToolbar() {
+	var toolbar = id( "qunit-testrunner-toolbar" );
+
+	if ( toolbar ) {
+		toolbar.appendChild( toolbarUrlConfigContainer() );
+		toolbar.appendChild( toolbarLooseFilter() );
+		toolbarModuleFilter();
+	}
+}
+
+function appendHeader() {
+	var header = id( "qunit-header" );
+
+	if ( header ) {
+		header.innerHTML = "<a href='" + escapeText( unfilteredUrl ) + "'>" + header.innerHTML +
+			"</a> ";
+	}
+}
+
+function appendBanner() {
+	var banner = id( "qunit-banner" );
+
+	if ( banner ) {
+		banner.className = "";
+	}
+}
+
+function appendTestResults() {
+	var tests = id( "qunit-tests" ),
+		result = id( "qunit-testresult" );
+
+	if ( result ) {
+		result.parentNode.removeChild( result );
+	}
+
+	if ( tests ) {
+		tests.innerHTML = "";
+		result = document.createElement( "p" );
+		result.id = "qunit-testresult";
+		result.className = "result";
+		tests.parentNode.insertBefore( result, tests );
+		result.innerHTML = "Running...<br />&#160;";
+	}
+}
+
+function storeFixture() {
+	var fixture = id( "qunit-fixture" );
+	if ( fixture ) {
+		config.fixture = fixture.innerHTML;
+	}
+}
+
+function appendFilteredTest() {
+	var testId = QUnit.config.testId;
+	if ( !testId || testId.length <= 0 ) {
+		return "";
+	}
+	return "<div id='qunit-filteredTest'>Rerunning selected tests: " +
+		escapeText( testId.join( ", " ) ) +
+		" <a id='qunit-clearFilter' href='" +
+		escapeText( unfilteredUrl ) +
+		"'>Run all tests</a></div>";
+}
+
+function appendUserAgent() {
+	var userAgent = id( "qunit-userAgent" );
+
+	if ( userAgent ) {
+		userAgent.innerHTML = "";
+		userAgent.appendChild(
+			document.createTextNode(
+				"QUnit " + QUnit.version + "; " + navigator.userAgent
+			)
+		);
+	}
+}
+
+function appendInterface() {
+	var qunit = id( "qunit" );
+
+	if ( qunit ) {
+		qunit.innerHTML =
+			"<h1 id='qunit-header'>" + escapeText( document.title ) + "</h1>" +
+			"<h2 id='qunit-banner'></h2>" +
+			"<div id='qunit-testrunner-toolbar'></div>" +
+			appendFilteredTest() +
+			"<h2 id='qunit-userAgent'></h2>" +
+			"<ol id='qunit-tests'></ol>";
+	}
+
+	appendHeader();
+	appendBanner();
+	appendTestResults();
+	appendUserAgent();
+	appendToolbar();
+}
+
+function appendTestsList( modules ) {
+	var i, l, x, z, test, moduleObj;
+
+	for ( i = 0, l = modules.length; i < l; i++ ) {
+		moduleObj = modules[ i ];
+
+		for ( x = 0, z = moduleObj.tests.length; x < z; x++ ) {
+			test = moduleObj.tests[ x ];
+
+			appendTest( test.name, test.testId, moduleObj.name );
+		}
+	}
+}
+
+function appendTest( name, testId, moduleName ) {
+	var title, rerunTrigger, testBlock, assertList,
+		tests = id( "qunit-tests" );
+
+	if ( !tests ) {
+		return;
+	}
+
+	title = document.createElement( "strong" );
+	title.innerHTML = getNameHtml( name, moduleName );
+
+	rerunTrigger = document.createElement( "a" );
+	rerunTrigger.innerHTML = "Rerun";
+	rerunTrigger.href = setUrl( { testId: testId } );
+
+	testBlock = document.createElement( "li" );
+	testBlock.appendChild( title );
+	testBlock.appendChild( rerunTrigger );
+	testBlock.id = "qunit-test-output-" + testId;
+
+	assertList = document.createElement( "ol" );
+	assertList.className = "qunit-assert-list";
+
+	testBlock.appendChild( assertList );
+
+	tests.appendChild( testBlock );
+}
+
+// HTML Reporter initialization and load
+QUnit.begin( function( details ) {
+	var i, moduleObj, tests;
+
+	// Sort modules by name for the picker
+	for ( i = 0; i < details.modules.length; i++ ) {
+		moduleObj = details.modules[ i ];
+		if ( moduleObj.name ) {
+			modulesList.push( moduleObj.name );
+		}
+	}
+	modulesList.sort( function( a, b ) {
+		return a.localeCompare( b );
+	} );
+
+	// Capture fixture HTML from the page
+	storeFixture();
+
+	// Initialize QUnit elements
+	appendInterface();
+	appendTestsList( details.modules );
+	tests = id( "qunit-tests" );
+	if ( tests && config.hidepassed ) {
+		addClass( tests, "hidepass" );
+	}
+} );
+
+QUnit.done( function( details ) {
+	var i, key,
+		banner = id( "qunit-banner" ),
+		tests = id( "qunit-tests" ),
+		html = [
+			"Tests completed in ",
+			details.runtime,
+			" milliseconds.<br />",
+			"<span class='passed'>",
+			details.passed,
+			"</span> assertions of <span class='total'>",
+			details.total,
+			"</span> passed, <span class='failed'>",
+			details.failed,
+			"</span> failed."
+		].join( "" );
+
+	if ( banner ) {
+		banner.className = details.failed ? "qunit-fail" : "qunit-pass";
+	}
+
+	if ( tests ) {
+		id( "qunit-testresult" ).innerHTML = html;
+	}
+
+	if ( config.altertitle && 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 = [
+			( details.failed ? "\u2716" : "\u2714" ),
+			document.title.replace( /^[\u2714\u2716] /i, "" )
+		].join( " " );
+	}
+
+	// Clear own sessionStorage items if all tests passed
+	if ( config.reorder && defined.sessionStorage && details.failed === 0 ) {
+		for ( i = 0; i < sessionStorage.length; i++ ) {
+			key = sessionStorage.key( i++ );
+			if ( key.indexOf( "qunit-test-" ) === 0 ) {
+				sessionStorage.removeItem( key );
+			}
+		}
+	}
+
+	// Scroll back to top to show results
+	if ( config.scrolltop && window.scrollTo ) {
+		window.scrollTo( 0, 0 );
+	}
+} );
+
+function getNameHtml( name, module ) {
+	var nameHtml = "";
+
+	if ( module ) {
+		nameHtml = "<span class='module-name'>" + escapeText( module ) + "</span>: ";
+	}
+
+	nameHtml += "<span class='test-name'>" + escapeText( name ) + "</span>";
+
+	return nameHtml;
+}
+
+QUnit.testStart( function( details ) {
+	var running, testBlock, bad;
+
+	testBlock = id( "qunit-test-output-" + details.testId );
+	if ( testBlock ) {
+		testBlock.className = "running";
+	} else {
+
+		// Report later registered tests
+		appendTest( details.name, details.testId, details.module );
+	}
+
+	running = id( "qunit-testresult" );
+	if ( running ) {
+		bad = QUnit.config.reorder && defined.sessionStorage &&
+			+sessionStorage.getItem( "qunit-test-" + details.module + "-" + details.name );
+
+		running.innerHTML = ( bad ?
+			"Rerunning previously failed test: <br />" :
+			"Running: <br />" ) +
+			getNameHtml( details.name, details.module );
+	}
+
+} );
+
+function stripHtml( string ) {
+
+	// Strip tags, html entity and whitespaces
+	return string.replace( /<\/?[^>]+(>|$)/g, "" ).replace( /\&quot;/g, "" ).replace( /\s+/g, "" );
+}
+
+QUnit.log( function( details ) {
+	var assertList, assertLi,
+		message, expected, actual, diff,
+		showDiff = false,
+		testItem = id( "qunit-test-output-" + details.testId );
+
+	if ( !testItem ) {
+		return;
+	}
+
+	message = escapeText( details.message ) || ( details.result ? "okay" : "failed" );
+	message = "<span class='test-message'>" + message + "</span>";
+	message += "<span class='runtime'>@ " + details.runtime + " ms</span>";
+
+	// The pushFailure doesn't provide details.expected
+	// when it calls, it's implicit to also not show expected and diff stuff
+	// Also, we need to check details.expected existence, as it can exist and be undefined
+	if ( !details.result && hasOwn.call( details, "expected" ) ) {
+		if ( details.negative ) {
+			expected = "NOT " + QUnit.dump.parse( details.expected );
+		} else {
+			expected = QUnit.dump.parse( details.expected );
+		}
+
+		actual = QUnit.dump.parse( details.actual );
+		message += "<table><tr class='test-expected'><th>Expected: </th><td><pre>" +
+			escapeText( expected ) +
+			"</pre></td></tr>";
+
+		if ( actual !== expected ) {
+
+			message += "<tr class='test-actual'><th>Result: </th><td><pre>" +
+				escapeText( actual ) + "</pre></td></tr>";
+
+			// Don't show diff if actual or expected are booleans
+			if ( !( /^(true|false)$/.test( actual ) ) &&
+					!( /^(true|false)$/.test( expected ) ) ) {
+				diff = QUnit.diff( expected, actual );
+				showDiff = stripHtml( diff ).length !==
+					stripHtml( expected ).length +
+					stripHtml( actual ).length;
+			}
+
+			// Don't show diff if expected and actual are totally different
+			if ( showDiff ) {
+				message += "<tr class='test-diff'><th>Diff: </th><td><pre>" +
+					diff + "</pre></td></tr>";
+			}
+		} else if ( expected.indexOf( "[object Array]" ) !== -1 ||
+				expected.indexOf( "[object Object]" ) !== -1 ) {
+			message += "<tr class='test-message'><th>Message: </th><td>" +
+				"Diff suppressed as the depth of object is more than current max depth (" +
+				QUnit.config.maxDepth + ").<p>Hint: Use <code>QUnit.dump.maxDepth</code> to " +
+				" run with a higher max depth or <a href='" +
+				escapeText( setUrl( { maxDepth: -1 } ) ) + "'>" +
+				"Rerun</a> without max depth.</p></td></tr>";
+		} else {
+			message += "<tr class='test-message'><th>Message: </th><td>" +
+				"Diff suppressed as the expected and actual results have an equivalent" +
+				" serialization</td></tr>";
+		}
+
+		if ( details.source ) {
+			message += "<tr class='test-source'><th>Source: </th><td><pre>" +
+				escapeText( details.source ) + "</pre></td></tr>";
+		}
+
+		message += "</table>";
+
+	// This occurs when pushFailure is set and we have an extracted stack trace
+	} else if ( !details.result && details.source ) {
+		message += "<table>" +
+			"<tr class='test-source'><th>Source: </th><td><pre>" +
+			escapeText( details.source ) + "</pre></td></tr>" +
+			"</table>";
+	}
+
+	assertList = testItem.getElementsByTagName( "ol" )[ 0 ];
+
+	assertLi = document.createElement( "li" );
+	assertLi.className = details.result ? "pass" : "fail";
+	assertLi.innerHTML = message;
+	assertList.appendChild( assertLi );
+} );
+
+QUnit.testDone( function( details ) {
+	var testTitle, time, testItem, assertList,
+		good, bad, testCounts, skipped, sourceName,
+		tests = id( "qunit-tests" );
+
+	if ( !tests ) {
+		return;
+	}
+
+	testItem = id( "qunit-test-output-" + details.testId );
+
+	assertList = testItem.getElementsByTagName( "ol" )[ 0 ];
+
+	good = details.passed;
+	bad = details.failed;
+
+	// Store result when possible
+	if ( config.reorder && defined.sessionStorage ) {
+		if ( bad ) {
+			sessionStorage.setItem( "qunit-test-" + details.module + "-" + details.name, bad );
+		} else {
+			sessionStorage.removeItem( "qunit-test-" + details.module + "-" + details.name );
+		}
+	}
+
+	if ( bad === 0 ) {
+
+		// Collapse the passing tests
+		addClass( assertList, "qunit-collapsed" );
+	} else if ( bad && config.collapse && !collapseNext ) {
+
+		// Skip collapsing the first failing test
+		collapseNext = true;
+	} else {
+
+		// Collapse remaining tests
+		addClass( assertList, "qunit-collapsed" );
+	}
+
+	// The testItem.firstChild is the test name
+	testTitle = testItem.firstChild;
+
+	testCounts = bad ?
+		"<b class='failed'>" + bad + "</b>, " + "<b class='passed'>" + good + "</b>, " :
+		"";
+
+	testTitle.innerHTML += " <b class='counts'>(" + testCounts +
+		details.assertions.length + ")</b>";
+
+	if ( details.skipped ) {
+		testItem.className = "skipped";
+		skipped = document.createElement( "em" );
+		skipped.className = "qunit-skipped-label";
+		skipped.innerHTML = "skipped";
+		testItem.insertBefore( skipped, testTitle );
+	} else {
+		addEvent( testTitle, "click", function() {
+			toggleClass( assertList, "qunit-collapsed" );
+		} );
+
+		testItem.className = bad ? "fail" : "pass";
+
+		time = document.createElement( "span" );
+		time.className = "runtime";
+		time.innerHTML = details.runtime + " ms";
+		testItem.insertBefore( time, assertList );
+	}
+
+	// Show the source of the test when showing assertions
+	if ( details.source ) {
+		sourceName = document.createElement( "p" );
+		sourceName.innerHTML = "<strong>Source: </strong>" + details.source;
+		addClass( sourceName, "qunit-source" );
+		if ( bad === 0 ) {
+			addClass( sourceName, "qunit-collapsed" );
+		}
+		addEvent( testTitle, "click", function() {
+			toggleClass( sourceName, "qunit-collapsed" );
+		} );
+		testItem.appendChild( sourceName );
+	}
+} );
+
+// Avoid readyState issue with phantomjs
+// Ref: #818
+var notPhantom = ( function( p ) {
+	return !( p && p.version && p.version.major > 0 );
+} )( window.phantom );
+
+if ( notPhantom && document.readyState === "complete" ) {
+	QUnit.load();
+} else {
+	addEvent( window, "load", QUnit.load );
+}
+
+/*
+ * This file is a modified version of google-diff-match-patch's JavaScript implementation
+ * (https://code.google.com/p/google-diff-match-patch/source/browse/trunk/javascript/diff_match_patch_uncompressed.js),
+ * modifications are licensed as more fully set forth in LICENSE.txt.
+ *
+ * The original source of google-diff-match-patch is attributable and licensed as follows:
+ *
+ * Copyright 2006 Google Inc.
+ * https://code.google.com/p/google-diff-match-patch/
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * More Info:
+ *  https://code.google.com/p/google-diff-match-patch/
+ *
+ * Usage: QUnit.diff(expected, actual)
+ *
+ */
+QUnit.diff = ( function() {
+	function DiffMatchPatch() {
+	}
+
+	//  DIFF FUNCTIONS
+
+	/**
+	 * The data structure representing a diff is an array of tuples:
+	 * [[DIFF_DELETE, 'Hello'], [DIFF_INSERT, 'Goodbye'], [DIFF_EQUAL, ' world.']]
+	 * which means: delete 'Hello', add 'Goodbye' and keep ' world.'
+	 */
+	var DIFF_DELETE = -1,
+		DIFF_INSERT = 1,
+		DIFF_EQUAL = 0;
+
+	/**
+	 * Find the differences between two texts.  Simplifies the problem by stripping
+	 * any common prefix or suffix off the texts before diffing.
+	 * @param {string} text1 Old string to be diffed.
+	 * @param {string} text2 New string to be diffed.
+	 * @param {boolean=} optChecklines Optional speedup flag. If present and false,
+	 *     then don't run a line-level diff first to identify the changed areas.
+	 *     Defaults to true, which does a faster, slightly less optimal diff.
+	 * @return {!Array.<!DiffMatchPatch.Diff>} Array of diff tuples.
+	 */
+	DiffMatchPatch.prototype.DiffMain = function( text1, text2, optChecklines ) {
+		var deadline, checklines, commonlength,
+			commonprefix, commonsuffix, diffs;
+
+		// The diff must be complete in up to 1 second.
+		deadline = ( new Date() ).getTime() + 1000;
+
+		// Check for null inputs.
+		if ( text1 === null || text2 === null ) {
+			throw new Error( "Null input. (DiffMain)" );
+		}
+
+		// Check for equality (speedup).
+		if ( text1 === text2 ) {
+			if ( text1 ) {
+				return [
+					[ DIFF_EQUAL, text1 ]
+				];
+			}
+			return [];
+		}
+
+		if ( typeof optChecklines === "undefined" ) {
+			optChecklines = true;
+		}
+
+		checklines = optChecklines;
+
+		// Trim off common prefix (speedup).
+		commonlength = this.diffCommonPrefix( text1, text2 );
+		commonprefix = text1.substring( 0, commonlength );
+		text1 = text1.substring( commonlength );
+		text2 = text2.substring( commonlength );
+
+		// Trim off common suffix (speedup).
+		commonlength = this.diffCommonSuffix( text1, text2 );
+		commonsuffix = text1.substring( text1.length - commonlength );
+		text1 = text1.substring( 0, text1.length - commonlength );
+		text2 = text2.substring( 0, text2.length - commonlength );
+
+		// Compute the diff on the middle block.
+		diffs = this.diffCompute( text1, text2, checklines, deadline );
+
+		// Restore the prefix and suffix.
+		if ( commonprefix ) {
+			diffs.unshift( [ DIFF_EQUAL, commonprefix ] );
+		}
+		if ( commonsuffix ) {
+			diffs.push( [ DIFF_EQUAL, commonsuffix ] );
+		}
+		this.diffCleanupMerge( diffs );
+		return diffs;
+	};
+
+	/**
+	 * Reduce the number of edits by eliminating operationally trivial equalities.
+	 * @param {!Array.<!DiffMatchPatch.Diff>} diffs Array of diff tuples.
+	 */
+	DiffMatchPatch.prototype.diffCleanupEfficiency = function( diffs ) {
+		var changes, equalities, equalitiesLength, lastequality,
+			pointer, preIns, preDel, postIns, postDel;
+		changes = false;
+		equalities = []; // Stack of indices where equalities are found.
+		equalitiesLength = 0; // Keeping our own length var is faster in JS.
+		/** @type {?string} */
+		lastequality = null;
+
+		// Always equal to diffs[equalities[equalitiesLength - 1]][1]
+		pointer = 0; // Index of current position.
+
+		// Is there an insertion operation before the last equality.
+		preIns = false;
+
+		// Is there a deletion operation before the last equality.
+		preDel = false;
+
+		// Is there an insertion operation after the last equality.
+		postIns = false;
+
+		// Is there a deletion operation after the last equality.
+		postDel = false;
+		while ( pointer < diffs.length ) {
+
+			// Equality found.
+			if ( diffs[ pointer ][ 0 ] === DIFF_EQUAL ) {
+				if ( diffs[ pointer ][ 1 ].length < 4 && ( postIns || postDel ) ) {
+
+					// Candidate found.
+					equalities[ equalitiesLength++ ] = pointer;
+					preIns = postIns;
+					preDel = postDel;
+					lastequality = diffs[ pointer ][ 1 ];
+				} else {
+
+					// Not a candidate, and can never become one.
+					equalitiesLength = 0;
+					lastequality = null;
+				}
+				postIns = postDel = false;
+
+			// An insertion or deletion.
+			} else {
+
+				if ( diffs[ pointer ][ 0 ] === DIFF_DELETE ) {
+					postDel = true;
+				} else {
+					postIns = true;
+				}
+
+				/*
+				 * Five types to be split:
+				 * <ins>A</ins><del>B</del>XY<ins>C</ins><del>D</del>
+				 * <ins>A</ins>X<ins>C</ins><del>D</del>
+				 * <ins>A</ins><del>B</del>X<ins>C</ins>
+				 * <ins>A</del>X<ins>C</ins><del>D</del>
+				 * <ins>A</ins><del>B</del>X<del>C</del>
+				 */
+				if ( lastequality && ( ( preIns && preDel && postIns && postDel ) ||
+						( ( lastequality.length < 2 ) &&
+						( preIns + preDel + postIns + postDel ) === 3 ) ) ) {
+
+					// Duplicate record.
+					diffs.splice(
+						equalities[ equalitiesLength - 1 ],
+						0,
+						[ DIFF_DELETE, lastequality ]
+					);
+
+					// Change second copy to insert.
+					diffs[ equalities[ equalitiesLength - 1 ] + 1 ][ 0 ] = DIFF_INSERT;
+					equalitiesLength--; // Throw away the equality we just deleted;
+					lastequality = null;
+					if ( preIns && preDel ) {
+
+						// No changes made which could affect previous entry, keep going.
+						postIns = postDel = true;
+						equalitiesLength = 0;
+					} else {
+						equalitiesLength--; // Throw away the previous equality.
+						pointer = equalitiesLength > 0 ? equalities[ equalitiesLength - 1 ] : -1;
+						postIns = postDel = false;
+					}
+					changes = true;
+				}
+			}
+			pointer++;
+		}
+
+		if ( changes ) {
+			this.diffCleanupMerge( diffs );
+		}
+	};
+
+	/**
+	 * Convert a diff array into a pretty HTML report.
+	 * @param {!Array.<!DiffMatchPatch.Diff>} diffs Array of diff tuples.
+	 * @param {integer} string to be beautified.
+	 * @return {string} HTML representation.
+	 */
+	DiffMatchPatch.prototype.diffPrettyHtml = function( diffs ) {
+		var op, data, x,
+			html = [];
+		for ( x = 0; x < diffs.length; x++ ) {
+			op = diffs[ x ][ 0 ]; // Operation (insert, delete, equal)
+			data = diffs[ x ][ 1 ]; // Text of change.
+			switch ( op ) {
+			case DIFF_INSERT:
+				html[ x ] = "<ins>" + escapeText( data ) + "</ins>";
+				break;
+			case DIFF_DELETE:
+				html[ x ] = "<del>" + escapeText( data ) + "</del>";
+				break;
+			case DIFF_EQUAL:
+				html[ x ] = "<span>" + escapeText( data ) + "</span>";
+				break;
+			}
+		}
+		return html.join( "" );
+	};
+
+	/**
+	 * Determine the common prefix of two strings.
+	 * @param {string} text1 First string.
+	 * @param {string} text2 Second string.
+	 * @return {number} The number of characters common to the start of each
+	 *     string.
+	 */
+	DiffMatchPatch.prototype.diffCommonPrefix = function( text1, text2 ) {
+		var pointermid, pointermax, pointermin, pointerstart;
+
+		// Quick check for common null cases.
+		if ( !text1 || !text2 || text1.charAt( 0 ) !== text2.charAt( 0 ) ) {
+			return 0;
+		}
+
+		// Binary search.
+		// Performance analysis: https://neil.fraser.name/news/2007/10/09/
+		pointermin = 0;
+		pointermax = Math.min( text1.length, text2.length );
+		pointermid = pointermax;
+		pointerstart = 0;
+		while ( pointermin < pointermid ) {
+			if ( text1.substring( pointerstart, pointermid ) ===
+					text2.substring( pointerstart, pointermid ) ) {
+				pointermin = pointermid;
+				pointerstart = pointermin;
+			} else {
+				pointermax = pointermid;
+			}
+			pointermid = Math.floor( ( pointermax - pointermin ) / 2 + pointermin );
+		}
+		return pointermid;
+	};
+
+	/**
+	 * Determine the common suffix of two strings.
+	 * @param {string} text1 First string.
+	 * @param {string} text2 Second string.
+	 * @return {number} The number of characters common to the end of each string.
+	 */
+	DiffMatchPatch.prototype.diffCommonSuffix = function( text1, text2 ) {
+		var pointermid, pointermax, pointermin, pointerend;
+
+		// Quick check for common null cases.
+		if ( !text1 ||
+				!text2 ||
+				text1.charAt( text1.length - 1 ) !== text2.charAt( text2.length - 1 ) ) {
+			return 0;
+		}
+
+		// Binary search.
+		// Performance analysis: https://neil.fraser.name/news/2007/10/09/
+		pointermin = 0;
+		pointermax = Math.min( text1.length, text2.length );
+		pointermid = pointermax;
+		pointerend = 0;
+		while ( pointermin < pointermid ) {
+			if ( text1.substring( text1.length - pointermid, text1.length - pointerend ) ===
+					text2.substring( text2.length - pointermid, text2.length - pointerend ) ) {
+				pointermin = pointermid;
+				pointerend = pointermin;
+			} else {
+				pointermax = pointermid;
+			}
+			pointermid = Math.floor( ( pointermax - pointermin ) / 2 + pointermin );
+		}
+		return pointermid;
+	};
+
+	/**
+	 * Find the differences between two texts.  Assumes that the texts do not
+	 * have any common prefix or suffix.
+	 * @param {string} text1 Old string to be diffed.
+	 * @param {string} text2 New string to be diffed.
+	 * @param {boolean} checklines Speedup flag.  If false, then don't run a
+	 *     line-level diff first to identify the changed areas.
+	 *     If true, then run a faster, slightly less optimal diff.
+	 * @param {number} deadline Time when the diff should be complete by.
+	 * @return {!Array.<!DiffMatchPatch.Diff>} Array of diff tuples.
+	 * @private
+	 */
+	DiffMatchPatch.prototype.diffCompute = function( text1, text2, checklines, deadline ) {
+		var diffs, longtext, shorttext, i, hm,
+			text1A, text2A, text1B, text2B,
+			midCommon, diffsA, diffsB;
+
+		if ( !text1 ) {
+
+			// Just add some text (speedup).
+			return [
+				[ DIFF_INSERT, text2 ]
+			];
+		}
+
+		if ( !text2 ) {
+
+			// Just delete some text (speedup).
+			return [
+				[ DIFF_DELETE, text1 ]
+			];
+		}
+
+		longtext = text1.length > text2.length ? text1 : text2;
+		shorttext = text1.length > text2.length ? text2 : text1;
+		i = longtext.indexOf( shorttext );
+		if ( i !== -1 ) {
+
+			// Shorter text is inside the longer text (speedup).
+			diffs = [
+				[ DIFF_INSERT, longtext.substring( 0, i ) ],
+				[ DIFF_EQUAL, shorttext ],
+				[ DIFF_INSERT, longtext.substring( i + shorttext.length ) ]
+			];
+
+			// Swap insertions for deletions if diff is reversed.
+			if ( text1.length > text2.length ) {
+				diffs[ 0 ][ 0 ] = diffs[ 2 ][ 0 ] = DIFF_DELETE;
+			}
+			return diffs;
+		}
+
+		if ( shorttext.length === 1 ) {
+
+			// Single character string.
+			// After the previous speedup, the character can't be an equality.
+			return [
+				[ DIFF_DELETE, text1 ],
+				[ DIFF_INSERT, text2 ]
+			];
+		}
+
+		// Check to see if the problem can be split in two.
+		hm = this.diffHalfMatch( text1, text2 );
+		if ( hm ) {
+
+			// A half-match was found, sort out the return data.
+			text1A = hm[ 0 ];
+			text1B = hm[ 1 ];
+			text2A = hm[ 2 ];
+			text2B = hm[ 3 ];
+			midCommon = hm[ 4 ];
+
+			// Send both pairs off for separate processing.
+			diffsA = this.DiffMain( text1A, text2A, checklines, deadline );
+			diffsB = this.DiffMain( text1B, text2B, checklines, deadline );
+
+			// Merge the results.
+			return diffsA.concat( [
+				[ DIFF_EQUAL, midCommon ]
+			], diffsB );
+		}
+
+		if ( checklines && text1.length > 100 && text2.length > 100 ) {
+			return this.diffLineMode( text1, text2, deadline );
+		}
+
+		return this.diffBisect( text1, text2, deadline );
+	};
+
+	/**
+	 * Do the two texts share a substring which is at least half the length of the
+	 * longer text?
+	 * This speedup can produce non-minimal diffs.
+	 * @param {string} text1 First string.
+	 * @param {string} text2 Second string.
+	 * @return {Array.<string>} Five element Array, containing the prefix of
+	 *     text1, the suffix of text1, the prefix of text2, the suffix of
+	 *     text2 and the common middle.  Or null if there was no match.
+	 * @private
+	 */
+	DiffMatchPatch.prototype.diffHalfMatch = function( text1, text2 ) {
+		var longtext, shorttext, dmp,
+			text1A, text2B, text2A, text1B, midCommon,
+			hm1, hm2, hm;
+
+		longtext = text1.length > text2.length ? text1 : text2;
+		shorttext = text1.length > text2.length ? text2 : text1;
+		if ( longtext.length < 4 || shorttext.length * 2 < longtext.length ) {
+			return null; // Pointless.
+		}
+		dmp = this; // 'this' becomes 'window' in a closure.
+
+		/**
+		 * Does a substring of shorttext exist within longtext such that the substring
+		 * is at least half the length of longtext?
+		 * Closure, but does not reference any external variables.
+		 * @param {string} longtext Longer string.
+		 * @param {string} shorttext Shorter string.
+		 * @param {number} i Start index of quarter length substring within longtext.
+		 * @return {Array.<string>} Five element Array, containing the prefix of
+		 *     longtext, the suffix of longtext, the prefix of shorttext, the suffix
+		 *     of shorttext and the common middle.  Or null if there was no match.
+		 * @private
+		 */
+		function diffHalfMatchI( longtext, shorttext, i ) {
+			var seed, j, bestCommon, prefixLength, suffixLength,
+				bestLongtextA, bestLongtextB, bestShorttextA, bestShorttextB;
+
+			// Start with a 1/4 length substring at position i as a seed.
+			seed = longtext.substring( i, i + Math.floor( longtext.length / 4 ) );
+			j = -1;
+			bestCommon = "";
+			while ( ( j = shorttext.indexOf( seed, j + 1 ) ) !== -1 ) {
+				prefixLength = dmp.diffCommonPrefix( longtext.substring( i ),
+					shorttext.substring( j ) );
+				suffixLength = dmp.diffCommonSuffix( longtext.substring( 0, i ),
+					shorttext.substring( 0, j ) );
+				if ( bestCommon.length < suffixLength + prefixLength ) {
+					bestCommon = shorttext.substring( j - suffixLength, j ) +
+						shorttext.substring( j, j + prefixLength );
+					bestLongtextA = longtext.substring( 0, i - suffixLength );
+					bestLongtextB = longtext.substring( i + prefixLength );
+					bestShorttextA = shorttext.substring( 0, j - suffixLength );
+					bestShorttextB = shorttext.substring( j + prefixLength );
+				}
+			}
+			if ( bestCommon.length * 2 >= longtext.length ) {
+				return [ bestLongtextA, bestLongtextB,
+					bestShorttextA, bestShorttextB, bestCommon
+				];
+			} else {
+				return null;
+			}
+		}
+
+		// First check if the second quarter is the seed for a half-match.
+		hm1 = diffHalfMatchI( longtext, shorttext,
+			Math.ceil( longtext.length / 4 ) );
+
+		// Check again based on the third quarter.
+		hm2 = diffHalfMatchI( longtext, shorttext,
+			Math.ceil( longtext.length / 2 ) );
+		if ( !hm1 && !hm2 ) {
+			return null;
+		} else if ( !hm2 ) {
+			hm = hm1;
+		} else if ( !hm1 ) {
+			hm = hm2;
+		} else {
+
+			// Both matched.  Select the longest.
+			hm = hm1[ 4 ].length > hm2[ 4 ].length ? hm1 : hm2;
+		}
+
+		// A half-match was found, sort out the return data.
+		text1A, text1B, text2A, text2B;
+		if ( text1.length > text2.length ) {
+			text1A = hm[ 0 ];
+			text1B = hm[ 1 ];
+			text2A = hm[ 2 ];
+			text2B = hm[ 3 ];
+		} else {
+			text2A = hm[ 0 ];
+			text2B = hm[ 1 ];
+			text1A = hm[ 2 ];
+			text1B = hm[ 3 ];
+		}
+		midCommon = hm[ 4 ];
+		return [ text1A, text1B, text2A, text2B, midCommon ];
+	};
+
+	/**
+	 * Do a quick line-level diff on both strings, then rediff the parts for
+	 * greater accuracy.
+	 * This speedup can produce non-minimal diffs.
+	 * @param {string} text1 Old string to be diffed.
+	 * @param {string} text2 New string to be diffed.
+	 * @param {number} deadline Time when the diff should be complete by.
+	 * @return {!Array.<!DiffMatchPatch.Diff>} Array of diff tuples.
+	 * @private
+	 */
+	DiffMatchPatch.prototype.diffLineMode = function( text1, text2, deadline ) {
+		var a, diffs, linearray, pointer, countInsert,
+			countDelete, textInsert, textDelete, j;
+
+		// Scan the text on a line-by-line basis first.
+		a = this.diffLinesToChars( text1, text2 );
+		text1 = a.chars1;
+		text2 = a.chars2;
+		linearray = a.lineArray;
+
+		diffs = this.DiffMain( text1, text2, false, deadline );
+
+		// Convert the diff back to original text.
+		this.diffCharsToLines( diffs, linearray );
+
+		// Eliminate freak matches (e.g. blank lines)
+		this.diffCleanupSemantic( diffs );
+
+		// Rediff any replacement blocks, this time character-by-character.
+		// Add a dummy entry at the end.
+		diffs.push( [ DIFF_EQUAL, "" ] );
+		pointer = 0;
+		countDelete = 0;
+		countInsert = 0;
+		textDelete = "";
+		textInsert = "";
+		while ( pointer < diffs.length ) {
+			switch ( diffs[ pointer ][ 0 ] ) {
+			case DIFF_INSERT:
+				countInsert++;
+				textInsert += diffs[ pointer ][ 1 ];
+				break;
+			case DIFF_DELETE:
+				countDelete++;
+				textDelete += diffs[ pointer ][ 1 ];
+				break;
+			case DIFF_EQUAL:
+
+				// Upon reaching an equality, check for prior redundancies.
+				if ( countDelete >= 1 && countInsert >= 1 ) {
+
+					// Delete the offending records and add the merged ones.
+					diffs.splice( pointer - countDelete - countInsert,
+						countDelete + countInsert );
+					pointer = pointer - countDelete - countInsert;
+					a = this.DiffMain( textDelete, textInsert, false, deadline );
+					for ( j = a.length - 1; j >= 0; j-- ) {
+						diffs.splice( pointer, 0, a[ j ] );
+					}
+					pointer = pointer + a.length;
+				}
+				countInsert = 0;
+				countDelete = 0;
+				textDelete = "";
+				textInsert = "";
+				break;
+			}
+			pointer++;
+		}
+		diffs.pop(); // Remove the dummy entry at the end.
+
+		return diffs;
+	};
+
+	/**
+	 * Find the 'middle snake' of a diff, split the problem in two
+	 * and return the recursively constructed diff.
+	 * See Myers 1986 paper: An O(ND) Difference Algorithm and Its Variations.
+	 * @param {string} text1 Old string to be diffed.
+	 * @param {string} text2 New string to be diffed.
+	 * @param {number} deadline Time at which to bail if not yet complete.
+	 * @return {!Array.<!DiffMatchPatch.Diff>} Array of diff tuples.
+	 * @private
+	 */
+	DiffMatchPatch.prototype.diffBisect = function( text1, text2, deadline ) {
+		var text1Length, text2Length, maxD, vOffset, vLength,
+			v1, v2, x, delta, front, k1start, k1end, k2start,
+			k2end, k2Offset, k1Offset, x1, x2, y1, y2, d, k1, k2;
+
+		// Cache the text lengths to prevent multiple calls.
+		text1Length = text1.length;
+		text2Length = text2.length;
+		maxD = Math.ceil( ( text1Length + text2Length ) / 2 );
+		vOffset = maxD;
+		vLength = 2 * maxD;
+		v1 = new Array( vLength );
+		v2 = new Array( vLength );
+
+		// Setting all elements to -1 is faster in Chrome & Firefox than mixing
+		// integers and undefined.
+		for ( x = 0; x < vLength; x++ ) {
+			v1[ x ] = -1;
+			v2[ x ] = -1;
+		}
+		v1[ vOffset + 1 ] = 0;
+		v2[ vOffset + 1 ] = 0;
+		delta = text1Length - text2Length;
+
+		// If the total number of characters is odd, then the front path will collide
+		// with the reverse path.
+		front = ( delta % 2 !== 0 );
+
+		// Offsets for start and end of k loop.
+		// Prevents mapping of space beyond the grid.
+		k1start = 0;
+		k1end = 0;
+		k2start = 0;
+		k2end = 0;
+		for ( d = 0; d < maxD; d++ ) {
+
+			// Bail out if deadline is reached.
+			if ( ( new Date() ).getTime() > deadline ) {
+				break;
+			}
+
+			// Walk the front path one step.
+			for ( k1 = -d + k1start; k1 <= d - k1end; k1 += 2 ) {
+				k1Offset = vOffset + k1;
+				if ( k1 === -d || ( k1 !== d && v1[ k1Offset - 1 ] < v1[ k1Offset + 1 ] ) ) {
+					x1 = v1[ k1Offset + 1 ];
+				} else {
+					x1 = v1[ k1Offset - 1 ] + 1;
+				}
+				y1 = x1 - k1;
+				while ( x1 < text1Length && y1 < text2Length &&
+					text1.charAt( x1 ) === text2.charAt( y1 ) ) {
+					x1++;
+					y1++;
+				}
+				v1[ k1Offset ] = x1;
+				if ( x1 > text1Length ) {
+
+					// Ran off the right of the graph.
+					k1end += 2;
+				} else if ( y1 > text2Length ) {
+
+					// Ran off the bottom of the graph.
+					k1start += 2;
+				} else if ( front ) {
+					k2Offset = vOffset + delta - k1;
+					if ( k2Offset >= 0 && k2Offset < vLength && v2[ k2Offset ] !== -1 ) {
+
+						// Mirror x2 onto top-left coordinate system.
+						x2 = text1Length - v2[ k2Offset ];
+						if ( x1 >= x2 ) {
+
+							// Overlap detected.
+							return this.diffBisectSplit( text1, text2, x1, y1, deadline );
+						}
+					}
+				}
+			}
+
+			// Walk the reverse path one step.
+			for ( k2 = -d + k2start; k2 <= d - k2end; k2 += 2 ) {
+				k2Offset = vOffset + k2;
+				if ( k2 === -d || ( k2 !== d && v2[ k2Offset - 1 ] < v2[ k2Offset + 1 ] ) ) {
+					x2 = v2[ k2Offset + 1 ];
+				} else {
+					x2 = v2[ k2Offset - 1 ] + 1;
+				}
+				y2 = x2 - k2;
+				while ( x2 < text1Length && y2 < text2Length &&
+					text1.charAt( text1Length - x2 - 1 ) ===
+					text2.charAt( text2Length - y2 - 1 ) ) {
+					x2++;
+					y2++;
+				}
+				v2[ k2Offset ] = x2;
+				if ( x2 > text1Length ) {
+
+					// Ran off the left of the graph.
+					k2end += 2;
+				} else if ( y2 > text2Length ) {
+
+					// Ran off the top of the graph.
+					k2start += 2;
+				} else if ( !front ) {
+					k1Offset = vOffset + delta - k2;
+					if ( k1Offset >= 0 && k1Offset < vLength && v1[ k1Offset ] !== -1 ) {
+						x1 = v1[ k1Offset ];
+						y1 = vOffset + x1 - k1Offset;
+
+						// Mirror x2 onto top-left coordinate system.
+						x2 = text1Length - x2;
+						if ( x1 >= x2 ) {
+
+							// Overlap detected.
+							return this.diffBisectSplit( text1, text2, x1, y1, deadline );
+						}
+					}
+				}
+			}
+		}
+
+		// Diff took too long and hit the deadline or
+		// number of diffs equals number of characters, no commonality at all.
+		return [
+			[ DIFF_DELETE, text1 ],
+			[ DIFF_INSERT, text2 ]
+		];
+	};
+
+	/**
+	 * Given the location of the 'middle snake', split the diff in two parts
+	 * and recurse.
+	 * @param {string} text1 Old string to be diffed.
+	 * @param {string} text2 New string to be diffed.
+	 * @param {number} x Index of split point in text1.
+	 * @param {number} y Index of split point in text2.
+	 * @param {number} deadline Time at which to bail if not yet complete.
+	 * @return {!Array.<!DiffMatchPatch.Diff>} Array of diff tuples.
+	 * @private
+	 */
+	DiffMatchPatch.prototype.diffBisectSplit = function( text1, text2, x, y, deadline ) {
+		var text1a, text1b, text2a, text2b, diffs, diffsb;
+		text1a = text1.substring( 0, x );
+		text2a = text2.substring( 0, y );
+		text1b = text1.substring( x );
+		text2b = text2.substring( y );
+
+		// Compute both diffs serially.
+		diffs = this.DiffMain( text1a, text2a, false, deadline );
+		diffsb = this.DiffMain( text1b, text2b, false, deadline );
+
+		return diffs.concat( diffsb );
+	};
+
+	/**
+	 * Reduce the number of edits by eliminating semantically trivial equalities.
+	 * @param {!Array.<!DiffMatchPatch.Diff>} diffs Array of diff tuples.
+	 */
+	DiffMatchPatch.prototype.diffCleanupSemantic = function( diffs ) {
+		var changes, equalities, equalitiesLength, lastequality,
+			pointer, lengthInsertions2, lengthDeletions2, lengthInsertions1,
+			lengthDeletions1, deletion, insertion, overlapLength1, overlapLength2;
+		changes = false;
+		equalities = []; // Stack of indices where equalities are found.
+		equalitiesLength = 0; // Keeping our own length var is faster in JS.
+		/** @type {?string} */
+		lastequality = null;
+
+		// Always equal to diffs[equalities[equalitiesLength - 1]][1]
+		pointer = 0; // Index of current position.
+
+		// Number of characters that changed prior to the equality.
+		lengthInsertions1 = 0;
+		lengthDeletions1 = 0;
+
+		// Number of characters that changed after the equality.
+		lengthInsertions2 = 0;
+		lengthDeletions2 = 0;
+		while ( pointer < diffs.length ) {
+			if ( diffs[ pointer ][ 0 ] === DIFF_EQUAL ) { // Equality found.
+				equalities[ equalitiesLength++ ] = pointer;
+				lengthInsertions1 = lengthInsertions2;
+				lengthDeletions1 = lengthDeletions2;
+				lengthInsertions2 = 0;
+				lengthDeletions2 = 0;
+				lastequality = diffs[ pointer ][ 1 ];
+			} else { // An insertion or deletion.
+				if ( diffs[ pointer ][ 0 ] === DIFF_INSERT ) {
+					lengthInsertions2 += diffs[ pointer ][ 1 ].length;
+				} else {
+					lengthDeletions2 += diffs[ pointer ][ 1 ].length;
+				}
+
+				// Eliminate an equality that is smaller or equal to the edits on both
+				// sides of it.
+				if ( lastequality && ( lastequality.length <=
+						Math.max( lengthInsertions1, lengthDeletions1 ) ) &&
+						( lastequality.length <= Math.max( lengthInsertions2,
+							lengthDeletions2 ) ) ) {
+
+					// Duplicate record.
+					diffs.splice(
+						equalities[ equalitiesLength - 1 ],
+						0,
+						[ DIFF_DELETE, lastequality ]
+					);
+
+					// Change second copy to insert.
+					diffs[ equalities[ equalitiesLength - 1 ] + 1 ][ 0 ] = DIFF_INSERT;
+
+					// Throw away the equality we just deleted.
+					equalitiesLength--;
+
+					// Throw away the previous equality (it needs to be reevaluated).
+					equalitiesLength--;
+					pointer = equalitiesLength > 0 ? equalities[ equalitiesLength - 1 ] : -1;
+
+					// Reset the counters.
+					lengthInsertions1 = 0;
+					lengthDeletions1 = 0;
+					lengthInsertions2 = 0;
+					lengthDeletions2 = 0;
+					lastequality = null;
+					changes = true;
+				}
+			}
+			pointer++;
+		}
+
+		// Normalize the diff.
+		if ( changes ) {
+			this.diffCleanupMerge( diffs );
+		}
+
+		// Find any overlaps between deletions and insertions.
+		// e.g: <del>abcxxx</del><ins>xxxdef</ins>
+		//   -> <del>abc</del>xxx<ins>def</ins>
+		// e.g: <del>xxxabc</del><ins>defxxx</ins>
+		//   -> <ins>def</ins>xxx<del>abc</del>
+		// Only extract an overlap if it is as big as the edit ahead or behind it.
+		pointer = 1;
+		while ( pointer < diffs.length ) {
+			if ( diffs[ pointer - 1 ][ 0 ] === DIFF_DELETE &&
+					diffs[ pointer ][ 0 ] === DIFF_INSERT ) {
+				deletion = diffs[ pointer - 1 ][ 1 ];
+				insertion = diffs[ pointer ][ 1 ];
+				overlapLength1 = this.diffCommonOverlap( deletion, insertion );
+				overlapLength2 = this.diffCommonOverlap( insertion, deletion );
+				if ( overlapLength1 >= overlapLength2 ) {
+					if ( overlapLength1 >= deletion.length / 2 ||
+							overlapLength1 >= insertion.length / 2 ) {
+
+						// Overlap found.  Insert an equality and trim the surrounding edits.
+						diffs.splice(
+							pointer,
+							0,
+							[ DIFF_EQUAL, insertion.substring( 0, overlapLength1 ) ]
+						);
+						diffs[ pointer - 1 ][ 1 ] =
+							deletion.substring( 0, deletion.length - overlapLength1 );
+						diffs[ pointer + 1 ][ 1 ] = insertion.substring( overlapLength1 );
+						pointer++;
+					}
+				} else {
+					if ( overlapLength2 >= deletion.length / 2 ||
+							overlapLength2 >= insertion.length / 2 ) {
+
+						// Reverse overlap found.
+						// Insert an equality and swap and trim the surrounding edits.
+						diffs.splice(
+							pointer,
+							0,
+							[ DIFF_EQUAL, deletion.substring( 0, overlapLength2 ) ]
+						);
+
+						diffs[ pointer - 1 ][ 0 ] = DIFF_INSERT;
+						diffs[ pointer - 1 ][ 1 ] =
+							insertion.substring( 0, insertion.length - overlapLength2 );
+						diffs[ pointer + 1 ][ 0 ] = DIFF_DELETE;
+						diffs[ pointer + 1 ][ 1 ] =
+							deletion.substring( overlapLength2 );
+						pointer++;
+					}
+				}
+				pointer++;
+			}
+			pointer++;
+		}
+	};
+
+	/**
+	 * Determine if the suffix of one string is the prefix of another.
+	 * @param {string} text1 First string.
+	 * @param {string} text2 Second string.
+	 * @return {number} The number of characters common to the end of the first
+	 *     string and the start of the second string.
+	 * @private
+	 */
+	DiffMatchPatch.prototype.diffCommonOverlap = function( text1, text2 ) {
+		var text1Length, text2Length, textLength,
+			best, length, pattern, found;
+
+		// Cache the text lengths to prevent multiple calls.
+		text1Length = text1.length;
+		text2Length = text2.length;
+
+		// Eliminate the null case.
+		if ( text1Length === 0 || text2Length === 0 ) {
+			return 0;
+		}
+
+		// Truncate the longer string.
+		if ( text1Length > text2Length ) {
+			text1 = text1.substring( text1Length - text2Length );
+		} else if ( text1Length < text2Length ) {
+			text2 = text2.substring( 0, text1Length );
+		}
+		textLength = Math.min( text1Length, text2Length );
+
+		// Quick check for the worst case.
+		if ( text1 === text2 ) {
+			return textLength;
+		}
+
+		// Start by looking for a single character match
+		// and increase length until no match is found.
+		// Performance analysis: https://neil.fraser.name/news/2010/11/04/
+		best = 0;
+		length = 1;
+		while ( true ) {
+			pattern = text1.substring( textLength - length );
+			found = text2.indexOf( pattern );
+			if ( found === -1 ) {
+				return best;
+			}
+			length += found;
+			if ( found === 0 || text1.substring( textLength - length ) ===
+					text2.substring( 0, length ) ) {
+				best = length;
+				length++;
+			}
+		}
+	};
+
+	/**
+	 * Split two texts into an array of strings.  Reduce the texts to a string of
+	 * hashes where each Unicode character represents one line.
+	 * @param {string} text1 First string.
+	 * @param {string} text2 Second string.
+	 * @return {{chars1: string, chars2: string, lineArray: !Array.<string>}}
+	 *     An object containing the encoded text1, the encoded text2 and
+	 *     the array of unique strings.
+	 *     The zeroth element of the array of unique strings is intentionally blank.
+	 * @private
+	 */
+	DiffMatchPatch.prototype.diffLinesToChars = function( text1, text2 ) {
+		var lineArray, lineHash, chars1, chars2;
+		lineArray = []; // E.g. lineArray[4] === 'Hello\n'
+		lineHash = {};  // E.g. lineHash['Hello\n'] === 4
+
+		// '\x00' is a valid character, but various debuggers don't like it.
+		// So we'll insert a junk entry to avoid generating a null character.
+		lineArray[ 0 ] = "";
+
+		/**
+		 * Split a text into an array of strings.  Reduce the texts to a string of
+		 * hashes where each Unicode character represents one line.
+		 * Modifies linearray and linehash through being a closure.
+		 * @param {string} text String to encode.
+		 * @return {string} Encoded string.
+		 * @private
+		 */
+		function diffLinesToCharsMunge( text ) {
+			var chars, lineStart, lineEnd, lineArrayLength, line;
+			chars = "";
+
+			// Walk the text, pulling out a substring for each line.
+			// text.split('\n') would would temporarily double our memory footprint.
+			// Modifying text would create many large strings to garbage collect.
+			lineStart = 0;
+			lineEnd = -1;
+
+			// Keeping our own length variable is faster than looking it up.
+			lineArrayLength = lineArray.length;
+			while ( lineEnd < text.length - 1 ) {
+				lineEnd = text.indexOf( "\n", lineStart );
+				if ( lineEnd === -1 ) {
+					lineEnd = text.length - 1;
+				}
+				line = text.substring( lineStart, lineEnd + 1 );
+				lineStart = lineEnd + 1;
+
+				if ( lineHash.hasOwnProperty ? lineHash.hasOwnProperty( line ) :
+							( lineHash[ line ] !== undefined ) ) {
+					chars += String.fromCharCode( lineHash[ line ] );
+				} else {
+					chars += String.fromCharCode( lineArrayLength );
+					lineHash[ line ] = lineArrayLength;
+					lineArray[ lineArrayLength++ ] = line;
+				}
+			}
+			return chars;
+		}
+
+		chars1 = diffLinesToCharsMunge( text1 );
+		chars2 = diffLinesToCharsMunge( text2 );
+		return {
+			chars1: chars1,
+			chars2: chars2,
+			lineArray: lineArray
+		};
+	};
+
+	/**
+	 * Rehydrate the text in a diff from a string of line hashes to real lines of
+	 * text.
+	 * @param {!Array.<!DiffMatchPatch.Diff>} diffs Array of diff tuples.
+	 * @param {!Array.<string>} lineArray Array of unique strings.
+	 * @private
+	 */
+	DiffMatchPatch.prototype.diffCharsToLines = function( diffs, lineArray ) {
+		var x, chars, text, y;
+		for ( x = 0; x < diffs.length; x++ ) {
+			chars = diffs[ x ][ 1 ];
+			text = [];
+			for ( y = 0; y < chars.length; y++ ) {
+				text[ y ] = lineArray[ chars.charCodeAt( y ) ];
+			}
+			diffs[ x ][ 1 ] = text.join( "" );
+		}
+	};
+
+	/**
+	 * Reorder and merge like edit sections.  Merge equalities.
+	 * Any edit section can move as long as it doesn't cross an equality.
+	 * @param {!Array.<!DiffMatchPatch.Diff>} diffs Array of diff tuples.
+	 */
+	DiffMatchPatch.prototype.diffCleanupMerge = function( diffs ) {
+		var pointer, countDelete, countInsert, textInsert, textDelete,
+			commonlength, changes, diffPointer, position;
+		diffs.push( [ DIFF_EQUAL, "" ] ); // Add a dummy entry at the end.
+		pointer = 0;
+		countDelete = 0;
+		countInsert = 0;
+		textDelete = "";
+		textInsert = "";
+		commonlength;
+		while ( pointer < diffs.length ) {
+			switch ( diffs[ pointer ][ 0 ] ) {
+			case DIFF_INSERT:
+				countInsert++;
+				textInsert += diffs[ pointer ][ 1 ];
+				pointer++;
+				break;
+			case DIFF_DELETE:
+				countDelete++;
+				textDelete += diffs[ pointer ][ 1 ];
+				pointer++;
+				break;
+			case DIFF_EQUAL:
+
+				// Upon reaching an equality, check for prior redundancies.
+				if ( countDelete + countInsert > 1 ) {
+					if ( countDelete !== 0 && countInsert !== 0 ) {
+
+						// Factor out any common prefixes.
+						commonlength = this.diffCommonPrefix( textInsert, textDelete );
+						if ( commonlength !== 0 ) {
+							if ( ( pointer - countDelete - countInsert ) > 0 &&
+									diffs[ pointer - countDelete - countInsert - 1 ][ 0 ] ===
+									DIFF_EQUAL ) {
+								diffs[ pointer - countDelete - countInsert - 1 ][ 1 ] +=
+									textInsert.substring( 0, commonlength );
+							} else {
+								diffs.splice( 0, 0, [ DIFF_EQUAL,
+									textInsert.substring( 0, commonlength )
+								] );
+								pointer++;
+							}
+							textInsert = textInsert.substring( commonlength );
+							textDelete = textDelete.substring( commonlength );
+						}
+
+						// Factor out any common suffixies.
+						commonlength = this.diffCommonSuffix( textInsert, textDelete );
+						if ( commonlength !== 0 ) {
+							diffs[ pointer ][ 1 ] = textInsert.substring( textInsert.length -
+									commonlength ) + diffs[ pointer ][ 1 ];
+							textInsert = textInsert.substring( 0, textInsert.length -
+								commonlength );
+							textDelete = textDelete.substring( 0, textDelete.length -
+								commonlength );
+						}
+					}
+
+					// Delete the offending records and add the merged ones.
+					if ( countDelete === 0 ) {
+						diffs.splice( pointer - countInsert,
+							countDelete + countInsert, [ DIFF_INSERT, textInsert ] );
+					} else if ( countInsert === 0 ) {
+						diffs.splice( pointer - countDelete,
+							countDelete + countInsert, [ DIFF_DELETE, textDelete ] );
+					} else {
+						diffs.splice(
+							pointer - countDelete - countInsert,
+							countDelete + countInsert,
+							[ DIFF_DELETE, textDelete ], [ DIFF_INSERT, textInsert ]
+						);
+					}
+					pointer = pointer - countDelete - countInsert +
+						( countDelete ? 1 : 0 ) + ( countInsert ? 1 : 0 ) + 1;
+				} else if ( pointer !== 0 && diffs[ pointer - 1 ][ 0 ] === DIFF_EQUAL ) {
+
+					// Merge this equality with the previous one.
+					diffs[ pointer - 1 ][ 1 ] += diffs[ pointer ][ 1 ];
+					diffs.splice( pointer, 1 );
+				} else {
+					pointer++;
+				}
+				countInsert = 0;
+				countDelete = 0;
+				textDelete = "";
+				textInsert = "";
+				break;
+			}
+		}
+		if ( diffs[ diffs.length - 1 ][ 1 ] === "" ) {
+			diffs.pop(); // Remove the dummy entry at the end.
+		}
+
+		// Second pass: look for single edits surrounded on both sides by equalities
+		// which can be shifted sideways to eliminate an equality.
+		// e.g: A<ins>BA</ins>C -> <ins>AB</ins>AC
+		changes = false;
+		pointer = 1;
+
+		// Intentionally ignore the first and last element (don't need checking).
+		while ( pointer < diffs.length - 1 ) {
+			if ( diffs[ pointer - 1 ][ 0 ] === DIFF_EQUAL &&
+					diffs[ pointer + 1 ][ 0 ] === DIFF_EQUAL ) {
+
+				diffPointer = diffs[ pointer ][ 1 ];
+				position = diffPointer.substring(
+					diffPointer.length - diffs[ pointer - 1 ][ 1 ].length
+				);
+
+				// This is a single edit surrounded by equalities.
+				if ( position === diffs[ pointer - 1 ][ 1 ] ) {
+
+					// Shift the edit over the previous equality.
+					diffs[ pointer ][ 1 ] = diffs[ pointer - 1 ][ 1 ] +
+						diffs[ pointer ][ 1 ].substring( 0, diffs[ pointer ][ 1 ].length -
+							diffs[ pointer - 1 ][ 1 ].length );
+					diffs[ pointer + 1 ][ 1 ] =
+						diffs[ pointer - 1 ][ 1 ] + diffs[ pointer + 1 ][ 1 ];
+					diffs.splice( pointer - 1, 1 );
+					changes = true;
+				} else if ( diffPointer.substring( 0, diffs[ pointer + 1 ][ 1 ].length ) ===
+						diffs[ pointer + 1 ][ 1 ] ) {
+
+					// Shift the edit over the next equality.
+					diffs[ pointer - 1 ][ 1 ] += diffs[ pointer + 1 ][ 1 ];
+					diffs[ pointer ][ 1 ] =
+						diffs[ pointer ][ 1 ].substring( diffs[ pointer + 1 ][ 1 ].length ) +
+						diffs[ pointer + 1 ][ 1 ];
+					diffs.splice( pointer + 1, 1 );
+					changes = true;
+				}
+			}
+			pointer++;
+		}
+
+		// If shifts were made, the diff needs reordering and another shift sweep.
+		if ( changes ) {
+			this.diffCleanupMerge( diffs );
+		}
+	};
+
+	return function( o, n ) {
+		var diff, output, text;
+		diff = new DiffMatchPatch();
+		output = diff.DiffMain( o, n );
+		diff.diffCleanupEfficiency( output );
+		text = diff.diffPrettyHtml( output );
+
+		return text;
+	};
+}() );
+
+}() );
diff --git a/test/compatibility/stable/qunit.css b/test/compatibility/stable/qunit.css
index 8a4cedf..ae68fc4 100644
--- a/test/compatibility/stable/qunit.css
+++ b/test/compatibility/stable/qunit.css
@@ -1,12 +1,12 @@
 /*!
- * QUnit 1.23.0
+ * QUnit 1.23.1
  * https://qunitjs.com/
  *
  * Copyright jQuery Foundation and other contributors
  * Released under the MIT license
  * https://jquery.org/license
  *
- * Date: 2016-03-25T19:37Z
+ * Date: 2016-04-12T17:29Z
  */
 
 /** Font Family and Sizes */
diff --git a/test/compatibility/stable/qunit.js b/test/compatibility/stable/qunit.js
index 8569af8..5df0822 100644
--- a/test/compatibility/stable/qunit.js
+++ b/test/compatibility/stable/qunit.js
@@ -1,12 +1,12 @@
 /*!
- * QUnit 1.23.0
+ * QUnit 1.23.1
  * https://qunitjs.com/
  *
  * Copyright jQuery Foundation and other contributors
  * Released under the MIT license
  * https://jquery.org/license
  *
- * Date: 2016-03-25T19:37Z
+ * Date: 2016-04-12T17:29Z
  */
 
 ( function( global ) {
@@ -384,7 +384,7 @@ function verifyLoggingCallbacks() {
 QUnit.isLocal = !( defined.document && window.location.protocol !== "file:" );
 
 // Expose the current QUnit version
-QUnit.version = "1.23.0";
+QUnit.version = "1.23.1";
 
 extend( QUnit, {
 
@@ -394,7 +394,7 @@ extend( QUnit, {
 		var currentModule = config.currentModule;
 
 		if ( arguments.length === 2 ) {
-			if ( testEnvironment instanceof Function ) {
+			if ( objectType( testEnvironment ) === "function" ) {
 				executeNow = testEnvironment;
 				testEnvironment = undefined;
 			}
@@ -418,7 +418,7 @@ extend( QUnit, {
 			afterEach: setHook( module, "afterEach" )
 		};
 
-		if ( executeNow instanceof Function ) {
+		if ( objectType( executeNow ) === "function" ) {
 			config.moduleStack.push( module );
 			setCurrentModule( module );
 			executeNow.call( module.testEnvironment, moduleFns );
@@ -1624,7 +1624,7 @@ QUnit.assert = Assert.prototype = {
 // Known to us are: Closure Compiler, Narwhal
 ( function() {
 	/*jshint sub:true */
-	Assert.prototype.raises = Assert.prototype.throws;
+	Assert.prototype.raises = Assert.prototype [ "throws" ]; //jscs:ignore requireDotNotation
 }() );
 
 function errorString( error ) {