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我正在尝试测试一个使用 viewBinding 来显示视图的片段，以及一个使用 viewModel 来获取该数据的片段。

我想编写一个 UI 测试来查看某些数据是否可见，但是到目前为止我没有运气，我希望有人可以帮助我，因为我对 UI 测试还是很陌生。

到目前为止，我尝试模拟 viewModel、liveData 和 viewBinding，但没有成功

这是我尝试做的一些示例类

我的视图模型：

   
    private val bike: MutableLiveData<Bike> = MutableLiveData()
  
    val getBike: LiveData<BikeType>
        get() = bikeType


    fun getBike() {
       
            BikeService().getBike(bikeId)
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe({
                    bike.postValue(it)
                }, {
                    Timber.e(it)
                }).let { disposeBag.add(it) }
        }
    }
 }

我的片段

class BikeFragment : AppAbstractBaseFragment<Any>(), BikeView,
    OnBackPressedListener {

    var mBinding: FragmentBikeBinding? = null
    var viewModel: BikeViewModel? = null

    var cancellable: Boolean = false


    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        mBinding = FragmentBikeBinding.inflate(inflater, container, false)
        return mBinding?.root
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        if (viewModel == null) {
            viewModel = ViewModelProvider(this).get(BikeViewModel::class.java)
        }
        mBinding?.apply {
            this.view = this@BikeDashboardFragment
            
            viewModel?.getBike?.observe(viewLifecycleOwner, { newBike ->
                bike = newBike

            })
          
        }
      
        viewModel?.getBike()
    }

考试

class BikeTest {

    @get:Rule
    val screenshotTestRule = ScreenshotTestRule()

    @Rule
    @JvmField
    val dataBindingIdlingResourceRule = DataBindingIdlingResourceRule()

    @Rule
    @JvmField
    var instantExecutor = InstantTaskExecutorRule()

    private var scenario: FragmentScenario<BikeFragment>? = null
    private var bikeData = mockk<MutableLiveData<Bike>>()

    private var viewModel = mockk<BikeViewModel>(relaxed = true)
    private val lifecycleOwner: LifecycleOwner = mockk()
    private var fakeBike =
        Bike(id = 1, cancellable = true, linkable = true, ownerName = "Joske")

    var context: Context? = null


    @Before
    fun setUp() {
        val app = ApplicationProvider.getApplicationContext<BaseApplication>()
        context = app.applicationContext

    }

    @Test
    fun loadBikeSeeTheRightBikeData() {
        scenario = launchFragmentInContainer(
            themeResId = R.style.Theme_Brand
        )
        dataBindingIdlingResourceRule.monitorFragment(scenario!!)
        scenario?.onFragment {
            it.mBinding?.bike = fakeBike
            onView(withId(R.id.ownerNameTextView)).check(matches(withText("Klaartje")))
        }
    }

}
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