Fix oppia#3413: Fix espresso test failing in topic practice fragment …

…test (oppia#3743)

* Fixed test not passing in this testTopicPracticeFragment_loadFragment_selectSubtopics_clickStartButton_skillListTransferSuccessfully by unregistering the idling resouce in it

* removed a unused import as ktlint was failing

* Added .use after launcing the activity and added all code inside it

* formatted the file

* removed unused import

* Fixed Idling resources issue

app/src/sharedTest/java/org/oppia/android/app/topic/practice/TopicPracticeFragmentTest.kt

@@ -4,6 +4,7 @@ import android.app.Application
 import androidx.appcompat.app.AppCompatActivity
 import androidx.recyclerview.widget.RecyclerView
 import androidx.test.core.app.ActivityScenario
+import androidx.test.core.app.ActivityScenario.launch
 import androidx.test.core.app.ApplicationProvider
 import androidx.test.espresso.Espresso.onView
 import androidx.test.espresso.action.ViewActions.click
@@ -26,7 +27,6 @@ import org.hamcrest.Matchers.allOf
 import org.hamcrest.Matchers.not
 import org.junit.After
 import org.junit.Before
-import org.junit.Ignore
 import org.junit.Rule
 import org.junit.Test
 import org.junit.runner.RunWith
@@ -244,15 +244,16 @@ class TopicPracticeFragmentTest {
  }
 
  @Test
- @Ignore("Flaky test") // TODO(#3413): Test is failing unexpectedly.
  fun testTopicPracticeFragment_loadFragment_selectSubtopics_clickStartButton_skillListTransferSuccessfully() { // ktlint-disable max-line-length
- launchTopicActivityIntent(internalProfileId, FRACTIONS_TOPIC_ID)
- clickPracticeTab()
- clickPracticeItem(position = 1, targetViewId = R.id.subtopic_check_box)
- scrollToPosition(position = 5)
- clickPracticeItem(position = 5, targetViewId = R.id.topic_practice_start_button)
- intended(hasComponent(QuestionPlayerActivity::class.java.name))
- intended(hasExtra(QuestionPlayerActivity.getIntentKey(), skillIdList))
+ testCoroutineDispatchers.unregisterIdlingResource()
+ launchTopicActivityIntent(internalProfileId, FRACTIONS_TOPIC_ID).use {
+ clickPracticeTab()
+ clickPracticeItem(position = 1, targetViewId = R.id.subtopic_check_box)
+ scrollToPosition(position = 5)
+ clickPracticeItem(position = 5, targetViewId = R.id.topic_practice_start_button)
+ intended(hasComponent(QuestionPlayerActivity::class.java.name))
+ intended(hasExtra(QuestionPlayerActivity.getIntentKey(), skillIdList))
+ }
  }
 
  @Test