@node-dlc/wire/__tests__/messages/InitMessage.spec.ts

Lightning Network Wire Protocol

// tslint:disable: no-unused-expression
import { expect } from 'chai';

import { InitMessage } from '../../lib/messages/InitMessage';

describe('InitMessage', () => {
  it('should have correct default values', () => {
    const obj = new InitMessage();
    expect(obj.type).to.equal(16);
    expect(obj.features.toNumber()).to.equal(0);
  });

  describe('.serialize', () => {
    it('should serialize type', () => {
      const obj = new InitMessage();
      const result = obj.serialize();
      expect(result.toString('hex')).to.equal('001000000000');
    });

    it('should serialize features', () => {
      const obj = new InitMessage();
      obj.features.set(3);
      const result = obj.serialize();
      expect(result.toString('hex')).to.equal('00100000000108');
    });

    it('should serialize network tlv', () => {
      const obj = new InitMessage();
      obj.chainHashes.push(Buffer.alloc(32, 255));
      const result = obj.serialize();
      expect(result.toString('hex')).to.equal(
        '0010000000000120ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff',
      );
    });

    it('should serialize network tlv', () => {
      const obj = new InitMessage();
      obj.chainHashes.push(Buffer.alloc(32, 0xff));
      obj.chainHashes.push(Buffer.alloc(32, 0xee));
      const result = obj.serialize();
      expect(result.toString('hex')).to.equal(
        '0010000000000140ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee',
      );
    });
  });

  describe('.deserialize', () => {
    const remote = '0010000102000180';

    it('should deserialize type', () => {
      const result = InitMessage.deserialize(Buffer.from(remote, 'hex'));
      expect(result.type).to.equal(16);
    });

    it('should deserialize globalFeatures', () => {
      const result = InitMessage.deserialize(Buffer.from(remote, 'hex'));
      expect(result.features.toNumber()).to.equal(0x82);
    });

    it('should deserialize localFeatures', () => {
      const result = InitMessage.deserialize(Buffer.from(remote, 'hex'));
      expect(result.features.toNumber()).to.equal(0x82);
    });

    it('should deserialize network tlv', () => {
      const result = InitMessage.deserialize(
        Buffer.from(
          '0010000000000140ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee',
          'hex',
        ),
      );
      expect(result.chainHashes.length).to.equal(2);
      expect(result.chainHashes[0].toString('hex')).to.equal('ff'.repeat(32));
      expect(result.chainHashes[1].toString('hex')).to.equal('ee'.repeat(32));
    });
  });
});