In my project, I am using a LOCAL_STORAGE module from 'angular-webstorage-service'. Its working fine as functionality, But I am getting an error while doing testing. I am using Kharma and Jasmine I am not getting where I did wrong, Please let me know if anyone comes across this. Failed: StaticInjectorError(DynamicTestModule)[AppComponent -> InjectionToken LOCAL_STORAGE]: StaticInjectorError(Platform: core)[AppComponent -> InjectionToken LOCAL_STORAGE]: NullInjectorError: No provider for InjectionToken LOCAL_STORAGE! app.module.ts import { BrowserModule } from '@angular/platform-browser'; import { NgModule, NO_ERRORS_SCHEMA } from '@angular/core'; import { StorageServiceModule} from 'angular-webstorage-service'; //import * as $ from 'jquery'; import * as bootstrap from "bootstrap"; import { AppComponent } from './app.component'; @NgModule({ declarations: [ AppComponent ], imports: [ BrowserModule, StorageServiceModule ], schemas: [ NO_ERRORS_SCHEMA], providers: [], bootstrap: [AppComponent] }) export class AppModule { } app.component.ts import { Component, OnInit, HostListener, Inject } from '@angular/core'; import {LOCAL_STORAGE, WebStorageService, StorageServiceModule} from 'angular-webstorage-service'; @Component({ selector: 'app-root', templateUrl: './app.component.html' }) export class AppComponent implements OnInit { constructor(@Inject(LOCAL_STORAGE) private storage: WebStorageService) { } } karma.conf.js // Karma configuration file, see link for more information // https://karma-runner.github.io/1.0/config/configuration-file.html module.exports = function (config) { config.set({ basePath: '', frameworks: ['jasmine', '@angular-devkit/build-angular'], plugins: [ require('karma-jasmine'), require('karma-chrome-launcher'), require('karma-jasmine-html-reporter'), require('karma-coverage-istanbul-reporter'), require('@angular-devkit/build-angular/plugins/karma') ], files: [ { pattern: '../node_modules/jquery/dist/jquery.min.js', watched: false } ], client: { clearContext: false // leave Jasmine Spec Runner output visible in browser }, coverageIstanbulReporter: { dir: require('path').join(__dirname, '../coverage'), reports: ['html', 'lcovonly'], fixWebpackSourcePaths: true }, reporters: ['progress', 'kjhtml'], port: 9876, colors: true, logLevel: config.LOG_INFO, autoWatch: true, browsers: ['Chrome'], singleRun: false }); }; Continue reading...