cfc/cfc-frontend/__tests__/utils/format.test.js

/**
 * Tests for cfc-frontend utils/format.js
 *
 * Tests the price/rate/score formatting utilities.
 * These are pure functions - no uni mock needed.
 */

describe('format.js', () => {
  let format

  beforeAll(() => {
    format = require('@/utils/format')
  })

  // --------------- formatPrice ---------------

  describe('formatPrice', () => {
    test('converts cents to yuan with 2 decimals', () => {
      expect(format.formatPrice(1250)).toBe('12.50')
      expect(format.formatPrice(0)).toBe('0.00')
      expect(format.formatPrice(999)).toBe('9.99')
      expect(format.formatPrice(10000)).toBe('100.00')
    })

    test('handles null and undefined', () => {
      expect(format.formatPrice(null)).toBeNull()
      expect(format.formatPrice(undefined)).toBeNull()
    })

    test('handles zero cents', () => {
      expect(format.formatPrice(0)).toBe('0.00')
    })
  })

  // --------------- formatPriceWithSymbol ---------------

  describe('formatPriceWithSymbol', () => {
    test('adds ¥ prefix and 2 decimals', () => {
      expect(format.formatPriceWithSymbol(1250)).toBe('¥12.50')
      expect(format.formatPriceWithSymbol(0)).toBe('¥0.00')
      expect(format.formatPriceWithSymbol(999)).toBe('¥9.99')
    })

    test('returns login message for null/undefined', () => {
      expect(format.formatPriceWithSymbol(null)).toBe('登录查看')
      expect(format.formatPriceWithSymbol(undefined)).toBe('登录查看')
    })
  })

  // --------------- formatRate ---------------

  describe('formatRate', () => {
    test('converts permillage to percentage string', () => {
      expect(format.formatRate(235)).toBe('23.5%')
      expect(format.formatRate(0)).toBe('0%')
      expect(format.formatRate(1000)).toBe('100%')
      expect(format.formatRate(5)).toBe('0.5%')
    })

    test('returns -- for null/undefined', () => {
      expect(format.formatRate(null)).toBe('--')
      expect(format.formatRate(undefined)).toBe('--')
    })
  })

  // --------------- formatScore ---------------

  describe('formatScore', () => {
    test('converts percent-scale to fixed decimal', () => {
      expect(format.formatScore(450)).toBe('4.5')
      expect(format.formatScore(0)).toBe('0.0')
      expect(format.formatScore(1000)).toBe('10.0')
    })

    test('uses default 1 decimal place', () => {
      expect(format.formatScore(450)).toBe('4.5')
    })

    test('supports custom decimal places', () => {
      expect(format.formatScore(450, 2)).toBe('4.50')
      expect(format.formatScore(450, 0)).toBe('5')
    })

    test('returns -- for null/undefined', () => {
      expect(format.formatScore(null)).toBe('--')
      expect(format.formatScore(undefined)).toBe('--')
    })
  })
})