feat: 테스트에서 가용한 포트를 직접 찾도록 구현

- portfinder 라이브러리 추가
- 가용한 포트를 찾아 listen하고, 환경변수로 지정하는 listenAppAndSetPortEnv 메서드 추가
- 테스트에서 사용할 포트를 환경변수로 받도록 변경

Author: choyoungwoo9

backend/package-lock.json

@@ -55,6 +55,7 @@
     "eslint-config-prettier": "^9.0.0",
     "eslint-plugin-prettier": "^5.0.0",
     "jest": "^29.5.0",
+    "portfinder": "^1.0.32",
     "prettier": "^3.0.0",
     "socket.io-client": "^4.7.5",
     "source-map-support": "^0.5.21",

backend/package.json

@@ -5,6 +5,7 @@ import {
   createMember,
   createProject,
   getProjectLinkId,
+  listenAppAndSetPortEnv,
   memberFixture,
   memberFixture2,
   projectPayload,
@@ -14,7 +15,7 @@ describe('Join Project', () => {
   beforeEach(async () => {
     await app.close();
     await appInit();
-    await app.listen(3000);
+    await listenAppAndSetPortEnv(app);
   });
 
   it('should return 201', async () => {

backend/test/project/join-project.e2e-spec.ts

@@ -1,7 +1,7 @@
 import { LexoRank } from 'lexorank';
 import { resolve } from 'path';
 import { Socket } from 'socket.io-client';
-import { app, appInit } from 'test/setup';
+import { app, appInit, listenAppAndSetPortEnv } from 'test/setup';
 import {
   getMemberJoinedLandingPage,
   getTwoMemberJoinedLandingPage,
@@ -11,7 +11,7 @@ describe('WS epic', () => {
   beforeEach(async () => {
     await app.close();
     await appInit();
-    await app.listen(3000);
+	await listenAppAndSetPortEnv(app);
   });
 
   describe('epic create', () => {

backend/test/project/ws-backlog-page/ws-epic.e2e-spec.ts

@@ -1,13 +1,13 @@
 import { LexoRank } from 'lexorank';
 import { Socket } from 'socket.io-client';
-import { app, appInit } from 'test/setup';
+import { app, appInit, listenAppAndSetPortEnv } from 'test/setup';
 import { getTwoMemberJoinedLandingPage } from '../ws-common';
 
 describe('WS epic', () => {
   beforeEach(async () => {
     await app.close();
     await appInit();
-    await app.listen(3000);
+    await listenAppAndSetPortEnv(app);
   });
 
   describe('backlog init', () => {

backend/test/project/ws-backlog-page/ws-init-backlog.e2e-spec.ts

@@ -1,6 +1,6 @@
 import { LexoRank } from 'lexorank';
 import { Socket } from 'socket.io-client';
-import { app, appInit } from 'test/setup';
+import { app, appInit, listenAppAndSetPortEnv } from 'test/setup';
 import {
   getMemberJoinedLandingPage,
   getTwoMemberJoinedLandingPage,
@@ -10,7 +10,7 @@ describe('WS story', () => {
   beforeEach(async () => {
     await app.close();
     await appInit();
-    await app.listen(3000);
+	await listenAppAndSetPortEnv(app);
   });
 
   describe('story create', () => {

backend/test/project/ws-backlog-page/ws-story.e2e-spec.ts

@@ -1,6 +1,6 @@
 import { LexoRank } from 'lexorank';
 import { Socket } from 'socket.io-client';
-import { app, appInit } from 'test/setup';
+import { app, appInit, listenAppAndSetPortEnv } from 'test/setup';
 import {
   getMemberJoinedLandingPage,
   getTwoMemberJoinedLandingPage,
@@ -10,7 +10,7 @@ describe('WS task', () => {
   beforeEach(async () => {
     await app.close();
     await appInit();
-    await app.listen(3000);
+    await listenAppAndSetPortEnv(app);
   });
 
   describe('task create', () => {

backend/test/project/ws-backlog-page/ws-task.e2e-spec.ts

@@ -5,20 +5,22 @@ import {
   createMember,
   createProject,
   githubApiService,
+  listenAppAndSetPortEnv,
   memberFixture,
   memberFixture2,
   projectPayload,
 } from 'test/setup';
 import { io } from 'socket.io-client';
 
 describe('WS landing', () => {
-  const serverUrl = 'http://localhost:3000/project';
+  let serverUrl;
   let socket;
 
   beforeEach(async () => {
     await app.close();
     await appInit();
-    await app.listen(3000);
+    await listenAppAndSetPortEnv(app);
+    serverUrl = `http://localhost:${process.env.PORT}/project`;
   });
 
   afterEach(async () => {

backend/test/project/ws-landing-page/ws-connection.e2e-spec.ts

@@ -9,6 +9,7 @@ import {
   getProjectLinkId,
   memberFixture2,
   joinProject,
+  listenAppAndSetPortEnv,
 } from 'test/setup';
 import {
   emitJoinLanding,
@@ -23,7 +24,7 @@ describe('WS join project', () => {
   beforeEach(async () => {
     await app.close();
     await appInit();
-    await app.listen(3000);
+    await listenAppAndSetPortEnv(app);
   });
 
   it('should return joined member', async () => {

backend/test/project/ws-landing-page/ws-join-project.e2e-spec.ts

@@ -6,6 +6,7 @@ import {
   createProject,
   getProjectLinkId,
   joinProject,
+  listenAppAndSetPortEnv,
   memberFixture,
   memberFixture2,
   projectPayload,
@@ -23,7 +24,7 @@ describe('WS link', () => {
   beforeEach(async () => {
     await app.close();
     await appInit();
-    await app.listen(3000);
+    await listenAppAndSetPortEnv(app);
   });
   describe('link create', () => {
     it('should return created link data when received create link request', async () => {