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 { stringToU8a } from '@polkadot/util';

import { base64Decode } from './index.js';

describe('base64Decode', (): void => {
  it('decodes an empty string)', (): void => {
    expect(
      base64Decode('')
    ).toEqual(
      stringToU8a('')
    );
  });

  it('decodes a mixed base64 utf8 string (1)', (): void => {
    expect(
      base64Decode('aGVsbG8gd29ybGQg0J/RgNC40LLQtdGC0YHRgtCy0YPRjiDQvNC4IOS9oOWlvQ==')
    ).toEqual(
      stringToU8a('hello world Приветствую ми 你好')
    );
  });

  it('decodes a mixed base64 utf8 string (2)', (): void => {
    expect(
      base64Decode('4pyTIMOgIGxhIG1vZGU=')
    ).toEqual(
      stringToU8a('✓ à la mode')
    );
  });

  it('decodes a mixed base64 utf8 string (3)', (): void => {
    expect(
      base64Decode('SGVsbG8gV29ybGQh')
    ).toEqual(
      stringToU8a('Hello World!')
    );
  });
});