china-id-mask/test/test.js

A utility to mask Chinese ID card numbers by replacing birth date with asterisks

const assert = require('chai').assert;
const maskId = require('../index');

describe('china-id-mask', function() {
  it('should mask 18-digit ID correctly', function() {
    assert.equal(maskId('11010519491231002X'), '110105********002X');
  });

  it('should mask 15-digit ID correctly', function() {
    assert.equal(maskId('110105491231002'), '110105******002');
  });

  it('should handle numeric input', function() {
    assert.equal(maskId(11010519491231002), '110105********1002');
  });

  it('should throw error for invalid length', function() {
    assert.throws(() => maskId('123456'), 'Invalid Chinese ID card length. Must be 15 or 18 digits.');
  });

  it('should throw error for invalid format', function() {
    assert.throws(() => maskId('ABCDEFGHIJKLMNOPQR'), 'Invalid Chinese ID card format.');
  });
});