feat(examples): add nestjs test

Author: Fabian Wiles

examples/BUILD.bazel

@@ -133,11 +133,12 @@ example_integration_test(
 example_integration_test(
     name = "examples_nestjs",
     bazel_commands = [
-        "build ...",
+        "test ...",
         # Test cross-platform build
         "build --platforms=@build_bazel_rules_nodejs//toolchains/node:linux_amd64 //src:docker",
     ],
     npm_packages = {
+        "//packages/jasmine:npm_package": "@bazel/jasmine",
         "//packages/typescript:npm_package": "@bazel/typescript",
     },
     owners = [

examples/nestjs/package.json

@@ -1,19 +1,25 @@
 {
   "private": true,
   "dependencies": {
+    "@bazel/bazel": "^2.0.0",
+    "@bazel/ibazel": "^0.11.0",
+    "@bazel/jasmine": "^1.0.0",
     "@nestjs/common": "6.5.2",
     "@nestjs/core": "6.5.2",
     "@nestjs/platform-express": "6.5.2",
+    "@types/jasmine": "^3.5.0",
+    "@types/supertest": "^2.0.8",
     "minimist": "1.2.0",
     "reflect-metadata": "0.1.13",
-    "rxjs": "6.5.2"
+    "rxjs": "6.5.2",
+    "supertest": "^4.0.2"
   },
   "devDependencies": {
     "@bazel/typescript": "^1.0.1",
     "@types/node": "12.6.3",
     "typescript": "3.5.3"
   },
   "scripts": {
-    "test": "bazel build ... && bazel build --platforms=@build_bazel_rules_nodejs//toolchains/node:linux_amd64 //src:docker"
+    "test": "bazel test ... && bazel build --platforms=@build_bazel_rules_nodejs//toolchains/node:linux_amd64 //src:docker"
   }
 }

examples/nestjs/src/BUILD.bazel

@@ -14,20 +14,37 @@
 
 package(default_visibility = ["//visibility:public"])
 
+load("@build_bazel_rules_nodejs//:index.bzl", "nodejs_binary")
+load("@npm_bazel_jasmine//:index.bzl", "jasmine_node_test")
 load("@npm_bazel_typescript//:index.bzl", "ts_library")
 
 ts_library(
     name = "app",
-    srcs = glob(["*.ts"]),
+    srcs = glob(
+        ["*.ts"],
+        exclude = ["*.spec.ts"],
+    ),
     deps = [
         "@npm//@nestjs/common",
         "@npm//@nestjs/core",
+        "@npm//@nestjs/platform-express",
         "@npm//@types/node",
         "@npm//tslib",
     ],
 )
 
-load("@build_bazel_rules_nodejs//:index.bzl", "nodejs_binary")
+ts_library(
+    name = "test_lib",
+    srcs = glob(["*.spec.ts"]),
+    deps = [
+        ":app",
+        "@npm//@nestjs/common",
+        "@npm//@types/jasmine",
+        "@npm//@types/supertest",
+        "@npm//jasmine",
+        "@npm//supertest",
+    ],
+)
 
 # bazel run //src:server -- --port=4000
 # TODO(gregmagolan): add test for nest server with protractor rule once it is brought in
@@ -37,12 +54,18 @@ nodejs_binary(
         ":app",
         "@npm//@nestjs/common",
         "@npm//@nestjs/core",
-        "@npm//@nestjs/platform-express",
         "@npm//minimist",
     ],
     entry_point = ":main.ts",
 )
 
+jasmine_node_test(
+    name = "test",
+    deps = [
+        ":test_lib",
+    ],
+)
+
 load("@io_bazel_rules_docker//nodejs:image.bzl", "nodejs_image")
 
 # bazel build --platforms=@build_bazel_rules_nodejs//toolchains/node:linux_amd64 //src:docker

examples/nestjs/src/app.controller.ts

@@ -2,8 +2,8 @@ import {Controller, Get} from '@nestjs/common';
 
 @Controller()
 export class AppController {
-  @Get()
-  getGreeting(): string {
-    return 'Hello world!';
+  @Get('hello')
+  getGreeting(): {message: string} {
+    return {message: 'Hello world!'};
   }
 }

examples/nestjs/src/main.spec.ts

@@ -0,0 +1,21 @@
+import {INestApplication} from '@nestjs/common';
+import * as request from 'supertest';
+
+import {bootstrap} from './main';
+
+describe('App', () => {
+  let server: INestApplication;
+
+  beforeAll(async () => {
+    server = await bootstrap(3000);
+  });
+  afterAll(async () => {
+    await server.close();
+  })
+
+  it(`GET /`, () => {
+    return request(server.getHttpServer()).get('/hello').expect(200).expect({
+      message: 'Hello world!'
+    });
+  });
+});

examples/nestjs/src/main.ts

@@ -1,12 +1,14 @@
-import {Logger} from '@nestjs/common';
+import {INestApplication, Logger} from '@nestjs/common';
 import {NestFactory} from '@nestjs/core';
+import {ExpressAdapter} from '@nestjs/platform-express';
 
 import {AppModule} from './app.module';
 
-async function bootstrap(port: number) {
-  const app = await NestFactory.create(AppModule);
+export async function bootstrap(port: number): Promise<INestApplication> {
+  const app = await NestFactory.create(AppModule, new ExpressAdapter());
   await app.listen(port);
   Logger.log(`Application served at http://localhost:${port}`);
+  return app;
 }
 
 if (require.main === module) {