Import tests: backend/tests/integration/health

Import the existing local project snapshot. This commit organizes existing files; it does not represent newly developed functionality.

backend/tests/integration/health.test.ts

@@ -0,0 +1,29 @@
+import { describe, it, expect, beforeAll, afterAll } from 'vitest';
+import { buildApp } from '../../src/app.js';
+
+describe('Fastify server integration', () => {
+  let app: ReturnType<typeof buildApp>;
+
+  beforeAll(async () => {
+    app = buildApp();
+    await app.ready();
+  });
+
+  afterAll(async () => {
+    await app.close();
+  });
+
+  it('should return a basic health/status payload', async () => {
+    const response = await app.inject({
+      method: 'GET',
+      url: '/health',
+    });
+
+    expect(response.statusCode).toBe(200);
+    const body = JSON.parse(response.body);
+    expect(body).toEqual({
+      status: 'ok',
+      database: 'connected',
+    });
+  });
+});