spec-js/operators/mergeMapTo-spec.js
"use strict";
var chai_1 = require('chai');
var Rx = require('../../dist/package/Rx');
var Observable = Rx.Observable;
/** @test {mergeMapTo} */
describe('Observable.prototype.mergeMapTo', function () {
asDiagram('mergeMapTo( 10\u2014\u201410\u2014\u201410\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-x-xxxx-x---|';
var values = { x: 10 };
var result = e1.mergeMapTo(e2);
expectObservable(result).toBe(expected, values);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should mergeMapTo many regular interval inners', function () {
var x = cold('----1---2---3---(4|) ');
var xsubs = ['^ ! ',
// ----1---2---3---(4|)
' ^ ! ',
// ----1---2---3---(4|)
' ^ ! ',
// ----1---2---3---(4|)
' ^ ! '];
var e1 = hot('a---b-----------c-------d-------| ');
var e1subs = '^ !';
var expected = '----1---(21)(32)(43)(41)2---(31)(42)3---(4|)';
var source = e1.mergeMapTo(x);
expectObservable(source).toBe(expected);
expectSubscriptions(x.subscriptions).toBe(xsubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should map values to constant resolved promises and merge', function (done) {
var source = Rx.Observable.from([4, 3, 2, 1]);
var results = [];
source.mergeMapTo(Observable.from(Promise.resolve(42))).subscribe(function (x) {
results.push(x);
}, function (err) {
done(new Error('Subscriber error handler not supposed to be called.'));
}, function () {
chai_1.expect(results).to.deep.equal([42, 42, 42, 42]);
done();
});
});
it('should map values to constant rejected promises and merge', function (done) {
var source = Rx.Observable.from([4, 3, 2, 1]);
source.mergeMapTo(Observable.from(Promise.reject(42))).subscribe(function (x) {
done(new Error('Subscriber next handler not supposed to be called.'));
}, function (err) {
chai_1.expect(err).to.equal(42);
done();
}, function () {
done(new Error('Subscriber complete handler not supposed to be called.'));
});
});
it('should mergeMapTo values to resolved promises with resultSelector', function (done) {
var source = Rx.Observable.from([4, 3, 2, 1]);
var resultSelectorCalledWith = [];
var inner = Observable.from(Promise.resolve(42));
var resultSelector = function (outerVal, innerVal, outerIndex, innerIndex) {
resultSelectorCalledWith.push([].slice.call(arguments));
return 8;
};
var results = [];
var expectedCalls = [
[4, 42, 0, 0],
[3, 42, 1, 0],
[2, 42, 2, 0],
[1, 42, 3, 0],
];
source.mergeMapTo(inner, resultSelector).subscribe(function (x) {
results.push(x);
}, function (err) {
done(new Error('Subscriber error handler not supposed to be called.'));
}, function () {
chai_1.expect(results).to.deep.equal([8, 8, 8, 8]);
chai_1.expect(resultSelectorCalledWith).to.deep.equal(expectedCalls);
done();
});
});
it('should mergeMapTo values to rejected promises with resultSelector', function (done) {
var source = Rx.Observable.from([4, 3, 2, 1]);
var inner = Observable.from(Promise.reject(42));
var resultSelector = function () {
throw 'this should not be called';
};
source.mergeMapTo(inner, resultSelector).subscribe(function (x) {
done(new Error('Subscriber next handler not supposed to be called.'));
}, function (err) {
chai_1.expect(err).to.equal(42);
done();
}, function () {
done(new Error('Subscriber complete handler not supposed to be called.'));
});
});
it('should mergeMapTo many outer values to many inner values', function () {
var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
var e1 = hot('-a-------b-------c-------d-------| ');
var e1subs = '^ !';
var inner = cold('----i---j---k---l---| ', values);
var innersubs = [' ^ ! ',
' ^ ! ',
' ^ ! ',
' ^ !'];
var expected = '-----i---j---(ki)(lj)(ki)(lj)(ki)(lj)k---l---|';
expectObservable(e1.mergeMapTo(inner)).toBe(expected, values);
expectSubscriptions(inner.subscriptions).toBe(innersubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should mergeMapTo many outer to many inner, complete late', function () {
var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
var e1 = hot('-a-------b-------c-------d-----------------------|');
var e1subs = '^ !';
var inner = cold('----i---j---k---l---|', values);
var innersubs = [' ^ ! ',
' ^ ! ',
' ^ ! ',
' ^ ! '];
var expected = '-----i---j---(ki)(lj)(ki)(lj)(ki)(lj)k---l-------|';
expectObservable(e1.mergeMapTo(inner)).toBe(expected, values);
expectSubscriptions(inner.subscriptions).toBe(innersubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should mergeMapTo many outer to many inner, outer never completes', function () {
var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
var e1 = hot('-a-------b-------c-------d-------e---------------f------');
var e1subs = '^ !';
var inner = cold('----i---j---k---l---|', values);
var innersubs = [' ^ ! ',
' ^ ! ',
' ^ ! ',
' ^ ! ',
' ^ ! ',
' ^ !'];
var unsub = ' !';
var expected = '-----i---j---(ki)(lj)(ki)(lj)(ki)(lj)(ki)(lj)k---l---i-';
var source = e1.mergeMapTo(inner);
expectObservable(source, unsub).toBe(expected, values);
expectSubscriptions(inner.subscriptions).toBe(innersubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should not break unsubscription chains when result is unsubscribed explicitly', function () {
var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
var e1 = hot('-a-------b-------c-------d-------e---------------f------');
var e1subs = '^ !';
var inner = cold('----i---j---k---l---|', values);
var innersubs = [' ^ ! ',
' ^ ! ',
' ^ ! ',
' ^ ! ',
' ^ ! ',
' ^ !'];
var unsub = ' !';
var expected = '-----i---j---(ki)(lj)(ki)(lj)(ki)(lj)(ki)(lj)k---l---i-';
var source = e1
.map(function (x) { return x; })
.mergeMapTo(inner)
.map(function (x) { return x; });
expectObservable(source, unsub).toBe(expected, values);
expectSubscriptions(inner.subscriptions).toBe(innersubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should mergeMapTo many outer to many inner, inner never completes', function () {
var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
var e1 = hot('-a-------b-------c-------d-------| ');
var e1subs = '^ ';
var inner = cold('----i---j---k---l-', values);
var innersubs = [' ^ ',
' ^ ',
' ^ ',
' ^ '];
var expected = '-----i---j---(ki)(lj)(ki)(lj)(ki)(lj)k---l-';
expectObservable(e1.mergeMapTo(inner)).toBe(expected, values);
expectSubscriptions(inner.subscriptions).toBe(innersubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should mergeMapTo many outer to many inner, and inner throws', function () {
var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
var e1 = hot('-a-------b-------c-------d-------|');
var e1subs = '^ ! ';
var inner = cold('----i---j---k---l-------# ', values);
var innersubs = [' ^ ! ',
' ^ ! ',
' ^ ! ',
' (^!) '];
var expected = '-----i---j---(ki)(lj)(ki)#';
expectObservable(e1.mergeMapTo(inner)).toBe(expected, values);
expectSubscriptions(inner.subscriptions).toBe(innersubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should mergeMapTo many outer to many inner, and outer throws', function () {
var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
var e1 = hot('-a-------b-------c-------d-------#');
var e1subs = '^ !';
var inner = cold('----i---j---k---l---| ', values);
var innersubs = [' ^ ! ',
' ^ ! ',
' ^ !',
' ^ !'];
var expected = '-----i---j---(ki)(lj)(ki)(lj)(ki)#';
expectObservable(e1.mergeMapTo(inner)).toBe(expected, values);
expectSubscriptions(inner.subscriptions).toBe(innersubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should mergeMapTo many outer to many inner, both inner and outer throw', function () {
var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
var e1 = hot('-a-------b-------c-------d-------#');
var e1subs = '^ !';
var inner = cold('----i---j---k---l---#', values);
var innersubs = [' ^ !',
' ^ !',
' ^ !'];
var expected = '-----i---j---(ki)(lj)#';
expectObservable(e1.mergeMapTo(inner)).toBe(expected, values);
expectSubscriptions(inner.subscriptions).toBe(innersubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should mergeMapTo many cold Observable, with parameter concurrency=1', function () {
var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
var e1 = hot('-a-------b-------c---| ');
var e1subs = '^ !';
var inner = cold('----i---j---k---l---| ', values);
var innersubs = [' ^ ! ',
' ^ ! ',
' ^ !'];
var expected = '-----i---j---k---l-------i---j---k---l-------i---j---k---l---|';
function resultSelector(oV, iV, oI, iI) { return iV; }
var result = e1.mergeMapTo(inner, resultSelector, 1);
expectObservable(result).toBe(expected, values);
expectSubscriptions(inner.subscriptions).toBe(innersubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should mergeMap to many cold Observable, with parameter concurrency=2', function () {
var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
var e1 = hot('-a-------b-------c---| ');
var e1subs = '^ !';
var inner = cold('----i---j---k---l---| ', values);
var innersubs = [' ^ ! ',
' ^ ! ',
' ^ !'];
var expected = '-----i---j---(ki)(lj)k---(li)j---k---l---|';
function resultSelector(oV, iV, oI, iI) { return iV; }
var result = e1.mergeMapTo(inner, resultSelector, 2);
expectObservable(result).toBe(expected, values);
expectSubscriptions(inner.subscriptions).toBe(innersubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should mergeMapTo many cold Observable, with parameter concurrency=1, without resultSelector', function () {
var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
var e1 = hot('-a-------b-------c---| ');
var e1subs = '^ !';
var inner = cold('----i---j---k---l---| ', values);
var innersubs = [' ^ ! ',
' ^ ! ',
' ^ !'];
var expected = '-----i---j---k---l-------i---j---k---l-------i---j---k---l---|';
var result = e1.mergeMapTo(inner, 1);
expectObservable(result).toBe(expected, values);
expectSubscriptions(inner.subscriptions).toBe(innersubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should mergeMap to many cold Observable, with parameter concurrency=2, without resultSelector', function () {
var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
var e1 = hot('-a-------b-------c---| ');
var e1subs = '^ !';
var inner = cold('----i---j---k---l---| ', values);
var innersubs = [' ^ ! ',
' ^ ! ',
' ^ !'];
var expected = '-----i---j---(ki)(lj)k---(li)j---k---l---|';
var result = e1.mergeMapTo(inner, 2);
expectObservable(result).toBe(expected, values);
expectSubscriptions(inner.subscriptions).toBe(innersubs);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should mergeMapTo many outer to arrays', function () {
var e1 = hot('2-----4--------3--------2-------|');
var e1subs = '^ !';
var expected = '(0123)(0123)---(0123)---(0123)--|';
var source = e1.mergeMapTo(['0', '1', '2', '3']);
expectObservable(source).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should mergeMapTo many outer to inner arrays, using resultSelector', function () {
var e1 = hot('2-----4--------3--------2-------|');
var e1subs = '^ !';
var expected = '(2345)(4567)---(3456)---(2345)--|';
var source = e1.mergeMapTo(['0', '1', '2', '3'], function (x, y) { return String(parseInt(x) + parseInt(y)); });
expectObservable(source).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should mergeMapTo many outer to inner arrays, and outer throws', function () {
var e1 = hot('2-----4--------3--------2-------#');
var e1subs = '^ !';
var expected = '(0123)(0123)---(0123)---(0123)--#';
var source = e1.mergeMapTo(['0', '1', '2', '3']);
expectObservable(source).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should mergeMapTo many outer to inner arrays, resultSelector, outer throws', function () {
var e1 = hot('2-----4--------3--------2-------#');
var e1subs = '^ !';
var expected = '(2345)(4567)---(3456)---(2345)--#';
var source = e1.mergeMapTo(['0', '1', '2', '3'], function (x, y) { return String(parseInt(x) + parseInt(y)); });
expectObservable(source).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should mergeMapTo many outer to inner arrays, outer gets unsubscribed', function () {
var e1 = hot('2-----4--------3--------2-------|');
var e1subs = '^ !';
var unsub = ' !';
var expected = '(0123)(0123)--';
var source = e1.mergeMapTo(['0', '1', '2', '3']);
expectObservable(source, unsub).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should mergeMapTo many outer to inner arrays, resultSelector, outer unsubscribed', function () {
var e1 = hot('2-----4--------3--------2-------|');
var e1subs = '^ !';
var unsub = ' !';
var expected = '(2345)(4567)--';
var source = e1.mergeMapTo(['0', '1', '2', '3'], function (x, y) { return String(parseInt(x) + parseInt(y)); });
expectObservable(source, unsub).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should mergeMapTo many outer to inner arrays, resultSelector throws', function () {
var e1 = hot('2-----4--------3--------2-------|');
var e1subs = '^ !';
var expected = '(2345)(4567)---#';
var source = e1.mergeMapTo(['0', '1', '2', '3'], function (outer, inner) {
if (outer === '3') {
throw 'error';
}
return String(parseInt(outer) + parseInt(inner));
});
expectObservable(source).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should map and flatten', function () {
var source = Observable.of(1, 2, 3, 4).mergeMapTo(Observable.of('!'));
var expected = ['!', '!', '!', '!'];
var completed = false;
source.subscribe(function (x) {
chai_1.expect(x).to.equal(expected.shift());
}, null, function () {
chai_1.expect(expected.length).to.equal(0);
completed = true;
});
chai_1.expect(completed).to.be.true;
});
it('should map and flatten an Array', function () {
var source = Observable.of(1, 2, 3, 4).mergeMapTo(['!']);
var expected = ['!', '!', '!', '!'];
var completed = false;
source.subscribe(function (x) {
chai_1.expect(x).to.equal(expected.shift());
}, null, function () {
chai_1.expect(expected.length).to.equal(0);
completed = true;
});
chai_1.expect(completed).to.be.true;
});
it('should support type signatures', function () {
type(function () {
var o;
var m;
/* tslint:disable:no-unused-variable */
var a1 = o.mergeMapTo(m);
var a2 = o.mergeMapTo(m, 3);
var a3 = o.mergeMapTo(m, function (o, i) { return ({ o: o, i: i }); });
var a4 = o.mergeMapTo(m, function (o, i) { return ({ o: o, i: i }); }, 3);
/* tslint:enable:no-unused-variable */
});
});
});
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