diff --git a/client/core/src/directives/specs/validation.spec.js b/client/core/src/directives/specs/validation.spec.js
index 1b39a862c..5a819aced 100644
--- a/client/core/src/directives/specs/validation.spec.js
+++ b/client/core/src/directives/specs/validation.spec.js
@@ -26,7 +26,7 @@ describe('Directive validation', () => {
         }).toThrow(new Error(`vnValidation: Attribute must have this syntax: [entity].[field]`));
     });
 
-    it('should throw an error if the window.validations are not defined', () => {
+    it('should throw an error if the window.validations aint defined', () => {
         let html = `<input type="name" ng-model="user.name" vn-validation="user.name"/>`;
 
         expect(() => {
@@ -34,15 +34,12 @@ describe('Directive validation', () => {
         }).toThrow(new Error(`vnValidation: Entity 'User' doesn't exist`));
     });
 
-    describe('Validator Presence()', () => {
+    describe('Validator presence()', () => {
         it('should not validate the user name as it is an empty string', () => {
             let html = `<form><input type="name" ng-model="user.name" vn-validation="user.name"/></form>`;
             let validations = {User: {validations: {name: [{validation: 'presence'}]}}};
             compile(html, validations, 'Spiderman');
             scope.user.name = '';
-
-            expect(element[0].classList).toContain('ng-valid');
-            expect(element[0].classList).not.toContain('ng-invalid');
             scope.$digest();
 
             expect(element[0].classList).toContain('ng-invalid');
@@ -50,25 +47,134 @@ describe('Directive validation', () => {
         });
     });
 
-    it(`should not validate the name as it's format is incorrect`, () => {
-        let html = `<form><input type="name" ng-model="user.name" vn-validation="user.name"/></form>`;
-        let validations = {User: {validations: {name: [{validation: 'presence'}]}}};
-        compile(html, validations, 'spiderman');
-        scope.user.name = '';
-        scope.$digest();
+    describe('Validator absence()', () => {
+        it('should not validate the entity as it should be an empty string', () => {
+            let html = `<form><input type="name" ng-model="user.name" vn-validation="user.name"/></form>`;
+            let validations = {User: {validations: {name: [{validation: 'absence'}]}}};
+            compile(html, validations, 'Spiderman');
+            scope.$digest();
 
-        expect(element[0].classList).toContain('ng-invalid');
-        expect(element[0].classList).not.toContain('ng-valid');
+            expect(element[0].classList).toContain('ng-invalid');
+            expect(element[0].classList).not.toContain('ng-valid');
+        });
+
+        it('should validate the entity as it is an empty string', () => {
+            let html = `<form><input type="name" ng-model="user.name" vn-validation="user.name"/></form>`;
+            let validations = {User: {validations: {name: [{validation: 'absence'}]}}};
+            compile(html, validations, '');
+            scope.$digest();
+
+            expect(element[0].classList).toContain('ng-valid');
+            expect(element[0].classList).not.toContain('ng-invalid');
+        });
     });
 
-    it(`should validate the email as it's format is correct`, () => {
-        let html = `<form><input type="email" ng-model="user.email" vn-validation="user.email"/></form>`;
-        let validations = {User: {validations: {email: [{validation: 'presence'}]}}};
-        compile(html, validations, 'user@verdnatura.es');
-        scope.user.email = 'user@verdnatura.es';
-        scope.$digest();
+    describe('Validator length()', () => {
+        it('should not validate the user name as it should have min length of 15', () => {
+            let html = `<form><input type="name" ng-model="user.name" vn-validation="user.name"/></form>`;
+            let validations = {User: {validations: {name: [{validation: 'length', min: 10, max: 50, is: 15}]}}};
+            compile(html, validations, 'fifteen!');
+            scope.$digest();
 
-        expect(element[0].classList).toContain('ng-valid');
-        expect(element[0].classList).not.toContain('ng-invalid');
+            expect(element[0].classList).toContain('ng-invalid');
+            expect(element[0].classList).not.toContain('ng-valid');
+        });
+
+        it('should validate the user name as it has length of 15', () => {
+            let html = `<form><input type="name" ng-model="user.name" vn-validation="user.name"/></form>`;
+            let validations = {User: {validations: {name: [{validation: 'length', min: 10, max: 50, is: 15}]}}};
+            compile(html, validations, 'fifteen length!');
+            scope.$digest();
+
+            expect(element[0].classList).toContain('ng-valid');
+            expect(element[0].classList).not.toContain('ng-invalid');
+        });
+
+        it('should not validate the user name as it should have min length of 10', () => {
+            let html = `<form><input type="name" ng-model="user.name" vn-validation="user.name"/></form>`;
+            let validations = {User: {validations: {name: [{validation: 'length', min: 10}]}}};
+            compile(html, validations, 'shortname');
+            scope.$digest();
+
+            expect(element[0].classList).toContain('ng-invalid');
+            expect(element[0].classList).not.toContain('ng-valid');
+        });
+
+        it('should validate the user name as its length is greater then the minimum', () => {
+            let html = `<form><input type="name" ng-model="user.name" vn-validation="user.name"/></form>`;
+            let validations = {User: {validations: {name: [{validation: 'length', min: 10}]}}};
+            compile(html, validations, 'verylongname');
+            scope.$digest();
+
+            expect(element[0].classList).toContain('ng-valid');
+            expect(element[0].classList).not.toContain('ng-invalid');
+        });
+
+        it('should not validate the user name as its length is greater then the maximum', () => {
+            let html = `<form><input type="name" ng-model="user.name" vn-validation="user.name"/></form>`;
+            let validations = {User: {validations: {name: [{validation: 'length', max: 10}]}}};
+            compile(html, validations, 'toolongname');
+            scope.$digest();
+
+            expect(element[0].classList).toContain('ng-invalid');
+            expect(element[0].classList).not.toContain('ng-valid');
+        });
     });
+
+    describe('Validator numericality()', () => {
+        it('should not validate the phone number as it should a integer', () => {
+            let html = `<form><input type="text" ng-model="user.phone" vn-validation="user.phone"/></form>`;
+            let validations = {User: {validations: {phone: [{validation: 'numericality', is: 'what is this?'}]}}};
+            compile(html, validations, 'spiderman');
+            scope.user.phone = 'this is not a phone number!';
+            scope.$digest();
+
+            expect(element[0].classList).toContain('ng-invalid');
+            expect(element[0].classList).not.toContain('ng-valid');
+        });
+
+        it('should validate the phone number as it an integer', () => {
+            let html = `<form><input type="text" ng-model="user.phone" vn-validation="user.phone"/></form>`;
+            let validations = {User: {validations: {phone: [{validation: 'numericality', is: 'what is this?'}]}}};
+            compile(html, validations, 'spiderman');
+            scope.user.phone = '555555555';
+            scope.$digest();
+
+            expect(element[0].classList).toContain('ng-valid');
+            expect(element[0].classList).not.toContain('ng-invalid');
+        });
+    });
+
+    // it(`should not validate the name as it's format is incorrect`, () => {
+    //     let html = `<form><input type="name" ng-model="user.name" vn-validation="user.name"/></form>`;
+    //     let validations = {User: {validations: {name: [{validation: 'presence'}]}}};
+    //     compile(html, validations, 'spiderman');
+    //     scope.user.name = '';
+    //     scope.$digest();
+
+    //     expect(element[0].classList).toContain('ng-invalid');
+    //     expect(element[0].classList).not.toContain('ng-valid');
+    // });
+
+    // it(`should validate the email as it's format is correct`, () => {
+    //     let html = `<form><input type="email" ng-model="user.email" vn-validation="user.email"/></form>`;
+    //     let validations = {User: {validations: {email: [{validation: 'presence'}]}}};
+    //     compile(html, validations, 'spiderman');
+    //     scope.user.email = 'user@verdnatura.es';
+    //     scope.$digest();
+
+    //     expect(element[0].classList).toContain('ng-valid');
+    //     expect(element[0].classList).not.toContain('ng-invalid');
+    // });
+
+    // it(`should not validate the email as it's missing the @`, () => {
+    //     let html = `<form><input type="email" ng-model="user.email" vn-validation="user.email"/></form>`;
+    //     let validations = {User: {validations: {email: [{validation: 'presence'}]}}};
+    //     compile(html, validations, 'spiderman');
+    //     scope.user.email = 'userverdnatura.es';
+    //     scope.$digest();
+
+    //     expect(element[0].classList).toContain('ng-invalid');
+    //     expect(element[0].classList).not.toContain('ng-valid');
+    // });
 });
diff --git a/client/core/src/directives/validation.js b/client/core/src/directives/validation.js
index db34fe12b..10669e738 100644
--- a/client/core/src/directives/validation.js
+++ b/client/core/src/directives/validation.js
@@ -40,7 +40,7 @@ export function directive(interpolate, compile, $window) {
         let errorShown = false;
 
         input.$options.$$options.allowInvalid = true;
-        input.$validators.entity = function(value) {
+        input.$validators.entity = value => {
             try {
                 validateAll(value, validations);
                 return true;
diff --git a/client/core/src/lib/validator.js b/client/core/src/lib/validator.js
index d25776ab3..018d1b26e 100644
--- a/client/core/src/lib/validator.js
+++ b/client/core/src/lib/validator.js
@@ -9,11 +9,12 @@ export const validators = {
         if (!validator.isEmpty(value))
             throw new Error(`Value should be empty`);
     },
-    length: function(value, conf) {
+    length: (value, conf) => {
         let options = {
             min: conf.min || conf.is,
             max: conf.max || conf.is
         };
+
         if (!validator.isLength(value, options)) {
             if (conf.is) {
                 throw new Error(`Value should be ${conf.is} characters long`);
@@ -26,7 +27,7 @@ export const validators = {
             }
         }
     },
-    numericality: function(value, conf) {
+    numericality: (value, conf) => {
         if (conf.int) {
             if (!validator.isInt(value))
                 throw new Error(`Value should be integer`);