polkadot-js/common

// Copyright 2017-2024 @polkadot/util-crypto authors & contributors
// SPDX-License-Identifier: Apache-2.0

/// <reference types="@polkadot/dev-test/globals.d.ts" />

import { base64Validate } from './index.js';

describe('base64Validate', (): void => {
  it('validates a mixed base64 utf8 string', (): void => {
    expect(
      () => base64Validate('aGVsbG8gd29ybGQg0J/RgNC40LLQtd^GC0YHRgtCy0YPRjiDQvNC4IOS9oOWlvQ==')
    ).toThrow(/Invalid base64 character "\^" \(0x5e\) at index 30/);
  });

  it('validates with one extra padding character', (): void => {
    expect(
      base64Validate('bGlnaHQgd28=')
    ).toEqual(true);
  });

  it('validates with two extra padding characters', (): void => {
    expect(
      base64Validate('bGlnaHQgdw==')
    ).toEqual(true);
  });

  it('validates misplaced padding characters', (): void => {
    expect(
      () => base64Validate('bGlnaHQgdw=g=')
    ).toThrow(/Invalid base64 padding sequence "=g"/);
  });
});