ログイン成否のテスト書けそうな気がしてきた気がする #CodePiece

CodePiece.swift

import Quick
import Nimble
import RxTest
import RxBlocking
import RxSwift
import RxCocoa
import Result
@testable import customer

class SigninViewModelSpec: QuickSpec {
    override func spec() {
        var viewModel: SigninViewModel!
        
        context("unauthrorized") {
            struct MockAuthorization: AuthorizationProtocol {
                func getAccessToken(email: String, password: String) -> Observable<Result<AccessToken, RxCocoaURLError>> {
                    return .just(.failure(.unknown))
                }
                func saveAccessToken(token: AccessToken) -> Observable<Bool> { return .just(true) }
            }
            
            beforeEach {
                viewModel = SigninViewModel((email: .just(""),
                                             password: .just(""),
                                             submitTap: .just()),
                                            auth: MockAuthorization())
            }
            
            it("should not be logged") {
                let loggedIn = try! viewModel.loggedIn.toBlocking(timeout: 3).last()
                expect(loggedIn).to(beFalse())
            }
        }
        
        context("authorization success") {
            struct MockAuthorization: AuthorizationProtocol {
                func getAccessToken(email: String, password: String) -> Observable<Result<AccessToken, RxCocoaURLError>> {
                    let token = AccessToken(value: "IM_DUMMY_TOKEN")
                    return .just(Result<AccessToken, RxCocoaURLError>.success(token))
                }
                func saveAccessToken(token: AccessToken) -> Observable<Bool> { return .just(true) }
            }
            
            beforeEach {
                viewModel = SigninViewModel((email: Observable.just(""),
                                             password: Observable.just(""),
                                             submitTap: Observable.just()),
                                            auth: MockAuthorization())
            }
            
            it("should be logged") {
                let loggedIn = try! viewModel.loggedIn.toBlocking(timeout: 3).last()
                expect(loggedIn).to(beTrue())
            }
        }
    }
}