Question

我们正在使用Swift 2.x（最新版）并想要BDD（单元测试）我们的代码。另外，我们也在使用RxSwift。我们的重写方法不会在我们的自定义测试存根中调用。我们的代码：

protocol SomethingDeliverable {
    func fetchSomething(somethingId: String, associatedList: String) -> Observable<String>
}

extension SomethingDeliverable {
    func fetchSomething(somethingId: String, associatedList: String) -> Observable<String> {
        return create { observer in
            return NopDisposable.instance
        }
    }
}

为了测试，我们有这个测试代码：

private class StubSomethingApi: SomethingDeliverable {

    var responseClosure: ((AnyObserver<String>) -> Void)?

    func fetchSomething(somethingId: String, associatedList: String) -> Observable<String> {
        return create { observer in
            if let responseClosure = self.responseClosure {
                responseClosure(observer)
            }
            return NopDisposable.instance
        }
    }
}

我们希望返回Observable＆lt; T ＆gt;而不是fetchSomething返回Observable＆lt; String ＆gt;并让StubSomethingAPI成功覆盖它以测试sakes。我们怎么能这样做？

Answer 1

这是你在找什么？

protocol SomethingDeliverable {
    associatedtype Element

    func fetchSomething(somethingId: String, associatedList: String) -> Observable<Element>
}

extension SomethingDeliverable {
    func fetchSomething(somethingId: String, associatedList: String) -> Observable<Element> {
        return create { observer in
            return NopDisposable.instance
        }
    }
}

private class StubSomethingApi<T>: SomethingDeliverable {

    typealias Element = T

    var responseClosure: ((AnyObserver<T>) -> Void)?

    func fetchSomething(somethingId: String, associatedList: String) -> Observable<T> {
        return create { observer in
            if let responseClosure = self.responseClosure {
                responseClosure(observer)
            }
            return NopDisposable.instance
        }
    }
}

如何覆盖Observable <t>进行测试的清酒？

1 个答案: