// Shared across all tests in file
let userCount = 0
let database: User[] = []

test('creates first user', () => {
  const user = createUser({ name: 'Alice' })
  database.push(user)
  userCount++

  expect(database).toHaveLength(1)
  expect(userCount).toBe(1)
})

test('creates second user', () => {
  const user = createUser({ name: 'Bob' })
  database.push(user)
  userCount++

  // Fails if tests run in different order or parallel
  expect(database).toHaveLength(2)
  expect(userCount).toBe(2)
})

describe('createUser', () => {
  let database: User[]

  beforeEach(() => {
    // Fresh state for each test
    database = []
  })

  test('creates first user', () => {
    const user = createUser({ name: 'Alice' })
    database.push(user)

    expect(database).toHaveLength(1)
  })

  test('creates second user', () => {
    const user = createUser({ name: 'Bob' })
    database.push(user)

    // Always passes regardless of test order
    expect(database).toHaveLength(1)
  })
})