nishabe

import { Test, TestingModule } from '@nestjs/testing';
import { ApiService } from './api.service';
import { HttpModule } from '@nestjs/common';

describe('ApiService', () => {
  let service: ApiService;

  beforeEach(async () => {
    const module: TestingModule = await Test.createTestingModule({
      providers: [ApiService],

nishabe

import { Test, TestingModule } from '@nestjs/testing';
import * as request from 'supertest';
import { AppModule } from '../app.module';
import { INestApplication, HttpService, HttpModule } from '@nestjs/common';
import { ApiService } from '../api/api.service';
import { StudentService } from '../student/student.service';
import { AxiosResponse } from 'axios';
import { of } from 'rxjs';

describe('AppController (e2e)', () => {

nishabe

"jest": {
    "moduleFileExtensions": [
      "js",
      "json",
      "ts"
    ],
    "rootDir": "src",
    "testRegex": ".spec.ts$",
    "transform": {
      "^.+\\.(t|j)s$": "ts-jest"

nishabe

import { Test, TestingModule } from '@nestjs/testing';
import { AppController } from './app.controller';
import { AppService } from './app.service';
import { StudentService } from './student/student.service';

describe('AppController', () => {
  let appController: AppController;
  let spyService: StudentService;

  beforeEach(async () => {

nishabe

import { Test, TestingModule } from '@nestjs/testing';
import { StudentService } from './student.service';
import { ApiService } from '../api/api.service';

class ApiServiceMock {
  // eslint-disable-next-line @typescript-eslint/no-unused-vars
  getStudent(_firstName: string, _lastName: string) {
    return {
      name: 'Jane Doe',
      grades: [3.7, 3.8, 3.9, 4.0, 3.6],

nishabe

import { HttpService, Injectable } from '@nestjs/common';
import { Student } from '../student/student.service';

@Injectable()
export class ApiService {
  constructor(private http: HttpService) {}
  async getStudent(firstName: string, lastName: string): Promise<Student> {
    const url = `../get-student?firstName=${firstName}&lastName=${lastName}`;
    const response = await this.http.get(url).toPromise();
    return response.data;

nishabe

import { HttpException, Injectable } from '@nestjs/common';
import { ApiService } from '../api/api.service';

export interface Student {
  name: string;
  grades: number[];
}

@Injectable()
export class StudentService {

nishabe

import { Controller, Get, HttpException, Query } from '@nestjs/common';
import { AppService } from './app.service';
import { StudentService } from './student/student.service';

@Controller('student')
export class AppController {
  constructor(
    private readonly appService: AppService,
    private readonly studentService: StudentService,
  ) {}

nishabe

service:
 name: nest-serverless-lambda-demo

plugins:
 - 'serverless-plugin-typescript'
 - serverless-plugin-optimize
 - serverless-offline

provider:
 name: aws

nishabe

// lambda.ts
import { Handler, Context } from 'aws-lambda';
import { Server } from 'http';
import { createServer, proxy } from 'aws-serverless-express';
import { eventContext } from 'aws-serverless-express/middleware';

import { NestFactory } from '@nestjs/core';
import { ExpressAdapter } from '@nestjs/platform-express';
import { AppModule } from './app.module';