test: AuthController에 대한 E2E 테스트 추가

nestjs-BE/server/test/auth.e2e-spec.ts

@@ -0,0 +1,67 @@
+import { HttpStatus, INestApplication } from '@nestjs/common';
+import { Test, TestingModule } from '@nestjs/testing';
+import { AuthModule } from '../src/auth/auth.module';
+import * as request from 'supertest';
+import { ConfigModule } from '@nestjs/config';
+
+describe('AuthController (e2e)', () => {
+  let app: INestApplication;
+  let fetchSpy: jest.SpyInstance;
+
+  beforeAll(() => {
+    fetchSpy = jest.spyOn(global, 'fetch');
+  });
+
+  beforeEach(async () => {
+    const moduleFixture: TestingModule = await Test.createTestingModule({
+      imports: [AuthModule, ConfigModule.forRoot({ isGlobal: true })],
+    }).compile();
+
+    app = moduleFixture.createNestApplication();
+
+    await app.init();
+  });
+
+  afterEach(async () => {
+    fetchSpy.mockRestore();
+
+    await app.close();
+  });
+
+  it('/auth/kakao-oauth (POST)', () => {
+    fetchSpy.mockResolvedValue({
+      json: async () => {
+        return { kakao_account: { email: '[email protected]' } };
+      },
+      ok: true,
+    });
+
+    return request(app.getHttpServer())
+      .post('/auth/kakao-oauth')
+      .send({ kakaoUserId: 1 })
+      .expect(HttpStatus.CREATED)
+      .expect((res) => {
+        expect(res.body.statusCode).toBe(HttpStatus.OK);
+        expect(res.body.message).toBe('Success');
+        expect(res.body.data.access_token).toMatch(
+          /^[A-Za-z0-9-_]+?\.[A-Za-z0-9-_]+?\.[A-Za-z0-9-_]+$/,
+        );
+        expect(res.body.data.refresh_token).toMatch(
+          /^[A-Za-z0-9-_]+?\.[A-Za-z0-9-_]+?\.[A-Za-z0-9-_]+$/,
+        );
+      });
+  });
+
+  it('/auth/kakao-oauth (POST) received wrong kakao user id', () => {
+    fetchSpy.mockResolvedValue({
+      json: async () => null,
+      ok: false,
+    });
+
+    return request(app.getHttpServer())
+      .post('/auth/kakao-oauth')
+      .send({ kakaoUserId: 1 })
+      .expect(HttpStatus.NOT_FOUND)
+      .expect({ statusCode: HttpStatus.NOT_FOUND, message: 'Not Found' });
+  });
+});