add type doc

src/app/services/cache-service.service.spec.ts

@@ -1,16 +0,0 @@
-import { TestBed } from '@angular/core/testing';
-
-import { CacheServiceService } from './cache-service.service';
-
-describe('CacheServiceService', () => {
-  let service: CacheServiceService;
-
-  beforeEach(() => {
-    TestBed.configureTestingModule({});
-    service = TestBed.inject(CacheServiceService);
-  });
-
-  it('should be created', () => {
-    expect(service).toBeTruthy();
-  });
-});

src/app/services/directives/input-filter.directive.spec.ts

@@ -1,8 +0,0 @@
-import { InputFilterDirective } from './input-filter.directive';
-
-describe('InputFilterDirective', () => {
-  it('should create an instance', () => {
-    const directive = new InputFilterDirective();
-    expect(directive).toBeTruthy();
-  });
-});

src/app/services/directives/visibility.directive.spec.ts

@@ -1,8 +0,0 @@
-import { VisibilityDirective } from './visibility.directive';
-
-describe('VisibilityDirective', () => {
-  it('should create an instance', () => {
-    const directive = new VisibilityDirective();
-    expect(directive).toBeTruthy();
-  });
-});

src/app/services/directives/visibility1.directive.spec.ts

@@ -1,8 +0,0 @@
-import { VisibilityDirective } from './visibility.directive';
-
-describe('VisibilityDirective', () => {
-  it('should create an instance', () => {
-    const directive = new VisibilityDirective();
-    expect(directive).toBeTruthy();
-  });
-});