Add EspressoIdlingResource

Signed-off-by: alperozturk <alper_ozturk@proton.me>

app/src/androidTest/java/com/owncloud/android/ui/activity/UploadFilesActivityIT.kt

@@ -10,6 +10,7 @@ package com.owncloud.android.ui.activity
 import android.content.Intent
 import androidx.annotation.UiThread
 import androidx.test.espresso.Espresso.onView
+import androidx.test.espresso.IdlingRegistry
 import androidx.test.espresso.assertion.ViewAssertions.matches
 import androidx.test.espresso.intent.rule.IntentsTestRule
 import androidx.test.espresso.matcher.ViewMatchers.isDisplayed
@@ -47,6 +48,16 @@ class UploadFilesActivityIT : AbstractIT() {
         directories.forEach { it.deleteRecursively() }
     }
 
+    @Before
+    fun registerIdlingResource() {
+        IdlingRegistry.getInstance().register(EspressoIdlingResource.countingIdlingResource)
+    }
+
+    @After
+    fun unregisterIdlingResource() {
+        IdlingRegistry.getInstance().unregister(EspressoIdlingResource.countingIdlingResource)
+    }
+
     @Test
     @ScreenshotTest
     fun noneSelected() {