describe('Accumulating validation errors', () => {
  it('validates correct name', () => {
    const result = validateName('Alice')
    expect(result._tag).toBe('Right')
  })

  it('accumulates name errors', () => {
    const result = validateName('A')
    expect(result._tag).toBe('Left')
    if (result._tag === 'Left') {
      expect(result.left.length).toBeGreaterThan(0)
    }
  })

  it('validates correct password', () => {
    const result = validatePassword('SecurePass123')
    expect(result._tag).toBe('Right')
  })

  it('accumulates password errors', () => {
    const result = validatePassword('weak')
    expect(result._tag).toBe('Left')
    if (result._tag === 'Left') {
      expect(result.left.length).toBeGreaterThan(1) // Multiple errors
    }
  })
})