[fenix] startOnLastTab UI smoke test

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

@@ -20,6 +20,7 @@ import org.mozilla.fenix.helpers.HomeActivityIntentTestRule
 import org.mozilla.fenix.helpers.TestAssetHelper.getGenericAsset
 import org.mozilla.fenix.helpers.TestAssetHelper.getLoremIpsumAsset
 import org.mozilla.fenix.helpers.TestHelper.restartApp
+import org.mozilla.fenix.ui.robots.browserScreen
 import org.mozilla.fenix.ui.robots.checkTextSizeOnWebsite
 import org.mozilla.fenix.ui.robots.homeScreen
 import org.mozilla.fenix.ui.robots.navigationToolbar
@@ -245,4 +246,38 @@ class SettingsBasicsTest {
             verifyHomeScreen()
         }
     }
+
+    @SmokeTest
+    @Test
+    fun startOnLastTabTest() {
+        val firstWebPage = getGenericAsset(mockWebServer, 1)
+
+        homeScreen {
+        }.openThreeDotMenu {
+        }.openSettings {
+        }.openHomepageSubMenu {
+            clickStartOnHomepageButton()
+        }
+
+        restartApp(activityIntentTestRule)
+
+        homeScreen {
+            verifyHomeScreen()
+        }
+
+        navigationToolbar {
+        }.enterURLAndEnterToBrowser(firstWebPage.url) {
+            mDevice.waitForIdle()
+        }.goToHomescreen {
+        }.openThreeDotMenu {
+        }.openCustomizeHome {
+            clickStartOnLastTabButton()
+        }
+
+        restartApp(activityIntentTestRule)
+
+        browserScreen {
+            verifyUrl(firstWebPage.url.toString())
+        }
+    }
 }

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

@@ -32,6 +32,7 @@ class SettingsSubMenuHomepageRobot {
     fun clickJumpBackInButton() = jumpBackInButton().click()
     fun clickRecentBookmarksButton() = recentBookmarksButton().click()
     fun clickStartOnHomepageButton() = homepageButton().click()
+    fun clickStartOnLastTabButton() = lastTabButton().click()
 
     class Transition {