format functions should return true if value type does not match spec…

…ified types

schemaFactory.js

@@ -158,7 +158,7 @@ var max = MAX_SAFE_INTEGER / 100;
 var min = -MAX_SAFE_INTEGER / 100;
 function currencyFormatCheck(value) {
 	if (typeof value !== 'number') {
-		return false;
+		return true;
 	} else if ((value.toString().split('.')[1] || '').length > 2) {
 		return false;
 	} else if (value > max || value < min) {
@@ -169,7 +169,7 @@ function currencyFormatCheck(value) {
 
 function rateFormat(value) {
 	if (typeof value !== 'number') {
-		return false;
+		return true;
 	} else if ((value.toString().split('.')[1] || '').length > 2) {
 		return false;
 	} else if (value > 100 || value < 0) {
@@ -180,7 +180,7 @@ function rateFormat(value) {
 
 function rateNegativeFormat(value) {
 	if (typeof value !== 'number') {
-		return false;
+		return true;
 	} else if ((value.toString().split('.')[1] || '').length > 2) {
 		return false;
 	} else if (value > 0 || value < -100) {
@@ -191,7 +191,7 @@ function rateNegativeFormat(value) {
 
 function currencyRateFormat(value) {
 	if (typeof value !== 'number') {
-		return false;
+		return true;
 	} else if ((value.toString().split('.')[1] || '').length > 6) {
 		return false;
 	} else if (value > 999999999 || value < 0.000001) {

test/exampleSchemas/index.js

@@ -279,11 +279,11 @@ module.exports = {
 
 	currencySchema:{
 		"description":'Simple object',
-		"required":true,
+		"required":false,
 		"type":'object',
 		"properties": {
 			"a": {
-				"type": 'number',
+				"type": ['null', 'number'],
 				"required": false,
 				"format": 'currency'
 			}

test/integration/schemaFactory.spec.js

@@ -310,7 +310,7 @@ describe('/source/util/schemaFactory run on simpleSchema, the returned object',
 			});
 		});
 
-		describe('not required field', function () {
+		describe('invalid format', function () {
 			var result;
 
 			var document = {
@@ -325,6 +325,36 @@ describe('/source/util/schemaFactory run on simpleSchema, the returned object',
 				expect(result).to.have.property('valid', false);
 			});
 		});
+
+		describe('not required field', function () {
+			var result;
+
+			var document = {};
+
+			before(function () {
+				result = schema.validate(document);
+			});
+
+			it('should validate with errors', function () {
+				expect(result).to.have.property('valid', true);
+			});
+		});
+
+		describe('allow null', function () {
+			var result;
+
+			var document = {
+				a: null
+			};
+
+			before(function () {
+				result = schema.validate(document);
+			});
+
+			it('should validate with errors', function () {
+				expect(result).to.have.property('valid', true);
+			});
+		});
 	});
 
 	describe('validate with filter', function () {