import { describe, it, expect } from 'vitest'
import { mount } from '@vue/test-utils'
import PasswordStrength from '../PasswordStrength.vue'

describe('PasswordStrength', () => {
  it('renders nothing for empty password', () => {
    const wrapper = mount(PasswordStrength, { props: { password: '' } })
    expect(wrapper.find('[data-testid="strength-bar"]').exists()).toBe(false)
  })

  it('score 1 for weak password (only letters, < 8)', () => {
    const wrapper = mount(PasswordStrength, { props: { password: 'abc' } })
    expect(wrapper.find('[data-testid="strength-bar"]').attributes('data-score')).toBe('1')
    expect(wrapper.text()).toContain('弱')
  })

  it('score 1 for only digits', () => {
    const wrapper = mount(PasswordStrength, { props: { password: '1234567' } })
    expect(wrapper.find('[data-testid="strength-bar"]').attributes('data-score')).toBe('1')
  })

  it('score 2 for letters+digits >= 8 chars', () => {
    const wrapper = mount(PasswordStrength, { props: { password: 'abc12345' } })
    expect(wrapper.find('[data-testid="strength-bar"]').attributes('data-score')).toBe('2')
    expect(wrapper.text()).toContain('中')
  })

  it('score 2 for uppercase letters+digits >= 8 chars', () => {
    const wrapper = mount(PasswordStrength, { props: { password: 'ABC12345' } })
    expect(wrapper.find('[data-testid="strength-bar"]').attributes('data-score')).toBe('2')
    expect(wrapper.text()).toContain('中')
  })

  it('score 3 for upper+lower+digits >= 10 chars', () => {
    const wrapper = mount(PasswordStrength, { props: { password: 'Abcdef1234' } })
    expect(wrapper.find('[data-testid="strength-bar"]').attributes('data-score')).toBe('3')
    expect(wrapper.text()).toContain('强')
  })

  it('score 4 for upper+lower+digits+special >= 12 chars', () => {
    const wrapper = mount(PasswordStrength, { props: { password: 'Abcdef1234!@' } })
    expect(wrapper.find('[data-testid="strength-bar"]').attributes('data-score')).toBe('4')
    expect(wrapper.text()).toContain('很强')
  })
})