test(core): add common-utils.spec.ts

npm/ng-packs/packages/core/src/lib/tests/common-utils.spec.ts

@@ -0,0 +1,10 @@
+import { noop } from '../utils';
+
+describe('CommonUtils', () => {
+  describe('#noop', () => {
+    test('should return empty fn', () => {
+      expect(typeof noop()).toBe('function');
+      expect(noop()()).toBeUndefined();
+    });
+  });
+});