kampeerauto.test.ts

import {
  Period,
  PropulsionType,
  Province,
  VehicleType,
  run,
  type Params,
} from "@motorrijtuigenbelasting/core";
import model from "../src/index.js";

// Baseline is https://www.belastingdienst.nl/wps/wcm/connect/nl/auto-en-vervoer/content/hulpmiddel-motorrijtuigenbelasting-berekenen

const total =
  (vehicleType: VehicleType) =>
  (propulsionType: PropulsionType) =>
  (
    weight: number,
    province: Province | null,
    co2Emission: number,
    rest: Omit<
      Params,
      "vehicleType" | "weight" | "province" | "propulsions"
    > = {}
  ) => {
    return run(
      model,
      {
        vehicleType,
        weight,
        propulsions: [{ type: propulsionType, co2Emission }],
        ...rest,
        province,
      },
      Period.quarter
    ).total;
  };

const totalKampeerauto = total(VehicleType.Kampeerauto);
const totalBenzine = totalKampeerauto(PropulsionType.Benzine);
const totalDiesel = totalKampeerauto(PropulsionType.Diesel);
const totalElektrisch = totalKampeerauto(PropulsionType.Elektrisch);
const totalWaterstof = totalKampeerauto(PropulsionType.Waterstof);

test("Benzine/1000/Utrecht", () => {
  expect(totalBenzine(1000, Province.Utrecht, 100)).toBe(26);
});

/**
 * @todo we receive 52 while the baseline gives 65. not sure what is wrong
 * here.
 */
test.failing("Benzine+bedrijfsmatig verhuurd/1000/Utrecht", () => {
  expect(
    totalDiesel(1000, Province.Utrecht, 100, {
      rentedForBusinessPurposes: true,
    })
  ).toBe(65);
});

test("Diesel/1000/Utrecht", () => {
  expect(totalDiesel(1000, Province.Utrecht, 100)).toBe(63);
});

test("Diesel+fijnstoftoeslag/1000/Utrecht", () => {
  expect(
    totalDiesel(1000, Province.Utrecht, 100, {
      particulateMatterSurtax: true,
    })
  ).toBe(74);
});

test("Elektrisch/1000/Utrecht", () => {
  expect(totalElektrisch(1000, Province.Utrecht, 100)).toBe(0);
});

test("Waterstof/1000/Utrecht", () => {
  expect(totalWaterstof(1000, Province.Utrecht, 100)).toBe(0);
});

/**
 * @todo this scenario is not covered in baseline calculator
 */
test.failing("Benzine_low_emission/1000/Utrecht", () => {
  expect(totalBenzine(1000, Province.Utrecht, 50)).toBe(NaN);
});

/**
 * @todo this scenario is not covered in baseline calculator
 */
test.failing("Benzine_no_emission/1000/Utrecht", () => {
  expect(totalBenzine(1000, Province.Utrecht, 0)).toBe(NaN);
});