@reactivex/rxjs/spec-js/observables/dom/webSocket-spec.js

Reactive Extensions for modern JavaScript

"use strict";
var chai_1 = require('chai');
var sinon = require('sinon');
var Rx = require('../../../dist/cjs/Rx.DOM');
var ajax_helper_1 = require('../../helpers/ajax-helper');
var Observable = Rx.Observable;
var __ws;
function setupMockWebSocket() {
    ajax_helper_1.MockWebSocket.clearSockets();
    __ws = __root__.WebSocket;
    __root__.WebSocket = ajax_helper_1.MockWebSocket;
}
function teardownMockWebSocket() {
    __root__.WebSocket = __ws;
    ajax_helper_1.MockWebSocket.clearSockets();
}
/** @test {webSocket} */
describe('Observable.webSocket', function () {
    beforeEach(function () {
        setupMockWebSocket();
    });
    afterEach(function () {
        teardownMockWebSocket();
    });
    it('should send and receive messages', function () {
        var messageReceived = false;
        var subject = Observable.webSocket('ws://mysocket');
        subject.next('ping');
        subject.subscribe(function (x) {
            chai_1.expect(x).to.equal('pong');
            messageReceived = true;
        });
        var socket = ajax_helper_1.MockWebSocket.lastSocket;
        chai_1.expect(socket.url).to.equal('ws://mysocket');
        socket.open();
        chai_1.expect(socket.lastMessageSent).to.equal('ping');
        socket.triggerMessage(JSON.stringify('pong'));
        chai_1.expect(messageReceived).to.be.true;
        subject.unsubscribe();
    });
    it('receive multiple messages', function () {
        var expected = ['what', 'do', 'you', 'do', 'with', 'a', 'drunken', 'sailor?'];
        var results = [];
        var subject = Observable.webSocket('ws://mysocket');
        subject.subscribe(function (x) {
            results.push(x);
        });
        var socket = ajax_helper_1.MockWebSocket.lastSocket;
        socket.open();
        expected.forEach(function (x) {
            socket.triggerMessage(JSON.stringify(x));
        });
        chai_1.expect(results).to.deep.equal(expected);
        subject.unsubscribe();
    });
    it('should queue messages prior to subscription', function () {
        var expected = ['make', 'him', 'walk', 'the', 'plank'];
        var subject = Observable.webSocket('ws://mysocket');
        expected.forEach(function (x) {
            subject.next(x);
        });
        var socket = ajax_helper_1.MockWebSocket.lastSocket;
        chai_1.expect(socket).not.exist;
        subject.subscribe();
        socket = ajax_helper_1.MockWebSocket.lastSocket;
        chai_1.expect(socket.sent.length).to.equal(0);
        socket.open();
        chai_1.expect(socket.sent.length).to.equal(expected.length);
        subject.unsubscribe();
    });
    it('should send messages immediately if already open', function () {
        var subject = Observable.webSocket('ws://mysocket');
        subject.subscribe();
        var socket = ajax_helper_1.MockWebSocket.lastSocket;
        socket.open();
        subject.next('avast!');
        chai_1.expect(socket.lastMessageSent).to.equal('avast!');
        subject.next('ye swab!');
        chai_1.expect(socket.lastMessageSent).to.equal('ye swab!');
        subject.unsubscribe();
    });
    it('should close the socket when completed', function () {
        var subject = Observable.webSocket('ws://mysocket');
        subject.subscribe();
        var socket = ajax_helper_1.MockWebSocket.lastSocket;
        socket.open();
        chai_1.expect(socket.readyState).to.equal(1); // open
        sinon.spy(socket, 'close');
        chai_1.expect(socket.close).not.have.been.called;
        subject.complete();
        chai_1.expect(socket.close).have.been.called;
        chai_1.expect(socket.readyState).to.equal(3); // closed
        subject.unsubscribe();
        socket.close.restore();
    });
    it('should close the socket with a code and a reason when errored', function () {
        var subject = Observable.webSocket('ws://mysocket');
        subject.subscribe();
        var socket = ajax_helper_1.MockWebSocket.lastSocket;
        socket.open();
        sinon.spy(socket, 'close');
        chai_1.expect(socket.close).not.have.been.called;
        subject.error({ code: 1337, reason: 'Too bad, so sad :(' });
        chai_1.expect(socket.close).have.been.calledWith(1337, 'Too bad, so sad :(');
        subject.unsubscribe();
        socket.close.restore();
    });
    it('should allow resubscription after closure via complete', function () {
        var subject = Observable.webSocket('ws://mysocket');
        subject.subscribe();
        var socket1 = ajax_helper_1.MockWebSocket.lastSocket;
        socket1.open();
        subject.complete();
        subject.next('a mariner yer not. yarrr.');
        subject.subscribe();
        var socket2 = ajax_helper_1.MockWebSocket.lastSocket;
        socket2.open();
        chai_1.expect(socket2).not.to.equal(socket1);
        chai_1.expect(socket2.lastMessageSent).to.equal('a mariner yer not. yarrr.');
        subject.unsubscribe();
    });
    it('should allow resubscription after closure via error', function () {
        var subject = Observable.webSocket('ws://mysocket');
        subject.subscribe();
        var socket1 = ajax_helper_1.MockWebSocket.lastSocket;
        socket1.open();
        subject.error({ code: 1337 });
        subject.next('yo-ho! yo-ho!');
        subject.subscribe();
        var socket2 = ajax_helper_1.MockWebSocket.lastSocket;
        socket2.open();
        chai_1.expect(socket2).not.to.equal(socket1);
        chai_1.expect(socket2.lastMessageSent).to.equal('yo-ho! yo-ho!');
        subject.unsubscribe();
    });
    it('should have a default resultSelector that parses message data as JSON', function () {
        var result;
        var expected = { mork: 'shazbot!' };
        var subject = Observable.webSocket('ws://mysocket');
        subject.subscribe(function (x) {
            result = x;
        });
        var socket = ajax_helper_1.MockWebSocket.lastSocket;
        socket.open();
        socket.triggerMessage(JSON.stringify(expected));
        chai_1.expect(result).to.deep.equal(expected);
        subject.unsubscribe();
    });
    describe('with a config object', function () {
        it('should send and receive messages', function () {
            var messageReceived = false;
            var subject = Observable.webSocket({ url: 'ws://mysocket' });
            subject.next('ping');
            subject.subscribe(function (x) {
                chai_1.expect(x).to.equal('pong');
                messageReceived = true;
            });
            var socket = ajax_helper_1.MockWebSocket.lastSocket;
            chai_1.expect(socket.url).to.equal('ws://mysocket');
            socket.open();
            chai_1.expect(socket.lastMessageSent).to.equal('ping');
            socket.triggerMessage(JSON.stringify('pong'));
            chai_1.expect(messageReceived).to.be.true;
            subject.unsubscribe();
        });
        it('should take a protocol and set it properly on the web socket', function () {
            var subject = Observable.webSocket({
                url: 'ws://mysocket',
                protocol: 'someprotocol'
            });
            subject.subscribe();
            var socket = ajax_helper_1.MockWebSocket.lastSocket;
            chai_1.expect(socket.protocol).to.equal('someprotocol');
            subject.unsubscribe();
        });
        it('should take a resultSelector', function () {
            var results = [];
            var subject = Observable.webSocket({
                url: 'ws://mysocket',
                resultSelector: function (e) {
                    return e.data + '!';
                }
            });
            subject.subscribe(function (x) {
                results.push(x);
            });
            var socket = ajax_helper_1.MockWebSocket.lastSocket;
            socket.open();
            ['ahoy', 'yarr', 'shove off'].forEach(function (x) {
                socket.triggerMessage(x);
            });
            chai_1.expect(results).to.deep.equal(['ahoy!', 'yarr!', 'shove off!']);
            subject.unsubscribe();
        });
        it('if the resultSelector fails it should go down the error path', function () {
            var subject = Observable.webSocket({
                url: 'ws://mysocket',
                resultSelector: function (e) {
                    throw new Error('I am a bad error');
                }
            });
            subject.subscribe(function (x) {
                chai_1.expect(x).to.equal('this should not happen');
            }, function (err) {
                chai_1.expect(err).to.be.an('error', 'I am a bad error');
            });
            var socket = ajax_helper_1.MockWebSocket.lastSocket;
            socket.open();
            socket.triggerMessage('weee!');
            subject.unsubscribe();
        });
        it('should accept a closingObserver', function () {
            var calls = 0;
            var subject = Observable.webSocket({
                url: 'ws://mysocket',
                closingObserver: {
                    next: function (x) {
                        calls++;
                        chai_1.expect(x).to.be.an('undefined');
                    }
                }
            });
            subject.subscribe();
            var socket = ajax_helper_1.MockWebSocket.lastSocket;
            socket.open();
            chai_1.expect(calls).to.equal(0);
            subject.complete();
            chai_1.expect(calls).to.equal(1);
            subject.subscribe();
            socket = ajax_helper_1.MockWebSocket.lastSocket;
            socket.open();
            subject.error({ code: 1337 });
            chai_1.expect(calls).to.equal(2);
            subject.unsubscribe();
        });
        it('should accept a closeObserver', function () {
            var expected = [{ wasClean: true }, { wasClean: false }];
            var closes = [];
            var subject = Observable.webSocket({
                url: 'ws://mysocket',
                closeObserver: {
                    next: function (e) {
                        closes.push(e);
                    }
                }
            });
            subject.subscribe();
            var socket = ajax_helper_1.MockWebSocket.lastSocket;
            socket.open();
            chai_1.expect(closes.length).to.equal(0);
            socket.triggerClose(expected[0]);
            chai_1.expect(closes.length).to.equal(1);
            subject.subscribe(null, function (err) {
                chai_1.expect(err).to.equal(expected[1]);
            });
            socket = ajax_helper_1.MockWebSocket.lastSocket;
            socket.open();
            socket.triggerClose(expected[1]);
            chai_1.expect(closes.length).to.equal(2);
            chai_1.expect(closes[0]).to.equal(expected[0]);
            chai_1.expect(closes[1]).to.equal(expected[1]);
            subject.unsubscribe();
        });
    });
    describe('multiplex', function () {
        it('should multiplex over the websocket', function () {
            var results = [];
            var subject = Observable.webSocket('ws://websocket');
            var source = subject.multiplex(function () {
                return { sub: 'foo' };
            }, function () {
                return { unsub: 'foo' };
            }, function (value) {
                return value.name === 'foo';
            });
            var sub = source.subscribe(function (x) {
                results.push(x.value);
            });
            var socket = ajax_helper_1.MockWebSocket.lastSocket;
            socket.open();
            chai_1.expect(socket.lastMessageSent).to.deep.equal({ sub: 'foo' });
            [1, 2, 3, 4, 5].map(function (x) {
                return {
                    name: x % 3 === 0 ? 'bar' : 'foo',
                    value: x
                };
            }).forEach(function (x) {
                socket.triggerMessage(JSON.stringify(x));
            });
            chai_1.expect(results).to.deep.equal([1, 2, 4, 5]);
            sinon.spy(socket, 'close');
            sub.unsubscribe();
            chai_1.expect(socket.lastMessageSent).to.deep.equal({ unsub: 'foo' });
            chai_1.expect(socket.close).have.been.called;
            socket.close.restore();
        });
    });
});
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