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added new bind(to: [ObserverType]) operator to bind an observable to …
…a collection of obsevers
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Matthew Crenshaw
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Jul 16, 2018
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| // | ||
| // bindCollection+RxCocoa.swift | ||
| // RxSwiftExt | ||
| // | ||
| // Created by Matthew Crenshaw on 7/16/18. | ||
| // Copyright © 2018 RxSwift Community. All rights reserved. | ||
| // | ||
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| import RxSwift | ||
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| extension ObservableType { | ||
| /** | ||
| Creates new shared subscriptions and sends elements to collection of observers. | ||
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| - parameter to: Collection of observers that receives events. | ||
| - returns: Disposable object that can be used to unsubscribe the observers. | ||
| */ | ||
| func bind<O>(to observers: [O]) -> Disposable where O: ObserverType, Self.E == O.E { | ||
| let shared = self.share() | ||
| let disposables = observers.map(shared.bind(to:)) | ||
| return CompositeDisposable(disposables: disposables) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,39 @@ | ||
| // | ||
| // BindCollectionTests+RxCocoa.swift | ||
| // RxSwiftExt | ||
| // | ||
| // Created by Matthew Crenshaw on 7/16/18. | ||
| // Copyright © 2018 RxSwift Community. All rights reserved. | ||
| // | ||
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| @testable import RxSwiftExt | ||
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| import XCTest | ||
| import RxSwift | ||
| import RxTest | ||
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| class BindCollectionTests: XCTestCase { | ||
| func testBindCollection() { | ||
| let values = ["one", "two", "three", "four"] | ||
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| let scheduler = TestScheduler(initialClock: 0) | ||
| let observers = [scheduler.createObserver(String.self), | ||
| scheduler.createObserver(String.self), | ||
| scheduler.createObserver(String.self), | ||
| scheduler.createObserver(String.self)] | ||
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| _ = Observable.from(values).bind(to: observers) | ||
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| scheduler.start() | ||
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| let correct = [next(0, "one"), | ||
| next(0, "two"), | ||
| next(0, "three"), | ||
| next(0, "four"), | ||
| completed(0)] | ||
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| for observer in observers { | ||
| XCTAssertEqual(observer.events, correct) | ||
| } | ||
| } | ||
| } |