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🎞 ANIMATE · Mode 3 of 5 · +100 XP— Integration Testing
📋Setup/Teardown
⚙️HTTP Request
🔄Response Assert
✅State
🎯 Next: Test →
Step 1 / 4
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Setup/Teardown
beforeAll/afterAll manage real database lifecycle💡 Analogy
Like setting up a real kitchen for a cooking test — not a model kitchen, actual stoves and pans.
beforeAll creates the app and runs migrations against a test database. afterAll tears down connections. Integration tests use real infrastructure.
Console Output
> Running migrations on test DB
> Connected to postgresql://localhost/test_db
> Test suite ready
●user-api.test.ts
Setup/TeardownL7–14
1import { describe, it, expect, beforeAll, afterAll } from 'vitest';
2import request from 'supertest';
3import { createApp } from './app';
4import { db } from './db';
5 
6describe('POST /api/users', () => {
7  let app: ReturnType<typeof createApp>;
8 
9  beforeAll(async () => {
10    app = createApp();
11    await db.migrate.latest(); // real DB, test schema
12  });
13 
14  afterAll(async () => {
15    await db.destroy();
16  });
17 
18  it('creates user and returns 201', async () => {
19    const res = await request(app)
20      .post('/api/users')
21      .send({ name: 'Alice', email: 'alice@test.com', password: 'secret123' });
22 
23    expect(res.status).toBe(201);
24    expect(res.body.id).toBeDefined();
25    expect(res.body.email).toBe('alice@test.com');
26    expect(res.body.password).toBeUndefined(); // never in response
27  });
28 
29  it('returns 409 for duplicate email', async () => {
30    await request(app).post('/api/users')
31      .send({ name: 'Bob', email: 'dup@test.com', password: 'pass12345' });
32 
33    const res = await request(app).post('/api/users')
34      .send({ name: 'Bob2', email: 'dup@test.com', password: 'pass12345' });
35 
36    expect(res.status).toBe(409);
37    expect(res.body.error).toMatch(/already exists/i);
38  });
39});
39 lines
Timeline — 4 Steps
Setup/Teardown
beforeAll/afterAll manage real database lifecycle💡 Analogy
Like setting up a real kitchen for a cooking test — not a model kitchen, actual stoves and pans.
beforeAll creates the app and runs migrations against a test database. afterAll tears down connections. Integration tests use real infrastructure.
Console Output
> Running migrations on test DB
> Connected to postgresql://localhost/test_db
> Test suite ready

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Discussion

beforeAll/afterAll manage real database lifecycle

💡 Analogy

Like setting up a real kitchen for a cooking test — not a model kitchen, actual stoves and pans.

beforeAll creates the app and runs migrations against a test database. afterAll tears down connections. Integration tests use real infrastructure.

Console Output

> Running migrations on test DB
> Connected to postgresql://localhost/test_db
> Test suite ready

beforeAll/afterAll manage real database lifecycle

💡 Analogy

Like setting up a real kitchen for a cooking test — not a model kitchen, actual stoves and pans.

beforeAll creates the app and runs migrations against a test database. afterAll tears down connections. Integration tests use real infrastructure.

Console Output

> Running migrations on test DB
> Connected to postgresql://localhost/test_db
> Test suite ready