polish-validators/dist/esm/id-card.spec.js

A set of validator functions that check common polish numbers.

import { isIdCardNumberValid } from './id-card';
describe('Polish ID Card Number Validation', () => {
    describe('isIdCardNumberValid', () => {
        it('should return true for a valid Polish ID card number', () => {
            expect(isIdCardNumberValid('ABC412345')).toBe(true);
        });
        it('should return true for a valid ID card number with extra spaces or in lower-case', () => {
            // The utility function toLettersAndDigits should ignore extra whitespace and case.
            // "abc 412345" should be normalized to "ABC412345" and pass validation.
            expect(isIdCardNumberValid('abc 412345')).toBe(true);
        });
        it('should return false if the ID card number does not match the required pattern', () => {
            // Example with only two letters and too many digits (pattern must be 3 letters and 6 digits).
            expect(isIdCardNumberValid('AB4123456')).toBe(false);
        });
        it('should return false for an ID card number with an incorrect control digit', () => {
            // "ABC512345" is the same as the valid number except the control digit (position 3) is altered from 4 to 5.
            expect(isIdCardNumberValid('ABC512345')).toBe(false);
        });
        it('should return false for an ID card number with invalid characters in the numeric part', () => {
            // The numeric part should contain only digits; here a non-digit is introduced.
            expect(isIdCardNumberValid('ABC4A2345')).toBe(false);
        });
    });
});