import { describe, expect, it } from 'vitest'
import { physicalWeightKg, physicalWeightLb, totalPhysicalWeightLb } from './dispatchPhysicalWeight'

describe('dispatch physical weight', () => {
  it('keeps absent or invalid physical weight unknown', () => {
    for (const value of [null, undefined, '', 0, -1, Number.NaN, Number.POSITIVE_INFINITY]) expect(physicalWeightKg(value)).toBeNull()
    expect(physicalWeightLb(10)).toBeCloseTo(22.046226218)
  })
  it('never substitutes billing volume weight and does not publish partial totals', () => {
    const unknown = { grossWeightKg: null, volumeWeightKg: 999 }
    expect(totalPhysicalWeightLb([{ grossWeightKg: 20 }, unknown])).toBeNull()
    expect(totalPhysicalWeightLb([undefined])).toBeNull()
    expect(totalPhysicalWeightLb([{ grossWeightKg: 20 }, { grossWeightKg: 30 }])).toBeCloseTo(110.23113109)
    expect(totalPhysicalWeightLb([])).toBe(0)
  })
})