/*! * 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 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 ? "
" : "\n" : this.HTML ? " " : " "; }, // 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, " " ); } 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 ? "<" : "<", close = dump.HTML ? ">" : ">", 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 "'"; case "\"": return """; case "<": return "<"; case ">": return ">"; case "&": return "&"; } } ); } /** * @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 += ""; } else { urlConfigHtml += ""; } } 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 += "" + ""; 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 = "" + header.innerHTML + " "; } } 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...
 "; } } 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 "
Rerunning selected tests: " + escapeText( testId.join( ", " ) ) + " Run all tests
"; } 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 = "

" + escapeText( document.title ) + "

" + "

" + "
" + appendFilteredTest() + "

" + "
    "; } 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.
    ", "", details.passed, " assertions of ", details.total, " passed, ", details.failed, " 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 = "" + escapeText( module ) + ": "; } nameHtml += "" + escapeText( name ) + ""; 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:
    " : "Running:
    " ) + getNameHtml( details.name, details.module ); } } ); function stripHtml( string ) { // Strip tags, html entity and whitespaces return string.replace( /<\/?[^>]+(>|$)/g, "" ).replace( /\"/g, "" ).replace( /\s+/g, "" ); } QUnit.log( function( details ) { var assertList, assertLi, message, expected, actual, diff, showDiff = false, testItem = id( "qunit-test-output-" + details.testId ); if ( !testItem ) { return; } message = escapeText( details.message ) || ( details.result ? "okay" : "failed" ); message = "" + message + ""; message += "@ " + details.runtime + " ms"; // The pushFailure doesn't provide details.expected // when it calls, it's implicit to also not show expected and diff stuff // Also, we need to check details.expected existence, as it can exist and be undefined if ( !details.result && hasOwn.call( details, "expected" ) ) { if ( details.negative ) { expected = "NOT " + QUnit.dump.parse( details.expected ); } else { expected = QUnit.dump.parse( details.expected ); } actual = QUnit.dump.parse( details.actual ); message += ""; if ( actual !== expected ) { message += ""; // Don't show diff if actual or expected are booleans if ( !( /^(true|false)$/.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 += ""; } } else if ( expected.indexOf( "[object Array]" ) !== -1 || expected.indexOf( "[object Object]" ) !== -1 ) { message += ""; } else { message += ""; } if ( details.source ) { message += ""; } message += "
    Expected: 
    " +
			escapeText( expected ) +
			"
    Result: 
    " +
				escapeText( actual ) + "
    Diff: 
    " +
					diff + "
    Message: " + "Diff suppressed as the depth of object is more than current max depth (" + QUnit.config.maxDepth + ").

    Hint: Use QUnit.dump.maxDepth to " + " run with a higher max depth or " + "Rerun without max depth.

    Message: " + "Diff suppressed as the expected and actual results have an equivalent" + " serialization
    Source: 
    " +
				escapeText( details.source ) + "
    "; // This occurs when pushFailure is set and we have an extracted stack trace } else if ( !details.result && details.source ) { message += "" + "" + "
    Source: 
    " +
			escapeText( details.source ) + "
    "; } 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 ? "" + bad + ", " + "" + good + ", " : ""; testTitle.innerHTML += " (" + testCounts + details.assertions.length + ")"; 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 = "Source: " + 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.} 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.} 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: * ABXYCD * AXCD * ABXC * AXCD * ABXC */ 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.} 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 ] = "" + escapeText( data ) + ""; break; case DIFF_DELETE: html[ x ] = "" + escapeText( data ) + ""; break; case DIFF_EQUAL: html[ x ] = "" + escapeText( data ) + ""; 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.} 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.} 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.} 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.} 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.} 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.} 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.} 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: abcxxxxxxdef // -> abcxxxdef // e.g: xxxabcdefxxx // -> defxxxabc // 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.}} * 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.} diffs Array of diff tuples. * @param {!Array.} 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.} 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: ABAC -> ABAC 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; }; }() ); }() );