在 UI 测试中显示片段内的对话框(对话框片段)

Question

我正在为一个片段编写UI测试用例。我正在使用launchFragmentInContainer来启动独立于活动的片段。

场景是，单击按钮时，应该显示一个对话框片段，但是当我这样做时，屏幕上没有任何内容。

这是我的主要片段

package com.cbre.host.onboarding.locationaccess
import android.Manifest
import android.content.pm.PackageManager
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.activity.OnBackPressedCallback
import androidx.navigation.fragment.findNavController
import com.airbnb.mvrx.fragmentViewModel
import com.airbnb.mvrx.withState
import com.cbre.host.common.AppNavigator
import com.cbre.host.common.BaseFragment
import com.cbre.host.common.utils.Constants
import com.cbre.host.core.permission.PermissionProvider
import com.cbre.host.onboarding.R
import com.cbre.host.onboarding.databinding.LocationAccessFragmentBinding
import kotlinx.android.synthetic.main.location_access_fragment.*
import org.koin.android.ext.android.inject
class LocationAccessFragment : BaseFragment() {
private lateinit var binding: LocationAccessFragmentBinding
private val _viewModel: LocationAccessViewModel by fragmentViewModel()
private val _permissionProvider: PermissionProvider by inject()
private val _appNavigator: AppNavigator by inject()

override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
binding = LocationAccessFragmentBinding.inflate(inflater, container, false)
binding.lifecycleOwner = viewLifecycleOwner
return binding.root
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
requireActivity().onBackPressedDispatcher.addCallback(
viewLifecycleOwner,
object : OnBackPressedCallback(true) {
override fun handleOnBackPressed() {
// DO NOTHING
}
})
may_be_later.setOnClickListener { findNavController().navigate(R.id.next_action_a) }
access_location.setOnClickListener { handleLocationAccessPermission() }
tv_privacy_notice.setOnClickListener {
_appNavigator.openInChrome(
context!!,
Constants.PRIVACY_URL
)
}
}
override fun invalidate() = withState(_viewModel) { state ->
binding.run {
buttonOneText = state.onBoardingContent.button1Text
buttonTwoText = state.onBoardingContent.button2Text
imageHelpText = state.onBoardingContent.imageHelpText
imageText = state.onBoardingContent.imageText
imageUrl = state.onBoardingContent.imageUrl
}
}
private fun handleLocationAccessPermission() = activity?.let {
_permissionProvider.checkSelfPermission(
it,
permission = Manifest.permission.ACCESS_FINE_LOCATION,
requestPermission = { requestPermission() },
granted = {
findNavController().navigate(R.id.next_action_b)
},
shouldShowExplanation = { showDialog() })
}
private fun showDialog() {
val fm = fragmentManager
fm ?: return
val dialogFragment = LocationAccessDialogFragment.newInstance()
dialogFragment.show(fm, "locationAccessDialog")
dialogFragment.callback = object : LocationAccessDialogFragment.Callback {
override fun onAllow() {
requestPermission()
}
}
}
override fun onRequestPermissionsResult(
requestCode: Int,
permissions: Array<out String>,
grantResults: IntArray
) {
when (requestCode) {
PermissionProvider.REQUEST_CODE -> {
if ((grantResults.isNotEmpty() && grantResults[0] == PackageManager.PERMISSION_GRANTED)) {
findNavController().navigate(R.id.next_action_b)
}
}
}
}
private fun requestPermission() = requestPermissions(
arrayOf(Manifest.permission.ACCESS_FINE_LOCATION),
PermissionProvider.REQUEST_CODE
)
}

这是我的对话片段

package com.cbre.host.onboarding.locationaccess
import android.app.AlertDialog
import android.app.Dialog
import android.os.Bundle
import android.view.LayoutInflater
import androidx.fragment.app.DialogFragment
import com.cbre.host.onboarding.databinding.LocationAccessDialogBinding

class LocationAccessDialogFragment : DialogFragment() {
private lateinit var binding: LocationAccessDialogBinding
var callback: Callback? = null
interface Callback {
fun onAllow()
}
companion object {
fun newInstance() = LocationAccessDialogFragment()
}
override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
binding =
LocationAccessDialogBinding.inflate(LayoutInflater.from(activity), null, false)
val builder = AlertDialog.Builder(activity)
.setView(binding.root)
val d = builder.create()
d?.window?.decorView?.setBackgroundResource(android.R.color.transparent)
binding.dontAllow.setOnClickListener {
this.dismiss()
}
binding.allow.setOnClickListener {
callback?.onAllow()
this.dismiss()
}
return d
}
}

这是我的考验

@Test
fun a_checkBtnAccessLocationClickForDenyPermission() {
val scenario = launchFragmentInContainer<LocationAccessFragment>()
scenario.onFragment { fragment ->
Navigation.setViewNavController(fragment.requireView(), navController)
}
onView(withId(R.id.access_location)).perform(click())
}
}

Answer 1

我假设你想对片段执行单元测试，在这种情况下，你应该对对话片段执行单独的单元测试。

片段单元测试如下所示。

@Test
fun a_checkBtnAccessLocationClickForDenyPermission() {
val mockNavController = mock(NavController::class.java)
val scenario = launchFragmentInContainer<LocationAccessFragment>()
scenario.onFragment { fragment ->
Navigation.setViewNavController(fragment.requireView(), mockNavController)
}
onView(withId(R.id.access_location)).perform(ViewActions.click())
verify(mockNavController).navigate(R.id.actoin_fragment_to_locationAccessDialog)
}
}

对话框单元测试，对话框不会随 launchFragmentInContainer 一起加载，因此您需要使用 launchFragment

@Test
fun positiveButton() {

launchFragment(themeResId = R.style.My_theme) {
return@launchFragment LocationAccessDialogFragment() 
}
onView(allOf(withId(android.R.id.button1), withText(R.string.confirm)))
.inRoot(isDialog())
.check(matches(isDisplayed()))
.perform(ViewActions.click())

}

Answer 2

在showDialog((方法更改行的主要活动中

val fm=fragmentManager

跟

val fm=childFragmentManager

希望对您有所帮助