@tetcoin/util/hex/toU8a.spec.js

A collection of useful utilities for @tetcoin

"use strict";

var _ = require(".");

// Copyright 2017-2019 @polkadot/util authors & contributors
// This software may be modified and distributed under the terms
// of the Apache-2.0 license. See the LICENSE file for details.
describe('hexToU8a', () => {
  it('returns an empty Uint8Array when null provided', () => {
    expect((0, _.hexToU8a)(null)).toHaveLength(0);
  });
  it('returns a Uint8Array with the correct values', () => {
    expect((0, _.hexToU8a)('0x80000a')).toEqual(new Uint8Array([128, 0, 10]));
  });
  it('returns a Uint8Array with the correct values (bitLengfth)', () => {
    expect((0, _.hexToU8a)('0x80000a', 32)).toEqual(new Uint8Array([0, 128, 0, 10]));
  });
  it('fails when non-hex value provided', () => {
    expect(() => (0, _.hexToU8a)('notahex')).toThrow(/hex value to convert/);
  });
});