From 5cb63ce3495f4dad78acbb8f2c924bff3612e6e8 Mon Sep 17 00:00:00 2001
From: Philip Woods <elzairthesorcerer@gmail.com>
Date: Tue, 5 Aug 2014 17:17:14 -0400
Subject: [PATCH] Added Key( obj ) Assert to determine if a string is a
 property in a gien object

---
 README.md             |  1 +
 dist/extras.js        |  2 +-
 dist/validator.js     | 22 ++++++++++++++++++++--
 dist/validator.min.js |  4 ++--
 src/validator.js      | 18 ++++++++++++++++++
 tests/tests.js        |  8 ++++++++
 6 files changed, 50 insertions(+), 5 deletions(-)

diff --git a/README.md b/README.md
index bba50dd..7f066f8 100644
--- a/README.md
+++ b/README.md
@@ -197,6 +197,7 @@ new Assert().Regexp( value );
 new Assert().Required();
 new Assert().Unique();
 new Assert().Unique( { key: value } );
+new Assert().Key( { key1: val1, ... } );
 
 // in extras.js
 new Assert().Eql( object );
diff --git a/dist/extras.js b/dist/extras.js
index c36c863..1d31687 100644
--- a/dist/extras.js
+++ b/dist/extras.js
@@ -1,5 +1,5 @@
 /*!
 * Part of validator.js
-* Version 1.0.0 - built Sun Aug 03 2014 17:42:31
+* Version 1.0.0 - built Tue Aug 05 2014 17:14:57
 */
 !function(a){"function"==typeof define&&define.amd?define(["validator"],a):"object"==typeof exports?module.exports=a(require("./validator.js")):a(window["undefined"!=typeof validatorjs_ns?validatorjs_ns:"Validator"])}(function(a){a.Assert.prototype.Eql=function(c){if(this.__class__="Eql","undefined"==typeof c)throw new Error("Equal must be instanciated with an Array or an Object");return this.eql=c,this.validate=function(c){var d="function"==typeof this.eql?this.eql(c):this.eql;if(!b.eql(d,c))throw new a.Violation(this,c,{eql:d});return!0},this},a.Assert.prototype.Mac=function(){return this.__class__="Mac",this.validate=function(b){var c=/^(?:[0-9A-F]{2}:){5}[0-9A-F]{2}$/i;if("string"!=typeof b)throw new a.Violation(this,b,{value:Validator.errorCode.must_be_a_string});if(!c.test(b))throw new a.Violation(this,b);return!0},this},a.Assert.prototype.IPv4=function(){return this.__class__="IPv4",this.validate=function(b){var c=/^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/;if("string"!=typeof b)throw new a.Violation(this,b,{value:Validator.errorCode.must_be_a_string});if(!c.test(b))throw new a.Violation(this,b);return!0},this};var b={eql:function(a,b){if(a===b)return!0;if("undefined"!=typeof Buffer&&Buffer.isBuffer(a)&&Buffer.isBuffer(b)){if(a.length!==b.length)return!1;for(var c=0;c<a.length;c++)if(a[c]!==b[c])return!1;return!0}return a instanceof Date&&b instanceof Date?a.getTime()===b.getTime():"object"!=typeof a&&"object"!=typeof b?a==b:this.objEquiv(a,b)},isUndefinedOrNull:function(a){return null===a||"undefined"==typeof a},isArguments:function(a){return"[object Arguments]"==Object.prototype.toString.call(a)},keys:function(a){if(Object.keys)return Object.keys(a);var b=[];for(var c in a)Object.prototype.hasOwnProperty.call(a,c)&&b.push(c);return b},objEquiv:function(a,b){if(this.isUndefinedOrNull(a)||this.isUndefinedOrNull(b))return!1;if(a.prototype!==b.prototype)return!1;if(this.isArguments(a))return this.isArguments(b)?eql(pSlice.call(a),pSlice.call(b)):!1;try{var c,d,e=this.keys(a),f=this.keys(b);if(e.length!==f.length)return!1;for(e.sort(),f.sort(),d=e.length-1;d>=0;d--)if(e[d]!=f[d])return!1;for(d=e.length-1;d>=0;d--)if(c=e[d],!this.eql(a[c],b[c]))return!1;return!0}catch(g){return!1}}}});
\ No newline at end of file
diff --git a/dist/validator.js b/dist/validator.js
index 0c33608..74a9195 100644
--- a/dist/validator.js
+++ b/dist/validator.js
@@ -1,7 +1,7 @@
 /*!
 * validator.js
 * Guillaume Potier - <guillaume@wisembly.com>
-* Version 1.0.0 - built Sun Aug 03 2014 17:42:31
+* Version 1.0.0 - built Tue Aug 05 2014 17:14:57
 * MIT Licensed
 *
 */
@@ -489,7 +489,7 @@
         var result, validator = new Validator(), count = 0, failures = {}, groups = this.groups.length ? this.groups : group;
 
         if ( !_isArray( collection ) )
-          throw new Violation( this, array, { value: Validator.errorCode.must_be_an_array } );
+          throw new Violation( this, collection, { value: Validator.errorCode.must_be_an_array } );
 
         for ( var i = 0; i < collection.length; i++ ) {
           result = this.constraint ?
@@ -628,6 +628,24 @@
       return this;
     },
 
+    Key: function ( obj ) {
+      this.__class__ = 'Key';
+
+      if ( 'object' !== typeof obj )
+        throw new Error( 'Must pass object to Key Assertion' );
+
+      this.obj = obj;
+      
+      this.validate = function ( value ) {
+        if ( true !== ( obj.hasOwnProperty( value ) ) )
+          throw new Violation( this, value, { obj: this.obj } );
+
+        return true;
+      };
+
+      return this;
+    },
+
     Length: function ( boundaries ) {
       this.__class__ = 'Length';
 
diff --git a/dist/validator.min.js b/dist/validator.min.js
index 7da6dc0..e8d661e 100644
--- a/dist/validator.min.js
+++ b/dist/validator.min.js
@@ -1,8 +1,8 @@
 /*!
 * validator.js
 * Guillaume Potier - <guillaume@wisembly.com>
-* Version 1.0.0 - built Sun Aug 03 2014 17:42:31
+* Version 1.0.0 - built Tue Aug 05 2014 17:14:57
 * MIT Licensed
 *
 */
-!function(){var a={},b=function(a){this.__class__="Validator",this.__version__="1.0.0",this.options=a||{},this.bindingKey=this.options.bindingKey||"_validatorjsConstraint"};b.prototype={constructor:b,validate:function(a,b,c){if("string"!=typeof a&&"object"!=typeof a)throw new Error("You must validate an object or a string");return"string"==typeof a||g(a)?this._validateString(a,b,c):this.isBinded(a)?this._validateBindedObject(a,b):this._validateObject(a,b,c)},bind:function(a,b){if("object"!=typeof a)throw new Error("Must bind a Constraint to an object");return a[this.bindingKey]=new c(b),this},unbind:function(a){return"undefined"==typeof a._validatorjsConstraint?this:(delete a[this.bindingKey],this)},isBinded:function(a){return"undefined"!=typeof a[this.bindingKey]},getBinded:function(a){return this.isBinded(a)?a[this.bindingKey]:null},_validateString:function(a,b,c){var f,h=[];g(b)||(b=[b]);for(var i=0;i<b.length;i++){if(!(b[i]instanceof e))throw new Error("You must give an Assert or an Asserts array to validate a string");f=b[i].check(a,c),f instanceof d&&h.push(f)}return h.length?h:!0},_validateObject:function(a,b,d){if("object"!=typeof b)throw new Error("You must give a constraint to validate an object");return b instanceof c?b.check(a,d):new c(b).check(a,d)},_validateBindedObject:function(a,b){return a[this.bindingKey].check(a,b)}},b.errorCode={must_be_a_string:"must_be_a_string",must_be_an_array:"must_be_an_array",must_be_a_number:"must_be_a_number",must_be_a_string_or_array:"must_be_a_string_or_array"};var c=function(a,b){if(this.__class__="Constraint",this.options=b||{},this.nodes={},a)try{this._bootstrap(a)}catch(c){throw new Error("Should give a valid mapping object to Constraint",c,a)}};c.prototype={constructor:c,check:function(a,b){var c,d={};for(var h in this.nodes){for(var i=!1,j=this.get(h),k=g(j)?j:[j],l=k.length-1;l>=0;l--)"Required"!==k[l].__class__||(i=k[l].requiresValidation(b));if(this.has(h,a)||this.options.strict||i)try{this.has(h,this.options.strict||i?a:void 0)||(new e).HaveProperty(h).validate(a),c=this._check(h,a[h],b),(g(c)&&c.length>0||!g(c)&&!f(c))&&(d[h]=c)}catch(m){d[h]=m}}return f(d)?!0:d},add:function(a,b){if(b instanceof e||g(b)&&b[0]instanceof e)return this.nodes[a]=b,this;if("object"==typeof b&&!g(b))return this.nodes[a]=b instanceof c?b:new c(b),this;throw new Error("Should give an Assert, an Asserts array, a Constraint",b)},has:function(a,b){return b="undefined"!=typeof b?b:this.nodes,"undefined"!=typeof b[a]},get:function(a,b){return this.has(a)?this.nodes[a]:b||null},remove:function(a){var b=[];for(var c in this.nodes)c!==a&&(b[c]=this.nodes[c]);return this.nodes=b,this},_bootstrap:function(a){if(a instanceof c)return this.nodes=a.nodes;for(var b in a)this.add(b,a[b])},_check:function(a,b,d){if(this.nodes[a]instanceof e)return this._checkAsserts(b,[this.nodes[a]],d);if(g(this.nodes[a]))return this._checkAsserts(b,this.nodes[a],d);if(this.nodes[a]instanceof c)return this.nodes[a].check(b,d);throw new Error("Invalid node",this.nodes[a])},_checkAsserts:function(a,b,c){for(var d,e=[],f=0;f<b.length;f++)d=b[f].check(a,c),"undefined"!=typeof d&&!0!==d&&e.push(d);return e}};var d=function(a,b,c){if(this.__class__="Violation",!(a instanceof e))throw new Error("Should give an assertion implementing the Assert interface");this.assert=a,this.value=b,"undefined"!=typeof c&&(this.violation=c)};d.prototype={show:function(){var a={assert:this.assert.__class__,value:this.value};return this.violation&&(a.violation=this.violation),a},__toString:function(){return"undefined"!=typeof this.violation&&(this.violation='", '+this.getViolation().constraint+" expected was "+this.getViolation().expected),this.assert.__class__+' assert failed for "'+this.value+this.violation||""},getViolation:function(){var a,b;for(a in this.violation)b=this.violation[a];return{constraint:a,expected:b}}};var e=function(a){this.__class__="Assert",this.__parentClass__=this.__class__,this.groups=[],"undefined"!=typeof a&&this.addGroup(a)};e.prototype={construct:e,requiresValidation:function(a){return a&&!this.hasGroup(a)?!1:!a&&this.hasGroups()?!1:!0},check:function(a,b){if(this.requiresValidation(b))try{return this.validate(a,b)}catch(c){return c}},hasGroup:function(a){return g(a)?this.hasOneOf(a):"Any"===a?!0:this.hasGroups()?-1!==this.groups.indexOf(a):"Default"===a},hasOneOf:function(a){for(var b=0;b<a.length;b++)if(this.hasGroup(a[b]))return!0;return!1},hasGroups:function(){return this.groups.length>0},addGroup:function(a){return g(a)?this.addGroups(a):(this.hasGroup(a)||this.groups.push(a),this)},removeGroup:function(a){for(var b=[],c=0;c<this.groups.length;c++)a!==this.groups[c]&&b.push(this.groups[c]);return this.groups=b,this},addGroups:function(a){for(var b=0;b<a.length;b++)this.addGroup(a[b]);return this},HaveProperty:function(a){return this.__class__="HaveProperty",this.node=a,this.validate=function(a){if("undefined"==typeof a[this.node])throw new d(this,a,{value:this.node});return!0},this},Blank:function(){return this.__class__="Blank",this.validate=function(a){if("string"!=typeof a)throw new d(this,a,{value:b.errorCode.must_be_a_string});if(""!==a.replace(/^\s+/g,"").replace(/\s+$/g,""))throw new d(this,a);return!0},this},Callback:function(a){if(this.__class__="Callback",this.arguments=Array.prototype.slice.call(arguments),1===this.arguments.length?this.arguments=[]:this.arguments.splice(0,1),"function"!=typeof a)throw new Error("Callback must be instanciated with a function");return this.fn=a,this.validate=function(a){var b=this.fn.apply(this,[a].concat(this.arguments));if(!0!==b)throw new d(this,a,{result:b});return!0},this},Choice:function(a){if(this.__class__="Choice",!g(a)&&"function"!=typeof a)throw new Error("Choice must be instanciated with an array or a function");return this.list=a,this.validate=function(a){for(var b="function"==typeof this.list?this.list():this.list,c=0;c<b.length;c++)if(a===b[c])return!0;throw new d(this,a,{choices:b})},this},Collection:function(a){return this.__class__="Collection",this.constraint="undefined"!=typeof a?a instanceof e?a:new c(a):!1,this.validate=function(a,c){var e,h=new b,i=0,j={},k=this.groups.length?this.groups:c;if(!g(a))throw new d(this,array,{value:b.errorCode.must_be_an_array});for(var l=0;l<a.length;l++)e=this.constraint?h.validate(a[l],this.constraint,k):h.validate(a[l],k),f(e)||(j[i]=e),i++;return f(j)?!0:j},this},Count:function(a){return this.__class__="Count",this.count=a,this.validate=function(a){if(!g(a))throw new d(this,a,{value:b.errorCode.must_be_an_array});var c="function"==typeof this.count?this.count(a):this.count;if(isNaN(Number(c)))throw new Error("Count must be a valid interger",c);if(c!==a.length)throw new d(this,a,{count:c});return!0},this},Email:function(){return this.__class__="Email",this.validate=function(a){var c=/^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))$/i;if("string"!=typeof a)throw new d(this,a,{value:b.errorCode.must_be_a_string});if(!c.test(a))throw new d(this,a);return!0},this},EqualTo:function(a){if(this.__class__="EqualTo","undefined"==typeof a)throw new Error("EqualTo must be instanciated with a value or a function");return this.reference=a,this.validate=function(a){var b="function"==typeof this.reference?this.reference(a):this.reference;if(b!==a)throw new d(this,a,{value:b});return!0},this},GreaterThan:function(a){if(this.__class__="GreaterThan","undefined"==typeof a)throw new Error("Should give a threshold value");return this.threshold=a,this.validate=function(a){if(""===a||isNaN(Number(a)))throw new d(this,a,{value:b.errorCode.must_be_a_number});if(this.threshold>=a)throw new d(this,a,{threshold:this.threshold});return!0},this},GreaterThanOrEqual:function(a){if(this.__class__="GreaterThanOrEqual","undefined"==typeof a)throw new Error("Should give a threshold value");return this.threshold=a,this.validate=function(a){if(""===a||isNaN(Number(a)))throw new d(this,a,{value:b.errorCode.must_be_a_number});if(this.threshold>a)throw new d(this,a,{threshold:this.threshold});return!0},this},InstanceOf:function(a){if(this.__class__="InstanceOf","undefined"==typeof a)throw new Error("InstanceOf must be instanciated with a value");return this.classRef=a,this.validate=function(a){if(!0!=a instanceof this.classRef)throw new d(this,a,{classRef:this.classRef});return!0},this},Length:function(a){if(this.__class__="Length",!a.min&&!a.max)throw new Error("Lenth assert must be instanciated with a { min: x, max: y } object");return this.min=a.min,this.max=a.max,this.validate=function(a){if("string"!=typeof a&&!g(a))throw new d(this,a,{value:b.errorCode.must_be_a_string_or_array});if("undefined"!=typeof this.min&&this.min===this.max&&a.length!==this.min)throw new d(this,a,{min:this.min,max:this.max});if("undefined"!=typeof this.max&&a.length>this.max)throw new d(this,a,{max:this.max});if("undefined"!=typeof this.min&&a.length<this.min)throw new d(this,a,{min:this.min});return!0},this},LessThan:function(a){if(this.__class__="LessThan","undefined"==typeof a)throw new Error("Should give a threshold value");return this.threshold=a,this.validate=function(a){if(""===a||isNaN(Number(a)))throw new d(this,a,{value:b.errorCode.must_be_a_number});if(this.threshold<=a)throw new d(this,a,{threshold:this.threshold});return!0},this},LessThanOrEqual:function(a){if(this.__class__="LessThanOrEqual","undefined"==typeof a)throw new Error("Should give a threshold value");return this.threshold=a,this.validate=function(a){if(""===a||isNaN(Number(a)))throw new d(this,a,{value:b.errorCode.must_be_a_number});if(this.threshold<a)throw new d(this,a,{threshold:this.threshold});return!0},this},NotNull:function(){return this.__class__="NotNull",this.validate=function(a){if(null===a||"undefined"==typeof a)throw new d(this,a);return!0},this},NotBlank:function(){return this.__class__="NotBlank",this.validate=function(a){if("string"!=typeof a)throw new d(this,a,{value:b.errorCode.must_be_a_string});if(""===a.replace(/^\s+/g,"").replace(/\s+$/g,""))throw new d(this,a);return!0},this},Null:function(){return this.__class__="Null",this.validate=function(a){if(null!==a)throw new d(this,a);return!0},this},Range:function(a,b){if(this.__class__="Range","undefined"==typeof a||"undefined"==typeof b)throw new Error("Range assert expects min and max values");return this.min=a,this.max=b,this.validate=function(a){try{return"string"==typeof a&&isNaN(Number(a))||g(a)?(new e).Length({min:this.min,max:this.max}).validate(a):(new e).GreaterThanOrEqual(this.min).validate(a)&&(new e).LessThanOrEqual(this.max).validate(a),!0}catch(b){throw new d(this,a,b.violation)}return!0},this},Regexp:function(a,c){if(this.__class__="Regexp","undefined"==typeof a)throw new Error("You must give a regexp");return this.regexp=a,this.flag=c||"",this.validate=function(a){if("string"!=typeof a)throw new d(this,a,{value:b.errorCode.must_be_a_string});if(!new RegExp(this.regexp,this.flag).test(a))throw new d(this,a,{regexp:this.regexp,flag:this.flag});return!0},this},Required:function(){return this.__class__="Required",this.validate=function(a){if("undefined"==typeof a)throw new d(this,a);try{"string"==typeof a?(new e).NotNull().validate(a)&&(new e).NotBlank().validate(a):!0===g(a)&&(new e).Length({min:1}).validate(a)}catch(b){throw new d(this,a)}return!0},this},Unique:function(a){return this.__class__="Unique","object"==typeof a&&(this.key=a.key),this.validate=function(a){var c,e=[];if(!g(a))throw new d(this,a,{value:b.errorCode.must_be_an_array});for(var f=0;f<a.length;f++)if(c="object"==typeof a[f]?a[f][this.key]:a[f],"undefined"!=typeof c){if(-1!==e.indexOf(c))throw new d(this,a,{value:c});e.push(c)}return!0},this}},a.Assert=e,a.Validator=b,a.Violation=d,a.Constraint=c,Array.prototype.indexOf||(Array.prototype.indexOf=function(a){"use strict";if(null===this)throw new TypeError;var b=Object(this),c=b.length>>>0;if(0===c)return-1;var d=0;if(arguments.length>1&&(d=Number(arguments[1]),d!=d?d=0:0!==d&&1/0!=d&&d!=-1/0&&(d=(d>0||-1)*Math.floor(Math.abs(d)))),d>=c)return-1;for(var e=d>=0?d:Math.max(c-Math.abs(d),0);c>e;e++)if(e in b&&b[e]===a)return e;return-1});var f=function(a){for(var b in a)return!1;return!0},g=function(a){return"[object Array]"===Object.prototype.toString.call(a)};"function"==typeof define&&define.amd?define(function(){return a}):"undefined"!=typeof module&&module.exports?module.exports=a:window["undefined"!=typeof validatorjs_ns?validatorjs_ns:"Validator"]=a}();
\ No newline at end of file
+!function(){var a={},b=function(a){this.__class__="Validator",this.__version__="1.0.0",this.options=a||{},this.bindingKey=this.options.bindingKey||"_validatorjsConstraint"};b.prototype={constructor:b,validate:function(a,b,c){if("string"!=typeof a&&"object"!=typeof a)throw new Error("You must validate an object or a string");return"string"==typeof a||g(a)?this._validateString(a,b,c):this.isBinded(a)?this._validateBindedObject(a,b):this._validateObject(a,b,c)},bind:function(a,b){if("object"!=typeof a)throw new Error("Must bind a Constraint to an object");return a[this.bindingKey]=new c(b),this},unbind:function(a){return"undefined"==typeof a._validatorjsConstraint?this:(delete a[this.bindingKey],this)},isBinded:function(a){return"undefined"!=typeof a[this.bindingKey]},getBinded:function(a){return this.isBinded(a)?a[this.bindingKey]:null},_validateString:function(a,b,c){var f,h=[];g(b)||(b=[b]);for(var i=0;i<b.length;i++){if(!(b[i]instanceof e))throw new Error("You must give an Assert or an Asserts array to validate a string");f=b[i].check(a,c),f instanceof d&&h.push(f)}return h.length?h:!0},_validateObject:function(a,b,d){if("object"!=typeof b)throw new Error("You must give a constraint to validate an object");return b instanceof c?b.check(a,d):new c(b).check(a,d)},_validateBindedObject:function(a,b){return a[this.bindingKey].check(a,b)}},b.errorCode={must_be_a_string:"must_be_a_string",must_be_an_array:"must_be_an_array",must_be_a_number:"must_be_a_number",must_be_a_string_or_array:"must_be_a_string_or_array"};var c=function(a,b){if(this.__class__="Constraint",this.options=b||{},this.nodes={},a)try{this._bootstrap(a)}catch(c){throw new Error("Should give a valid mapping object to Constraint",c,a)}};c.prototype={constructor:c,check:function(a,b){var c,d={};for(var h in this.nodes){for(var i=!1,j=this.get(h),k=g(j)?j:[j],l=k.length-1;l>=0;l--)"Required"!==k[l].__class__||(i=k[l].requiresValidation(b));if(this.has(h,a)||this.options.strict||i)try{this.has(h,this.options.strict||i?a:void 0)||(new e).HaveProperty(h).validate(a),c=this._check(h,a[h],b),(g(c)&&c.length>0||!g(c)&&!f(c))&&(d[h]=c)}catch(m){d[h]=m}}return f(d)?!0:d},add:function(a,b){if(b instanceof e||g(b)&&b[0]instanceof e)return this.nodes[a]=b,this;if("object"==typeof b&&!g(b))return this.nodes[a]=b instanceof c?b:new c(b),this;throw new Error("Should give an Assert, an Asserts array, a Constraint",b)},has:function(a,b){return b="undefined"!=typeof b?b:this.nodes,"undefined"!=typeof b[a]},get:function(a,b){return this.has(a)?this.nodes[a]:b||null},remove:function(a){var b=[];for(var c in this.nodes)c!==a&&(b[c]=this.nodes[c]);return this.nodes=b,this},_bootstrap:function(a){if(a instanceof c)return this.nodes=a.nodes;for(var b in a)this.add(b,a[b])},_check:function(a,b,d){if(this.nodes[a]instanceof e)return this._checkAsserts(b,[this.nodes[a]],d);if(g(this.nodes[a]))return this._checkAsserts(b,this.nodes[a],d);if(this.nodes[a]instanceof c)return this.nodes[a].check(b,d);throw new Error("Invalid node",this.nodes[a])},_checkAsserts:function(a,b,c){for(var d,e=[],f=0;f<b.length;f++)d=b[f].check(a,c),"undefined"!=typeof d&&!0!==d&&e.push(d);return e}};var d=function(a,b,c){if(this.__class__="Violation",!(a instanceof e))throw new Error("Should give an assertion implementing the Assert interface");this.assert=a,this.value=b,"undefined"!=typeof c&&(this.violation=c)};d.prototype={show:function(){var a={assert:this.assert.__class__,value:this.value};return this.violation&&(a.violation=this.violation),a},__toString:function(){return"undefined"!=typeof this.violation&&(this.violation='", '+this.getViolation().constraint+" expected was "+this.getViolation().expected),this.assert.__class__+' assert failed for "'+this.value+this.violation||""},getViolation:function(){var a,b;for(a in this.violation)b=this.violation[a];return{constraint:a,expected:b}}};var e=function(a){this.__class__="Assert",this.__parentClass__=this.__class__,this.groups=[],"undefined"!=typeof a&&this.addGroup(a)};e.prototype={construct:e,requiresValidation:function(a){return a&&!this.hasGroup(a)?!1:!a&&this.hasGroups()?!1:!0},check:function(a,b){if(this.requiresValidation(b))try{return this.validate(a,b)}catch(c){return c}},hasGroup:function(a){return g(a)?this.hasOneOf(a):"Any"===a?!0:this.hasGroups()?-1!==this.groups.indexOf(a):"Default"===a},hasOneOf:function(a){for(var b=0;b<a.length;b++)if(this.hasGroup(a[b]))return!0;return!1},hasGroups:function(){return this.groups.length>0},addGroup:function(a){return g(a)?this.addGroups(a):(this.hasGroup(a)||this.groups.push(a),this)},removeGroup:function(a){for(var b=[],c=0;c<this.groups.length;c++)a!==this.groups[c]&&b.push(this.groups[c]);return this.groups=b,this},addGroups:function(a){for(var b=0;b<a.length;b++)this.addGroup(a[b]);return this},HaveProperty:function(a){return this.__class__="HaveProperty",this.node=a,this.validate=function(a){if("undefined"==typeof a[this.node])throw new d(this,a,{value:this.node});return!0},this},Blank:function(){return this.__class__="Blank",this.validate=function(a){if("string"!=typeof a)throw new d(this,a,{value:b.errorCode.must_be_a_string});if(""!==a.replace(/^\s+/g,"").replace(/\s+$/g,""))throw new d(this,a);return!0},this},Callback:function(a){if(this.__class__="Callback",this.arguments=Array.prototype.slice.call(arguments),1===this.arguments.length?this.arguments=[]:this.arguments.splice(0,1),"function"!=typeof a)throw new Error("Callback must be instanciated with a function");return this.fn=a,this.validate=function(a){var b=this.fn.apply(this,[a].concat(this.arguments));if(!0!==b)throw new d(this,a,{result:b});return!0},this},Choice:function(a){if(this.__class__="Choice",!g(a)&&"function"!=typeof a)throw new Error("Choice must be instanciated with an array or a function");return this.list=a,this.validate=function(a){for(var b="function"==typeof this.list?this.list():this.list,c=0;c<b.length;c++)if(a===b[c])return!0;throw new d(this,a,{choices:b})},this},Collection:function(a){return this.__class__="Collection",this.constraint="undefined"!=typeof a?a instanceof e?a:new c(a):!1,this.validate=function(a,c){var e,h=new b,i=0,j={},k=this.groups.length?this.groups:c;if(!g(a))throw new d(this,a,{value:b.errorCode.must_be_an_array});for(var l=0;l<a.length;l++)e=this.constraint?h.validate(a[l],this.constraint,k):h.validate(a[l],k),f(e)||(j[i]=e),i++;return f(j)?!0:j},this},Count:function(a){return this.__class__="Count",this.count=a,this.validate=function(a){if(!g(a))throw new d(this,a,{value:b.errorCode.must_be_an_array});var c="function"==typeof this.count?this.count(a):this.count;if(isNaN(Number(c)))throw new Error("Count must be a valid interger",c);if(c!==a.length)throw new d(this,a,{count:c});return!0},this},Email:function(){return this.__class__="Email",this.validate=function(a){var c=/^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))$/i;if("string"!=typeof a)throw new d(this,a,{value:b.errorCode.must_be_a_string});if(!c.test(a))throw new d(this,a);return!0},this},EqualTo:function(a){if(this.__class__="EqualTo","undefined"==typeof a)throw new Error("EqualTo must be instanciated with a value or a function");return this.reference=a,this.validate=function(a){var b="function"==typeof this.reference?this.reference(a):this.reference;if(b!==a)throw new d(this,a,{value:b});return!0},this},GreaterThan:function(a){if(this.__class__="GreaterThan","undefined"==typeof a)throw new Error("Should give a threshold value");return this.threshold=a,this.validate=function(a){if(""===a||isNaN(Number(a)))throw new d(this,a,{value:b.errorCode.must_be_a_number});if(this.threshold>=a)throw new d(this,a,{threshold:this.threshold});return!0},this},GreaterThanOrEqual:function(a){if(this.__class__="GreaterThanOrEqual","undefined"==typeof a)throw new Error("Should give a threshold value");return this.threshold=a,this.validate=function(a){if(""===a||isNaN(Number(a)))throw new d(this,a,{value:b.errorCode.must_be_a_number});if(this.threshold>a)throw new d(this,a,{threshold:this.threshold});return!0},this},InstanceOf:function(a){if(this.__class__="InstanceOf","undefined"==typeof a)throw new Error("InstanceOf must be instanciated with a value");return this.classRef=a,this.validate=function(a){if(!0!=a instanceof this.classRef)throw new d(this,a,{classRef:this.classRef});return!0},this},Key:function(a){if(this.__class__="Key","object"!=typeof a)throw new Error("Must pass object to Key Assertion");return this.obj=a,this.validate=function(b){if(!0!==a.hasOwnProperty(b))throw new d(this,b,{obj:this.obj});return!0},this},Length:function(a){if(this.__class__="Length",!a.min&&!a.max)throw new Error("Lenth assert must be instanciated with a { min: x, max: y } object");return this.min=a.min,this.max=a.max,this.validate=function(a){if("string"!=typeof a&&!g(a))throw new d(this,a,{value:b.errorCode.must_be_a_string_or_array});if("undefined"!=typeof this.min&&this.min===this.max&&a.length!==this.min)throw new d(this,a,{min:this.min,max:this.max});if("undefined"!=typeof this.max&&a.length>this.max)throw new d(this,a,{max:this.max});if("undefined"!=typeof this.min&&a.length<this.min)throw new d(this,a,{min:this.min});return!0},this},LessThan:function(a){if(this.__class__="LessThan","undefined"==typeof a)throw new Error("Should give a threshold value");return this.threshold=a,this.validate=function(a){if(""===a||isNaN(Number(a)))throw new d(this,a,{value:b.errorCode.must_be_a_number});if(this.threshold<=a)throw new d(this,a,{threshold:this.threshold});return!0},this},LessThanOrEqual:function(a){if(this.__class__="LessThanOrEqual","undefined"==typeof a)throw new Error("Should give a threshold value");return this.threshold=a,this.validate=function(a){if(""===a||isNaN(Number(a)))throw new d(this,a,{value:b.errorCode.must_be_a_number});if(this.threshold<a)throw new d(this,a,{threshold:this.threshold});return!0},this},NotNull:function(){return this.__class__="NotNull",this.validate=function(a){if(null===a||"undefined"==typeof a)throw new d(this,a);return!0},this},NotBlank:function(){return this.__class__="NotBlank",this.validate=function(a){if("string"!=typeof a)throw new d(this,a,{value:b.errorCode.must_be_a_string});if(""===a.replace(/^\s+/g,"").replace(/\s+$/g,""))throw new d(this,a);return!0},this},Null:function(){return this.__class__="Null",this.validate=function(a){if(null!==a)throw new d(this,a);return!0},this},Range:function(a,b){if(this.__class__="Range","undefined"==typeof a||"undefined"==typeof b)throw new Error("Range assert expects min and max values");return this.min=a,this.max=b,this.validate=function(a){try{return"string"==typeof a&&isNaN(Number(a))||g(a)?(new e).Length({min:this.min,max:this.max}).validate(a):(new e).GreaterThanOrEqual(this.min).validate(a)&&(new e).LessThanOrEqual(this.max).validate(a),!0}catch(b){throw new d(this,a,b.violation)}return!0},this},Regexp:function(a,c){if(this.__class__="Regexp","undefined"==typeof a)throw new Error("You must give a regexp");return this.regexp=a,this.flag=c||"",this.validate=function(a){if("string"!=typeof a)throw new d(this,a,{value:b.errorCode.must_be_a_string});if(!new RegExp(this.regexp,this.flag).test(a))throw new d(this,a,{regexp:this.regexp,flag:this.flag});return!0},this},Required:function(){return this.__class__="Required",this.validate=function(a){if("undefined"==typeof a)throw new d(this,a);try{"string"==typeof a?(new e).NotNull().validate(a)&&(new e).NotBlank().validate(a):!0===g(a)&&(new e).Length({min:1}).validate(a)}catch(b){throw new d(this,a)}return!0},this},Unique:function(a){return this.__class__="Unique","object"==typeof a&&(this.key=a.key),this.validate=function(a){var c,e=[];if(!g(a))throw new d(this,a,{value:b.errorCode.must_be_an_array});for(var f=0;f<a.length;f++)if(c="object"==typeof a[f]?a[f][this.key]:a[f],"undefined"!=typeof c){if(-1!==e.indexOf(c))throw new d(this,a,{value:c});e.push(c)}return!0},this}},a.Assert=e,a.Validator=b,a.Violation=d,a.Constraint=c,Array.prototype.indexOf||(Array.prototype.indexOf=function(a){"use strict";if(null===this)throw new TypeError;var b=Object(this),c=b.length>>>0;if(0===c)return-1;var d=0;if(arguments.length>1&&(d=Number(arguments[1]),d!=d?d=0:0!==d&&1/0!=d&&d!=-1/0&&(d=(d>0||-1)*Math.floor(Math.abs(d)))),d>=c)return-1;for(var e=d>=0?d:Math.max(c-Math.abs(d),0);c>e;e++)if(e in b&&b[e]===a)return e;return-1});var f=function(a){for(var b in a)return!1;return!0},g=function(a){return"[object Array]"===Object.prototype.toString.call(a)};"function"==typeof define&&define.amd?define(function(){return a}):"undefined"!=typeof module&&module.exports?module.exports=a:window["undefined"!=typeof validatorjs_ns?validatorjs_ns:"Validator"]=a}();
\ No newline at end of file
diff --git a/src/validator.js b/src/validator.js
index f3076de..9281cbf 100644
--- a/src/validator.js
+++ b/src/validator.js
@@ -628,6 +628,24 @@
       return this;
     },
 
+    Key: function ( obj ) {
+      this.__class__ = 'Key';
+
+      if ( 'object' !== typeof obj )
+        throw new Error( 'Must pass object to Key Assertion' );
+
+      this.obj = obj;
+      
+      this.validate = function ( value ) {
+        if ( true !== ( obj.hasOwnProperty( value ) ) )
+          throw new Violation( this, value, { obj: this.obj } );
+
+        return true;
+      };
+
+      return this;
+    },
+
     Length: function ( boundaries ) {
       this.__class__ = 'Length';
 
diff --git a/tests/tests.js b/tests/tests.js
index b3d6ade..d0a0b9d 100644
--- a/tests/tests.js
+++ b/tests/tests.js
@@ -494,6 +494,14 @@ var Suite = function ( Validator, expect, extras ) {
         expect( validate( 7, assert ).show() ).to.eql( { assert: 'LessThanOrEqual', value: 7, violation: { threshold: 5 } } );
       } )
 
+      it( 'Key', function () {
+        assert = new Assert().Key( { info: null, test: null } );
+
+        expect( validate( 'info', assert ) ).to.be( true );
+        expect( validate( 'test', assert ) ).to.be( true );
+        expect( validate( 'key', assert ).show() ).to.eql( { assert: 'Key', value: 'key', violation: { obj: { info: null, test: null } } } );
+      } )
+
       if ( !extras )
         return;