Hi, How can you stub closure value ?

[jack-liukui]

@Spyable
public protocol RepositorySubscriptionCheckoutProtocol {
    func executeTest(
        with dto: String,
        on completion: @escaping (Int, Error?, String?) -> Void
    )
}

How do we stub (Int, Error?, String?) inside RepositorySubscriptionCheckoutProtocolSpy class ?

[dafurman]

You can use executeTestWithOnClosure, like this:

spy.executeTestWithOnClosure = { dto, completion in
    completion(0, nil, "injectedString") // provide the values here that you want the spy to deliver via your closure
}

Ex:

let spy = RepositorySubscriptionCheckoutProtocolSpy()
spy.executeTestWithOnClosure = { dto, completion in
    completion(1234, nil, "injectedString")
}
// I'm simulating the trigger of this function from your main code
spy.executeTest(with: "", on: { num, err, str in
    print(num, err, str)
})

prints

1234 nil Optional("injectedString")