[fenix] Improve collection deletion UI coverage

app/src/androidTest/java/org/mozilla/fenix/ui/CollectionTest.kt

@@ -11,9 +11,11 @@ import org.junit.After
 import org.junit.Before
 import org.junit.Rule
 import org.junit.Test
+import org.mozilla.fenix.customannotations.SmokeTest
 import org.mozilla.fenix.helpers.AndroidAssetDispatcher
 import org.mozilla.fenix.helpers.FeatureSettingsHelper
 import org.mozilla.fenix.helpers.HomeActivityTestRule
+import org.mozilla.fenix.helpers.TestAssetHelper
 import org.mozilla.fenix.helpers.TestAssetHelper.getGenericAsset
 import org.mozilla.fenix.ui.robots.browserScreen
 import org.mozilla.fenix.ui.robots.homeScreen
@@ -273,4 +275,29 @@ class CollectionTest {
             verifyMenuButton()
         }
     }
+
+    @SmokeTest
+    @Test
+    fun undoDeleteCollectionTest() {
+        val webPage = TestAssetHelper.getGenericAsset(mockWebServer, 1)
+
+        navigationToolbar {
+        }.enterURLAndEnterToBrowser(webPage.url) {
+        }.openTabDrawer {
+            createCollection(webPage.title, firstCollectionName)
+            snackBarButtonClick("VIEW")
+        }
+
+        homeScreen {
+        }.expandCollection(firstCollectionName) {
+            clickCollectionThreeDotButton()
+            selectDeleteCollection()
+        }
+
+        homeScreen {
+            verifySnackBarText("Collection deleted")
+            clickUndoCollectionDeletion("UNDO")
+            verifyCollectionIsDisplayed(firstCollectionName, true)
+        }
+    }
 }

app/src/androidTest/java/org/mozilla/fenix/ui/robots/HomeScreenRobot.kt

@@ -151,10 +151,13 @@ class HomeScreenRobot {
         mDevice.waitNotNull(findObject(By.text(expectedText)), waitingTime)
     }
 
-    fun snackBarButtonClick(expectedText: String) {
-        onView(allOf(withId(R.id.snackbar_btn), withText(expectedText))).check(
-            matches(withEffectiveVisibility(Visibility.VISIBLE))
-        ).perform(click())
+    fun clickUndoCollectionDeletion(expectedText: String) {
+        onView(
+            allOf(
+                withId(R.id.snackbar_btn),
+                withText(expectedText)
+            )
+        ).click()
     }
 
     class Transition {