thereef/src/app/http.interceptor.spec.ts
import { TestBed } from '@angular/core/testing';import { HttpInterceptorFn } from '@angular/common/http'; import { httpInterceptor } from './http.interceptor'; describe('httpInterceptor', () => { const interceptor: HttpInterceptorFn = (req, next) => TestBed.runInInjectionContext(() => httpInterceptor(req, next)); beforeEach(() => { TestBed.configureTestingModule({}); }); it('should be created', () => { expect(interceptor).toBeTruthy(); });});