随机试验碰撞TDD Kotlin

Question

下面的测试会导致随机崩溃。大多数时候我都不知所措。

> @Test fun `perform login without a previously saved user`() =
> runBlocking {
>     testSavedUser1LiveData = MutableLiveData()
> 
>     coEvery { userDao.getCurrentUserLiveData() } returns testSavedUser1LiveData
>     coEvery { userDao.upsert(any()) } returns Unit
> 
>     coEvery { userAPIDataSource.fetchLoginUser(loginCredentials) } returns Unit
>     coEvery { userAPIDataSource.getLoginUserResults } returns testUser1ResponseLiveDataOfJsonElement
> 
>     loginRepository = LoginRepositoryImpl(userDao, companyDao, userAPIDataSource)
>     loginViewModel = LoginViewModel(dispatchers, validator, loginRepository)
> 
>     loginViewModel.loginLiveData().observeForever(loginLiveDataObserver)
>     loginViewModel.login(loginCredentials)
> 
>     coVerifyOrder {
>         loginLiveDataObserver.onChanged(enableLoading)
>         loginLiveDataObserver.onChanged(loginResults)
>         loginLiveDataObserver.onChanged(disableLoading)
>     } }

附带的代码是fun login（凭据：LoginCredentials）{_LoginLivedata.value=LoginResult.Loading（true）

    if(validator.validate(credentials)) {
        triggerLogin(credentials)
    } else {
        _loginLiveData.value = LoginResult.Failure("Incorrect Credentials")
        _loginLiveData.value = LoginResult.Loading(false)
    }
}

private fun triggerLogin(credentials: LoginCredentials) {
    launch(dispatchers.background) {
        loginRepository.performLogin(credentials)

        withContext(dispatchers.ui) {
            _loginLiveData.value = loginRepository.getLoginUserResults
            _loginLiveData.value = LoginResult.Loading(false)
        }
    }
}

Java.lang.AssertionError：验证失败：发生的调用少于订单验证序列所要求的调用。

匹配器：观察者(#94).OnChanged(eq(Loading(value=true))))观察者(#94).OnChanged(eq(Success(User=当前用户响应:1:testUserName1)))观察者(#94).OnChanged(eq(Loading(value=false)))

调用：1）观察者(#94).OnChanged（加载（值=true))2)观察者(#94).OnChanged（成功（用户=当前用户响应:1:testUserName1))

堆栈跟踪：1）
io.mockk.impl.internalplatform.captureStackTrace
(internalplatform.kt:114)
io.mockk.impl.stub.mockkstub.handleInvocation
(mockkstub.kt:256)
io.mockk.impl.instantiation.jvmmockfactoryhelper$mockhandler$1.invocationn.LoginFeatureShould$在没有以前保存的用户$1的情况下执行登录。

                                                                     sun.reflect.NativeMethodAccessorImpl.invoke0                          

2)
io.mockk.impl.internalplatform.capturestacktrace
(internalplatform.kt:114)
io.mockk.impl.stub.mockkstub.handleinvocation
(Mockkstub.kt:256)
io.mockk.impl.instantiation.jvmmockfactoryhelper$mockhandler$1.invocation(jvmmockfactoryhelper.kt:25)
io.mockk.proxy.jvm.advice.inter模型$TriggerLogin$1$1.Invoke
(loginviewmodel.kt:-1)
kotlinx.coroutines.intrinsics.undispatchedkt.startundispatchedorreturn(undispatched.kt:91)
kotlinx.coroutines.builderskt__builders_commonkt.withcontext
(builders.common.kt:146)
kotlinx.coroutines.builderskt.withcontext(-:1)

  com.test.testapp.ui.login.LoginViewModel$triggerLogin$1.invokeSuspend

(loginviewmodel.kt:98)
kotlin.coroutines.jvm.internal.baseContinuationimpl.resumewith
(continuationimpl.kt:32)
kotlinx.coroutines.dispatchedtask.run(dispatched.kt:233)
kotlinx.coroutinesscheduler.runsafety
(coroutinescheduler.kt:594)
kotlinx.coroutines.scheduler.access$runsafety

Answer 1

在文档或媒体上检查timeout功能，了解高级功能（同样链接在https://mockk.io上）