corrade-http-templates – Rev 57
?pathlinks?
/*!
* QUnit 1.18.0
* http://qunitjs.com/
*
* Copyright jQuery Foundation and other contributors
* Released under the MIT license
* http://jquery.org/license
*
* Date: 2015-04-03T10:23Z
*/
(function( window ) {
var QUnit,
config,
onErrorFnPrev,
loggingCallbacks = {},
fileName = ( sourceFromStacktrace( 0 ) || "" ).replace( /(:\d+)+\)?/, "" ).replace( /.+\//, "" ),
toString = Object.prototype.toString,
hasOwn = Object.prototype.hasOwnProperty,
// Keep a local reference to Date (GH-283)
Date = window.Date,
now = Date.now || function() {
return new Date().getTime();
},
globalStartCalled = false,
runStarted = false,
setTimeout = window.setTimeout,
clearTimeout = window.clearTimeout,
defined = {
document: window.document !== undefined,
setTimeout: window.setTimeout !== undefined,
sessionStorage: (function() {
var x = "qunit-test-string";
try {
sessionStorage.setItem( x, x );
sessionStorage.removeItem( x );
return true;
} catch ( e ) {
return false;
}
}())
},
/**
* Provides a normalized error string, correcting an issue
* with IE 7 (and prior) where Error.prototype.toString is
* not properly implemented
*
* Based on http://es5.github.com/#x15.11.4.4
*
* @param {String|Error} error
* @return {String} error message
*/
errorString = function( error ) {
var name, message,
errorString = error.toString();
if ( errorString.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 errorString;
}
},
/**
* 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).
*/
objectValues = function( 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;
};
QUnit = {};
/**
* Config object: Maintain internal state
* Later exposed as QUnit.config
* `config` initialized at top of scope
*/
config = {
// The queue of tests to run
queue: [],
// block until document ready
blocking: true,
// 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,
// by default, scroll to top of the page when suite is done
scrolltop: true,
// when enabled, all tests must call expect()
requireExpects: false,
// depth up-to which object will be dumped
maxDepth: 5,
// add checkboxes that are persisted in the query-string
// when enabled, the id is set to `true` as a `QUnit.config` property
urlConfig: [
{
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 " +
"`window` object. 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."
}
],
// Set of all modules.
modules: [],
// The first unnamed module
currentModule: {
name: "",
tests: []
},
callbacks: {}
};
// Push a loose unnamed module to the modules collection
config.modules.push( config.currentModule );
// Initialize more QUnit.config and QUnit.urlParams
(function() {
var i, current,
location = window.location || { search: "", protocol: "file:" },
params = location.search.slice( 1 ).split( "&" ),
length = params.length,
urlParams = {};
if ( params[ 0 ] ) {
for ( i = 0; i < length; i++ ) {
current = params[ i ].split( "=" );
current[ 0 ] = decodeURIComponent( current[ 0 ] );
// allow just a key to turn on a flag, e.g., test.html?noglobals
current[ 1 ] = current[ 1 ] ? decodeURIComponent( current[ 1 ] ) : true;
if ( urlParams[ current[ 0 ] ] ) {
urlParams[ current[ 0 ] ] = [].concat( urlParams[ current[ 0 ] ], current[ 1 ] );
} else {
urlParams[ current[ 0 ] ] = current[ 1 ];
}
}
}
if ( urlParams.filter === true ) {
delete urlParams.filter;
}
QUnit.urlParams = urlParams;
// String search anywhere in moduleName+testName
config.filter = urlParams.filter;
if ( urlParams.maxDepth ) {
config.maxDepth = parseInt( urlParams.maxDepth, 10 ) === -1 ?
Number.POSITIVE_INFINITY :
urlParams.maxDepth;
}
config.testId = [];
if ( urlParams.testId ) {
// Ensure that urlParams.testId is an array
urlParams.testId = decodeURIComponent( urlParams.testId ).split( "," );
for ( i = 0; i < urlParams.testId.length; i++ ) {
config.testId.push( urlParams.testId[ i ] );
}
}
// Figure out if we're running the tests from a server or not
QUnit.isLocal = location.protocol === "file:";
// Expose the current QUnit version
QUnit.version = "1.18.0";
}());
// Root QUnit object.
// `QUnit` initialized at top of scope
extend( QUnit, {
// call on start of module test to prepend name to all tests
module: function( name, testEnvironment ) {
var currentModule = {
name: name,
testEnvironment: testEnvironment,
tests: []
};
// 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;
}
config.modules.push( currentModule );
config.currentModule = currentModule;
},
// DEPRECATED: QUnit.asyncTest() will be removed in QUnit 2.0.
asyncTest: function( testName, expected, callback ) {
if ( arguments.length === 2 ) {
callback = expected;
expected = null;
}
QUnit.test( testName, expected, callback, true );
},
test: function( testName, expected, callback, async ) {
var test;
if ( arguments.length === 2 ) {
callback = expected;
expected = null;
}
test = new Test({
testName: testName,
expected: expected,
async: async,
callback: callback
});
test.queue();
},
skip: function( testName ) {
var test = new Test({
testName: testName,
skip: true
});
test.queue();
},
// 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;
// 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,
// Safe object type checking
is: function( type, obj ) {
return QUnit.objectType( obj ) === type;
},
objectType: function( obj ) {
if ( typeof obj === "undefined" ) {
return "undefined";
}
// Consider: typeof null === object
if ( obj === null ) {
return "null";
}
var 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 "Date":
case "RegExp":
case "Function":
return type.toLowerCase();
}
if ( typeof obj === "object" ) {
return "object";
}
return undefined;
},
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();
}
}
});
// Register logging callbacks
(function() {
var i, l, key,
callbacks = [ "begin", "done", "log", "testStart", "testDone",
"moduleStart", "moduleDone" ];
function registerLoggingCallback( key ) {
var loggingCallback = function( callback ) {
if ( QUnit.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 = callbacks.length; i < l; i++ ) {
key = callbacks[ i ];
// Initialize key collection of logging callback
if ( QUnit.objectType( config.callbacks[ key ] ) === "undefined" ) {
config.callbacks[ key ] = [];
}
QUnit[ key ] = registerLoggingCallback( key );
}
})();
// `onErrorFnPrev` initialized at top of scope
// Preserve other handlers
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;
};
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
});
}
// 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 );
}
function synchronize( callback, last ) {
if ( QUnit.objectType( callback ) === "array" ) {
while ( callback.length ) {
synchronize( callback.shift() );
}
return;
}
config.queue.push( callback );
if ( config.autorun && !config.blocking ) {
process( last );
}
}
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 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 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 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 saveGlobal() {
config.pollution = [];
if ( config.noglobals ) {
for ( var key in window ) {
if ( hasOwn.call( window, 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( ", " ) );
}
}
// returns a new Array with the elements that are in a but not in b
function diff( a, b ) {
var i, j,
result = a.slice();
for ( i = 0; i < result.length; i++ ) {
for ( j = 0; j < b.length; j++ ) {
if ( result[ i ] === b[ j ] ) {
result.splice( i, 1 );
i--;
break;
}
}
}
return result;
}
function extend( a, b, undefOnly ) {
for ( var prop in b ) {
if ( hasOwn.call( b, prop ) ) {
// Avoid "Member not found" error in IE8 caused by messing with window.constructor
if ( !( prop === "constructor" && a === window ) ) {
if ( b[ prop ] === undefined ) {
delete a[ prop ];
} else if ( !( undefOnly && typeof a[ prop ] !== "undefined" ) ) {
a[ prop ] = b[ prop ];
}
}
}
}
return a;
}
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 ( window.console && window.console.warn ) {
window.console.warn(
"QUnit." + loggingCallback + " was replaced with a new value.\n" +
"Please, check out the documentation on how to apply logging callbacks.\n" +
"Reference: http://api.qunitjs.com/category/callbacks/"
);
}
}
}
}
// 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;
}
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;
this.testEnvironment = extend( {}, this.module.testEnvironment );
delete this.testEnvironment.beforeEach;
delete this.testEnvironment.afterEach;
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 ) {
promise = this.callback.call( this.testEnvironment, this.assert );
this.resolvePromise( promise );
return;
}
try {
promise = this.callback.call( this.testEnvironment, this.assert );
this.resolvePromise( promise );
} 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();
}
}
},
after: function() {
checkPollution();
},
queueHook: function( hook, hookName ) {
var promise,
test = this;
return function runHook() {
config.current = test;
if ( config.notrycatch ) {
promise = hook.call( test.testEnvironment, test.assert );
test.resolvePromise( promise, hookName );
return;
}
try {
promise = hook.call( test.testEnvironment, test.assert );
test.resolvePromise( promise, hookName );
} catch ( error ) {
test.pushFailure( hookName + " failed on " + test.testName + ": " +
( error.message || error ), extractStacktrace( error, 0 ) );
}
};
},
// Currently only used for module level hooks, can be used to add global level ones
hooks: function( handler ) {
var hooks = [];
// Hooks are ignored on skipped tests
if ( this.skip ) {
return hooks;
}
if ( this.module.testEnvironment &&
QUnit.objectType( this.module.testEnvironment[ handler ] ) === "function" ) {
hooks.push( this.queueHook( this.module.testEnvironment[ handler ], handler ) );
}
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,
// 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 bad,
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();
}
]);
}
// `bad` initialized at top of scope
// defer when previous test run passed, if storage is available
bad = QUnit.config.reorder && defined.sessionStorage &&
+sessionStorage.getItem( "qunit-test-" + this.module.name + "-" + this.testName );
if ( bad ) {
run();
} else {
synchronize( run, true );
}
},
push: function( result, actual, expected, message ) {
var source,
details = {
module: this.module.name,
name: this.testName,
result: result,
message: message,
actual: actual,
expected: expected,
testId: this.testId,
runtime: now() - this.started
};
if ( !result ) {
source = sourceFromStacktrace();
if ( source ) {
details.source = source;
}
}
runLoggingCallbacks( "log", details );
this.assertions.push({
result: !!result,
message: 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,
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 include,
filter = config.filter && config.filter.toLowerCase(),
module = QUnit.urlParams.module && QUnit.urlParams.module.toLowerCase(),
fullName = ( this.module.name + ": " + this.testName ).toLowerCase();
// Internally-generated tests are always valid
if ( this.callback && this.callback.validTest ) {
return true;
}
if ( config.testId.length > 0 && inArray( this.testId, config.testId ) < 0 ) {
return false;
}
if ( module && ( !this.module.name || this.module.name.toLowerCase() !== module ) ) {
return false;
}
if ( !filter ) {
return true;
}
include = filter.charAt( 0 ) !== "!";
if ( !include ) {
filter = filter.slice( 1 );
}
// If the filter matches, we need to honour include
if ( fullName.indexOf( filter ) !== -1 ) {
return include;
}
// Otherwise, do the opposite
return !include;
}
};
// 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 ( typeof window === "undefined" ) {
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 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 single-use function that
// decrements that counter a maximum of once.
async: function() {
var test = this.test,
popped = false;
test.semaphore += 1;
test.usedAsync = true;
pauseProcessing();
return function done() {
if ( !popped ) {
test.semaphore -= 1;
popped = true;
resumeProcessing();
} else {
test.pushFailure( "Called the callback returned from `assert.async` more than once",
sourceFromStacktrace( 2 ) );
}
};
},
// Exports test.push() to the user API
push: function( /* result, actual, expected, message */ ) {
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.push.apply( assert.test, arguments );
},
ok: function( result, message ) {
message = message || ( result ? "okay" : "failed, expected argument to be truthy, was: " +
QUnit.dump.parse( result ) );
this.push( !!result, result, true, message );
},
notOk: function( result, message ) {
message = message || ( !result ? "okay" : "failed, expected argument to be falsy, was: " +
QUnit.dump.parse( result ) );
this.push( !result, result, false, message );
},
equal: function( actual, expected, message ) {
/*jshint eqeqeq:false */
this.push( expected == actual, actual, expected, message );
},
notEqual: function( actual, expected, message ) {
/*jshint eqeqeq:false */
this.push( expected != actual, actual, expected, message );
},
propEqual: function( actual, expected, message ) {
actual = objectValues( actual );
expected = objectValues( expected );
this.push( QUnit.equiv( actual, expected ), actual, expected, message );
},
notPropEqual: function( actual, expected, message ) {
actual = objectValues( actual );
expected = objectValues( expected );
this.push( !QUnit.equiv( actual, expected ), actual, expected, message );
},
deepEqual: function( actual, expected, message ) {
this.push( QUnit.equiv( actual, expected ), actual, expected, message );
},
notDeepEqual: function( actual, expected, message ) {
this.push( !QUnit.equiv( actual, expected ), actual, expected, message );
},
strictEqual: function( actual, expected, message ) {
this.push( expected === actual, actual, expected, message );
},
notStrictEqual: function( actual, expected, message ) {
this.push( expected !== actual, actual, expected, message );
},
"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.push( ok, actual, expectedOutput, message );
}
};
// Provide an alternative to assert.throws(), for enviroments that consider throws a reserved word
// Known to us are: Closure Compiler, Narwhal
(function() {
/*jshint sub:true */
Assert.prototype.raises = Assert.prototype[ "throws" ];
}());
// Test for equality any JavaScript type.
// Author: Philippe Rathé <prathe@gmail.com>
QUnit.equiv = (function() {
// Call the o related callback with the given arguments.
function bindCallbacks( o, callbacks, args ) {
var prop = QUnit.objectType( o );
if ( prop ) {
if ( QUnit.objectType( callbacks[ prop ] ) === "function" ) {
return callbacks[ prop ].apply( callbacks, args );
} else {
return callbacks[ prop ]; // or undefined
}
}
}
// the real equiv function
var innerEquiv,
// stack to decide between skip/abort functions
callers = [],
// stack to avoiding loops from circular referencing
parents = [],
parentsB = [],
getProto = Object.getPrototypeOf || function( obj ) {
/* jshint camelcase: false, proto: true */
return obj.__proto__;
},
callbacks = (function() {
// for string, boolean, number and null
function useStrictEquality( b, a ) {
/*jshint eqeqeq:false */
if ( b instanceof a.constructor || a instanceof b.constructor ) {
// to catch short annotation VS 'new' annotation of a
// declaration
// e.g. var i = 1;
// var j = new Number(1);
return a == b;
} else {
return a === b;
}
}
return {
"string": useStrictEquality,
"boolean": useStrictEquality,
"number": useStrictEquality,
"null": useStrictEquality,
"undefined": useStrictEquality,
"nan": function( b ) {
return isNaN( b );
},
"date": function( b, a ) {
return QUnit.objectType( b ) === "date" && a.valueOf() === b.valueOf();
},
"regexp": function( b, a ) {
return QUnit.objectType( b ) === "regexp" &&
// the regex itself
a.source === b.source &&
// and its modifiers
a.global === b.global &&
// (gmi) ...
a.ignoreCase === b.ignoreCase &&
a.multiline === b.multiline &&
a.sticky === b.sticky;
},
// - 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;
// b could be an object literal here
if ( QUnit.objectType( b ) !== "array" ) {
return false;
}
len = a.length;
if ( len !== b.length ) {
// safe and faster
return false;
}
// track reference to avoid circular references
parents.push( a );
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;
},
"object": function( b, a ) {
/*jshint forin:false */
var i, j, loop, aCircular, bCircular,
// Default to true
eq = true,
aProperties = [],
bProperties = [];
// comparing constructors is more strict than using
// instanceof
if ( a.constructor !== b.constructor ) {
// Allow objects with no prototype to be equivalent to
// objects with Object as their constructor.
if ( !( ( getProto( a ) === null && getProto( b ) === Object.prototype ) ||
( getProto( b ) === null && getProto( a ) === Object.prototype ) ) ) {
return false;
}
}
// stack constructor before traversing properties
callers.push( a.constructor );
// track reference to avoid circular references
parents.push( a );
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();
callers.pop(); // unstack, we are done
for ( i in b ) {
bProperties.push( i ); // collect b's properties
}
// Ensures identical properties name
return eq && innerEquiv( aProperties.sort(), bProperties.sort() );
}
};
}());
innerEquiv = function() { // can take multiple arguments
var args = [].slice.apply( arguments );
if ( args.length < 2 ) {
return true; // end transition
}
return ( (function( a, b ) {
if ( a === b ) {
return true; // catch the most you can
} else if ( a === null || b === null || typeof a === "undefined" ||
typeof b === "undefined" ||
QUnit.objectType( a ) !== QUnit.objectType( b ) ) {
// don't lose time with error prone cases
return false;
} else {
return bindCallbacks( a, callbacks, [ b, a ] );
}
// apply transition with (1..n) arguments
}( args[ 0 ], args[ 1 ] ) ) &&
innerEquiv.apply( this, args.splice( 1, args.length - 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, "\\\"" ) + "\"";
}
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 = {
// objType is used mostly internally, you can fix a (custom) type in advance
parse: function( obj, objType, stack ) {
stack = stack || [];
var res, parser, parserType,
inStack = inArray( obj, stack );
if ( inStack !== -1 ) {
return "recursion(" + ( inStack - stack.length ) + ")";
}
objType = objType || this.typeOf( obj );
parser = this.parsers[ objType ];
parserType = typeof parser;
if ( parserType === "function" ) {
stack.push( obj );
res = parser.call( this, obj, stack );
stack.pop();
return res;
}
return ( parserType === "string" ) ? parser : this.parsers.error;
},
typeOf: function( obj ) {
var type;
if ( obj === null ) {
type = "null";
} else if ( typeof obj === "undefined" ) {
type = "undefined";
} else if ( QUnit.is( "regexp", obj ) ) {
type = "regexp";
} else if ( QUnit.is( "date", obj ) ) {
type = "date";
} else if ( QUnit.is( "function", obj ) ) {
type = "function";
} else if ( obj.setInterval !== undefined &&
obj.document !== undefined &&
obj.nodeType === undefined ) {
type = "window";
} else if ( obj.nodeType === 9 ) {
type = "document";
} else if ( obj.nodeType ) {
type = "node";
} else if (
// native arrays
toString.call( obj ) === "[object Array]" ||
// NodeList objects
( typeof obj.length === "number" && obj.item !== undefined &&
( obj.length ? obj.item( 0 ) === obj[ 0 ] : ( obj.item( 0 ) === null &&
obj[ 0 ] === undefined ) ) )
) {
type = "array";
} else if ( obj.constructor === Error.prototype.constructor ) {
type = "error";
} else {
type = typeof obj;
}
return type;
},
separator: function() {
return this.multiline ? this.HTML ? "<br />" : "\n" : this.HTML ? " " : " ";
},
// 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 an 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;
// For browser, export only select globals
if ( typeof window !== "undefined" ) {
// Deprecated
// Extend assert methods to QUnit and Global scope through 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 ] );
}
})();
(function() {
var i, l,
keys = [
"test",
"module",
"expect",
"asyncTest",
"start",
"stop",
"ok",
"notOk",
"equal",
"notEqual",
"propEqual",
"notPropEqual",
"deepEqual",
"notDeepEqual",
"strictEqual",
"notStrictEqual",
"throws"
];
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;
})() ));
/*istanbul ignore next */
// jscs:disable maximumLineLength
/*
* 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.
* http://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
*
* http://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( "the quick brown fox jumped over", "the quick fox jumps over" ) === "the quick <del>brown </del> fox jump<ins>s</ins><del>ed</del over"
*/
QUnit.diff = (function() {
function DiffMatchPatch() {
// Defaults.
// Redefine these in your program to override the defaults.
// Number of seconds to map a diff before giving up (0 for infinity).
this.DiffTimeout = 1.0;
// Cost of an empty edit operation in terms of edit characters.
this.DiffEditCost = 4;
}
// 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.
* @param {number} optDeadline Optional time when the diff should be complete
* by. Used internally for recursive calls. Users should set DiffTimeout
* instead.
* @return {!Array.<!DiffMatchPatch.Diff>} Array of diff tuples.
*/
DiffMatchPatch.prototype.DiffMain = function( text1, text2, optChecklines, optDeadline ) {
var deadline, checklines, commonlength,
commonprefix, commonsuffix, diffs;
// Set a deadline by which time the diff must be complete.
if ( typeof optDeadline === "undefined" ) {
if ( this.DiffTimeout <= 0 ) {
optDeadline = Number.MAX_VALUE;
} else {
optDeadline = ( new Date() ).getTime() + this.DiffTimeout * 1000;
}
}
deadline = optDeadline;
// Check for null inputs.
if ( text1 === null || text2 === null ) {
throw new Error( "Null input. (DiffMain)" );
}
// Check for equality (speedup).
if ( text1 === text2 ) {
if ( text1 ) {
return [
[ DIFF_EQUAL, text1 ]
];
}
return [];
}
if ( typeof optChecklines === "undefined" ) {
optChecklines = true;
}
checklines = optChecklines;
// Trim off common prefix (speedup).
commonlength = this.diffCommonPrefix( text1, text2 );
commonprefix = text1.substring( 0, commonlength );
text1 = text1.substring( commonlength );
text2 = text2.substring( commonlength );
// Trim off common suffix (speedup).
/////////
commonlength = this.diffCommonSuffix( text1, text2 );
commonsuffix = text1.substring( text1.length - commonlength );
text1 = text1.substring( 0, text1.length - commonlength );
text2 = text2.substring( 0, text2.length - commonlength );
// Compute the diff on the middle block.
diffs = this.diffCompute( text1, text2, checklines, deadline );
// Restore the prefix and suffix.
if ( commonprefix ) {
diffs.unshift( [ DIFF_EQUAL, commonprefix ] );
}
if ( commonsuffix ) {
diffs.push( [ DIFF_EQUAL, commonsuffix ] );
}
this.diffCleanupMerge( diffs );
return diffs;
};
/**
* Reduce the number of edits by eliminating operationally trivial equalities.
* @param {!Array.<!DiffMatchPatch.Diff>} diffs Array of diff tuples.
*/
DiffMatchPatch.prototype.diffCleanupEfficiency = function( diffs ) {
var changes, equalities, equalitiesLength, lastequality,
pointer, preIns, preDel, postIns, postDel;
changes = false;
equalities = []; // Stack of indices where equalities are found.
equalitiesLength = 0; // Keeping our own length var is faster in JS.
/** @type {?string} */
lastequality = null;
// Always equal to diffs[equalities[equalitiesLength - 1]][1]
pointer = 0; // Index of current position.
// Is there an insertion operation before the last equality.
preIns = false;
// Is there a deletion operation before the last equality.
preDel = false;
// Is there an insertion operation after the last equality.
postIns = false;
// Is there a deletion operation after the last equality.
postDel = false;
while ( pointer < diffs.length ) {
if ( diffs[ pointer ][ 0 ] === DIFF_EQUAL ) { // Equality found.
if ( diffs[ pointer ][ 1 ].length < this.DiffEditCost && ( 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;
} else { // An insertion or deletion.
if ( diffs[ pointer ][ 0 ] === DIFF_DELETE ) {
postDel = true;
} else {
postIns = true;
}
/*
* Five types to be split:
* <ins>A</ins><del>B</del>XY<ins>C</ins><del>D</del>
* <ins>A</ins>X<ins>C</ins><del>D</del>
* <ins>A</ins><del>B</del>X<ins>C</ins>
* <ins>A</del>X<ins>C</ins><del>D</del>
* <ins>A</ins><del>B</del>X<del>C</del>
*/
if ( lastequality && ( ( preIns && preDel && postIns && postDel ) ||
( ( lastequality.length < this.DiffEditCost / 2 ) &&
( preIns + preDel + postIns + postDel ) === 3 ) ) ) {
// Duplicate record.
diffs.splice( equalities[equalitiesLength - 1], 0, [ DIFF_DELETE, lastequality ] );
// Change second copy to insert.
diffs[ equalities[ equalitiesLength - 1 ] + 1 ][ 0 ] = DIFF_INSERT;
equalitiesLength--; // Throw away the equality we just deleted;
lastequality = null;
if (preIns && preDel) {
// No changes made which could affect previous entry, keep going.
postIns = postDel = true;
equalitiesLength = 0;
} else {
equalitiesLength--; // Throw away the previous equality.
pointer = equalitiesLength > 0 ? equalities[ equalitiesLength - 1 ] : -1;
postIns = postDel = false;
}
changes = true;
}
}
pointer++;
}
if ( changes ) {
this.diffCleanupMerge( diffs );
}
};
/**
* Convert a diff array into a pretty HTML report.
* @param {!Array.<!DiffMatchPatch.Diff>} diffs Array of diff tuples.
* @param {integer} string to be beautified.
* @return {string} HTML representation.
*/
DiffMatchPatch.prototype.diffPrettyHtml = function( diffs ) {
var op, data, x, html = [];
for ( x = 0; x < diffs.length; x++ ) {
op = diffs[x][0]; // Operation (insert, delete, equal)
data = diffs[x][1]; // Text of change.
switch ( op ) {
case DIFF_INSERT:
html[x] = "" + data + "ins>";
break;
case DIFF_DELETE:
html[x] = "<del>" + data + "</del>";
break;
case DIFF_EQUAL:
html[x] = "" + data + "span>";
break;
}
}
return html.join("");
};
/**
* Determine the common prefix of two strings.
* @param {string} text1 First string.
* @param {string} text2 Second string.
* @return {number} The number of characters common to the start of each
* string.
*/
DiffMatchPatch.prototype.diffCommonPrefix = function( text1, text2 ) {
var pointermid, pointermax, pointermin, pointerstart;
// Quick check for common null cases.
if ( !text1 || !text2 || text1.charAt(0) !== text2.charAt(0) ) {
return 0;
}
// Binary search.
// Performance analysis: http://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: http://neil.fraser.name/news/2007/10/09/
pointermin = 0;
pointermax = Math.min(text1.length, text2.length);
pointermid = pointermax;
pointerend = 0;
while ( pointermin < pointermid ) {
if (text1.substring( text1.length - pointermid, text1.length - pointerend ) ===
text2.substring( text2.length - pointermid, text2.length - pointerend ) ) {
pointermin = pointermid;
pointerend = pointermin;
} else {
pointermax = pointermid;
}
pointermid = Math.floor( ( pointermax - pointermin ) / 2 + pointermin );
}
return pointermid;
};
/**
* Find the differences between two texts. Assumes that the texts do not
* have any common prefix or suffix.
* @param {string} text1 Old string to be diffed.
* @param {string} text2 New string to be diffed.
* @param {boolean} checklines Speedup flag. If false, then don't run a
* line-level diff first to identify the changed areas.
* If true, then run a faster, slightly less optimal diff.
* @param {number} deadline Time when the diff should be complete by.
* @return {!Array.<!DiffMatchPatch.Diff>} Array of diff tuples.
* @private
*/
DiffMatchPatch.prototype.diffCompute = function( text1, text2, checklines, deadline ) {
var diffs, longtext, shorttext, i, hm,
text1A, text2A, text1B, text2B,
midCommon, diffsA, diffsB;
if ( !text1 ) {
// Just add some text (speedup).
return [
[ DIFF_INSERT, text2 ]
];
}
if (!text2) {
// Just delete some text (speedup).
return [
[ DIFF_DELETE, text1 ]
];
}
longtext = text1.length > text2.length ? text1 : text2;
shorttext = text1.length > text2.length ? text2 : text1;
i = longtext.indexOf( shorttext );
if ( i !== -1 ) {
// Shorter text is inside the longer text (speedup).
diffs = [
[ DIFF_INSERT, longtext.substring( 0, i ) ],
[ DIFF_EQUAL, shorttext ],
[ DIFF_INSERT, longtext.substring( i + shorttext.length ) ]
];
// Swap insertions for deletions if diff is reversed.
if ( text1.length > text2.length ) {
diffs[0][0] = diffs[2][0] = DIFF_DELETE;
}
return diffs;
}
if ( shorttext.length === 1 ) {
// Single character string.
// After the previous speedup, the character can't be an equality.
return [
[ DIFF_DELETE, text1 ],
[ DIFF_INSERT, text2 ]
];
}
// Check to see if the problem can be split in two.
hm = this.diffHalfMatch(text1, text2);
if (hm) {
// A half-match was found, sort out the return data.
text1A = hm[0];
text1B = hm[1];
text2A = hm[2];
text2B = hm[3];
midCommon = hm[4];
// Send both pairs off for separate processing.
diffsA = this.DiffMain(text1A, text2A, checklines, deadline);
diffsB = this.DiffMain(text1B, text2B, checklines, deadline);
// Merge the results.
return diffsA.concat([
[ DIFF_EQUAL, midCommon ]
], diffsB);
}
if (checklines && text1.length > 100 && text2.length > 100) {
return this.diffLineMode(text1, text2, deadline);
}
return this.diffBisect(text1, text2, deadline);
};
/**
* Do the two texts share a substring which is at least half the length of the
* longer text?
* This speedup can produce non-minimal diffs.
* @param {string} text1 First string.
* @param {string} text2 Second string.
* @return {Array.<string>} Five element Array, containing the prefix of
* text1, the suffix of text1, the prefix of text2, the suffix of
* text2 and the common middle. Or null if there was no match.
* @private
*/
DiffMatchPatch.prototype.diffHalfMatch = function(text1, text2) {
var longtext, shorttext, dmp,
text1A, text2B, text2A, text1B, midCommon,
hm1, hm2, hm;
if (this.DiffTimeout <= 0) {
// Don't risk returning a non-optimal diff if we have unlimited time.
return null;
}
longtext = text1.length > text2.length ? text1 : text2;
shorttext = text1.length > text2.length ? text2 : text1;
if (longtext.length < 4 || shorttext.length * 2 < longtext.length) {
return null; // Pointless.
}
dmp = this; // 'this' becomes 'window' in a closure.
/**
* Does a substring of shorttext exist within longtext such that the substring
* is at least half the length of longtext?
* Closure, but does not reference any external variables.
* @param {string} longtext Longer string.
* @param {string} shorttext Shorter string.
* @param {number} i Start index of quarter length substring within longtext.
* @return {Array.<string>} Five element Array, containing the prefix of
* longtext, the suffix of longtext, the prefix of shorttext, the suffix
* of shorttext and the common middle. Or null if there was no match.
* @private
*/
function diffHalfMatchI(longtext, shorttext, i) {
var seed, j, bestCommon, prefixLength, suffixLength,
bestLongtextA, bestLongtextB, bestShorttextA, bestShorttextB;
// Start with a 1/4 length substring at position i as a seed.
seed = longtext.substring(i, i + Math.floor(longtext.length / 4));
j = -1;
bestCommon = "";
while ((j = shorttext.indexOf(seed, j + 1)) !== -1) {
prefixLength = dmp.diffCommonPrefix(longtext.substring(i),
shorttext.substring(j));
suffixLength = dmp.diffCommonSuffix(longtext.substring(0, i),
shorttext.substring(0, j));
if (bestCommon.length < suffixLength + prefixLength) {
bestCommon = shorttext.substring(j - suffixLength, j) +
shorttext.substring(j, j + prefixLength);
bestLongtextA = longtext.substring(0, i - suffixLength);
bestLongtextB = longtext.substring(i + prefixLength);
bestShorttextA = shorttext.substring(0, j - suffixLength);
bestShorttextB = shorttext.substring(j + prefixLength);
}
}
if (bestCommon.length * 2 >= longtext.length) {
return [ bestLongtextA, bestLongtextB,
bestShorttextA, bestShorttextB, bestCommon
];
} else {
return null;
}
}
// First check if the second quarter is the seed for a half-match.
hm1 = diffHalfMatchI(longtext, shorttext,
Math.ceil(longtext.length / 4));
// Check again based on the third quarter.
hm2 = diffHalfMatchI(longtext, shorttext,
Math.ceil(longtext.length / 2));
if (!hm1 && !hm2) {
return null;
} else if (!hm2) {
hm = hm1;
} else if (!hm1) {
hm = hm2;
} else {
// Both matched. Select the longest.
hm = hm1[4].length > hm2[4].length ? hm1 : hm2;
}
// A half-match was found, sort out the return data.
text1A, text1B, text2A, text2B;
if (text1.length > text2.length) {
text1A = hm[0];
text1B = hm[1];
text2A = hm[2];
text2B = hm[3];
} else {
text2A = hm[0];
text2B = hm[1];
text1A = hm[2];
text1B = hm[3];
}
midCommon = hm[4];
return [ text1A, text1B, text2A, text2B, midCommon ];
};
/**
* Do a quick line-level diff on both strings, then rediff the parts for
* greater accuracy.
* This speedup can produce non-minimal diffs.
* @param {string} text1 Old string to be diffed.
* @param {string} text2 New string to be diffed.
* @param {number} deadline Time when the diff should be complete by.
* @return {!Array.<!DiffMatchPatch.Diff>} Array of diff tuples.
* @private
*/
DiffMatchPatch.prototype.diffLineMode = function(text1, text2, deadline) {
var a, diffs, linearray, pointer, countInsert,
countDelete, textInsert, textDelete, j;
// Scan the text on a line-by-line basis first.
a = this.diffLinesToChars(text1, text2);
text1 = a.chars1;
text2 = a.chars2;
linearray = a.lineArray;
diffs = this.DiffMain(text1, text2, false, deadline);
// Convert the diff back to original text.
this.diffCharsToLines(diffs, linearray);
// Eliminate freak matches (e.g. blank lines)
this.diffCleanupSemantic(diffs);
// Rediff any replacement blocks, this time character-by-character.
// Add a dummy entry at the end.
diffs.push( [ DIFF_EQUAL, "" ] );
pointer = 0;
countDelete = 0;
countInsert = 0;
textDelete = "";
textInsert = "";
while (pointer < diffs.length) {
switch ( diffs[pointer][0] ) {
case DIFF_INSERT:
countInsert++;
textInsert += diffs[pointer][1];
break;
case DIFF_DELETE:
countDelete++;
textDelete += diffs[pointer][1];
break;
case DIFF_EQUAL:
// Upon reaching an equality, check for prior redundancies.
if (countDelete >= 1 && countInsert >= 1) {
// Delete the offending records and add the merged ones.
diffs.splice(pointer - countDelete - countInsert,
countDelete + countInsert);
pointer = pointer - countDelete - countInsert;
a = this.DiffMain(textDelete, textInsert, false, deadline);
for (j = a.length - 1; j >= 0; j--) {
diffs.splice( pointer, 0, a[j] );
}
pointer = pointer + a.length;
}
countInsert = 0;
countDelete = 0;
textDelete = "";
textInsert = "";
break;
}
pointer++;
}
diffs.pop(); // Remove the dummy entry at the end.
return diffs;
};
/**
* Find the 'middle snake' of a diff, split the problem in two
* and return the recursively constructed diff.
* See Myers 1986 paper: An O(ND) Difference Algorithm and Its Variations.
* @param {string} text1 Old string to be diffed.
* @param {string} text2 New string to be diffed.
* @param {number} deadline Time at which to bail if not yet complete.
* @return {!Array.<!DiffMatchPatch.Diff>} Array of diff tuples.
* @private
*/
DiffMatchPatch.prototype.diffBisect = function(text1, text2, deadline) {
var text1Length, text2Length, maxD, vOffset, vLength,
v1, v2, x, delta, front, k1start, k1end, k2start,
k2end, k2Offset, k1Offset, x1, x2, y1, y2, d, k1, k2;
// Cache the text lengths to prevent multiple calls.
text1Length = text1.length;
text2Length = text2.length;
maxD = Math.ceil((text1Length + text2Length) / 2);
vOffset = maxD;
vLength = 2 * maxD;
v1 = new Array(vLength);
v2 = new Array(vLength);
// Setting all elements to -1 is faster in Chrome & Firefox than mixing
// integers and undefined.
for (x = 0; x < vLength; x++) {
v1[x] = -1;
v2[x] = -1;
}
v1[vOffset + 1] = 0;
v2[vOffset + 1] = 0;
delta = text1Length - text2Length;
// If the total number of characters is odd, then the front path will collide
// with the reverse path.
front = (delta % 2 !== 0);
// Offsets for start and end of k loop.
// Prevents mapping of space beyond the grid.
k1start = 0;
k1end = 0;
k2start = 0;
k2end = 0;
for (d = 0; d < maxD; d++) {
// Bail out if deadline is reached.
if ((new Date()).getTime() > deadline) {
break;
}
// Walk the front path one step.
for (k1 = -d + k1start; k1 <= d - k1end; k1 += 2) {
k1Offset = vOffset + k1;
if ( k1 === -d || ( k1 !== d && v1[ k1Offset - 1 ] < v1[ k1Offset + 1 ] ) ) {
x1 = v1[k1Offset + 1];
} else {
x1 = v1[k1Offset - 1] + 1;
}
y1 = x1 - k1;
while (x1 < text1Length && y1 < text2Length &&
text1.charAt(x1) === text2.charAt(y1)) {
x1++;
y1++;
}
v1[k1Offset] = x1;
if (x1 > text1Length) {
// Ran off the right of the graph.
k1end += 2;
} else if (y1 > text2Length) {
// Ran off the bottom of the graph.
k1start += 2;
} else if (front) {
k2Offset = vOffset + delta - k1;
if (k2Offset >= 0 && k2Offset < vLength && v2[k2Offset] !== -1) {
// Mirror x2 onto top-left coordinate system.
x2 = text1Length - v2[k2Offset];
if (x1 >= x2) {
// Overlap detected.
return this.diffBisectSplit(text1, text2, x1, y1, deadline);
}
}
}
}
// Walk the reverse path one step.
for (k2 = -d + k2start; k2 <= d - k2end; k2 += 2) {
k2Offset = vOffset + k2;
if ( k2 === -d || (k2 !== d && v2[ k2Offset - 1 ] < v2[ k2Offset + 1 ] ) ) {
x2 = v2[k2Offset + 1];
} else {
x2 = v2[k2Offset - 1] + 1;
}
y2 = x2 - k2;
while (x2 < text1Length && y2 < text2Length &&
text1.charAt(text1Length - x2 - 1) ===
text2.charAt(text2Length - y2 - 1)) {
x2++;
y2++;
}
v2[k2Offset] = x2;
if (x2 > text1Length) {
// Ran off the left of the graph.
k2end += 2;
} else if (y2 > text2Length) {
// Ran off the top of the graph.
k2start += 2;
} else if (!front) {
k1Offset = vOffset + delta - k2;
if (k1Offset >= 0 && k1Offset < vLength && v1[k1Offset] !== -1) {
x1 = v1[k1Offset];
y1 = vOffset + x1 - k1Offset;
// Mirror x2 onto top-left coordinate system.
x2 = text1Length - x2;
if (x1 >= x2) {
// Overlap detected.
return this.diffBisectSplit(text1, text2, x1, y1, deadline);
}
}
}
}
}
// Diff took too long and hit the deadline or
// number of diffs equals number of characters, no commonality at all.
return [
[ DIFF_DELETE, text1 ],
[ DIFF_INSERT, text2 ]
];
};
/**
* Given the location of the 'middle snake', split the diff in two parts
* and recurse.
* @param {string} text1 Old string to be diffed.
* @param {string} text2 New string to be diffed.
* @param {number} x Index of split point in text1.
* @param {number} y Index of split point in text2.
* @param {number} deadline Time at which to bail if not yet complete.
* @return {!Array.<!DiffMatchPatch.Diff>} Array of diff tuples.
* @private
*/
DiffMatchPatch.prototype.diffBisectSplit = function( text1, text2, x, y, deadline ) {
var text1a, text1b, text2a, text2b, diffs, diffsb;
text1a = text1.substring(0, x);
text2a = text2.substring(0, y);
text1b = text1.substring(x);
text2b = text2.substring(y);
// Compute both diffs serially.
diffs = this.DiffMain(text1a, text2a, false, deadline);
diffsb = this.DiffMain(text1b, text2b, false, deadline);
return diffs.concat(diffsb);
};
/**
* Reduce the number of edits by eliminating semantically trivial equalities.
* @param {!Array.<!DiffMatchPatch.Diff>} diffs Array of diff tuples.
*/
DiffMatchPatch.prototype.diffCleanupSemantic = function(diffs) {
var changes, equalities, equalitiesLength, lastequality,
pointer, lengthInsertions2, lengthDeletions2, lengthInsertions1,
lengthDeletions1, deletion, insertion, overlapLength1, overlapLength2;
changes = false;
equalities = []; // Stack of indices where equalities are found.
equalitiesLength = 0; // Keeping our own length var is faster in JS.
/** @type {?string} */
lastequality = null;
// Always equal to diffs[equalities[equalitiesLength - 1]][1]
pointer = 0; // Index of current position.
// Number of characters that changed prior to the equality.
lengthInsertions1 = 0;
lengthDeletions1 = 0;
// Number of characters that changed after the equality.
lengthInsertions2 = 0;
lengthDeletions2 = 0;
while (pointer < diffs.length) {
if (diffs[pointer][0] === DIFF_EQUAL) { // Equality found.
equalities[equalitiesLength++] = pointer;
lengthInsertions1 = lengthInsertions2;
lengthDeletions1 = lengthDeletions2;
lengthInsertions2 = 0;
lengthDeletions2 = 0;
lastequality = diffs[pointer][1];
} else { // An insertion or deletion.
if (diffs[pointer][0] === DIFF_INSERT) {
lengthInsertions2 += diffs[pointer][1].length;
} else {
lengthDeletions2 += diffs[pointer][1].length;
}
// Eliminate an equality that is smaller or equal to the edits on both
// sides of it.
if (lastequality && (lastequality.length <=
Math.max(lengthInsertions1, lengthDeletions1)) &&
(lastequality.length <= Math.max(lengthInsertions2,
lengthDeletions2))) {
// Duplicate record.
diffs.splice( equalities[ equalitiesLength - 1 ], 0, [ DIFF_DELETE, lastequality ] );
// Change second copy to insert.
diffs[equalities[equalitiesLength - 1] + 1][0] = DIFF_INSERT;
// Throw away the equality we just deleted.
equalitiesLength--;
// Throw away the previous equality (it needs to be reevaluated).
equalitiesLength--;
pointer = equalitiesLength > 0 ? equalities[equalitiesLength - 1] : -1;
lengthInsertions1 = 0; // Reset the counters.
lengthDeletions1 = 0;
lengthInsertions2 = 0;
lengthDeletions2 = 0;
lastequality = null;
changes = true;
}
}
pointer++;
}
// Normalize the diff.
if (changes) {
this.diffCleanupMerge(diffs);
}
// Find any overlaps between deletions and insertions.
// e.g: <del>abcxxx</del><ins>xxxdef</ins>
// -> <del>abc</del>xxx<ins>def</ins>
// e.g: <del>xxxabc</del><ins>defxxx</ins>
// -> <ins>def</ins>xxx<del>abc</del>
// Only extract an overlap if it is as big as the edit ahead or behind it.
pointer = 1;
while (pointer < diffs.length) {
if (diffs[pointer - 1][0] === DIFF_DELETE &&
diffs[pointer][0] === DIFF_INSERT) {
deletion = diffs[pointer - 1][1];
insertion = diffs[pointer][1];
overlapLength1 = this.diffCommonOverlap(deletion, insertion);
overlapLength2 = this.diffCommonOverlap(insertion, deletion);
if (overlapLength1 >= overlapLength2) {
if (overlapLength1 >= deletion.length / 2 ||
overlapLength1 >= insertion.length / 2) {
// Overlap found. Insert an equality and trim the surrounding edits.
diffs.splice( pointer, 0, [ DIFF_EQUAL, insertion.substring( 0, overlapLength1 ) ] );
diffs[pointer - 1][1] =
deletion.substring(0, deletion.length - overlapLength1);
diffs[pointer + 1][1] = insertion.substring(overlapLength1);
pointer++;
}
} else {
if (overlapLength2 >= deletion.length / 2 ||
overlapLength2 >= insertion.length / 2) {
// Reverse overlap found.
// Insert an equality and swap and trim the surrounding edits.
diffs.splice( pointer, 0, [ DIFF_EQUAL, deletion.substring( 0, overlapLength2 ) ] );
diffs[pointer - 1][0] = DIFF_INSERT;
diffs[pointer - 1][1] =
insertion.substring(0, insertion.length - overlapLength2);
diffs[pointer + 1][0] = DIFF_DELETE;
diffs[pointer + 1][1] =
deletion.substring(overlapLength2);
pointer++;
}
}
pointer++;
}
pointer++;
}
};
/**
* Determine if the suffix of one string is the prefix of another.
* @param {string} text1 First string.
* @param {string} text2 Second string.
* @return {number} The number of characters common to the end of the first
* string and the start of the second string.
* @private
*/
DiffMatchPatch.prototype.diffCommonOverlap = function(text1, text2) {
var text1Length, text2Length, textLength,
best, length, pattern, found;
// Cache the text lengths to prevent multiple calls.
text1Length = text1.length;
text2Length = text2.length;
// Eliminate the null case.
if (text1Length === 0 || text2Length === 0) {
return 0;
}
// Truncate the longer string.
if (text1Length > text2Length) {
text1 = text1.substring(text1Length - text2Length);
} else if (text1Length < text2Length) {
text2 = text2.substring(0, text1Length);
}
textLength = Math.min(text1Length, text2Length);
// Quick check for the worst case.
if (text1 === text2) {
return textLength;
}
// Start by looking for a single character match
// and increase length until no match is found.
// Performance analysis: http://neil.fraser.name/news/2010/11/04/
best = 0;
length = 1;
while (true) {
pattern = text1.substring(textLength - length);
found = text2.indexOf(pattern);
if (found === -1) {
return best;
}
length += found;
if (found === 0 || text1.substring(textLength - length) ===
text2.substring(0, length)) {
best = length;
length++;
}
}
};
/**
* Split two texts into an array of strings. Reduce the texts to a string of
* hashes where each Unicode character represents one line.
* @param {string} text1 First string.
* @param {string} text2 Second string.
* @return {{chars1: string, chars2: string, lineArray: !Array.<string>}}
* An object containing the encoded text1, the encoded text2 and
* the array of unique strings.
* The zeroth element of the array of unique strings is intentionally blank.
* @private
*/
DiffMatchPatch.prototype.diffLinesToChars = function(text1, text2) {
var lineArray, lineHash, chars1, chars2;
lineArray = []; // e.g. lineArray[4] === 'Hello\n'
lineHash = {}; // e.g. lineHash['Hello\n'] === 4
// '\x00' is a valid character, but various debuggers don't like it.
// So we'll insert a junk entry to avoid generating a null character.
lineArray[0] = "";
/**
* Split a text into an array of strings. Reduce the texts to a string of
* hashes where each Unicode character represents one line.
* Modifies linearray and linehash through being a closure.
* @param {string} text String to encode.
* @return {string} Encoded string.
* @private
*/
function diffLinesToCharsMunge(text) {
var chars, lineStart, lineEnd, lineArrayLength, line;
chars = "";
// Walk the text, pulling out a substring for each line.
// text.split('\n') would would temporarily double our memory footprint.
// Modifying text would create many large strings to garbage collect.
lineStart = 0;
lineEnd = -1;
// Keeping our own length variable is faster than looking it up.
lineArrayLength = lineArray.length;
while (lineEnd < text.length - 1) {
lineEnd = text.indexOf("\n", lineStart);
if (lineEnd === -1) {
lineEnd = text.length - 1;
}
line = text.substring(lineStart, lineEnd + 1);
lineStart = lineEnd + 1;
if (lineHash.hasOwnProperty ? lineHash.hasOwnProperty(line) :
(lineHash[line] !== undefined)) {
chars += String.fromCharCode( lineHash[ line ] );
} else {
chars += String.fromCharCode(lineArrayLength);
lineHash[line] = lineArrayLength;
lineArray[lineArrayLength++] = line;
}
}
return chars;
}
chars1 = diffLinesToCharsMunge(text1);
chars2 = diffLinesToCharsMunge(text2);
return {
chars1: chars1,
chars2: chars2,
lineArray: lineArray
};
};
/**
* Rehydrate the text in a diff from a string of line hashes to real lines of
* text.
* @param {!Array.<!DiffMatchPatch.Diff>} diffs Array of diff tuples.
* @param {!Array.<string>} lineArray Array of unique strings.
* @private
*/
DiffMatchPatch.prototype.diffCharsToLines = function( diffs, lineArray ) {
var x, chars, text, y;
for ( x = 0; x < diffs.length; x++ ) {
chars = diffs[x][1];
text = [];
for ( y = 0; y < chars.length; y++ ) {
text[y] = lineArray[chars.charCodeAt(y)];
}
diffs[x][1] = text.join("");
}
};
/**
* Reorder and merge like edit sections. Merge equalities.
* Any edit section can move as long as it doesn't cross an equality.
* @param {!Array.<!DiffMatchPatch.Diff>} diffs Array of diff tuples.
*/
DiffMatchPatch.prototype.diffCleanupMerge = function(diffs) {
var pointer, countDelete, countInsert, textInsert, textDelete,
commonlength, changes;
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 prefixies.
commonlength = this.diffCommonPrefix(textInsert, textDelete);
if (commonlength !== 0) {
if ((pointer - countDelete - countInsert) > 0 &&
diffs[pointer - countDelete - countInsert - 1][0] ===
DIFF_EQUAL) {
diffs[pointer - countDelete - countInsert - 1][1] +=
textInsert.substring(0, commonlength);
} else {
diffs.splice( 0, 0, [ DIFF_EQUAL,
textInsert.substring( 0, commonlength )
] );
pointer++;
}
textInsert = textInsert.substring(commonlength);
textDelete = textDelete.substring(commonlength);
}
// Factor out any common suffixies.
commonlength = this.diffCommonSuffix(textInsert, textDelete);
if (commonlength !== 0) {
diffs[pointer][1] = textInsert.substring(textInsert.length -
commonlength) + diffs[pointer][1];
textInsert = textInsert.substring(0, textInsert.length -
commonlength);
textDelete = textDelete.substring(0, textDelete.length -
commonlength);
}
}
// Delete the offending records and add the merged ones.
if (countDelete === 0) {
diffs.splice( pointer - countInsert,
countDelete + countInsert, [ DIFF_INSERT, textInsert ] );
} else if (countInsert === 0) {
diffs.splice( pointer - countDelete,
countDelete + countInsert, [ DIFF_DELETE, textDelete ] );
} else {
diffs.splice( pointer - countDelete - countInsert,
countDelete + countInsert, [ DIFF_DELETE, textDelete ], [ DIFF_INSERT, textInsert ] );
}
pointer = pointer - countDelete - countInsert +
(countDelete ? 1 : 0) + (countInsert ? 1 : 0) + 1;
} else if (pointer !== 0 && diffs[pointer - 1][0] === DIFF_EQUAL) {
// Merge this equality with the previous one.
diffs[pointer - 1][1] += diffs[pointer][1];
diffs.splice(pointer, 1);
} else {
pointer++;
}
countInsert = 0;
countDelete = 0;
textDelete = "";
textInsert = "";
break;
}
}
if (diffs[diffs.length - 1][1] === "") {
diffs.pop(); // Remove the dummy entry at the end.
}
// Second pass: look for single edits surrounded on both sides by equalities
// which can be shifted sideways to eliminate an equality.
// e.g: A<ins>BA</ins>C -> <ins>AB</ins>AC
changes = false;
pointer = 1;
// Intentionally ignore the first and last element (don't need checking).
while (pointer < diffs.length - 1) {
if (diffs[pointer - 1][0] === DIFF_EQUAL &&
diffs[pointer + 1][0] === DIFF_EQUAL) {
// This is a single edit surrounded by equalities.
if ( diffs[ pointer ][ 1 ].substring( diffs[ pointer ][ 1 ].length -
diffs[ pointer - 1 ][ 1 ].length ) === 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 ( diffs[ pointer ][ 1 ].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);
//console.log(output);
diff.diffCleanupEfficiency(output);
text = diff.diffPrettyHtml(output);
return text;
};
}());
// jscs:enable
(function() {
// Deprecated QUnit.init - Ref #530
// Re-initialize the configuration options
QUnit.init = function() {
var tests, banner, result, qunit,
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 = [];
// Return on non-browser environments
// This is necessary to not break on node tests
if ( typeof window === "undefined" ) {
return;
}
qunit = id( "qunit" );
if ( qunit ) {
qunit.innerHTML =
"<h1 id='qunit-header'>" + escapeText( document.title ) + "</h1>" +
"h2>" +
"<div id='qunit-testrunner-toolbar'></div>" +
"h2>" +
"<ol id='qunit-tests'></ol>";
}
tests = id( "qunit-tests" );
banner = id( "qunit-banner" );
result = id( "qunit-testresult" );
if ( tests ) {
tests.innerHTML = "";
}
if ( banner ) {
banner.className = "";
}
if ( result ) {
result.parentNode.removeChild( result );
}
if ( tests ) {
result = document.createElement( "p" );
result.id = "qunit-testresult";
result.className = "result";
tests.parentNode.insertBefore( result, tests );
result.innerHTML = "Running...
> ";
}
};
// Don't load the HTML Reporter on non-Browser environments
if ( typeof window === "undefined" ) {
return;
}
var config = QUnit.config,
hasOwn = Object.prototype.hasOwnProperty,
defined = {
document: window.document !== undefined,
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 ) {
if ( hasClass( elem, name ) ) {
removeClass( elem, name );
} else {
addClass( 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 defined.document && document.getElementById && document.getElementById( name );
}
function getUrlConfigHtml() {
var i, j, val,
escaped, escapedTooltip,
selection = false,
len = config.urlConfig.length,
urlConfigHtml = "";
for ( i = 0; i < len; i++ ) {
val = config.urlConfig[ i ];
if ( typeof val === "string" ) {
val = {
id: val,
label: val
};
}
escaped = escapeText( val.id );
escapedTooltip = escapeText( val.tooltip );
if ( config[ val.id ] === undefined ) {
config[ val.id ] = QUnit.urlParams[ val.id ];
}
if ( !val.value || typeof val.value === "string" ) {
urlConfigHtml += " ( val.value ? " value='" + escapeText( val.value ) + "'" : "" ) +
( config[ val.id ] ? " checked='checked'" : "" ) +
" title='" + escapedTooltip + "' /><label for='qunit-urlconfig-" + escaped +
"' title='" + escapedTooltip + "'>" + val.label + "</label>";
} else {
urlConfigHtml += " ": label><select id='qunit-urlconfig-" + escaped +
"' name='" + escaped + "' title='" + escapedTooltip + "'><option></option>";
if ( QUnit.is( "array", val.value ) ) {
for ( j = 0; j < val.value.length; j++ ) {
escaped = escapeText( val.value[ j ] );
urlConfigHtml += "