@reactivex/rxjs/spec-js/operators/finally-spec.js

Reactive Extensions for modern JavaScript

"use strict";
var chai_1 = require('chai');
var Rx = require('../../dist/cjs/Rx');
var Observable = Rx.Observable;
/** @test {finally} */
describe('Observable.prototype.finally', function () {
    it('should call finally after complete', function (done) {
        var completed = false;
        Observable.of(1, 2, 3)
            .finally(function () {
            chai_1.expect(completed).to.be.true;
            done();
        })
            .subscribe(null, null, function () {
            completed = true;
        });
    });
    it('should call finally after error', function (done) {
        var thrown = false;
        Observable.of(1, 2, 3)
            .map(function (x) {
            if (x === 3) {
                throw x;
            }
            return x;
        })
            .finally(function () {
            chai_1.expect(thrown).to.be.true;
            done();
        })
            .subscribe(null, function () {
            thrown = true;
        });
    });
    it('should call finally upon disposal', function (done) {
        var disposed = false;
        var subscription = Observable
            .timer(100)
            .finally(function () {
            chai_1.expect(disposed).to.be.true;
            done();
        }).subscribe();
        disposed = true;
        subscription.unsubscribe();
    });
    it('should call finally when synchronously subscribing to and unsubscribing ' +
        'from a shared Observable', function (done) {
        Observable.interval(50)
            .finally(done)
            .share()
            .subscribe()
            .unsubscribe();
    });
    it('should call two finally instances in succession on a shared Observable', function (done) {
        var invoked = 0;
        function checkFinally() {
            invoked += 1;
            if (invoked === 2) {
                done();
            }
        }
        Observable.of(1, 2, 3)
            .finally(checkFinally)
            .finally(checkFinally)
            .share()
            .subscribe();
    });
    it('should handle empty', function () {
        var executed = false;
        var s1 = hot('|');
        var result = s1.finally(function () { return executed = true; });
        var expected = '|';
        expectObservable(result).toBe(expected);
        // manually flush so `finally()` has chance to execute before the test is over.
        rxTestScheduler.flush();
        chai_1.expect(executed).to.be.true;
    });
    it('should handle never', function () {
        var executed = false;
        var s1 = hot('-');
        var result = s1.finally(function () { return executed = true; });
        var expected = '-';
        expectObservable(result).toBe(expected);
        // manually flush so `finally()` has chance to execute before the test is over.
        rxTestScheduler.flush();
        chai_1.expect(executed).to.be.false;
    });
    it('should handle throw', function () {
        var executed = false;
        var s1 = hot('#');
        var result = s1.finally(function () { return executed = true; });
        var expected = '#';
        expectObservable(result).toBe(expected);
        // manually flush so `finally()` has chance to execute before the test is over.
        rxTestScheduler.flush();
        chai_1.expect(executed).to.be.true;
    });
    it('should handle basic hot observable', function () {
        var executed = false;
        var s1 = hot('--a--b--c--|');
        var subs = '^          !';
        var expected = '--a--b--c--|';
        var result = s1.finally(function () { return executed = true; });
        expectObservable(result).toBe(expected);
        expectSubscriptions(s1.subscriptions).toBe(subs);
        // manually flush so `finally()` has chance to execute before the test is over.
        rxTestScheduler.flush();
        chai_1.expect(executed).to.be.true;
    });
    it('should handle basic cold observable', function () {
        var executed = false;
        var s1 = cold('--a--b--c--|');
        var subs = '^          !';
        var expected = '--a--b--c--|';
        var result = s1.finally(function () { return executed = true; });
        expectObservable(result).toBe(expected);
        expectSubscriptions(s1.subscriptions).toBe(subs);
        // manually flush so `finally()` has chance to execute before the test is over.
        rxTestScheduler.flush();
        chai_1.expect(executed).to.be.true;
    });
    it('should handle basic error', function () {
        var executed = false;
        var s1 = hot('--a--b--c--#');
        var subs = '^          !';
        var expected = '--a--b--c--#';
        var result = s1.finally(function () { return executed = true; });
        expectObservable(result).toBe(expected);
        expectSubscriptions(s1.subscriptions).toBe(subs);
        // manually flush so `finally()` has chance to execute before the test is over.
        rxTestScheduler.flush();
        chai_1.expect(executed).to.be.true;
    });
    it('should handle unsubscription', function () {
        var executed = false;
        var s1 = hot('--a--b--c--|');
        var subs = '^     !     ';
        var expected = '--a--b-';
        var unsub = '      !';
        var result = s1.finally(function () { return executed = true; });
        expectObservable(result, unsub).toBe(expected);
        expectSubscriptions(s1.subscriptions).toBe(subs);
        // manually flush so `finally()` has chance to execute before the test is over.
        rxTestScheduler.flush();
        chai_1.expect(executed).to.be.true;
    });
});
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