unit-testing - MockK "io.mockk.MockKException: no answer found for:"错误

Question

嗨，我试图模拟我从使用我的演示者类调用的委托(delegate)器从改造返回的 Single observable 获得的响应，并且我收到以下错误:

io.mockk.MockKException: no answer found for: LoginPresenter(#1).login(LoginRequest(email=hello@gmail.com, password=password123))

这是我的测试代码

@Test
fun testKotlinMock(){

    val presenter : LoginPresenter = mockk<LoginPresenter>()

    val delegator = mockk<AccountDelegatorContract>()

    val viewCallback = mockk<LoginContract.LoginViewCallBack>()

    val cookieStore = mockk<PianoCookieStore>()

    val loginRequest = LoginRequest("hello@gmail.com", "password123")
    val customerResponse = CustomerResponse("jon", "richy")

    every { delegator.login(loginRequest) } returns Single.just(Response.success(any()))
    every { delegator.getCustomer() } returns Single.just(customerResponse)
    every { presenter.loginViewCallBack } returns viewCallback
    every { presenter.accountDelegator } returns delegator
    every { presenter.cookieStorage } returns cookieStore

    presenter.login(loginRequest)
}

我实际的 Presenter 代码如下所示:

@Inject
lateinit var loginViewCallBack: LoginViewCallBack

@Inject
lateinit var delegator: DelegatorContract

@Inject
lateinit var cookieStorage: CookieStore

@Inject
constructor()

override fun login(loginRequest: LoginRequest) {
    delegator.login(loginRequest)
        .flatMap({ response ->
            saveCookieAndContinue(response)
        })
        .observeOn(AndroidSchedulers.mainThread())
        .subscribeOn(Schedulers.io())
        .subscribe(object : SingleObserver<CustomerResponse>{
            override fun onSubscribe(d: Disposable) {
            }
    
            override fun onError(e: Throwable) {
                loginViewCallBack.onErrorLogin(PianoError.ERROR_LOGIN_INVALID)
                Log.d("JJJ", "login error")
            }

            override fun onSuccess(customerResponse : CustomerResponse) {
                loginViewCallBack.onLoginSuccess(customerResponse)
                Log.d("JJJ", "login successfully")
            }
        })
}
    
        private fun saveCookieAndContinue(response: Response<Void>): Single<CustomerResponse> {
            if (response.isSuccessful) {
                val headers = response.headers()
                cookieStorage.saveSessionCookies(headers.get(PianoCookieStore.COOKIE_HEADER_SET_NAME)!!)
                return accountDelegator.getCustomer()
            }
            //TODO: Change this to throw a login exception?
           throw RuntimeException()
        }

我基本上想模拟您从主代码中看到的注入(inject)依赖项，然后运行快乐路径单元测试。
当我调用 presenter.login(loginRequest) 并没有找到答案错误时，它失败了
这是我正在使用的 kotlin 扩展插件 http://mockk.io/

Answer 1

就我而言，我忘记检查是否调用了一种方法(例如，在代码中我们有 object.setData(person.getAge()) )。

every { object.setData(any()) } just Runs // Mock method
testedMethod() // Tested code runs here
verify { object.setData(any()) } // Check that object.setData() was called