fix(renderer): update the required validator to properly handle falsy…

… numeric values

packages/react-form-renderer/src/tests/validators/validators.test.js

@@ -10,10 +10,34 @@ describe('New validators', () => {
       expect(validatorMapper[validatorTypes.REQUIRED]()('Foo')).toBeUndefined();
     });
 
+    it('should pass required validator if numeric truthy value', () => {
+      expect(validatorMapper[validatorTypes.REQUIRED]()(1)).toBeUndefined();
+    });
+
+    it('should pass required validator if numeric falsy value', () => {
+      expect(validatorMapper[validatorTypes.REQUIRED]()(0)).toBeUndefined();
+    });
+
+    it('should pass required validator if boolean true', () => {
+      expect(validatorMapper[validatorTypes.REQUIRED]()(true)).toBeUndefined();
+    });
+
+    it('should pass required validator if boolean false', () => {
+      expect(validatorMapper[validatorTypes.REQUIRED]()(false)).toBeUndefined();
+    });
+
     it('should fail required validator', () => {
       expect(validatorMapper[validatorTypes.REQUIRED]()()).toBe('Required');
     });
 
+    it('should fail required validator if explictly null', () => {
+      expect(validatorMapper[validatorTypes.REQUIRED]()(null)).toBe('Required');
+    });
+
+    it('should fail required validator if explictly undefined', () => {
+      expect(validatorMapper[validatorTypes.REQUIRED]()(undefined)).toBe('Required');
+    });
+
     it('should fail required validator if string of white spaces', () => {
       expect(validatorMapper[validatorTypes.REQUIRED]()('  ')).toBe('Required');
     });

packages/react-form-renderer/src/validators/validator-functions.js

@@ -2,8 +2,17 @@ import { memoize, prepare, prepareMsg, selectNum, isNumber, trunc } from '../com
 
 export const required = memoize(({ message } = {}) => {
   return prepare((value) => {
-    const cond = typeof value === 'string' ? !value.trim() : value && !isNaN(value.length) ? !value.length : !value;
-    if (cond) {
+    let failsValidation = true;
+
+    if (typeof value === 'string') {
+      failsValidation = !value.trim();
+    } else if (Array.isArray(value)) {
+      failsValidation = !value.length;
+    } else {
+      failsValidation = value === null || value === undefined;
+    }
+
+    if (failsValidation) {
       return prepareMsg(message, 'required').defaultMessage;
     }
   });