lightning/test/lnd_methods/offchain/test_connect_watchtower.js

Lightning Network client library

const {rejects} = require('node:assert').strict;
const test = require('node:test');

const {connectWatchtower} = require('./../../../');

const makeLnd = err => {
  return {tower_client: {addTower: ({}, cbk) => cbk(err)}};
};

const makeArgs = override => {
  const args = {
    lnd: makeLnd(),
    public_key: Buffer.alloc(33, 3).toString('hex'),
    socket: 'socket',
  };

  Object.keys(override || {}).forEach(key => args[key] = override[key]);

  return args;
};

const tests = [
  {
    args: makeArgs({lnd: undefined}),
    description: 'LND is required',
    error: [400, 'ExpectedLndToConnectToWatchtower'],
  },
  {
    args: makeArgs({public_key: undefined}),
    description: 'A public key is required',
    error: [400, 'ExpectedPublicKeyOfWatchtowerToConnectTo'],
  },
  {
    args: makeArgs({socket: undefined}),
    description: 'A socket is required',
    error: [400, 'ExpectedSocketOfWatchtowerToConnectTo'],
  },
  {
    args: makeArgs({
      lnd: makeLnd({
        message: '12 UNIMPLEMENTED: unknown service wtclientrpc.WatchtowerClient',
      }),
    }),
    description: 'Unimplemented error is returned',
    error: [501, 'ExpectedLndCompiledWithWtclientrpcBuildTag'],
  },
  {
    args: makeArgs({lnd: makeLnd('err')}),
    description: 'Server error is returned',
    error: [503, 'UnexpectedErrorConnectingWatchtower', {err: 'err'}],
  },
  {
    args: makeArgs({}),
    description: 'A tower is added',
  },
];

tests.forEach(({args, description, error, expected}) => {
  return test(description, async () => {
    if (!!error) {
      await rejects(connectWatchtower(args), error, 'Got expected error');
    } else {
      await connectWatchtower(args);
    }

    return;
  });
});