Unit testing Angular Application using Jasmine - Util Service spec

uv-util.service.spec.ts

import { TestBed } from '@angular/core/testing';
import * as globalmocks from '../globalmocks';
import { UvUtilService } from './uv-util.service';

describe('UvUtilService', () => {
  let service: UvUtilService;

  beforeEach(() => {
    TestBed.configureTestingModule({});
    service = TestBed.inject(UvUtilService);
  });

  it('should be created', () => {
    expect(service).toBeTruthy();
  });

  it('areArraysEqual should check Arrays are Equal or not', () => {
    let arr1: any;
    let arr2: any;

    arr1 = ['Yuvraj'];
    arr2 = ['Jon'];
    expect(service.areArraysEqual(arr1, arr2)).toBeFalsy();

    arr1 = ['Yuvraj'];
    arr2 = ['Yuvraj'];
    expect(service.areArraysEqual(arr1, arr2)).toBeTruthy();

    arr1 = [{
      name: 'Yuvraj'
    }];
    arr2 = [{
      name: 'Jon'
    }];
    expect(service.areArraysEqual(arr1, arr2)).toBeFalsy();

    arr1 = [{
      name: 'Jon'
    }];
    arr2 = [{
      name: 'Jon'
    }];
    expect(service.areArraysEqual(arr1, arr2)).toBeTruthy();
  });
});