spec-js/operators/exhaustMap-spec.js
"use strict";
var Rx = require('../../dist/package/Rx');
var Observable = Rx.Observable;
/** @test {exhaustMap} */
describe('Observable.prototype.exhaustMap', function () {
asDiagram('exhaustMap(i => 10*i\u2014\u201410*i\u2014\u201410*i\u2014| )')('should map-and-flatten each item to an Observable', function () {
var e1 = hot('--1-----3--5-------|');
var e1subs = '^ !';
var e2 = cold('x-x-x| ', { x: 10 });
var expected = '--x-x-x-y-y-y------|';
var values = { x: 10, y: 30, z: 50 };
var result = e1.exhaustMap(function (x) { return e2.map(function (i) { return i * x; }); });
expectObservable(result).toBe(expected, values);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should handle outer throw', function () {
var x = cold('--a--b--c--|');
var xsubs = [];
var e1 = cold('#');
var e1subs = '(^!)';
var expected = '#';
var result = e1.exhaustMap(function () { return x; });
expectObservable(result).toBe(expected);
expectSubscriptions(x.subscriptions).toBe(xsubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should handle outer empty', function () {
var x = cold('--a--b--c--|');
var xsubs = [];
var e1 = cold('|');
var e1subs = '(^!)';
var expected = '|';
var result = e1.exhaustMap(function () { return x; });
expectObservable(result).toBe(expected);
expectSubscriptions(x.subscriptions).toBe(xsubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should handle outer never', function () {
var x = cold('--a--b--c--|');
var xsubs = [];
var e1 = cold('-');
var e1subs = '^';
var expected = '-';
var result = e1.exhaustMap(function () { return x; });
expectObservable(result).toBe(expected);
expectSubscriptions(x.subscriptions).toBe(xsubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should raise error if project throws', function () {
var e1 = hot('---x---------y-----------------z-------------|');
var e1subs = '^ !';
var expected = '---#';
var result = e1.exhaustMap(function (value) {
throw 'error';
});
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should raise error if selector throws', function () {
var x = cold('--a--b--c--| ');
var xsubs = ' ^ ! ';
var e1 = hot('---x---------y----z----|');
var e1subs = '^ ! ';
var expected = '-----# ';
var result = e1.exhaustMap(function (value) { return x; }, function () {
throw 'error';
});
expectObservable(result).toBe(expected);
expectSubscriptions(x.subscriptions).toBe(xsubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should switch with a selector function', function () {
var x = cold('--a--b--c--| ');
var xsubs = ' ^ ! ';
var y = cold('--d--e--f--| ');
var ysubs = [];
var z = cold('--g--h--i--| ');
var zsubs = ' ^ ! ';
var e1 = hot('---x---------y-----------------z-------------|');
var e1subs = '^ !';
var expected = '-----a--b--c---------------------g--h--i-----|';
var observableLookup = { x: x, y: y, z: z };
var result = e1.exhaustMap(function (value) { return observableLookup[value]; });
expectObservable(result).toBe(expected);
expectSubscriptions(x.subscriptions).toBe(xsubs);
expectSubscriptions(y.subscriptions).toBe(ysubs);
expectSubscriptions(z.subscriptions).toBe(zsubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should switch inner cold observables, outer is unsubscribed early', function () {
var x = cold('--a--b--c--| ');
var xsubs = ' ^ ! ';
var y = cold('--d--e--f--| ');
var ysubs = [];
var z = cold('--g--h--i--| ');
var zsubs = ' ^ ! ';
var e1 = hot('---x---------y-----------------z-------------|');
var unsub = ' ! ';
var e1subs = '^ ! ';
var expected = '-----a--b--c---------------------g- ';
var observableLookup = { x: x, y: y, z: z };
var result = e1.exhaustMap(function (value) { return observableLookup[value]; });
expectObservable(result, unsub).toBe(expected);
expectSubscriptions(x.subscriptions).toBe(xsubs);
expectSubscriptions(y.subscriptions).toBe(ysubs);
expectSubscriptions(z.subscriptions).toBe(zsubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should not break unsubscription chains when result is unsubscribed explicitly', function () {
var x = cold('--a--b--c--| ');
var xsubs = ' ^ ! ';
var y = cold('--d--e--f--| ');
var ysubs = [];
var z = cold('--g--h--i--| ');
var zsubs = ' ^ ! ';
var e1 = hot('---x---------y-----------------z-------------|');
var e1subs = '^ ! ';
var expected = '-----a--b--c---------------------g- ';
var unsub = ' ! ';
var observableLookup = { x: x, y: y, z: z };
var result = e1
.mergeMap(function (x) { return Observable.of(x); })
.exhaustMap(function (value) { return observableLookup[value]; })
.mergeMap(function (x) { return Observable.of(x); });
expectObservable(result, unsub).toBe(expected);
expectSubscriptions(x.subscriptions).toBe(xsubs);
expectSubscriptions(y.subscriptions).toBe(ysubs);
expectSubscriptions(z.subscriptions).toBe(zsubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should switch inner cold observables, inner never completes', function () {
var x = cold('--a--b--c--| ');
var xsubs = ' ^ ! ';
var y = cold('--d--e--f--| ');
var ysubs = [];
var z = cold('--g--h--i-----');
var zsubs = ' ^ ';
var e1 = hot('---x---------y-----------------z---------| ');
var e1subs = '^ ';
var expected = '-----a--b--c---------------------g--h--i-----';
var observableLookup = { x: x, y: y, z: z };
var result = e1.exhaustMap(function (value) { return observableLookup[value]; });
expectObservable(result).toBe(expected);
expectSubscriptions(x.subscriptions).toBe(xsubs);
expectSubscriptions(y.subscriptions).toBe(ysubs);
expectSubscriptions(z.subscriptions).toBe(zsubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should handle a synchronous switch an stay on the first inner observable', function () {
var x = cold('--a--b--c--d--e--| ');
var xsubs = ' ^ ! ';
var y = cold('---f---g---h---i--| ');
var ysubs = [];
var e1 = hot('---------(xy)----------------|');
var e1subs = '^ !';
var expected = '-----------a--b--c--d--e-----|';
var observableLookup = { x: x, y: y };
var result = e1.exhaustMap(function (value) { return observableLookup[value]; });
expectObservable(result).toBe(expected);
expectSubscriptions(x.subscriptions).toBe(xsubs);
expectSubscriptions(y.subscriptions).toBe(ysubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should switch inner cold observables, one inner throws', function () {
var x = cold('--a--b--c--d--# ');
var xsubs = ' ^ ! ';
var y = cold('---f---g---h---i--');
var ysubs = [];
var e1 = hot('---------x---------y---------| ');
var e1subs = '^ ! ';
var expected = '-----------a--b--c--d--# ';
var observableLookup = { x: x, y: y };
var result = e1.exhaustMap(function (value) { return observableLookup[value]; });
expectObservable(result).toBe(expected);
expectSubscriptions(x.subscriptions).toBe(xsubs);
expectSubscriptions(y.subscriptions).toBe(ysubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should switch inner hot observables', function () {
var x = hot('-----a--b--c--d--e--| ');
var xsubs = ' ^ ! ';
var y = hot('--p-o-o-p-------f---g---h---i--| ');
var ysubs = [];
var z = hot('---z-o-o-m-------------j---k---l---m--|');
var zsubs = ' ^ !';
var e1 = hot('---------x----y-----z--------| ');
var e1subs = '^ !';
var expected = '-----------c--d--e-----j---k---l---m--|';
var observableLookup = { x: x, y: y, z: z };
var result = e1.exhaustMap(function (value) { return observableLookup[value]; });
expectObservable(result).toBe(expected);
expectSubscriptions(x.subscriptions).toBe(xsubs);
expectSubscriptions(y.subscriptions).toBe(ysubs);
expectSubscriptions(z.subscriptions).toBe(zsubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should switch inner empty and empty', function () {
var x = cold('|');
var y = cold('|');
var xsubs = ' (^!) ';
var ysubs = ' (^!) ';
var e1 = hot('---------x---------y---------|');
var e1subs = '^ !';
var expected = '-----------------------------|';
var observableLookup = { x: x, y: y };
var result = e1.exhaustMap(function (value) { return observableLookup[value]; });
expectObservable(result).toBe(expected);
expectSubscriptions(x.subscriptions).toBe(xsubs);
expectSubscriptions(y.subscriptions).toBe(ysubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should switch inner empty and never', function () {
var x = cold('|');
var y = cold('-');
var xsubs = ' (^!) ';
var ysubs = ' ^ ';
var e1 = hot('---------x---------y---------|');
var e1subs = '^ ';
var expected = '------------------------------';
var observableLookup = { x: x, y: y };
var result = e1.exhaustMap(function (value) { return observableLookup[value]; });
expectObservable(result).toBe(expected);
expectSubscriptions(x.subscriptions).toBe(xsubs);
expectSubscriptions(y.subscriptions).toBe(ysubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should never switch inner never', function () {
var x = cold('-');
var y = cold('#');
var xsubs = ' ^ ';
var ysubs = [];
var e1 = hot('---------x---------y----------|');
var e1subs = '^ ';
var expected = '-------------------------------';
var observableLookup = { x: x, y: y };
var result = e1.exhaustMap(function (value) { return observableLookup[value]; });
expectObservable(result).toBe(expected);
expectSubscriptions(x.subscriptions).toBe(xsubs);
expectSubscriptions(y.subscriptions).toBe(ysubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should switch inner empty and throw', function () {
var x = cold('|');
var y = cold('#');
var xsubs = ' (^!) ';
var ysubs = ' (^!) ';
var e1 = hot('---------x---------y---------|');
var e1subs = '^ ! ';
var expected = '-------------------# ';
var observableLookup = { x: x, y: y };
var result = e1.exhaustMap(function (value) { return observableLookup[value]; });
expectObservable(result).toBe(expected);
expectSubscriptions(x.subscriptions).toBe(xsubs);
expectSubscriptions(y.subscriptions).toBe(ysubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should handle outer error', function () {
var x = cold('--a--b--c--d--e--|');
var xsubs = ' ^ ! ';
var e1 = hot('---------x---------# ');
var e1subs = '^ ! ';
var expected = '-----------a--b--c-# ';
var observableLookup = { x: x };
var result = e1.exhaustMap(function (value) { return observableLookup[value]; });
expectObservable(result).toBe(expected);
expectSubscriptions(x.subscriptions).toBe(xsubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should switch with resultSelector goodness', function () {
var x = cold('--a--b--c--d--e-| ');
var xsubs = ' ^ ! ';
var y = cold('---f---g---h---i--| ');
var ysubs = [];
var z = cold('---k---l---m---n--|');
var zsubs = ' ^ !';
var e1 = hot('--x---------y------z-| ');
var e1subs = '^ !';
var expected = '----a--b--c--d--e-----k---l---m---n--|';
var observableLookup = { x: x, y: y, z: z };
var expectedValues = {
a: ['x', 'a', 0, 0],
b: ['x', 'b', 0, 1],
c: ['x', 'c', 0, 2],
d: ['x', 'd', 0, 3],
e: ['x', 'e', 0, 4],
k: ['z', 'k', 1, 0],
l: ['z', 'l', 1, 1],
m: ['z', 'm', 1, 2],
n: ['z', 'n', 1, 3],
};
var result = e1.exhaustMap(function (value) { return observableLookup[value]; }, function (innerValue, outerValue, innerIndex, outerIndex) { return [innerValue, outerValue, innerIndex, outerIndex]; });
expectObservable(result).toBe(expected, expectedValues);
expectSubscriptions(x.subscriptions).toBe(xsubs);
expectSubscriptions(y.subscriptions).toBe(ysubs);
expectSubscriptions(z.subscriptions).toBe(zsubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
});
//# sourceMappingURL=exhaustMap-spec.js.map
