SHIBUI-996 Fixed issue with filter validation

ui/src/app/metadata/filter/model/entity-attributes.filter.spec.ts

@@ -1,8 +1,37 @@
 import { EntityAttributesFilter } from './entity-attributes.filter';
 
 describe('Entity Attributes filter form', () => {
-    it('should return an empty object for validators', () => {
-        expect(EntityAttributesFilter.getValidators()).toEqual({});
+    describe('getValidators', () => {
+        it('should return an empty object for validators', () => {
+            expect(Object.keys(EntityAttributesFilter.getValidators())).toEqual([
+                '/',
+                '/name'
+            ]);
+        });
+
+        describe('name `/name` validator', () => {
+            const validators = EntityAttributesFilter.getValidators(['foo', 'bar']);
+
+            it('should return an invalid object when provided values are invalid based on name', () => {
+                expect(validators['/name']('foo', { path: '/name' })).toBeDefined();
+            });
+
+            it('should return null when provided values are valid based on name', () => {
+                expect(validators['/name']('baz', { path: '/name' })).toBeNull();
+            });
+        });
+
+        describe('parent `/` validator', () => {
+            const validators = EntityAttributesFilter.getValidators(['foo', 'bar']);
+
+            it('should return a list of child errors', () => {
+                expect(validators['/']({ name: 'foo' }, { path: '/name' }, {}).length).toBe(1);
+            });
+
+            it('should ignore properties that don\'t exist a list of child errors', () => {
+                expect(validators['/']({ foo: 'bar' }, { path: '/foo' }, {})).toBeUndefined();
+            });
+        });
     });
 
     describe('transformer', () => {