spec-js/observables/if-spec.js

"use strict";
var chai_1 = require('chai');
var Rx = require('../../dist/package/Rx');
var Observable = Rx.Observable;
describe('Observable.if', function () {
    it('should subscribe to thenSource when the conditional returns true', function () {
        var e1 = Observable.if(function () { return true; }, Observable.of('a'));
        var expected = '(a|)';
        expectObservable(e1).toBe(expected);
    });
    it('should subscribe to elseSource when the conditional returns false', function () {
        var e1 = Observable.if(function () { return false; }, Observable.of('a'), Observable.of('b'));
        var expected = '(b|)';
        expectObservable(e1).toBe(expected);
    });
    it('should complete without an elseSource when the conditional returns false', function () {
        var e1 = Observable.if(function () { return false; }, Observable.of('a'));
        var expected = '|';
        expectObservable(e1).toBe(expected);
    });
    it('should raise error when conditional throws', function () {
        var e1 = Observable.if((function () {
            throw 'error';
        }), Observable.of('a'));
        var expected = '#';
        expectObservable(e1).toBe(expected);
    });
    it('should accept resolved promise as thenSource', function (done) {
        var expected = 42;
        var e1 = Observable.if(function () { return true; }, new Promise(function (resolve) { resolve(expected); }));
        e1.subscribe(function (x) {
            chai_1.expect(x).to.equal(expected);
        }, function (x) {
            done(new Error('should not be called'));
        }, function () {
            done();
        });
    });
    it('should accept resolved promise as elseSource', function (done) {
        var expected = 42;
        var e1 = Observable.if(function () { return false; }, Observable.of('a'), new Promise(function (resolve) { resolve(expected); }));
        e1.subscribe(function (x) {
            chai_1.expect(x).to.equal(expected);
        }, function (x) {
            done(new Error('should not be called'));
        }, function () {
            done();
        });
    });
    it('should accept rejected promise as elseSource', function (done) {
        var expected = 42;
        var e1 = Observable.if(function () { return false; }, Observable.of('a'), new Promise(function (resolve, reject) { reject(expected); }));
        e1.subscribe(function (x) {
            done(new Error('should not be called'));
        }, function (x) {
            chai_1.expect(x).to.equal(expected);
            done();
        }, function () {
            done(new Error('should not be called'));
        });
    });
    it('should accept rejected promise as thenSource', function (done) {
        var expected = 42;
        var e1 = Observable.if(function () { return true; }, new Promise(function (resolve, reject) { reject(expected); }));
        e1.subscribe(function (x) {
            done(new Error('should not be called'));
        }, function (x) {
            chai_1.expect(x).to.equal(expected);
            done();
        }, function () {
            done(new Error('should not be called'));
        });
    });
});
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