Integrating Fake Service into AngularJS with Jasmine Testing

Currently, I am using jasmine to test my controllers that are written in TypeScript. Interestingly, my unit tests are in plain javascript. I encountered an error while testing my controller, specifically when attempting to inject a mock service.

Below is a snippet of how my test appears:

'use strict';

describe('ConfigCtrl', function(){
    var scope, http, location, timeout, $httpBackend, service;

    beforeEach(angular.mock.module('busybee'));

    beforeEach(angular.mock.inject(function($rootScope, $http, $location, $timeout, configService, $controller){

        scope = $rootScope.$new();
        http = $http;
        location = $location;
        timeout = $timeout;
        service = configService;


        $controller('configCtrl', {$scope: scope, $http: http, $location: location, $timeout: timeout, configService: service});
    }));

    it('should have text = "constructor"', function(){
        expect(true).toBe(true);
    });
});

In my app.ts file:

module game {
    'use strict';

    var busybee = angular.module('busybee', []);
    busybee.controller('configCtrl', ConfigCtrl);

    busybee.service('configService', ConfigService);
    ...
    ...

}

As for my TypeScript controller:

module game {
    'use strict';

    export class ConfigCtrl {

        static $inject: string[] = ['$scope', '$http', '$location', '$timeout', 'configService'];

        constructor($scope: ng.IScope, $http: ng.IHttpService, $location: ng.ILocationService,
            $timeout: ng.ITimeoutService, configService: game.ConfigService) {  
            //any code here
        }
    }   
}

While running karma, an error occurs as follows:

Chrome 28.0.1500 (Linux) ConfigCtrl should have text = "constructor" FAILED
        TypeError: Cannot read property 'prototype' of undefined
            at Object.instantiate (/home/david/git/busybee2-client/js/libs/angular/angular.min.js:28:283)
            at Object.<anonymous> (/home/david/git/busybee2-client/js/libs/angular/angular.min.js:28:494)
            at Object.d [as invoke] (/home/david/git/busybee2-client/js/libs/angular/angular.min.js:28:174)
            at /home/david/git/busybee2-client/js/libs/angular/angular.min.js:29:339
            at c (/home/david/git/busybee2-client/js/libs/angular/angular.min.js:27:13)
            at Object.d [as invoke] (/home/david/git/busybee2-client/js/libs/angular/angular.min.js:27:147)
            at workFn (/home/david/git/busybee2-client/js/libs/angular/angular-mocks.js:1778:20)
        Error: Declaration Location
            at Object.window.jasmine.window.inject.angular.mock.inject [as inject] (/home/david/git/busybee2-client/js/libs/angular/angular-mocks.js:1764:25)
            at null.<anonymous> (/home/david/git/busybee2-client/js/test/ConfigCtrlSpecs.js:9:29)
            at /home/david/git/busybee2-client/js/test/ConfigCtrlSpecs.js:3:1
Chrome 28.0.1500 (Linux): Executed 1 of 1 (1 FAILED) ERROR (0.329 secs / 0.032 secs)

It seems the issue lies in injecting the configService, but the root cause remains unidentified.

EDIT: attached a jsfiddle link for better understanding http://jsfiddle.net/Q552U/6/

UPDATE: Resolved the problem by consolidating the compiled JavaScript from TypeScript classes into a single .js file (tsc --out dest.js source.ts).

angularjstypescriptjasmine

Answer №1

Use the $injector method to fetch the service.

beforeEach(angular.mock.inject(function($rootScope, $http, $location, $timeout, configService, $controller, $injector){
    scope = $rootScope.$new();
    http = $http;
    location = $location;
    timeout = $timeout;
    service = $injector.get('configService'); //You can also try 'ConfigService'.

    $controller('configCtrl', {$scope: scope, $http: http, $location: location, $timeout: timeout, configService: service});
}));

Access the Demo here.

Answer №2

Great response by zsong, however, the code can be further improved by eliminating configService from angular.mock.inject() since it is not required.

Another option would be to write your test in TypeScript (and utilize Jasmine type definitions), which offers a more organized approach. In this scenario, your test would appear as follows:

/// <reference path="typings/jasmine/jasmine.d.ts" />

describe('ConfigCtrl', () => {
    var configCtrl, scope, http, location, timeout, configServiceFake;

    beforeEach(angular.mock.module('busybee'));

    beforeEach(angular.mock.inject(($rootScope, $http, $location, $timeout, configService) => {
        scope = $rootScope.$new();
        http = $http;
        location = $location;
        timeout = $timeout;
        configServiceFake = configService;

        configCtrl = new game.ConfigCtrl(scope, http, location, timeout, configServiceFake);
    }));

    it('should have text = "constructor"', () => {
        expect(true).toBe(true);
    });
});

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Using Vue3 with TypeScript for props with multiple types

For a challenge, I am currently attempting to characterize the implementation of FontAwesome Vue in TypeScript. The icon prop in this implementation can have various types: icon: { type: [Object, Array, String], required: true }, I tried to incorp ...

typescriptvue.jsvuejs3vue-composition-api

The request to upload an image to Cloudinary using AngularJS is being blocked due to the origin http://localhost.com:8000 not being allowed by Access-Control-Allow-Origin

I've been attempting to upload images to Cloudinary through my Angular controller without using any libraries. The POST requests are unsigned, and interestingly, I was successful when I tested it with jQuery on a static HTML page. Here is the code sn ...

javascriptangularjscorscloudinary

What causes TypeScript to interpret an API call as a module and impact CSS? Encountering a Next.js compilation error

My website development process hit a roadblock when I tried integrating Material Tailwind into my project alongside Next.js, Typescript, and Tailwind CSS. The compilation error that popped up seemed unrelated to the changes, leaving me baffled as to what c ...

csstypescriptnext.jscompiler-errorstailwind-css

Implementing multiple URL parameters in AngularJS using ui-router

After receiving the URL from the payment gateway, this is the format: #/app/booking/details?id=25&success=true&paymentId=123&token=xx2311&PayerID=QSWAA My route configuration currently looks like this: .state('app.booking.details&ap ...

javascriptangularjslaravellaravel-5angular-ui-router

Tips for incorporating YouTube or Vimeo videos into your AngularJs application using iframes

Recently, I have started using angularjs and I am interested in displaying YouTube or Vimeo videos in an iframe based on the video URL input by users. Can anyone guide me on how to achieve this functionality when a user inserts a video URL and then clicks ...

angularjsiframeyoutubevimeo

Struggling to get the 'Hello World' message to function properly in Angular JS

Currently, I am following a PluralSight tutorial on AngularJS Fundamentals. The code provided by the instructor and mine are almost identical: <!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title> ...

angularjs

How to implement SVG in React with the image source as a parameter?

I've been working on a React component in NextJS that displays an image inside a hexagon. The issue I'm facing is that when I try to use multiple instances of this component with different images in the HexagonWall, all hexagons end up displaying ...

reactjstypescriptsvgnext.jsjsx

What could be the issue causing this indexed signature to fail?

I'm attempting to extract an object's values and use them as keys for the interface. Here is my approach: const obj = { a: 'foo', b: 'bar', } as const; type A<T extends object, K extends keyof T = keyof T> = { ...

typescript

Testing NextJS App Router API routes with Jest: A comprehensive guide

Looking to test a basic API route: File ./src/app/api/name import { NextResponse } from 'next/server'; export async function GET() { const name = process.env.NAME; return NextResponse.json({ name, }); } Attempting to test ...

reactjstypescriptnext.jsjestjsts-jest

AngularJS JSON data computation

As I delve into learning angularjs (not 2), one of the challenges I face is calculating the total amount for a customer order. The data I'm working with is structured as follows: var clients = [ { id: 1, jo ...

javascriptangularjsjson

Observable is encountering an issue where the API service is becoming undefined

Here is a glimpse into my Angular 6 Ionic 4 app - the app.component.js file. I have set up an observable to call the API service every 2 minutes to check for new notifications. The first call goes through smoothly, but then I encounter an error stating can ...

angulartypescriptionic-frameworkionic3ionic4

AngularJS $resource causing the creation of a new object instead of updating the existing one

// Defining the $resource for user data $scope.Users = $resource("http://localhost/users/:id"); // Retrieving user with id=1 $scope.user = $scope.Users.get({ id : 1 }); // returns user with ID 1 // User object details {"created_at":"2013-03-03T06:32:30Z" ...

restangularjs

Determining the data type of an object key in Typescript

Is there a way to limit the indexed access type to only return the type of the key specified? interface User { id: string, name: string, age: number, token: string | null, } interface Updates<Schema> { set: Partial<Record< ...

typescripttypes

The ion-nav-buttons controller is triggering twice

Seeking a solution for displaying badges based on need inside the ion-nav-buttons. However, facing an issue where the controller inside the ion-nav-buttons is triggered twice. Interestingly, placing it outside the ion-nav-buttons resolves this problem. Fo ...

javascriptangularjsionic-frameworkcontroller

Unveiling the secret to accessing the table itself from dtOptions in AngularJS-Datatables

I'm trying to create a download button for a CSV file, but I need to exclude specific columns from the table. I have discovered an option called "exportOptions" that is used in jQuery DataTables to define which columns should be exported. It seems th ...

angularjsangular-datatables

7 Tips for Renaming Variables in VSCode without Using the Alias `oldName as newName` StrategyWould you like to

When working in VSCode, there is a feature that allows you to modify variables called editor.action.rename, typically activated by pressing F2. However, when dealing with Typescript and Javascript, renaming an imported variable creates aliases. For exampl ...

javascripttypescriptvisual-studio-coderefactoring

``Error encountered when attempting to navigate AngularJS route with trailing forward slash

I have a link that is working perfectly fine, like this: when('/videos', { templateUrl: 'partials/partial1', controller: 'MyCtrl1' }). But when I add a named group to the route like this: when('/videos/:video_id&ap ...

angularjs

Is using $timeout still considered the most efficient method for waiting on an Angular directive template to load?

When it comes to waiting for a directive's template to render, our team has been following the approach of enclosing our DOM manipulation code in a $timeout within the directive's link function. This method was commonly used in the past, but I&ap ...

javascriptangularjstypescriptdirective

Angular Directive Fails to Execute Within ng-repeat Loop

In my current configuration, I have: App/Directive var app = angular.module("MyApp", []); app.directive("adminRosterItem", function () { return { restrict: "E", scope: { displayText: "@" }, template: "< ...

javascriptangularjsangularjs-directiveangularjs-ng-repeat

Tips for implementing date filtering in Angular2

I am facing an issue in my class where I need to implement date filtering, similar to Angular 1: $filter('date')(startDate, 'yyyy-MM-dd HH:mm:ss') For Angular 2, it seems like the DatePipe class can be used for this purpose. However, ...

angularjsangulardate-format