spec-js/operators/every-spec.js
"use strict";
var chai_1 = require('chai');
var Rx = require('../../dist/cjs/Rx');
var Observable = Rx.Observable;
/** @test {every} */
describe('Observable.prototype.every', function () {
function truePredicate(x) {
return true;
}
function predicate(x) {
return x % 5 === 0;
}
asDiagram('every(x => x % 5 === 0)')('should return false if only some of element matches with predicate', function () {
var source = hot('--a--b--c--d--e--|', { a: 5, b: 10, c: 15, d: 18, e: 20 });
var sourceSubs = '^ ! ';
var expected = '-----------(F|) ';
expectObservable(source.every(predicate)).toBe(expected, { F: false });
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
});
it('should accept thisArg with scalar observables', function () {
var thisArg = {};
Observable.of(1).every(function (value, index) {
chai_1.expect(this).to.deep.equal(thisArg);
return true;
}, thisArg).subscribe();
});
it('should accept thisArg with array observables', function () {
var thisArg = {};
Observable.of(1, 2, 3, 4).every(function (value, index) {
chai_1.expect(this).to.deep.equal(thisArg);
return true;
}, thisArg).subscribe();
});
it('should accept thisArg with ordinary observables', function () {
var thisArg = {};
Observable.create(function (observer) {
observer.next(1);
observer.complete();
})
.every(function (value, index) {
chai_1.expect(this).to.deep.equal(thisArg);
}, thisArg).subscribe();
});
it('should emit true if source is empty', function () {
var source = hot('-----|');
var sourceSubs = '^ !';
var expected = '-----(x|)';
expectObservable(source.every(predicate)).toBe(expected, { x: true });
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
});
it('should emit false if single source of element does not match with predicate', function () {
var source = hot('--a--|');
var sourceSubs = '^ !';
var expected = '--(x|)';
expectObservable(source.every(predicate)).toBe(expected, { x: false });
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
});
it('should emit false if none of element does not match with predicate', function () {
var source = hot('--a--b--c--d--e--|');
var sourceSubs = '^ !';
var expected = '--(x|)';
expectObservable(source.every(predicate)).toBe(expected, { x: false });
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
});
it('should return false if only some of element matches with predicate', function () {
var source = hot('--a--b--c--d--e--|', { a: 5, b: 10, c: 15 });
var sourceSubs = '^ !';
var expected = '-----------(x|)';
expectObservable(source.every(predicate)).toBe(expected, { x: false });
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
});
it('should allow unsubscribing early and explicitly', function () {
var source = hot('--a--b--c--d--e--|', { a: 5, b: 10, c: 15 });
var sourceSubs = '^ ! ';
var expected = '-------- ';
var unsub = ' ! ';
var result = source.every(predicate);
expectObservable(result, unsub).toBe(expected);
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
});
it('should not break unsubscription chains when result Observable is unsubscribed', function () {
var source = hot('--a--b--c--d--e--|', { a: 5, b: 10, c: 15 });
var sourceSubs = '^ ! ';
var expected = '-------- ';
var unsub = ' ! ';
var result = source
.mergeMap(function (x) { return Observable.of(x); })
.every(predicate)
.mergeMap(function (x) { return Observable.of(x); });
expectObservable(result, unsub).toBe(expected);
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
});
it('should propagate error if predicate eventually throws', function () {
var source = hot('--a--b--c--d--e--|');
var sourceSubs = '^ !';
var expected = '--------#';
function faultyPredicate(x) {
if (x === 'c') {
throw 'error';
}
else {
return true;
}
}
expectObservable(source.every(faultyPredicate)).toBe(expected);
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
});
it('should emit true if single source element match with predicate', function () {
var source = hot('--a--|', { a: 5 });
var sourceSubs = '^ !';
var expected = '-----(x|)';
expectObservable(source.every(predicate)).toBe(expected, { x: true });
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
});
it('should emit true if Scalar source matches with predicate', function () {
var source = Observable.of(5);
var expected = '(T|)';
expectObservable(source.every(predicate)).toBe(expected, { T: true });
});
it('should emit false if Scalar source does not match with predicate', function () {
var source = Observable.of(3);
var expected = '(F|)';
expectObservable(source.every(predicate)).toBe(expected, { F: false });
});
it('should propagate error if predicate throws on Scalar source', function () {
var source = Observable.of(3);
var expected = '#';
function faultyPredicate(x) {
throw 'error';
}
expectObservable(source.every(faultyPredicate)).toBe(expected);
});
it('should emit true if Array source matches with predicate', function () {
var source = Observable.of(5, 10, 15, 20);
var expected = '(T|)';
expectObservable(source.every(predicate)).toBe(expected, { T: true });
});
it('should emit false if Array source does not match with predicate', function () {
var source = Observable.of(5, 9, 15, 20);
var expected = '(F|)';
expectObservable(source.every(predicate)).toBe(expected, { F: false });
});
it('should propagate error if predicate eventually throws on Array source', function () {
var source = Observable.of(5, 10, 15, 20);
var expected = '#';
function faultyPredicate(x) {
if (x === 15) {
throw 'error';
}
return true;
}
expectObservable(source.every(faultyPredicate)).toBe(expected);
});
it('should emit true if all source element matches with predicate', function () {
var source = hot('--a--b--c--d--e--|', { a: 5, b: 10, c: 15, d: 20, e: 25 });
var sourceSubs = '^ !';
var expected = '-----------------(x|)';
expectObservable(source.every(predicate)).toBe(expected, { x: true });
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
});
it('should raise error if source raises error', function () {
var source = hot('--#');
var sourceSubs = '^ !';
var expected = '--#';
expectObservable(source.every(truePredicate)).toBe(expected);
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
});
it('should not completes if source never emits', function () {
var source = cold('-');
var sourceSubs = '^';
var expected = '-';
expectObservable(source.every(truePredicate)).toBe(expected);
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
});
it('should emit true if source element matches with predicate after subscription', function () {
var source = hot('--z--^--a--b--c--d--e--|', { a: 5, b: 10, c: 15, d: 20, e: 25 });
var sourceSubs = '^ !';
var expected = '------------------(x|)';
expectObservable(source.every(predicate)).toBe(expected, { x: true });
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
});
it('should emit false if source element does not match with predicate after subscription', function () {
var source = hot('--z--^--b--c--z--d--|', { a: 5, b: 10, c: 15, d: 20 });
var sourceSubs = '^ !';
var expected = '---------(x|)';
expectObservable(source.every(predicate)).toBe(expected, { x: false });
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
});
it('should raise error if source raises error after subscription', function () {
var source = hot('--z--^--#');
var sourceSubs = '^ !';
var expected = '---#';
expectObservable(source.every(truePredicate)).toBe(expected);
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
});
it('should emit true if source does not emit after subscription', function () {
var source = hot('--z--^-----|');
var sourceSubs = '^ !';
var expected = '------(x|)';
expectObservable(source.every(predicate)).toBe(expected, { x: true });
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
});
});
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