CODEWITHSUNDEEP
typescriptangularjasmine
stijn.aerts
stijn.aerts

Reputation: 6206

Cannot resolve all parameters for Response error in Jasmine test

I have this code in my test:

import {
  beforeEach, beforeEachProviders,
  describe, xdescribe,
  expect, it, xit,
  async, inject
} from '@angular/core/testing';
import { UserService } from './user.service';
import { Http, ConnectionBackend, Response, Headers, RequestOptions } from '@angular/http';
import { Observable }     from 'rxjs/Observable';
import { LocalStorage, SessionStorage, WEB_STORAGE_PROVIDERS } from 'h5webstorage';

beforeEachProviders(() => [
  UserService, Http, Response, Observable, ConnectionBackend, LocalStorage, Headers, RequestOptions
]);

describe('Service: UserService', () => {

  it('testtest', inject([UserService], (service) => {
    expect('test').toEqual('test');
  }));
});

When I run this I get the following error:

Error: Cannot resolve all parameters for 'Response'(?). Make sure that all the parameters are decorated with Inject or have valid type annotations and that 'Response' is decorated with Injectable.

Is this because of inproper dependency injection in the test? How can I do proper dependency injection in a Jasmine test?

Upvotes: 0

Views: 361

Answers (1)

Dinistro
Dinistro

Reputation: 5730

This should fix it for you:

import { provide } from '@angular/core';
import {
    beforeEach, 
    addProviders,
    inject
} from '@angular/core/testing';
import { UserService } from './user.service';

import {BaseRequestOptions, Http, Response, ResponseOptions, RequestMethod} from '@angular/http';

import {MockBackend} from '@angular/http/testing';

describe('Service: UserService', () => {
    beforeEach(() => addProviders([
        UserService,
            BaseRequestOptions,
            MockBackend,
            provide(Http, {
                useFactory: (backend: MockBackend, defaultOptions: BaseRequestOptions) => {
                    return new Http(backend, defaultOptions);
                },
                deps: [MockBackend, BaseRequestOptions]
            })
        ]));

    it('testtest', inject([UserService], (service) => {
        expect('test').toEqual('test');
    }));
});

You need to provide Http with a factory. Otherwise you will not be able to mock the responses.

Upvotes: 2

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