Fix and re-enable checkout flow activity tests.

app/src/androidTest/java/org/thoughtcrime/securesms/components/settings/app/subscription/donate/CheckoutFlowActivityTest__RecurringDonations.kt

@@ -12,7 +12,6 @@ import androidx.test.espresso.matcher.ViewMatchers.withText
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import androidx.test.platform.app.InstrumentationRegistry
 import okhttp3.mockwebserver.MockResponse
-import org.junit.Ignore
 import org.junit.Rule
 import org.junit.Test
 import org.junit.runner.RunWith
@@ -26,6 +25,7 @@ import org.thoughtcrime.securesms.keyvalue.SignalStore
 import org.thoughtcrime.securesms.testing.Delete
 import org.thoughtcrime.securesms.testing.Get
 import org.thoughtcrime.securesms.testing.SignalActivityRule
+import org.thoughtcrime.securesms.testing.actions.RecyclerViewScrollToBottomAction
 import org.thoughtcrime.securesms.testing.success
 import org.thoughtcrime.securesms.util.JsonUtils
 import org.whispersystems.signalservice.api.subscriptions.ActiveSubscription
@@ -36,7 +36,6 @@ import java.util.Currency
 import kotlin.time.Duration.Companion.days
 import kotlin.time.Duration.Companion.milliseconds
 
-@Ignore("Test fails on small screens, requires scrolling.")
 @Suppress("ClassName")
 @RunWith(AndroidJUnit4::class)
 class CheckoutFlowActivityTest__RecurringDonations {
@@ -54,6 +53,7 @@ class CheckoutFlowActivityTest__RecurringDonations {
   @Test
   fun givenNoCurrentDonation_whenILoadScreen_thenIExpectContinueButton() {
     ActivityScenario.launch<CheckoutFlowActivity>(intent)
+    onView(withId(R.id.recycler)).perform(RecyclerViewScrollToBottomAction)
     onView(withText("Continue")).check(matches(isDisplayed()))
   }
 
@@ -63,6 +63,8 @@ class CheckoutFlowActivityTest__RecurringDonations {
     initialiseActiveSubscription()
 
     ActivityScenario.launch<CheckoutFlowActivity>(intent)
+
+    onView(withId(R.id.recycler)).perform(RecyclerViewScrollToBottomAction)
     onView(withText(R.string.SubscribeFragment__update_subscription)).check(matches(isDisplayed()))
     onView(withText(R.string.SubscribeFragment__cancel_subscription)).check(matches(isDisplayed()))
   }
@@ -73,6 +75,7 @@ class CheckoutFlowActivityTest__RecurringDonations {
     initialiseActiveSubscription()
 
     ActivityScenario.launch<CheckoutFlowActivity>(intent)
+    onView(withId(R.id.recycler)).perform(RecyclerViewScrollToBottomAction)
     onView(withText(R.string.SubscribeFragment__cancel_subscription)).check(matches(isDisplayed()))
     onView(withText(R.string.SubscribeFragment__cancel_subscription)).perform(ViewActions.click())
     onView(withText(R.string.SubscribeFragment__confirm_cancellation)).check(matches(isDisplayed()))
@@ -86,6 +89,7 @@ class CheckoutFlowActivityTest__RecurringDonations {
     initialisePendingSubscription()
 
     ActivityScenario.launch<CheckoutFlowActivity>(intent)
+    onView(withId(R.id.recycler)).perform(RecyclerViewScrollToBottomAction)
     onView(withText(R.string.SubscribeFragment__update_subscription)).check(matches(isDisplayed()))
     onView(withText(R.string.SubscribeFragment__update_subscription)).check(matches(isNotEnabled()))
   }

app/src/androidTest/java/org/thoughtcrime/securesms/testing/actions/RecyclerViewScrollToBottomAction.kt

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2025 Signal Messenger, LLC
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+package org.thoughtcrime.securesms.testing.actions
+
+import android.view.View
+import androidx.recyclerview.widget.RecyclerView
+import androidx.test.espresso.UiController
+import androidx.test.espresso.ViewAction
+import androidx.test.espresso.matcher.ViewMatchers.isAssignableFrom
+import androidx.test.espresso.matcher.ViewMatchers.isDisplayed
+import org.hamcrest.CoreMatchers.allOf
+import org.hamcrest.Matcher
+
+/**
+ * Scrolls the RecyclerView to the bottom position.
+ *
+ * Borrowed from [https://stackoverflow.com/a/55990445](https://stackoverflow.com/a/55990445)
+ */
+object RecyclerViewScrollToBottomAction : ViewAction {
+  override fun getDescription(): String = "scroll RecyclerView to bottom"
+
+  override fun getConstraints(): Matcher<View> = allOf(isAssignableFrom(RecyclerView::class.java), isDisplayed())
+
+  override fun perform(uiController: UiController?, view: View?) {
+    val recyclerView = view as RecyclerView
+    val itemCount = recyclerView.adapter?.itemCount
+    val position = itemCount?.minus(1) ?: 0
+    recyclerView.scrollToPosition(position)
+    uiController?.loopMainThreadUntilIdle()
+  }
+}