import { describe, it, expect } from 'vitest'
import { formatRatio } from '@/utils/format'

describe('formatRatio', () => {
  it('把 0~1 的比率格式化为一位小数的百分比', () => {
    expect(formatRatio(0.8)).toBe('80.0%')
    expect(formatRatio(0.8571)).toBe('85.7%')
    expect(formatRatio(1)).toBe('100.0%')
    expect(formatRatio(0)).toBe('0.0%')
  })

  it('兼容后端返回字符串形式的比率', () => {
    expect(formatRatio('0.8')).toBe('80.0%')
  })

  it('空值与非法值统一显示 "-"', () => {
    expect(formatRatio()).toBe('-')
    expect(formatRatio(null)).toBe('-')
    expect(formatRatio('')).toBe('-')
    expect(formatRatio('abc')).toBe('-')
  })
})