@owstack/wallet-service/test/locallock.js

A service for multisignature HD wallets

const chai = require('chai');
const sinon = require('sinon');
const should = chai.should();

const Service = require('../');
const serviceName = 'BTC';
const WalletService = Service[serviceName].WalletService;

const Lock = WalletService.LocalLock;

describe('Local locks', function () {
    let lock;
    beforeEach(function () {
        this.clock = sinon.useFakeTimers();
        lock = new Lock();
    });
    afterEach(function () {
        this.clock.restore();
    });
    it('should lock tasks using the same token', function () {
        let a = false;
        let b = false;
        lock.locked('123', 0, 0, function (err, release) {
            should.not.exist(err);
            a = true;
            setTimeout(function () {
                release();
            }, 5);
            lock.locked('123', 0, 0, function (err, release) {
                should.not.exist(err);
                b = true;
                release();
            });
        });
        a.should.equal(true);
        b.should.equal(false);
        this.clock.tick(10);
        a.should.equal(true);
        b.should.equal(true);
    });
    it('should not lock tasks using different tokens', function () {
        let i = 0;
        lock.locked('123', 0, 0, function (err, release) {
            should.not.exist(err);
            i++;
            setTimeout(function () {
                release();
            }, 5);
            lock.locked('456', 0, 0, function (err, release) {
                should.not.exist(err);
                i++;
                release();
            });
        });
        i.should.equal(2);
    });
    it('should return error if unable to acquire lock', function () {
        lock.locked('123', 0, 0, function (err, release) {
            should.not.exist(err);
            setTimeout(function () {
                release();
            }, 5);
            lock.locked('123', 1, 0, function (err, release) {
                should.exist(err);
                err.toString().should.contain('Could not acquire lock 123');
            });
        });
        this.clock.tick(2);
    });
    it('should release lock if acquired for a long time', function () {
        let i = 0;
        lock.locked('123', 0, 3, function (err, release) {
            should.not.exist(err);
            i++;
            lock.locked('123', 20, 0, function (err, release) {
                should.not.exist(err);
                i++;
                release();
            });
        });
        i.should.equal(1);
        this.clock.tick(1);
        i.should.equal(1);
        this.clock.tick(10);
        i.should.equal(2);
    });
    it('should only release one pending task on lock timeout', function () {
        let i = 0;
        lock.locked('123', 0, 3, function (err, release) {
            should.not.exist(err);
            i++;
            lock.locked('123', 5, 0, function (err, release) {
                should.not.exist(err);
                i++;
                setTimeout(function () {
                    release();
                }, 5);
            });
            lock.locked('123', 20, 0, function (err, release) {
                should.not.exist(err);
                i++;
                release();
            });
        });
        i.should.equal(1);
        this.clock.tick(4);
        i.should.equal(2);
        this.clock.tick(7);
        i.should.equal(3);
    });

});