api-connector.service.ts
import { Injectable } from '@angular/core';
import { HttpClient, HttpParams } from '@angular/common/http';
import { ErrorObservable } from 'rxjs/observable/ErrorObservable';
import { Observable } from 'rxjs/Observable';
{environment} from '../../../environments/environment';
import { catchError } from 'rxjs/operators/catchError';
@Injectable()
export class ApiConnectorService {
constructor(private http: HttpClient) { }
private getQueryString(params): string {
const queryString = Object.keys(params).map(key => key + '=' + params[key]).join('&');
console.log('QUERY STRING', queryString);
return ('?' + queryString);
}
private formatErrors(error: any) {
return new ErrorObservable(error.error);
}
get(path: string, payload: Object = {}): Observable<any> {
return this.http.get(`${environment.base_url}${path}` + this.getQueryString(payload))
.pipe(catchError(this.formatErrors));
}
put(path: string, body: Object = {}): Observable<any> {
return this.http.put(
`${environment.base_url}${path}`,
body
).pipe(catchError(this.formatErrors));
}
post(path: string, body: Object): Observable<any> {
// console.log('API SERVICE BODY', body)
return this.http.post(
`${environment.base_url}${path}`,
body
).pipe(catchError(this.formatErrors));
}
delete(path): Observable<any> {
return this.http.delete(
`${environment.base_url}${path}`
).pipe(catchError(this.formatErrors));
}
}login.contract.ts
export interface LoginRequest {
env?: string;
userid: string;
password: string;
newpassword: string;
}
export interface LoginResponse {
token: string;
}I am just starting out with Angular and learning about Karma/Jasmine as well.
I've developed a basic login component and service. While attempting to write test cases, I referred to documentation and the angular.io website. I managed to write some test cases for the login component following the docs, but struggled with writing test cases for the login service.
How can I go about writing test cases for the login service?
Shown below is my login.service.ts file
import { Injectable } from '@angular/core';
import { ApiConnectorService } from '../api-handlers/api-connector.service';
import { LoginRequest, LoginResponse } from './login.contract';
import { Observable } from 'rxjs/Observable';
import { map } from 'rxjs/operators';
@Injectable()
export class LoginService {
constructor(private apiConnector: ApiConnectorService) { }
login(payload: LoginRequest): Observable<LoginResponse> {
console.log('Login payload ', payload);
return this.apiConnector.post('/api/login', payload)
.pipe(
map((data: LoginResponse) => data)
)
}
}