From 6a882568b9fac11b352ee37c44e14b30d70c1a51 Mon Sep 17 00:00:00 2001
From: liabru <liabru@brm.io>
Date: Mon, 22 Jun 2015 10:58:09 +0100
Subject: [PATCH] initial work on browser tests

---
 .gitignore                     |   2 +
 demo/js/Demo.js                |   3 +
 tests/browser/TestDemo.js      | 168 ++++++++++
 tests/browser/lib/lodash.js    |  98 ++++++
 tests/browser/lib/resurrect.js | 542 +++++++++++++++++++++++++++++++++
 5 files changed, 813 insertions(+)
 create mode 100644 tests/browser/TestDemo.js
 create mode 100644 tests/browser/lib/lodash.js
 create mode 100644 tests/browser/lib/resurrect.js

diff --git a/.gitignore b/.gitignore
index ed24ce21..6ec1a08d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,5 @@ matter-doc-theme
 build/matter-dev.js
 build/matter-dev.min.js
 demo/js/lib/matter-dev.js
+tests/browser/diffs
+tests/browser/worlds
\ No newline at end of file
diff --git a/demo/js/Demo.js b/demo/js/Demo.js
index 2d23dcd3..8e75d60e 100644
--- a/demo/js/Demo.js
+++ b/demo/js/Demo.js
@@ -34,6 +34,8 @@
         _sceneEvents = [],
         _useInspector = window.location.hash.indexOf('-inspect') !== -1,
         _isMobile = /(ipad|iphone|ipod|android)/gi.test(navigator.userAgent);
+
+    window.Matter.Demo = Demo;
     
     // initialise the demo
 
@@ -51,6 +53,7 @@
         // create a Matter engine
         // NOTE: this is actually Matter.Engine.create(), see the aliases at top of this file
         _engine = Engine.create(container, options);
+        window.Matter.Demo._engine = _engine;
 
         // add a mouse controlled constraint
         _mouseConstraint = MouseConstraint.create(_engine);
diff --git a/tests/browser/TestDemo.js b/tests/browser/TestDemo.js
new file mode 100644
index 00000000..3d63cf9b
--- /dev/null
+++ b/tests/browser/TestDemo.js
@@ -0,0 +1,168 @@
+var page = require('webpage').create();
+var fs = require('fs');
+var Resurrect = require('./lib/resurrect');
+var _ = require('./lib/lodash');
+
+page.onConsoleMessage = function(msg) {
+    console.log(msg);
+};
+
+page.onError = function(msg) {
+    console.log(msg);
+};
+
+phantom.onError = function(msg, trace) {
+  var msgStack = ['PHANTOM ERROR: ' + msg];
+  if (trace && trace.length) {
+    msgStack.push('TRACE:');
+    trace.forEach(function(t) {
+      msgStack.push(' -> ' + (t.file || t.sourceURL) + ': ' + t.line + (t.function ? ' (in function ' + t.function +')' : ''));
+    });
+  }
+  console.error(msgStack.join('\n'));
+  phantom.exit(1);
+};
+
+var log = function(msg) {
+    console.log(JSON.stringify(msg));
+}
+
+var type = function(obj) {
+    // https://javascriptweblog.wordpress.com/2011/08/08/fixing-the-javascript-typeof-operator/
+    if (obj === global) {
+      return "global";
+    }
+    return ({}).toString.call(obj).match(/\s([a-z|A-Z]+)/)[1].toLowerCase();
+};
+
+var compare = function(objectA, objectB) {
+    if (objectA === objectB) {
+        return { equal: true };
+    }
+
+    if ((type(objectA) === 'undefined' && type(objectB) === 'null') 
+        || (type(objectA) === 'null' && type(objectB) === 'undefined')) {
+        return { equal: true };
+    }
+
+    if (type(objectA) !== type(objectB)) {
+        return { equal: false, expected: type(objectA), actual: type(objectB) };
+    }
+
+    if (_.isNumber(objectA)) {
+        if (objectA.toFixed(5) === objectB.toFixed(5)) {
+            return { equal: true };
+        } else {
+            return { equal: false, expected: objectA, actual: objectB };
+        }
+    } 
+
+    if (_.isArray(objectA)) {
+        var arrayDelta = [],
+            isEqual = true;
+    
+        for (var i = 0; i < Math.max(objectA.length, objectB.length); i++) {
+            var diff = compare(objectA[i], objectB[i]);
+            arrayDelta[i] = diff;
+
+            if (diff.equal !== true) {
+                isEqual = false;
+            }
+        }
+        
+        return isEqual ? { equal: true } : arrayDelta;
+    }
+
+    if (_.isObject(objectA)) {
+        var keys = _.union(_.keys(objectA), _.keys(objectB)),
+            objectDelta = { equal: true };
+
+        for (var i = 0; i < keys.length; i++) {
+            var key = keys[i],
+                diff = compare(objectA[key], objectB[key]);
+
+            if (diff.equal !== true) {
+                objectDelta[key] = diff;
+                objectDelta.equal = false;
+            }
+        }
+
+        return objectDelta.equal ? { equal: true } : objectDelta;
+    }
+
+    return { equal: false, expected: objectA, actual: objectB };
+};
+
+page.open('http://localhost:9000/demo/dev.html', function(status) {
+    var demos = page.evaluate(function() {
+        var options = Array.prototype.slice.call(document.getElementById('demo-select').options);
+        return options.map(function(o) { return o.value });
+    });
+
+    var worldsPath = 'tests/browser/worlds',
+        diffsPath = 'tests/browser/diffs'
+        resurrect = new Resurrect({ cleanup: true }),
+        frames = 10;
+
+    fs.removeTree(diffsPath);
+    fs.makeDirectory(diffsPath);
+
+    console.log(demos);
+
+    for (var i = 0; i < demos.length; i += 1) {
+        var demo = demos[i],
+            worldStartPath = worldsPath + '/' + demo + '/' + demo + '-0.json',
+            worldEndPath = worldsPath + '/' + demo + '/' + demo + '-' + frames + '.json',
+            worldStartDiffPath = diffsPath + '/' + demo + '/' + demo + '-0.json',
+            worldEndDiffPath = diffsPath + '/' + demo + '/' + demo + '-' + frames + '.json';
+
+        var worldStart = page.evaluate(function(demo) {
+            var engine = Matter.Demo._engine;
+            Matter.Runner.stop(engine);
+            Matter.Demo[demo]();
+            return engine.world;
+        }, demo);
+
+        var worldEnd = page.evaluate(function(demo, frames) {
+            var engine = Matter.Demo._engine;
+            for (var j = 0; j <= frames; j += 1) {
+                Matter.Events.trigger(engine, 'tick', { timestamp: engine.timing.timestamp });
+                Matter.Engine.update(engine, engine.timing.delta);
+                Matter.Events.trigger(engine, 'afterTick', { timestamp: engine.timing.timestamp });
+            }
+            return engine.world;
+        }, demo, frames);
+
+        if (fs.exists(worldStartPath)) {
+            var worldStartRef = resurrect.resurrect(fs.read(worldStartPath));
+            var worldStartDiff = compare(worldStart, worldStartRef);
+
+            if (!worldStartDiff.equal) {
+                fs.write(worldStartDiffPath, JSON.stringify(worldStartDiff, null, 2), 'w');
+                console.log(demo, 'start equal:', worldStartDiff.equal);
+            }
+        } else {
+            console.warn('no existing start reference world for', demo);
+            fs.write(worldStartPath, resurrect.stringify(worldStart), 'w');
+            console.log('wrote', worldEndPath);
+        }
+
+        if (fs.exists(worldEndPath)) {
+            var worldEndRef = resurrect.resurrect(fs.read(worldEndPath));
+            var worldEndDiff = compare(worldEnd, worldEndRef);
+
+            if (!worldEndDiff.equal) {
+                fs.write(worldEndDiffPath, JSON.stringify(worldEndDiff, null, 2), 'w');
+                console.log(demo, 'end equal:', worldEndDiff.equal);
+            }
+        } else {
+            console.warn('no existing end reference world for', demo);
+            fs.write(worldEndPath, resurrect.stringify(worldEnd), 'w');
+            console.log('wrote', worldEndPath);
+        }
+    }
+
+    console.log('done');
+
+    phantom.exit();
+});
\ No newline at end of file
diff --git a/tests/browser/lib/lodash.js b/tests/browser/lib/lodash.js
new file mode 100644
index 00000000..4d6e9ff0
--- /dev/null
+++ b/tests/browser/lib/lodash.js
@@ -0,0 +1,98 @@
+/**
+ * @license
+ * lodash 3.9.3 (Custom Build) lodash.com/license | Underscore.js 1.8.3 underscorejs.org/LICENSE
+ * Build: `lodash modern -o ./lodash.js`
+ */
+;(function(){function n(n,t){if(n!==t){var r=null===n,e=n===m,u=n===n,i=null===t,o=t===m,f=t===t;if(n>t&&!i||!u||r&&!o&&f||e&&f)return 1;if(n<t&&!r||!f||i&&!e&&u||o&&u)return-1}return 0}function t(n,t,r){for(var e=n.length,u=r?e:-1;r?u--:++u<e;)if(t(n[u],u,n))return u;return-1}function r(n,t,r){if(t!==t)return s(n,r);r-=1;for(var e=n.length;++r<e;)if(n[r]===t)return r;return-1}function e(n){return typeof n=="function"||false}function u(n){return typeof n=="string"?n:null==n?"":n+""}function i(n,t){for(var r=-1,e=n.length;++r<e&&-1<t.indexOf(n.charAt(r)););
+return r}function o(n,t){for(var r=n.length;r--&&-1<t.indexOf(n.charAt(r)););return r}function f(t,r){return n(t.a,r.a)||t.b-r.b}function l(n){return Nn[n]}function a(n){return Ln[n]}function c(n){return"\\"+Mn[n]}function s(n,t,r){var e=n.length;for(t+=r?0:-1;r?t--:++t<e;){var u=n[t];if(u!==u)return t}return-1}function p(n){return!!n&&typeof n=="object"}function h(n){return 160>=n&&9<=n&&13>=n||32==n||160==n||5760==n||6158==n||8192<=n&&(8202>=n||8232==n||8233==n||8239==n||8287==n||12288==n||65279==n);
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diff --git a/tests/browser/lib/resurrect.js b/tests/browser/lib/resurrect.js
new file mode 100644
index 00000000..8e56e278
--- /dev/null
+++ b/tests/browser/lib/resurrect.js
@@ -0,0 +1,542 @@
+/**
+ * # ResurrectJS
+ * @version 1.0.3
+ * @license Public Domain
+ *
+ * ResurrectJS preserves object behavior (prototypes) and reference
+ * circularity with a special JSON encoding. Unlike regular JSON,
+ * Date, RegExp, DOM objects, and `undefined` are also properly
+ * preserved.
+ *
+ * ## Examples
+ *
+ * function Foo() {}
+ * Foo.prototype.greet = function() { return "hello"; };
+ *
+ * // Behavior is preserved:
+ * var necromancer = new Resurrect();
+ * var json = necromancer.stringify(new Foo());
+ * var foo = necromancer.resurrect(json);
+ * foo.greet();  // => "hello"
+ *
+ * // References to the same object are preserved:
+ * json = necromancer.stringify([foo, foo]);
+ * var array = necromancer.resurrect(json);
+ * array[0] === array[1];  // => true
+ * array[1].greet();  // => "hello"
+ *
+ * // Dates are restored properly
+ * json = necromancer.stringify(new Date());
+ * var date = necromancer.resurrect(json);
+ * Object.prototype.toString.call(date);  // => "[object Date]"
+ *
+ * ## Options
+ *
+ * Options are provided to the constructor as an object with these
+ * properties:
+ *
+ *   prefix ('#'): A prefix string used for temporary properties added
+ *     to objects during serialization and deserialization. It is
+ *     important that you don't use any properties beginning with this
+ *     string. This option must be consistent between both
+ *     serialization and deserialization.
+ *
+ *   cleanup (false): Perform full property cleanup after both
+ *     serialization and deserialization using the `delete`
+ *     operator. This may cause performance penalties (breaking hidden
+ *     classes in V8) on objects that ResurrectJS touches, so enable
+ *     with care.
+ *
+ *   revive (true): Restore behavior (__proto__) to objects that have
+ *     been resurrected. If this is set to false during serialization,
+ *     resurrection information will not be encoded. You still get
+ *     circularity and Date support.
+ *
+ *   resolver (Resurrect.NamespaceResolver(window)): Converts between
+ *     a name and a prototype. Create a custom resolver if your
+ *     constructors are not stored in global variables. The resolver
+ *     has two methods: getName(object) and getPrototype(string).
+ *
+ * For example,
+ *
+ * var necromancer = new Resurrect({
+ *     prefix: '__#',
+ *     cleanup: true
+ * });
+ *
+ * ## Caveats
+ *
+ *   * With the default resolver, all constructors must be named and
+ *   stored in the global variable under that name. This is required
+ *   so that the prototypes can be looked up and reconnected at
+ *   resurrection time.
+ *
+ *   * The wrapper objects Boolean, String, and Number will be
+ *   unwrapped. This means extra properties added to these objects
+ *   will not be preserved.
+ *
+ *   * Functions cannot ever be serialized. Resurrect will throw an
+ *   error if a function is found when traversing a data structure.
+ *
+ * @see http://nullprogram.com/blog/2013/03/28/
+ */
+
+/**
+ * @param {Object} [options] See options documentation.
+ * @namespace
+ * @constructor
+ */
+function Resurrect(options) {
+    this.table = null;
+    this.prefix = '#';
+    this.cleanup = false;
+    this.revive = true;
+    for (var option in options) {
+        if (options.hasOwnProperty(option)) {
+            this[option] = options[option];
+        }
+    }
+    this.refcode = this.prefix + 'id';
+    this.origcode = this.prefix + 'original';
+    this.buildcode = this.prefix + '.';
+    this.valuecode = this.prefix + 'v';
+}
+
+if (module)
+    module.exports = Resurrect;
+
+/**
+ * Portable access to the global object (window, global).
+ * Uses indirect eval.
+ * @constant
+ */
+Resurrect.GLOBAL = (0, eval)('this');
+
+/**
+ * Escape special regular expression characters in a string.
+ * @param {string} string
+ * @returns {string} The string escaped for exact matches.
+ * @see http://stackoverflow.com/a/6969486
+ */
+Resurrect.escapeRegExp = function (string) {
+    return string.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, "\\$&");
+};
+
+/* Helper Objects */
+
+/**
+ * @param {string} [message]
+ * @constructor
+ */
+Resurrect.prototype.Error = function ResurrectError(message) {
+    this.message = message || '';
+    this.stack = new Error().stack;
+};
+Resurrect.prototype.Error.prototype = Object.create(Error.prototype);
+Resurrect.prototype.Error.prototype.name = 'ResurrectError';
+
+/**
+ * Resolves prototypes through the properties on an object and
+ * constructor names.
+ * @param {Object} scope
+ * @constructor
+ */
+Resurrect.NamespaceResolver = function(scope) {
+    this.scope = scope;
+};
+
+/**
+ * Gets the prototype of the given property name from an object. If
+ * not found, it throws an error.
+ * @param {string} name
+ * @returns {Object}
+ * @method
+ */
+Resurrect.NamespaceResolver.prototype.getPrototype = function(name) {
+    var constructor = this.scope[name];
+    if (constructor) {
+        return constructor.prototype;
+    } else {
+        throw new Resurrect.prototype.Error('Unknown constructor: ' + name);
+    }
+};
+
+/**
+ * Get the prototype name for an object, to be fetched later with getPrototype.
+ * @param {Object} object
+ * @returns {?string} Null if the constructor is Object.
+ * @method
+ */
+Resurrect.NamespaceResolver.prototype.getName = function(object) {
+    var constructor = object.constructor.name;
+    if (constructor == null) { // IE
+        var funcPattern = /^\s*function\s*([A-Za-z0-9_$]*)/;
+        constructor = funcPattern.exec(object.constructor)[1];
+    }
+
+    if (constructor === '') {
+        var msg = "Can't serialize objects with anonymous constructors.";
+        throw new Resurrect.prototype.Error(msg);
+    } else if (constructor === 'Object' || constructor === 'Array') {
+        return null;
+    } else {
+        return constructor;
+    }
+};
+
+/* Set the default resolver searches the global object. */
+Resurrect.prototype.resolver =
+    new Resurrect.NamespaceResolver(Resurrect.GLOBAL);
+
+/**
+ * Create a DOM node from HTML source; behaves like a constructor.
+ * @param {string} html
+ * @constructor
+ */
+Resurrect.Node = function(html) {
+    var div = document.createElement('div');
+    div.innerHTML = html;
+    return div.firstChild;
+};
+
+/* Type Tests */
+
+/**
+ * @param {string} type
+ * @returns {Function} A function that tests for type.
+ */
+Resurrect.is = function(type) {
+    var string = '[object ' + type + ']';
+    return function(object) {
+        return Object.prototype.toString.call(object) === string;
+    };
+};
+
+Resurrect.isArray = Resurrect.is('Array');
+Resurrect.isString = Resurrect.is('String');
+Resurrect.isBoolean = Resurrect.is('Boolean');
+Resurrect.isNumber = Resurrect.is('Number');
+Resurrect.isFunction = Resurrect.is('Function');
+Resurrect.isDate = Resurrect.is('Date');
+Resurrect.isRegExp = Resurrect.is('RegExp');
+Resurrect.isObject = Resurrect.is('Object');
+
+Resurrect.isAtom = function(object) {
+    return !Resurrect.isObject(object) && !Resurrect.isArray(object);
+};
+
+/**
+ * @param {*} object
+ * @returns {boolean} True if object is a primitive or a primitive wrapper.
+ */
+Resurrect.isPrimitive = function(object) {
+    return object == null ||
+        Resurrect.isNumber(object) ||
+        Resurrect.isString(object) ||
+        Resurrect.isBoolean(object);
+};
+
+/* Methods */
+
+/**
+ * Create a reference (encoding) to an object.
+ * @param {(Object|undefined)} object
+ * @returns {Object}
+ * @method
+ */
+Resurrect.prototype.ref = function(object) {
+    var ref = {};
+    if (object === undefined) {
+        ref[this.prefix] = -1;
+    } else {
+        ref[this.prefix] = object[this.refcode];
+    }
+    return ref;
+};
+
+/**
+ * Lookup an object in the table by reference object.
+ * @param {Object} ref
+ * @returns {(Object|undefined)}
+ * @method
+ */
+Resurrect.prototype.deref = function(ref) {
+    return this.table[ref[this.prefix]];
+};
+
+/**
+ * Put a temporary identifier on an object and store it in the table.
+ * @param {Object} object
+ * @returns {number} The unique identifier number.
+ * @method
+ */
+Resurrect.prototype.tag = function(object) {
+    if (this.revive) {
+        var constructor = this.resolver.getName(object);
+        if (constructor) {
+            var proto = Object.getPrototypeOf(object);
+            if (this.resolver.getPrototype(constructor) !== proto) {
+                throw new this.Error('Constructor mismatch!');
+            } else {
+                object[this.prefix] = constructor;
+            }
+        }
+    }
+    object[this.refcode] = this.table.length;
+    this.table.push(object);
+    return object[this.refcode];
+};
+
+/**
+ * Create a builder object (encoding) for serialization.
+ * @param {string} name The name of the constructor.
+ * @param value The value to pass to the constructor.
+ * @returns {Object}
+ * @method
+ */
+Resurrect.prototype.builder = function(name, value) {
+    var builder = {};
+    builder[this.buildcode] = name;
+    builder[this.valuecode] = value;
+    return builder;
+};
+
+/**
+ * Build a value from a deserialized builder.
+ * @param {Object} ref
+ * @returns {Object}
+ * @method
+ * @see http://stackoverflow.com/a/14378462
+ * @see http://nullprogram.com/blog/2013/03/24/
+ */
+Resurrect.prototype.build = function(ref) {
+    var type = ref[this.buildcode].split(/\./).reduce(function(object, name) {
+        return object[name];
+    }, Resurrect.GLOBAL);
+    /* Brilliant hack by kybernetikos: */
+    var args = [null].concat(ref[this.valuecode]);
+    var factory = type.bind.apply(type, args);
+    var result = new factory();
+    if (Resurrect.isPrimitive(result)) {
+        return result.valueOf(); // unwrap
+    } else {
+        return result;
+    }
+};
+
+/**
+ * Dereference or build an object or value from an encoding.
+ * @param {Object} ref
+ * @returns {(Object|undefined)}
+ * @method
+ */
+Resurrect.prototype.decode = function(ref) {
+    if (this.prefix in ref) {
+        return this.deref(ref);
+    } else if (this.buildcode in ref) {
+        return this.build(ref);
+    } else {
+        throw new this.Error('Unknown encoding.');
+    }
+};
+
+/**
+ * @param {Object} object
+ * @returns {boolean} True if the provided object is tagged for serialization.
+ * @method
+ */
+Resurrect.prototype.isTagged = function(object) {
+    return (this.refcode in object) && (object[this.refcode] != null);
+};
+
+/**
+ * Visit root and all its ancestors, visiting atoms with f.
+ * @param {*} root
+ * @param {Function} f
+ * @param {Function} replacer
+ * @returns {*} A fresh copy of root to be serialized.
+ * @method
+ */
+Resurrect.prototype.visit = function(root, f, replacer) {
+    if (Resurrect.isAtom(root)) {
+        return f(root);
+    } else if (!this.isTagged(root)) {
+        var copy = null;
+        if (Resurrect.isArray(root)) {
+            copy = [];
+            root[this.refcode] = this.tag(copy);
+            for (var i = 0; i < root.length; i++) {
+                copy.push(this.visit(root[i], f, replacer));
+            }
+        } else { /* Object */
+            copy = Object.create(Object.getPrototypeOf(root));
+            root[this.refcode] = this.tag(copy);
+            for (var key in root) {
+                var value = root[key];
+                if (root.hasOwnProperty(key)) {
+                    if (replacer && value !== undefined) {
+                        // Call replacer like JSON.stringify's replacer
+                        value = replacer.call(root, key, root[key]);
+                        if (value === undefined) {
+                            continue; // Omit from result
+                        }
+                    }
+                    copy[key] = this.visit(value, f, replacer);
+                }
+            }
+        }
+        copy[this.origcode] = root;
+        return this.ref(copy);
+    } else {
+        return this.ref(root);
+    }
+};
+
+/**
+ * Manage special atom values, possibly returning an encoding.
+ * @param {*} atom
+ * @returns {*}
+ * @method
+ */
+Resurrect.prototype.handleAtom = function(atom) {
+    var Node = Resurrect.GLOBAL.Node || function() {};
+    if (Resurrect.isFunction(atom)) {
+        throw new this.Error("Can't serialize functions.");
+    } else if (atom instanceof Node) {
+        var xmls = new XMLSerializer();
+        return this.builder('Resurrect.Node', [xmls.serializeToString(atom)]);
+    } else if (Resurrect.isDate(atom)) {
+        return this.builder('Date', [atom.toISOString()]);
+    } else if (Resurrect.isRegExp(atom)) {
+        var args = atom.toString().match(/\/(.+)\/([gimy]*)/).slice(1);
+        return this.builder('RegExp', args);
+    } else if (atom === undefined) {
+        return this.ref(undefined);
+    } else if (Resurrect.isNumber(atom) && (isNaN(atom) || !isFinite(atom))) {
+        return this.builder('Number', [atom.toString()]);
+    } else {
+        return atom;
+    }
+};
+
+/**
+ * Hides intrusive keys from a user-supplied replacer.
+ * @param {Function} replacer function of two arguments (key, value)
+ * @returns {Function} A function that skips the replacer for intrusive keys.
+ * @method
+ */
+Resurrect.prototype.replacerWrapper = function(replacer) {
+    var skip = new RegExp('^' + Resurrect.escapeRegExp(this.prefix));
+    return function(k, v) {
+        if (skip.test(k)) {
+            return v;
+        } else {
+            return replacer(k, v);
+        }
+    };
+};
+
+/**
+ * Serialize an arbitrary JavaScript object, carefully preserving it.
+ * @param {*} object
+ * @param {(Function|Array)} replacer
+ * @param {string} space
+ * @method
+ */
+Resurrect.prototype.stringify = function(object, replacer, space) {
+    if (Resurrect.isFunction(replacer)) {
+        replacer = this.replacerWrapper(replacer);
+    } else if (Resurrect.isArray(replacer)) {
+        var acceptKeys = replacer;
+        replacer = function(k, v) {
+            return acceptKeys.indexOf(k) >= 0 ? v : undefined;
+        };
+    }
+    if (Resurrect.isAtom(object)) {
+        return JSON.stringify(this.handleAtom(object), replacer, space);
+    } else {
+        this.table = [];
+        this.visit(object, this.handleAtom.bind(this), replacer);
+        for (var i = 0; i < this.table.length; i++) {
+            if (this.cleanup) {
+                delete this.table[i][this.origcode][this.refcode];
+            } else {
+                this.table[i][this.origcode][this.refcode] = null;
+            }
+            delete this.table[i][this.refcode];
+            delete this.table[i][this.origcode];
+        }
+        var table = this.table;
+        this.table = null;
+        return JSON.stringify(table, null, space);
+    }
+};
+
+/**
+ * Restore the __proto__ of the given object to the proper value.
+ * @param {Object} object
+ * @returns {Object} Its argument, or a copy, with the prototype restored.
+ * @method
+ */
+Resurrect.prototype.fixPrototype = function(object) {
+    if (this.prefix in object) {
+        var name = object[this.prefix];
+        var prototype = this.resolver.getPrototype(name);
+        if ('__proto__' in object) {
+            object.__proto__ = prototype;
+            if (this.cleanup) {
+                delete object[this.prefix];
+            }
+            return object;
+        } else { // IE
+            var copy = Object.create(prototype);
+            for (var key in object) {
+                if (object.hasOwnProperty(key) && key !== this.prefix) {
+                    copy[key] = object[key];
+                }
+            }
+            return copy;
+        }
+    } else {
+        return object;
+    }
+};
+
+/**
+ * Deserialize an encoded object, restoring circularity and behavior.
+ * @param {string} string
+ * @returns {*} The decoded object or value.
+ * @method
+ */
+Resurrect.prototype.resurrect = function(string) {
+    var result = null;
+    var data = JSON.parse(string);
+    if (Resurrect.isArray(data)) {
+        this.table = data;
+        /* Restore __proto__. */
+        if (this.revive) {
+            for (var i = 0; i < this.table.length; i++) {
+                this.table[i] = this.fixPrototype(this.table[i]);
+            }
+        }
+        /* Re-establish object references and construct atoms. */
+        for (i = 0; i < this.table.length; i++) {
+            var object = this.table[i];
+            for (var key in object) {
+                if (object.hasOwnProperty(key)) {
+                    if (!(Resurrect.isAtom(object[key]))) {
+                        object[key] = this.decode(object[key]);
+                    }
+                }
+            }
+        }
+        result = this.table[0];
+    } else if (Resurrect.isObject(data)) {
+        this.table = [];
+        result = this.decode(data);
+    } else {
+        result = data;
+    }
+    this.table = null;
+    return result;
+};