我正在尝试设置类似于GithubBrowserSample的UI测试,但看起来示例项目仅为Fragment
提供了模拟的ViewModel
,而没有Activity
的示例。
以下是我的代码,我试图通过模拟ViewModel
来测试Activity
。 但是ViewModel
在onCreate()
之前未被设置。
@RunWith(AndroidJUnit4::class)
class MainActivityTest {
val viewModel = mock(MainViewModel::class.java)
@Rule
@JvmField
val activityRule = ActivityTestRule<MainActivity>(MainActivity::class.java, true, true)
private val liveData = MutableLiveData<Resource<Object>>()
@Before
open fun setUp() {
activityRule.activity.viewModelFactory = createViewModelFor(viewModel)
`when`(viewModel.liveData).thenReturn(liveData)
viewModel.liveData?.observeForever(mock(Observer::class.java) as Observer<Resource<Object>>)
liveData.postValue(Resource.success(Object()))
}
fun <T : ViewModel> createViewModelFor(model: T): ViewModelProvider.Factory =
object : ViewModelProvider.Factory {
override fun <T : ViewModel> create(modelClass: Class<T>): T {
if (modelClass.isAssignableFrom(model.javaClass)) {
return model as T
}
throw IllegalArgumentException("unexpected model class " + modelClass)
}
}
}
请问有人能帮我解决这个问题吗?