How to feed values in constructor in testcase in NestJs(jest)? - node.js

Question

I am using NestJs framework in my project. Here i want to write testcase for a service file. But i am facing an issue in feeding the value of this.userPool in the service file.I am getting userPoolId and clientId undefined error.
I tried different solutions, but nothing works for me.
service.js
export class AuthService {
private userPool: CognitoUserPool;
constructor(private readonly authConfig: AuthConfig) {
this.userPool = new CognitoUserPool({
UserPoolId: this.authConfig.userPoolId,
ClientId: this.authConfig.clientId,
});
}
authenticateUser(user: AuthCredentialsDto) {
try {
const { userName, password } = user;
const authenticateDetails = new AuthenticationDetails({
Username: userName,
Password: password,
});
const userData = {
Username: userName,
Pool: this.userPool,
};
const newUser = new CognitoUser(userData);
return new Promise((resolve, reject) => {
------------------------
--------------------------------
});
} catch (error) {
throw new BadRequestException(error.message);
}
}
service.spec.ts
import { AuthService } from './auth.service';
import {
AuthenticationDetails,
CognitoUser,
CognitoUserAttribute,
CognitoUserPool,
} from 'amazon-cognito-identity-js';
import { AuthConfig } from './cognito.service';
// const mockCognitoUserPool = () => ({
// registerUser: jest.fn(),
// });
describe('AuthService', () => {
let service: AuthService;
let authConfig: AuthConfig;
let userPool: CognitoUserPool;
userPool = new CognitoUserPool({
UserPoolId: authConfig.userPoolId,
ClientId: authConfig.clientId,
});
// let userPool;
beforeEach(async () => {
const module: TestingModule = await Test.createTestingModule({
providers: [
AuthService,
AuthConfig,
userPool
],
}).compile();
service = module.get<AuthService>(AuthService);
authConfig = module.get<AuthConfig>(AuthConfig);
// cognitoUserPool = module.get<CognitoUserPool>(CognitoUserPool);
});
describe('authenticateUser', () => {
it('calls registerUser and returns the result', async () => {
const mockUser = {
userName: 'usernme',
password: 'password',
};
// tasksRepository.findOne.mockResolvedValue(mockTask);
const result = await service.authenticateUser(mockUser);
expect(result).toEqual('result');
});
});
// it('should be defined', () => {
// expect(service).toBeDefined();
// });
});

Answer 1

Did you mean to spell your username property ‘usernme’ in the test file?