@fnzc/nz-ird-validator/spec/spec.js

Validates New Zealand tax numbers (IRD)

const validator = require("../index.js");

describe("Valid New Zealand Tax Numbers", function () {
  it("should pass IRD number 49091850", function () {
    expect(validator.isValidIRDNumber("49091850")).toBe(true);
  });

  it("should pass IRD number 49-091-850", function () {
    expect(validator.isValidIRDNumber("49-091-850")).toBe(true);
  });

  it("should pass IRD number 35901981", function () {
    expect(validator.isValidIRDNumber("35901981")).toBe(true);
  });

  it("should pass IRD number 49098576", function () {
    expect(validator.isValidIRDNumber("49098576")).toBe(true);
  });

  it("should pass IRD number 136410132", function () {
    expect(validator.isValidIRDNumber("136410132")).toBe(true);
  });

  it("should pass IRD number 136-410-132", function () {
    expect(validator.isValidIRDNumber("136-410-132")).toBe(true);
  });
});
describe("Invalid New Zealand Tax Numbers", function () {
  it("should reject bad checkdigit 136410133", function () {
    expect(validator.isValidIRDNumber("136410133")).toBe(false);
  });

  it("should reject bad checkdigit with dashes 136-410-133", function () {
    expect(validator.isValidIRDNumber("136-410-133")).toBe(false);
  });
  it("should reject valid IRD number with bad dashes 136410-132", function () {
    expect(validator.isValidIRDNumber("136410-132")).toBe(false);
  });
  it("should reject long IRD number 0136410132", function () {
    expect(validator.isValidIRDNumber("0136410132")).toBe(false);
  });
});

describe("Configure format", function () {
  it("dashes should reject valid number missing dashes", function () {
    expect(validator.configureValidator({requireFormat: 'dashes'})('35901981')).toBe(false);
  });
  it("dashes should allow valid number with dashes", function () {
    expect(validator.configureValidator({requireFormat: 'dashes'})('35-901-981')).toBe(true);
  });

  it("numeric should allow valid number without dashes", function () {
    expect(validator.configureValidator({requireFormat: 'numeric'})('35901981')).toBe(true);
  });
  it("numeric should reject valid number with dashes", function () {
    expect(validator.configureValidator({requireFormat: 'numeric'})('35-901-981')).toBe(false);
  });

  it("either should allow valid number missing dashes", function () {
    expect(validator.configureValidator({requireFormat: 'either'})('35901981')).toBe(true);
  });
  it("either should reject missing dashes", function () {
    expect(validator.configureValidator({requireFormat: 'either'})('35-901-981')).toBe(true);
  });

  it("should fail on unknown format", () => {
    expect(() => validator.configureValidator({requireFormat: 'foo'})('123-123-123')).toThrow()
  })
});