implementing expresso testing on recycler view

app/build.gradle

@@ -58,12 +58,19 @@ dependencies {
     implementation "androidx.room:room-runtime:$roomVersion"
     kapt "androidx.room:room-compiler:$roomVersion"
 
+    implementation 'androidx.recyclerview:recyclerview:1.2.1'
+
+
     implementation "androidx.room:room-ktx:$roomVersion"
     implementation 'androidx.core:core-ktx:1.9.0'
     implementation 'androidx.appcompat:appcompat:1.6.1'
     implementation 'com.google.android.material:material:1.8.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.5'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
+    androidTestImplementation 'androidx.test.espresso:espresso-contrib:3.5.1'
+
+
 }

app/src/androidTest/java/me/joaovictorsl/adafreetoplaygames/ExampleInstrumentedTest.kt

@@ -1,24 +1,54 @@
 package me.joaovictorsl.adafreetoplaygames
 
-import androidx.test.platform.app.InstrumentationRegistry
+import androidx.recyclerview.widget.RecyclerView
+import androidx.test.core.app.ActivityScenario
+import androidx.test.espresso.Espresso
+import androidx.test.espresso.action.ViewActions
+import androidx.test.espresso.contrib.RecyclerViewActions
+import androidx.test.espresso.matcher.ViewMatchers
+import androidx.test.ext.junit.rules.ActivityScenarioRule
 import androidx.test.ext.junit.runners.AndroidJUnit4
-
+import androidx.test.platform.app.InstrumentationRegistry
+import me.joaovictorsl.adafreetoplaygames.ui.gamelist.GameListActivity
+import me.joaovictorsl.adafreetoplaygames.ui.recyclerview.adapter.GameAdapter
+import org.junit.Assert.assertEquals
+import org.junit.Rule
 import org.junit.Test
 import org.junit.runner.RunWith
-
-import org.junit.Assert.*
-
 /**
  * Instrumented test, which will execute on an Android device.
  *
  * See [testing documentation](http://d.android.com/tools/testing).
  */
 @RunWith(AndroidJUnit4::class)
-class ExampleInstrumentedTest {
+class GameListActivityTest {
+
+    @get:Rule
+    val activityRule = ActivityScenarioRule(GameListActivity::class.java)
+
     @Test
-    fun useAppContext() {
-        // Context of the app under test.
-        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
-        assertEquals("me.joaovictorsl.adafreetoplaygames", appContext.packageName)
+    fun scrollToAndClickItem() {
+        ActivityScenario.launch(GameListActivity::class.java).use { scenario ->
+            // Delay for RecyclerView to populate with data
+            Thread.sleep(2000)
+
+            // Replace `desiredPosition` with the index of the desired cell you want to scroll to and click
+            val desiredPosition = 10
+
+            // Scroll to the desired position
+            Espresso.onView(ViewMatchers.withId(R.id.game_list_recycler_view))
+                .perform(
+                    RecyclerViewActions.scrollToPosition<GameAdapter.GameViewHolder>(desiredPosition)
+                )
+
+            // Click on the desired cell
+            Espresso.onView(ViewMatchers.withId(R.id.game_list_recycler_view))
+                .perform(
+                    RecyclerViewActions.actionOnItemAtPosition<GameAdapter.GameViewHolder>(
+                        desiredPosition,
+                        ViewActions.click()
+                    )
+                )
+        }
     }
-}
+}