feat: add testing capabilities for Firebase functions (#454)

* feat: add testing capabilities for Firebase functions

- Updated package.json to include vitest and supertest for testing.
- Created a GitHub Actions workflow for running tests on push and pull request events.
- Added a sample test for the helloWorld function to verify it returns a 200 status code and the expected response.

* feat: add Firebase Functions testing workflow with Node.js support

Author: mafreud

.github/workflows/firebase-functions-tests.yml

@@ -0,0 +1,39 @@
+name: Firebase Functions Tests
+
+on:
+  push:
+    branches: [main, develop]
+    paths:
+      - "openci-runner/firebase/functions/**"
+      - ".github/workflows/firebase-functions-tests.yml"
+  pull_request:
+    branches: [main, develop]
+    paths:
+      - "openci-runner/firebase/functions/**"
+      - ".github/workflows/firebase-functions-tests.yml"
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    strategy:
+      matrix:
+        node-version: [20, 22]
+    defaults:
+      run:
+        working-directory: openci-runner/firebase/functions
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run tests
+        run: npm test

.github/workflows/github-apps-tests.yml

@@ -3,12 +3,23 @@ name: GitHub Apps Tests
 on:
   push:
     branches: [main, develop]
+    paths:
+      - "openci-runner/github-apps/**"
+      - ".github/workflows/github-apps-tests.yml"
   pull_request:
     branches: [main, develop]
+    paths:
+      - "openci-runner/github-apps/**"
+      - ".github/workflows/github-apps-tests.yml"
 
 jobs:
   test:
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    strategy:
+      matrix:
+        node-version: [20, 22]
     defaults:
       run:
         working-directory: openci-runner/github-apps
@@ -19,7 +30,7 @@ jobs:
       - name: Set up Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: "22"
+          node-version: ${{ matrix.node-version }}
 
       - name: Install dependencies
         run: npm ci