import { describe, expect, it } from 'vitest'
import { fmtMoney, fmtPrice, pnlClass, signed } from './format'

describe('format helpers', () => {
  it('formats money with two decimals', () => {
    expect(fmtMoney(10000)).toBe('10,000.00')
  })

  it('handles null', () => {
    expect(fmtMoney(null)).toBe('—')
    expect(fmtPrice(undefined)).toBe('—')
  })

  it('formats small prices with six decimals', () => {
    expect(fmtPrice(0.5)).toBe('0.500000')
  })

  it('signs positive values', () => {
    expect(signed(12.346)).toBe('+12.35')
    expect(signed(-3)).toBe('-3.00')
  })

  it('classifies pnl colour', () => {
    expect(pnlClass(5)).toBe('text-emerald-400')
    expect(pnlClass(-5)).toBe('text-rose-400')
    expect(pnlClass(0)).toBe('text-slate-300')
  })
})