ci: 타입 검사, 테스트 및 커버리지 추가 (#35)

* test: 타입 검사 추가

* ci: 자동 포매팅

참고: https://autofix.ci

* test: `lint:ci` 옵션

CI에서 eslint 오류 검사를 위해 `--fix`를 제거합니다.

* ci: 테스트 추가

테스트를 실행하고 커버리지 결과를 codecov에 업로드합니다.

참고: https://about.codecov.io

* ci: --frozen-lockfile 추가

.github/workflows/autofix.yml

@@ -0,0 +1,42 @@
+name: autofix.ci # needed to securely identify the workflow
+
+on:
+  pull_request:
+  push:
+    branches: ["main"]
+
+defaults:
+  run:
+    working-directory: backend
+
+permissions:
+  contents: read
+
+jobs:
+  autofix:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: pnpm 설치
+        uses: pnpm/action-setup@v4
+        with:
+          version: 9
+          package_json_file: "backend/package.json"
+
+      - name: Node.js 22 설치
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: "pnpm"
+          cache-dependency-path: backend/pnpm-lock.yaml
+
+      - name: 의존성 설치
+        run: pnpm install --frozen-lockfile
+
+      - name: 포매팅
+        run: |
+          pnpm format
+          pnpm lint
+
+      - uses: autofix-ci/action@dd55f44df8f7cdb7a6bf74c78677eb8acd40cd0a

.github/workflows/ci.yml

@@ -0,0 +1,46 @@
+name: CI
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+defaults:
+  run:
+    working-directory: backend
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [20, 22]
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: pnpm 설치
+        uses: pnpm/action-setup@v4
+        with:
+          version: 9
+          package_json_file: "backend/package.json"
+
+      - name: Node.js ${{ matrix.node-version }} 설치
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: "pnpm"
+          cache-dependency-path: backend/pnpm-lock.yaml
+
+      - name: 의존성 설치
+        run: pnpm install --frozen-lockfile
+
+      - name: 테스트
+        run: |
+          pnpm lint:ci
+          pnpm typecheck
+          pnpm test:cov
+
+      - name: Codecov에 커버리지 결과 배포
+        uses: codecov/codecov-action@v4
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}

backend/package.json

@@ -13,11 +13,13 @@
     "start:debug": "nest start --debug --watch",
     "start:prod": "node dist/main",
     "lint": "eslint \"{src,apps,libs,test}/**/*.ts\" --fix",
+    "lint:ci": "eslint \"{src,apps,libs,test}/**/*.ts\"",
     "test": "jest",
     "test:watch": "jest --watch",
     "test:cov": "jest --coverage",
     "test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/.bin/jest --runInBand",
-    "test:e2e": "jest --config ./test/jest-e2e.json"
+    "test:e2e": "jest --config ./test/jest-e2e.json",
+    "typecheck": "tsc --noEmit"
   },
   "dependencies": {
     "@nestjs/common": "^10.0.0",